chore(deps): update dependency phpunit/phpunit to v12.5.33

Signed-off-by: Sebastian Krupinski <krupinski01@gmail.com>

.github/workflows/build-test.yml

@@ -0,0 +1,42 @@
+name: Build Test
+
+on:
+  pull_request:
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Retrieve Server Install Action
+        uses: actions/checkout@v6.0.2
+        with:
+          repository: Nodarx/action-server-install
+          ref: main
+          path: action-server-install
+          github-server-url: https://git.ktrix.dev
+
+      - name: Install Server
+        uses: ./action-server-install
+        with:
+          install-php: 'false'
+          install-node: 'true'
+          php-version: '8.5'
+          node-version: '24'
+          server-path: './server'
+
+      - name: Checkout Pull Request
+        uses: actions/checkout@v6.0.2
+        with:
+          repository: ${{ github.repository }}
+          ref: ${{ github.event.pull_request.head.sha }}
+          path: server/modules/chrono_manager
+          github-server-url: https://git.ktrix.dev
+
+      - name: Install dependencies
+        run: npm ci
+        working-directory: server/modules/chrono_manager
+
+      - name: Build
+        run: npm run build
+        working-directory: server/modules/chrono_manager

.github/workflows/js-unit-tests.yml

@@ -0,0 +1,42 @@
+name: JS Unit Tests
+
+on:
+  pull_request:
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Retrieve Server Install Action
+        uses: actions/checkout@v6.0.2
+        with:
+          repository: Nodarx/action-server-install
+          ref: main
+          path: action-server-install
+          github-server-url: https://git.ktrix.dev
+
+      - name: Install Server
+        uses: ./action-server-install
+        with:
+          install-php: 'false'
+          install-node: 'true'
+          php-version: '8.5'
+          node-version: '24'
+          server-path: './server'
+
+      - name: Checkout Pull Request
+        uses: actions/checkout@v6.0.2
+        with:
+          repository: ${{ github.repository }}
+          ref: ${{ github.event.pull_request.head.sha }}
+          path: server/modules/chrono_manager
+          github-server-url: https://git.ktrix.dev
+
+      - name: Install dependencies
+        run: npm ci
+        working-directory: server/modules/chrono_manager
+
+      - name: Run tests
+        run: npm run test:unit
+        working-directory: server/modules/chrono_manager

.github/workflows/php-integration-tests.yml

@@ -0,0 +1,59 @@
+name: PHP Integration Tests
+
+on:
+  pull_request:
+  workflow_dispatch:
+
+jobs:
+  test:
+    name: Integration Tests
+    runs-on: ubuntu-latest
+    services:
+      mongo:
+        image: mongo:8
+        options: >-
+          --health-cmd "mongosh --quiet --eval \"db.adminCommand('ping')\""
+          --health-interval 5s
+          --health-timeout 5s
+          --health-retries 12
+
+    steps:
+      - name: Retrieve Server Install Action
+        uses: actions/checkout@v6.0.2
+        with:
+          repository: Nodarx/action-server-install
+          ref: main
+          path: action-server-install
+          github-server-url: https://git.ktrix.dev
+
+      - name: Install server
+        uses: ./action-server-install
+        with:
+          install-php: 'true'
+          php-version: '8.5'
+          server-path: './server'
+          database-uri: 'mongodb://mongo:27017/?tls=false'
+          database-name: 'ktrix_ci'
+          app-environment: 'test'
+
+      - name: Checkout module under test
+        uses: actions/checkout@v6.0.2
+        with:
+          repository: ${{ github.repository }}
+          ref: ${{ github.event.pull_request.head.sha || github.sha }}
+          path: server/modules/chrono_manager
+          github-server-url: https://git.ktrix.dev
+
+      - name: Install module dependencies
+        run: composer install --prefer-dist --no-progress
+        working-directory: server/modules/chrono_manager
+
+      - name: Install and enable module
+        working-directory: server
+        run: |
+          php bin/console module:install chrono_manager
+          php bin/console module:enable chrono_manager
+
+      - name: Run integration tests
+        working-directory: server/modules/chrono_manager
+        run: composer test:integration

.github/workflows/php-unit-tests.yml

@@ -0,0 +1,42 @@
+name: PHP Unit Tests
+
+on:
+  pull_request:
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Retrieve Server Install Action
+        uses: actions/checkout@v6.0.2
+        with:
+          repository: Nodarx/action-server-install
+          ref: main
+          path: action-server-install
+          github-server-url: https://git.ktrix.dev
+
+      - name: Install Server
+        uses: ./action-server-install
+        with:
+          install-php: 'true'
+          install-node: 'false'
+          php-version: '8.5'
+          node-version: '24'
+          server-path: './server'
+
+      - name: Checkout Pull Request
+        uses: actions/checkout@v6.0.2
+        with:
+          repository: ${{ github.repository }}
+          ref: ${{ github.event.pull_request.head.sha }}
+          path: server/modules/chrono_manager
+          github-server-url: https://git.ktrix.dev
+
+      - name: Install dependencies
+        run: composer install --prefer-dist --no-progress
+        working-directory: server/modules/chrono_manager
+
+      - name: Run tests
+        run: composer test:unit
+        working-directory: server/modules/chrono_manager

.github/workflows/renovate.yml

@@ -25,11 +25,17 @@ jobs:
           tools: composer:v2
 
       - name: Install Renovate
-        run: npm install -g renovate
+        run: |
+          npm install --global --no-audit --fund=false \
+            --prefix "${{ runner.temp }}/renovate-npm" \
+            --cache "${{ runner.temp }}/renovate-npm-cache" \
+            renovate
+          "${{ runner.temp }}/renovate-npm/bin/renovate" --version
 
       - name: Run Renovate
         env:
           RENOVATE_TOKEN: ${{ secrets.RENOVATE_TOKEN }}
           RENOVATE_PLATFORM: gitea
           RENOVATE_ENDPOINT: https://git.ktrix.dev/api/v1
-        run: renovate ${{ gitea.repository }}
+        run: |
+          "${{ runner.temp }}/renovate-npm/bin/renovate" ${{ gitea.repository }}

.gitignore

@@ -14,10 +14,7 @@ node_modules/
 # Backend development
 /lib/vendor/
 coverage/
-phpunit.xml.cache
-.phpunit.result.cache
-.php-cs-fixer.cache
-.phpstan.cache
+*.cache
 .phpactor/
 
 # Editors

composer.json

@@ -10,17 +10,30 @@
     "config": {
         "optimize-autoloader": true,
         "platform": {
-            "php": "8.2"
+            "php": "8.3"
         },
         "autoloader-suffix": "ChronoManager",
         "vendor-dir": "lib/vendor"
     },
     "require": {
-        "php": ">=8.2 <=8.5"
+        "php": ">=8.3 <=8.5",
+        "sabre/vobject": "^5.0"
+    },
+    "require-dev": {
+        "phpunit/phpunit": "^12.0"
     },
     "autoload": {
         "psr-4": {
             "KTXM\\ChronoManager\\": "lib/"
         }
+    },
+    "autoload-dev": {
+        "psr-4": {
+            "KTXT\\ChronoManager\\Tests\\": "tests/php/"
+        }
+    },
+    "scripts": {
+        "test:unit": "phpunit --configuration tests/php/phpunit.xml --testsuite \"Unit Tests\" --colors=always --testdox",
+        "test:integration": "phpunit --configuration tests/php/phpunit.xml --testsuite \"Integration Tests\" --colors=always --testdox"
     }
 }

lib/Controllers/DefaultController.php

@@ -11,12 +11,24 @@ namespace KTXM\ChronoManager\Controllers;
 
 use InvalidArgumentException;
 use KTXC\Http\Response\JsonResponse;
-use KTXC\SessionIdentity;
-use KTXC\SessionTenant;
+use KTXC\Http\Response\Response;
+use KTXC\Http\Response\StreamedNdJsonResponse;
+use KTXC\Http\Response\StreamedResponse;
+use KTXC\Context\IdentityContextInterface;
+use KTXC\Context\TenantContextInterface;
 use KTXF\Controller\ControllerAbstract;
-use KTXF\Resource\Selector\SourceSelector;
+use KTXF\Json\JsonSerializable;
+use KTXF\Resource\Identifier\CollectionIdentifier;
+use KTXF\Resource\Identifier\EntityIdentifier;
+use KTXF\Resource\Identifier\ResourceIdentifier;
+use KTXF\Resource\Identifier\ResourceIdentifiers;
+use KTXF\Resource\Identifier\ServiceIdentifier;
 use KTXF\Routing\Attributes\AuthenticatedRoute;
+use KTXM\ChronoManager\Export\ExportService;
+use KTXM\ChronoManager\Import\ImportOptions;
+use KTXM\ChronoManager\Import\ImportService;
 use KTXM\ChronoManager\Manager;
+use KTXM\ChronoManager\Stream\ExpectedTotal;
 use Psr\Log\LoggerInterface;
 use Throwable;
 
@@ -25,26 +37,41 @@ class DefaultController extends ControllerAbstract {
     private const ERR_MISSING_PROVIDER = 'Missing parameter: provider';
     private const ERR_MISSING_IDENTIFIER = 'Missing parameter: identifier';
     private const ERR_MISSING_SERVICE = 'Missing parameter: service';
-    private const ERR_MISSING_COLLECTION = 'Missing parameter: collection';
     private const ERR_MISSING_DATA = 'Missing parameter: data';
     private const ERR_MISSING_SOURCES = 'Missing parameter: sources';
-    private const ERR_MISSING_IDENTIFIERS = 'Missing parameter: identifiers';
+    private const ERR_MISSING_TARGET = 'Missing parameter: target';
+    private const ERR_MISSING_TARGETS = 'Missing parameter: targets';
     private const ERR_INVALID_OPERATION = 'Invalid operation: ';
     private const ERR_INVALID_PROVIDER = 'Invalid parameter: provider must be a string';
     private const ERR_INVALID_SERVICE = 'Invalid parameter: service must be a string';
     private const ERR_INVALID_IDENTIFIER = 'Invalid parameter: identifier must be a string';
-    private const ERR_INVALID_COLLECTION = 'Invalid parameter: collection must be a string or integer';
     private const ERR_INVALID_SOURCES = 'Invalid parameter: sources must be an array';
-    private const ERR_INVALID_IDENTIFIERS = 'Invalid parameter: identifiers must be an array';
+    private const ERR_INVALID_TARGET = 'Invalid parameter: target must be an array';
+    private const ERR_INVALID_TARGETS = 'Invalid parameter: targets must be an array';
     private const ERR_INVALID_DATA = 'Invalid parameter: data must be an array';
 
 	public function __construct(
-		private readonly SessionTenant $tenantIdentity,
-		private readonly SessionIdentity $userIdentity,
+		private readonly TenantContextInterface $tenantContext,
+		private readonly IdentityContextInterface $identityContext,
 		private readonly Manager $manager,
+		private readonly ImportService $importService,
+		private readonly ExportService $exportService,
 		private readonly LoggerInterface $logger,
 	) {}
 
+	/**
+     * Main API endpoint for chrono operations
+     * 
+     * Single operation:
+     *   {
+     *     "version": 1,
+     *     "transaction": "tx-1",
+     *     "operation": "entity.create",
+     *     "data": {...}
+     *   }
+     * 
+     * @return JsonResponse
+     */
 	#[AuthenticatedRoute('/v1', name: 'chrono.manager.v1', methods: ['POST'])]
     public function index(
         int $version,
@@ -52,16 +79,21 @@ class DefaultController extends ControllerAbstract {
         string|null $operation = null,
         array|null $data = null,
         string|null $user = null
-    ): JsonResponse {
+    ): Response {
 
         // authorize request
-        $tenantId = $this->tenantIdentity->identifier();
-        $userId = $this->userIdentity->identifier();
+        $tenantId = $this->tenantContext->identifier();
+        $userId = $this->identityContext->identifier();
 
         try {
             
             if ($operation !== null) {
-                $result = $this->processOperation($tenantId, $userId, $operation, $data ?? [], []);
+                $result = $this->processOperation($tenantId, $userId, $operation, $data ?? [], $version, $transaction);
+
+                if ($result instanceof Response) {
+                    return $result;
+                }
+
                 return new JsonResponse([
                     'version' => $version,
                     'transaction' => $transaction,
@@ -88,10 +120,11 @@ class DefaultController extends ControllerAbstract {
         }
     }
 
+
     /**
      * Process a single operation
      */
-    private function processOperation(string $tenantId, string $userId, string $operation, array $data): mixed {
+    private function processOperation(string $tenantId, string $userId, string $operation, array $data, int $version = 1, string $transaction = ''): mixed {
         return match ($operation) {
             // Provider operations
             'provider.list' => $this->providerList($tenantId, $userId, $data),
@@ -105,7 +138,7 @@ class DefaultController extends ControllerAbstract {
             'service.create' => $this->serviceCreate($tenantId, $userId, $data),
             'service.update' => $this->serviceUpdate($tenantId, $userId, $data),
             'service.delete' => $this->serviceDelete($tenantId, $userId, $data),
-            'service.test' => $this->serviceTest($tenantId, $userId, $data),
+            'service.test' => throw new InvalidArgumentException('Operation not implemented: ' . $operation),
             
             // Collection operations
             'collection.list' => $this->collectionList($tenantId, $userId, $data),
@@ -116,15 +149,17 @@ class DefaultController extends ControllerAbstract {
             'collection.delete' => $this->collectionDelete($tenantId, $userId, $data),
             
             // Entity operations
-            'entity.list' => $this->entityList($tenantId, $userId, $data),
+            'entity.listBulk' => $this->entityListBulk($tenantId, $userId, $data),
+            'entity.listStream' => $this->entityListStream($tenantId, $userId, $data, $version, $transaction),
             'entity.fetch' => $this->entityFetch($tenantId, $userId, $data),
             'entity.extant' => $this->entityExtant($tenantId, $userId, $data),
+            'entity.delta' => $this->entityDelta($tenantId, $userId, $data),
             'entity.create' => $this->entityCreate($tenantId, $userId, $data),
             'entity.update' => $this->entityUpdate($tenantId, $userId, $data),
             'entity.delete' => $this->entityDelete($tenantId, $userId, $data),
-            'entity.delta' => $this->entityDelta($tenantId, $userId, $data),
-            'entity.move' => throw new InvalidArgumentException('Operation not implemented: ' . $operation),
-            'entity.copy' => throw new InvalidArgumentException('Operation not implemented: ' . $operation),
+            'entity.move' => $this->entityMove($tenantId, $userId, $data),
+            'entity.import' => $this->entityImport($tenantId, $userId, $data, $version, $transaction),
+            'entity.export' => $this->entityExport($tenantId, $userId, $data),
 
             default => throw new InvalidArgumentException(self::ERR_INVALID_OPERATION . $operation)
         };
@@ -134,40 +169,48 @@ class DefaultController extends ControllerAbstract {
 
     private function providerList(string $tenantId, string $userId, array $data): mixed {
 
-        $sources = null;
-		if (isset($data['sources']) && is_array($data['sources'])) {
-			$sources = new SourceSelector();
-			$sources->jsonDeserialize($data['sources']);
+        if (isset($data['targets'])) {
+            if (!is_array($data['targets'])) {
+                throw new InvalidArgumentException(self::ERR_INVALID_TARGETS);
             }
             
-		return $this->manager->providerList($tenantId, $userId, $sources);
+            foreach ($data['targets'] as $target) {
+                if (!is_string($target)) {
+                    throw new InvalidArgumentException(self::ERR_INVALID_TARGETS);
+                }
+            }
+        }
+		
+		return $this->manager->providerList($tenantId, $userId, $data['targets'] ?? []);
 
     }
 
     private function providerFetch(string $tenantId, string $userId, array $data): mixed {
         
-        if (!isset($data['identifier'])) {
-            throw new InvalidArgumentException(self::ERR_MISSING_IDENTIFIER);
+        if (!isset($data['target'])) {
+            throw new InvalidArgumentException(self::ERR_MISSING_TARGET);
         }
-        if (!is_string($data['identifier'])) {
-            throw new InvalidArgumentException(self::ERR_INVALID_IDENTIFIER);
+        if (!is_string($data['target'])) {
+            throw new InvalidArgumentException(self::ERR_INVALID_TARGET);
         }
         
-        return $this->manager->providerFetch($tenantId, $userId, $data['identifier']);
+        return $this->manager->providerFetch($tenantId, $userId, $data['target']);
+
     }
 
     private function providerExtant(string $tenantId, string $userId, array $data): mixed {
         
-        if (!isset($data['sources'])) {
-			throw new InvalidArgumentException(self::ERR_MISSING_SOURCES);
+        if (!isset($data['targets'])) {
+            throw new InvalidArgumentException(self::ERR_MISSING_TARGETS);
         }
-		if (!is_array($data['sources'])) {
-			throw new InvalidArgumentException(self::ERR_INVALID_SOURCES);	
-		}
-		$sources = new SourceSelector();
-		$sources->jsonDeserialize($data['sources']);
 
-		return $this->manager->providerExtant($tenantId, $userId, $sources);
+        foreach ($data['targets'] as $target) {
+            if (!is_string($target)) {
+                throw new InvalidArgumentException(self::ERR_INVALID_TARGETS);
+            }
+        }
+		
+		return $this->manager->providerExtant($tenantId, $userId, $data['targets']);
 
     }
 
@@ -175,13 +218,17 @@ class DefaultController extends ControllerAbstract {
 
     private function serviceList(string $tenantId, string $userId, array $data): mixed {
 
-        $sources = null;
-        if (isset($data['sources']) && is_array($data['sources'])) {
-            $sources = new SourceSelector();
-            $sources->jsonDeserialize($data['sources']);
+        $targets = null;
+        if (isset($data['targets']) && is_array($data['targets'])) {
+            $targets = ResourceIdentifiers::fromArray($data['targets']);
+            foreach ($targets as $target) {
+                if (!$target instanceof CollectionIdentifier && !$target instanceof ServiceIdentifier) {
+                    throw new InvalidArgumentException('Invalid parameter: targets must contain provider:service, provider:service:collection, or provider:service:collection:entity identifiers');
+                }
+            }
         }
 
-        return $this->manager->serviceList($tenantId, $userId, $sources);
+        return $this->manager->serviceList($tenantId, $userId, $targets);
 
     }
 
@@ -205,16 +252,20 @@ class DefaultController extends ControllerAbstract {
 
     private function serviceExtant(string $tenantId, string $userId, array $data): mixed {
         
-        if (!isset($data['sources'])) {
-			throw new InvalidArgumentException(self::ERR_MISSING_SOURCES);
+        if (!isset($data['targets'])) {
+			throw new InvalidArgumentException(self::ERR_MISSING_TARGETS);
+		}
+		if (!is_array($data['targets'])) {
+			throw new InvalidArgumentException(self::ERR_INVALID_TARGETS);
+		}
+		$targets = ResourceIdentifiers::fromArray($data['targets']);
+		foreach ($targets as $target) {
+			if (!$target instanceof ServiceIdentifier) {
+				throw new InvalidArgumentException('Invalid parameter: targets must contain provider:service identifiers');
 			}
-		if (!is_array($data['sources'])) {
-			throw new InvalidArgumentException(self::ERR_INVALID_SOURCES);
 		}
-		$sources = new SourceSelector();
-		$sources->jsonDeserialize($data['sources']);
 
-		return $this->manager->serviceExtant($tenantId, $userId, $sources);
+		return $this->manager->serviceExtant($tenantId, $userId, $targets);
     }
 
     private function serviceCreate(string $tenantId, string $userId, array $data): mixed {
@@ -258,13 +309,17 @@ class DefaultController extends ControllerAbstract {
         if (!is_array($data['data'])) {
             throw new InvalidArgumentException(self::ERR_INVALID_DATA);
         }
+        if (isset($data['delta']) && !is_bool($data['delta'])) {
+            throw new InvalidArgumentException('Invalid parameter: delta must be a boolean');
+        }
         
         return $this->manager->serviceUpdate(
             $tenantId,
             $userId,
             $data['provider'],
             $data['identifier'],
-            $data['data']
+            $data['data'],
+            $data['delta'] ?? false,
         );
     }
 
@@ -290,36 +345,17 @@ class DefaultController extends ControllerAbstract {
         );
     }
 
-    private function serviceTest(string $tenantId, string $userId, array $data): mixed {
-        
-        if (!isset($data['provider'])) {
-            throw new InvalidArgumentException(self::ERR_MISSING_PROVIDER);
-        }
-        if (!is_string($data['provider'])) {
-            throw new InvalidArgumentException(self::ERR_INVALID_PROVIDER);
-        }
-        
-        if (!isset($data['identifier']) && !isset($data['location']) && !isset($data['identity'])) {
-            throw new InvalidArgumentException('Either a service identifier or location and identity must be provided for service test');
-        }
-        
-        return $this->manager->serviceTest(
-            $tenantId,
-            $userId,
-            $data['provider'],
-            $data['identifier'] ?? null,
-            $data['location'] ?? null,
-            $data['identity'] ?? null,
-        );
-    }
-
     // ==================== Collection Operations ====================
 
     private function collectionList(string $tenantId, string $userId, array $data): mixed {
         $sources = null;
         if (isset($data['sources']) && is_array($data['sources'])) {
-            $sources = new SourceSelector();
-            $sources->jsonDeserialize($data['sources']);
+            $sources = ResourceIdentifiers::fromArray($data['sources']);
+            foreach ($sources as $source) {
+                if (!$source instanceof CollectionIdentifier && !$source instanceof ServiceIdentifier) {
+                    throw new InvalidArgumentException('Invalid parameter: sources must contain provider:service, provider:service:collection, or provider:service:collection:entity identifiers');
+                }
+            }
         }
         
         $filter = $data['filter'] ?? null;
@@ -328,47 +364,45 @@ class DefaultController extends ControllerAbstract {
         return $this->manager->collectionList($tenantId, $userId, $sources, $filter, $sort);
     }
 
-    private function collectionExtant(string $tenantId, string $userId, array $data): mixed {
-        if (!isset($data['sources'])) {
-            throw new InvalidArgumentException(self::ERR_MISSING_SOURCES);
-        }
-        if (!is_array($data['sources'])) {
-            throw new InvalidArgumentException(self::ERR_INVALID_SOURCES);
-        }
-        
-        $sources = new SourceSelector();
-        $sources->jsonDeserialize($data['sources']);
-        
-        return $this->manager->collectionExtant($tenantId, $userId, $sources);
-    }
-
     private function collectionFetch(string $tenantId, string $userId, array $data): mixed {
-        if (!isset($data['provider'])) {
-            throw new InvalidArgumentException(self::ERR_MISSING_PROVIDER);
+        if (!isset($data['targets'])) {
+            throw new InvalidArgumentException(self::ERR_MISSING_TARGETS);
         }
-        if (!is_string($data['provider'])) {
-            throw new InvalidArgumentException(self::ERR_INVALID_PROVIDER);
-        }
-        if (!isset($data['service'])) {
-            throw new InvalidArgumentException(self::ERR_MISSING_SERVICE);
-        }
-        if (!is_string($data['service'])) {
-            throw new InvalidArgumentException(self::ERR_INVALID_SERVICE);
-        }
-        if (!isset($data['identifier'])) {
-            throw new InvalidArgumentException(self::ERR_MISSING_IDENTIFIER);
-        }
-        if (!is_string($data['identifier']) && !is_int($data['identifier'])) {
-            throw new InvalidArgumentException(self::ERR_INVALID_COLLECTION);
+        if (!is_array($data['targets'])) {
+            throw new InvalidArgumentException(self::ERR_INVALID_TARGETS);
         }
 
-        return $this->manager->collectionFetch(
+        $targetIdentifiers = ResourceIdentifiers::fromArray($data['targets']);
+        foreach ($targetIdentifiers as $targetIdentifier) {
+            if (!$targetIdentifier instanceof CollectionIdentifier) {
+                throw new InvalidArgumentException('Invalid parameter: target must be provider:service:collection');
+            }
+        }
+
+        $list = $this->manager->collectionFetch(
             $tenantId,
             $userId,
-            $data['provider'],
-            $data['service'],
-            $data['identifier']
+            $targetIdentifier
         );
+        return $list;
+    }
+
+    private function collectionExtant(string $tenantId, string $userId, array $data): mixed {
+        if (!isset($data['targets'])) {
+            throw new InvalidArgumentException(self::ERR_MISSING_TARGETS);
+        }
+        if (!is_array($data['targets'])) {
+            throw new InvalidArgumentException(self::ERR_INVALID_TARGETS);
+        }
+        
+        $sources = ResourceIdentifiers::fromArray($data['targets']);
+        foreach ($sources as $source) {
+            if (!$source instanceof CollectionIdentifier) {
+                throw new InvalidArgumentException('Invalid parameter: targets must contain provider:service, provider:service:collection, or provider:service:collection:entity identifiers');
+            }
+        }
+        
+        return $this->manager->collectionExtant($tenantId, $userId, $sources);
     }
 
     private function collectionCreate(string $tenantId, string $userId, array $data): mixed {
@@ -384,8 +418,8 @@ class DefaultController extends ControllerAbstract {
         if (!is_string($data['service'])) {
             throw new InvalidArgumentException(self::ERR_INVALID_SERVICE);
         }
-        if (isset($data['collection']) && !is_string($data['collection']) && !is_int($data['collection'])) {
-            throw new InvalidArgumentException(self::ERR_INVALID_COLLECTION);
+        if (isset($data['target']) && !is_string($data['target']) && !is_int($data['target'])) {
+            throw new InvalidArgumentException(self::ERR_INVALID_TARGET);
         }
         if (!isset($data['properties'])) {
             throw new InvalidArgumentException(self::ERR_MISSING_DATA);
@@ -394,34 +428,29 @@ class DefaultController extends ControllerAbstract {
             throw new InvalidArgumentException(self::ERR_INVALID_DATA);
         }
 
+        if (isset($data['target'])) {
+            $targetIdentifier = ResourceIdentifier::fromString($data['target']);
+            if (!$targetIdentifier instanceof CollectionIdentifier) {
+                throw new InvalidArgumentException('Invalid parameter: target must be provider:service:collection');
+            }
+        }
+        
         return $this->manager->collectionCreate(
             $tenantId,
             $userId,
             $data['provider'],
             $data['service'],
-            $data['collection'] ?? null,
+            $targetIdentifier ?? null,
             $data['properties']
         );
     }
 
     private function collectionUpdate(string $tenantId, string $userId, array $data): mixed {
-        if (!isset($data['provider'])) {
-            throw new InvalidArgumentException(self::ERR_MISSING_PROVIDER);
+        if (!isset($data['target'])) {
+            throw new InvalidArgumentException(self::ERR_MISSING_TARGET);
         }
-        if (!is_string($data['provider'])) {
-            throw new InvalidArgumentException(self::ERR_INVALID_PROVIDER);
-        }
-        if (!isset($data['service'])) {
-            throw new InvalidArgumentException(self::ERR_MISSING_SERVICE);
-        }
-        if (!is_string($data['service'])) {
-            throw new InvalidArgumentException(self::ERR_INVALID_SERVICE);
-        }
-        if (!isset($data['identifier'])) {
-            throw new InvalidArgumentException(self::ERR_MISSING_IDENTIFIER);
-        }
-        if (!is_string($data['identifier']) && !is_int($data['identifier'])) {
-            throw new InvalidArgumentException(self::ERR_INVALID_COLLECTION);
+        if (!is_string($data['target'])) {
+            throw new InvalidArgumentException(self::ERR_INVALID_TARGET);
         }
         if (!isset($data['properties'])) {
             throw new InvalidArgumentException(self::ERR_MISSING_DATA);
@@ -430,181 +459,375 @@ class DefaultController extends ControllerAbstract {
             throw new InvalidArgumentException(self::ERR_INVALID_DATA);
         }
 
+        $targetIdentifier = ResourceIdentifier::fromString($data['target']);
+        if (!$targetIdentifier instanceof CollectionIdentifier) {
+            throw new InvalidArgumentException('Invalid parameter: target must be provider:service:collection');
+        }
+        
         return $this->manager->collectionUpdate(
             $tenantId,
             $userId,
-            $data['provider'],
-            $data['service'],
-            $data['identifier'],
+            $targetIdentifier,
             $data['properties']
         );
     }
 
     private function collectionDelete(string $tenantId, string $userId, array $data): mixed {
-        if (!isset($data['provider'])) {
-            throw new InvalidArgumentException(self::ERR_MISSING_PROVIDER);
+        if (!isset($data['target'])) {
+            throw new InvalidArgumentException(self::ERR_MISSING_TARGET);
         }
-        if (!is_string($data['provider'])) {
-            throw new InvalidArgumentException(self::ERR_INVALID_PROVIDER);
-        }
-        if (!isset($data['service'])) {
-            throw new InvalidArgumentException(self::ERR_MISSING_SERVICE);
-        }
-        if (!is_string($data['service'])) {
-            throw new InvalidArgumentException(self::ERR_INVALID_SERVICE);
-        }
-        if (!isset($data['identifier'])) {
-            throw new InvalidArgumentException(self::ERR_MISSING_IDENTIFIER);
-        }
-        if (!is_string($data['identifier']) && !is_int($data['identifier'])) {
-            throw new InvalidArgumentException(self::ERR_INVALID_IDENTIFIER);
+        if (!is_string($data['target'])) {
+            throw new InvalidArgumentException(self::ERR_INVALID_TARGET);
         }
 
-        return $this->manager->collectionDelete(
-            $tenantId,
-            $userId,
-            $data['provider'],
-            $data['service'],
-            $data['identifier'],
-            $data['options'] ?? []
-        );
+        $targetIdentifier = ResourceIdentifier::fromString($data['target']);
+        if (!$targetIdentifier instanceof CollectionIdentifier) {
+            throw new InvalidArgumentException('Invalid parameter: target must be provider:service:collection');
+        }
+        
+        $result = $this->manager->collectionDelete($tenantId, $userId, $targetIdentifier, $data['options'] ?? [] );
+        
+        if (is_bool($result)) {
+            return [
+                'disposition' => 'deleted'
+            ];
+        }
+
+        if ($result instanceof JsonSerializable) {
+            return [
+                'disposition' => 'moved',
+                'mutation' => $result
+            ];
+        }
+
+        return $result;
     }
 
     // ==================== Entity Operations ====================
 
-    private function entityList(string $tenantId, string $userId, array $data): mixed {
-        if (!isset($data['sources'])) {
-            throw new InvalidArgumentException(self::ERR_MISSING_SOURCES);
-        }
+    private function entityListBulk(string $tenantId, string $userId, array $data): mixed {
+        
+        if (isset($data['sources'])) {
             if (!is_array($data['sources'])) {
                 throw new InvalidArgumentException(self::ERR_INVALID_SOURCES);
             }
 
-        $sources = new SourceSelector();
-        $sources->jsonDeserialize($data['sources']);
+            $sources = ResourceIdentifiers::fromArray($data['sources']);
+            foreach ($sources as $source) {
+                if (!$source instanceof ServiceIdentifier && !$source instanceof CollectionIdentifier) {
+                    throw new InvalidArgumentException('Invalid parameter: sources must contain provider:service or provider:service:collection identifiers');
+                }
+            }
+        } else {
+            $sources = null;
+        }
         
 		$filter = $data['filter'] ?? null;
 		$sort = $data['sort'] ?? null;
 		$range = $data['range'] ?? null;
 
-		return $this->manager->entityList($tenantId, $userId, $sources, $filter, $sort, $range);
+		return $this->manager->entityListBulk($tenantId, $userId, $sources, $filter, $sort, $range);
 
     }
 
+    private function entityListStream(string $tenantId, string $userId, array $data, int $version, string $transaction): StreamedNdJsonResponse {
+        
+        if (isset($data['sources'])) {
+            if (!is_array($data['sources'])) {
+                throw new InvalidArgumentException(self::ERR_INVALID_SOURCES);
+            }
+
+            $sources = ResourceIdentifiers::fromArray($data['sources']);
+            foreach ($sources as $source) {
+                if (!$source instanceof ServiceIdentifier && !$source instanceof CollectionIdentifier) {
+                    throw new InvalidArgumentException('Invalid parameter: sources must contain provider:service or provider:service:collection identifiers');
+                }
+            }
+        } else {
+            $sources = null;
+        }
+
+        $filter = $data['filter'] ?? null;
+        $sort   = $data['sort'] ?? null;
+        $range  = $data['range'] ?? null;
+
+        $entities = $this->manager->entityListStream($tenantId, $userId, $sources, $filter, $sort, $range);
+
+        return new StreamedNdJsonResponse(
+            $this->streamEnvelope($entities, $version, $transaction),
+            1,
+            200,
+            ['Content-Type' => 'application/json'],
+        );
+    }
+
+    /**
+     * Import iCalendar events into a calendar, streaming one NDJSON event per event.
+     *
+     * Request data: { target: "provider:service:collection", data: "<raw iCalendar string>", options?: {...} }
+     */
+    private function entityImport(string $tenantId, string $userId, array $data, int $version, string $transaction): StreamedNdJsonResponse {
+
+        if (!isset($data['target'])) {
+            throw new InvalidArgumentException(self::ERR_MISSING_TARGET);
+        }
+        if (!is_string($data['target'])) {
+            throw new InvalidArgumentException(self::ERR_INVALID_TARGET);
+        }
+        if (!isset($data['data']) || !is_string($data['data']) || trim($data['data']) === '') {
+            throw new InvalidArgumentException('Invalid parameter: data must be a non-empty string');
+        }
+
+        $target = ResourceIdentifier::fromString($data['target']);
+        if (!$target instanceof CollectionIdentifier) {
+            throw new InvalidArgumentException('Invalid parameter: target must be provider:service:collection');
+        }
+
+        $options = ImportOptions::fromArray($data['options'] ?? []);
+
+        // Spill the payload to a temp file and release the in-memory copy before the
+        // (potentially long) parse and create pass.
+        $tempFile = tmpfile();
+        if ($tempFile === false) {
+            throw new \RuntimeException('Unable to allocate temporary file for import');
+        }
+        fwrite($tempFile, $data['data']);
+        unset($data);
+        rewind($tempFile);
+
+        $events = $this->importService->import($tempFile, $target, $options, $tenantId, $userId);
+        $frames = $this->streamEnvelope($events, $version, $transaction);
+
+        // Stream the envelope, releasing the spilled temp file once it is fully
+        // drained (or the client disconnects) so it never outlives its stream.
+        $response = (function () use ($frames, $tempFile): \Generator {
+            try {
+                yield from $frames;
+            } finally {
+                fclose($tempFile);
+            }
+        })();
+
+        return new StreamedNdJsonResponse($response, 1, 200);
+    }
+
+    /**
+     * Export calendar entities as a streamed iCalendar document.
+     *
+     * Request data: { sources: ["provider:service:collection", "provider:service:collection:entity", ...], filename?: "calendar.ics" }
+     */
+    private function entityExport(string $tenantId, string $userId, array $data): StreamedResponse {
+
+        if (!isset($data['sources'])) {
+            throw new InvalidArgumentException(self::ERR_MISSING_SOURCES);
+        }
+        if (!is_array($data['sources']) || $data['sources'] === []) {
+            throw new InvalidArgumentException(self::ERR_INVALID_SOURCES);
+        }
+
+        $sources = ResourceIdentifiers::fromArray($data['sources']);
+        foreach ($sources as $source) {
+            if (!$source instanceof CollectionIdentifier && !$source instanceof EntityIdentifier) {
+                throw new InvalidArgumentException('Invalid parameter: sources must contain provider:service:collection or provider:service:collection:entity identifiers');
+            }
+        }
+
+        $filename = 'export.ics';
+        if (isset($data['filename']) && is_string($data['filename'])) {
+            $sanitized = preg_replace('/[^A-Za-z0-9._-]+/', '_', trim($data['filename']));
+            if ($sanitized !== '' && $sanitized !== null) {
+                $filename = str_ends_with(strtolower($sanitized), '.ics') ? $sanitized : $sanitized . '.ics';
+            }
+        }
+
+        return new StreamedResponse(
+            $this->exportService->export($sources, $tenantId, $userId),
+            200,
+            [
+                'Content-Type' => 'text/calendar; charset=utf-8',
+                'Content-Disposition' => 'attachment; filename="' . $filename . '"',
+            ],
+        );
+    }
+
+    /**
+     * Wrap a generator of JsonSerializable domain objects in the canonical NDJSON
+     * stream envelope shared by every streaming operation:
+     *
+     *   control:start {version, transaction, total?}  — total? = expected count
+     *   data {data}                                    — one per domain object
+     *   error {message}                                — on failure, then stop
+     *   control:end {total}                            — total = objects emitted
+     *
+     * If the generator leads with an {@see ExpectedTotal} event, its value is
+     * folded into the start frame's `total` (the progress denominator) rather
+     * than emitted as a data frame.
+     *
+     * @param \Generator<\JsonSerializable> $items
+     */
+    private function streamEnvelope(\Generator $items, int $version, string $transaction): \Generator {
+        // Peek the first event: an expected-total marker rides on the start frame.
+        $expected = null;
+        $items->rewind();
+        if ($items->valid() && $items->current() instanceof ExpectedTotal) {
+            $expected = $items->current()->expectedTotal();
+            $items->next();
+        }
+
+        $start = ['type' => 'control', 'status' => 'start', 'version' => $version, 'transaction' => $transaction];
+        if ($expected !== null) {
+            $start['total'] = $expected;
+        }
+        yield $start;
+
+        $total = 0;
+        try {
+            for (; $items->valid(); $items->next()) {
+                $item = $items->current();
+                if (!$item instanceof \JsonSerializable) {
+                    continue;
+                }
+                yield ['type' => 'data', 'data' => $item->jsonSerialize()];
+                $total++;
+            }
+        } catch (\Throwable $t) {
+            $this->logger->error('Error streaming response', ['exception' => $t]);
+            yield ['type' => 'error', 'message' => $t->getMessage()];
+            return;
+        }
+
+        yield ['type' => 'control', 'status' => 'end', 'total' => $total];
+    }
+
     private function entityFetch(string $tenantId, string $userId, array $data): mixed {
-        if (!isset($data['provider'])) {
-            throw new InvalidArgumentException(self::ERR_MISSING_PROVIDER);
+        if (!isset($data['targets'])) {
+            throw new InvalidArgumentException(self::ERR_MISSING_TARGETS);
         }
-        if (!is_string($data['provider'])) {
-            throw new InvalidArgumentException(self::ERR_INVALID_PROVIDER);
-        }
-        if (!isset($data['service'])) {
-            throw new InvalidArgumentException(self::ERR_MISSING_SERVICE);
-        }
-        if (!is_string($data['service'])) {
-            throw new InvalidArgumentException(self::ERR_INVALID_SERVICE);
-        }
-        if (!isset($data['collection'])) {
-            throw new InvalidArgumentException(self::ERR_MISSING_COLLECTION);
-        }
-        if (!is_string($data['collection']) && !is_int($data['collection'])) {
-            throw new InvalidArgumentException(self::ERR_INVALID_COLLECTION);
-        }
-        if (!isset($data['identifiers'])) {
-            throw new InvalidArgumentException(self::ERR_MISSING_IDENTIFIERS);
-        }
-        if (!is_array($data['identifiers'])) {
-            throw new InvalidArgumentException(self::ERR_INVALID_IDENTIFIERS);
+        if (!is_array($data['targets'])) {
+            throw new InvalidArgumentException(self::ERR_INVALID_TARGETS);
         }
 
-        return $this->manager->entityFetch(
+        $targets = ResourceIdentifiers::fromArray($data['targets']);
+        foreach ($targets as $target) {
+            if (!$target instanceof EntityIdentifier) {
+                throw new InvalidArgumentException('Invalid parameter: targets must contain provider:service:collection:entity identifiers');
+            }
+        }
+        
+        return $this->manager->entityFetchBulk(
             $tenantId,
             $userId,
-            $data['provider'],
-            $data['service'],
-            $data['collection'],
-            $data['identifiers']
+            ...$targets->all()
         );
     }
 
     private function entityExtant(string $tenantId, string $userId, array $data): mixed {
-        if (!isset($data['sources'])) {
-            throw new InvalidArgumentException(self::ERR_MISSING_SOURCES);
+        if (!isset($data['targets'])) {
+            throw new InvalidArgumentException(self::ERR_MISSING_TARGETS);
         }
-        if (!is_array($data['sources'])) {
-            throw new InvalidArgumentException(self::ERR_INVALID_SOURCES);
+        if (!is_array($data['targets'])) {
+            throw new InvalidArgumentException(self::ERR_INVALID_TARGETS);
         }
         
-        $sources = new SourceSelector();
-        $sources->jsonDeserialize($data['sources']);
-        
-        return $this->manager->entityExtant($tenantId, $userId, $sources);
+        $targets = ResourceIdentifiers::fromArray($data['targets']);
+        foreach ($targets as $target) {
+            if (!$target instanceof CollectionIdentifier && !$target instanceof EntityIdentifier) {
+                throw new InvalidArgumentException('Invalid parameter: targets must contain provider:service:collection or provider:service:collection:entity identifiers');
+            }
         }
 
-	private function entityCreate(string $tenantId, string $userId, array $data = []): mixed {
-
-		if (!isset($data['provider']) || !is_string($data['provider'])) {
-			throw new InvalidArgumentException(self::ERR_INVALID_PROVIDER);
-		}
-		if (!isset($data['service']) || !is_string($data['service'])) {
-			throw new InvalidArgumentException(self::ERR_INVALID_SERVICE);
-		}
-		if (!isset($data['collection'])) {
-			throw new InvalidArgumentException(self::ERR_INVALID_COLLECTION);
-		}
-        $properties = $data['properties'] ?? $data['data'] ?? null;
-        if (!is_array($properties)) {
-            throw new InvalidArgumentException('Invalid parameter: properties must be an array');
-        }
-		$options = $data['options'] ?? [];
-
-        return $this->manager->entityCreate($tenantId, $userId, $data['provider'], $data['service'], $data['collection'], $properties, $options);
-
-	}
-
-	private function entityUpdate(string $tenantId, string $userId, array $data = []): mixed {
-
-		if (!isset($data['provider']) || !is_string($data['provider'])) {
-			throw new InvalidArgumentException(self::ERR_INVALID_PROVIDER);
-		}
-		if (!isset($data['service']) || !is_string($data['service'])) {
-			throw new InvalidArgumentException(self::ERR_INVALID_SERVICE);
-		}
-		if (!isset($data['collection'])) {
-			throw new InvalidArgumentException(self::ERR_INVALID_COLLECTION);
-		}
-		if (!isset($data['identifier'])) {
-			throw new InvalidArgumentException(self::ERR_INVALID_IDENTIFIER);
-		}
-        $properties = $data['properties'] ?? $data['data'] ?? null;
-        if (!is_array($properties)) {
-            throw new InvalidArgumentException('Invalid parameter: properties must be an array');
-        }
-
-        return $this->manager->entityUpdate($tenantId, $userId, $data['provider'], $data['service'], $data['collection'], $data['identifier'], $properties);
-
-	}
-
-	private function entityDelete(string $tenantId, string $userId, array $data = []): mixed {
-
-		if (!isset($data['provider']) || !is_string($data['provider'])) {
-			throw new InvalidArgumentException(self::ERR_INVALID_PROVIDER);
-		}
-		if (!isset($data['service']) || !is_string($data['service'])) {
-			throw new InvalidArgumentException(self::ERR_INVALID_SERVICE);
-		}
-		if (!isset($data['collection'])) {
-			throw new InvalidArgumentException(self::ERR_INVALID_COLLECTION);
-		}
-		if (!isset($data['identifier'])) {
-			throw new InvalidArgumentException(self::ERR_INVALID_IDENTIFIER);
-		}
-
-		return $this->manager->entityDelete($tenantId, $userId, $data['provider'], $data['service'], $data['collection'], $data['identifier']);
-
+        return $this->manager->entityExtant($tenantId, $userId, $targets);
     }
 
     private function entityDelta(string $tenantId, string $userId, array $data): mixed {
+        if (!isset($data['targets'])) {
+            throw new InvalidArgumentException(self::ERR_MISSING_TARGETS);
+        }
+        if (!is_array($data['targets'])) {
+            throw new InvalidArgumentException(self::ERR_INVALID_TARGETS);
+        }
+        
+        $targets = ResourceIdentifiers::fromArray($data['targets']);
+        foreach ($targets as $target) {
+            if (!$target instanceof CollectionIdentifier && !$target instanceof EntityIdentifier) {
+                throw new InvalidArgumentException('Invalid parameter: targets must contain provider:service:collection or provider:service:collection:signature identifiers');
+            }
+        }
+
+        return $this->manager->entityDelta($tenantId, $userId, $targets);
+    }
+
+    private function entityCreate(string $tenantId, string $userId, array $data = []): mixed {
+        if (!isset($data['target'])) {
+            throw new InvalidArgumentException(self::ERR_MISSING_TARGET);
+        }
+        if (!is_string($data['target'])) {
+            throw new InvalidArgumentException(self::ERR_INVALID_TARGET);
+        }
+        if (!isset($data['properties'])) {
+            throw new InvalidArgumentException(self::ERR_MISSING_DATA);
+        }
+        if (!is_array($data['properties'])) {
+            throw new InvalidArgumentException(self::ERR_INVALID_DATA);
+        }
+
+        $target = ResourceIdentifier::fromString($data['target']);
+        if (!$target instanceof CollectionIdentifier) {
+            throw new InvalidArgumentException('Invalid parameter: target must be provider:service:collection');
+        }
+
+        $options = $data['options'] ?? [];
+
+        return $this->manager->entityCreate($tenantId, $userId, $target, $data['properties'], $options);
+    }
+
+    private function entityUpdate(string $tenantId, string $userId, array $data = []): mixed {
+        if (!isset($data['target'])) {
+            throw new InvalidArgumentException(self::ERR_MISSING_TARGET);
+        }
+        if (!is_string($data['target'])) {
+            throw new InvalidArgumentException(self::ERR_INVALID_TARGET);
+        }
+        if (!isset($data['properties'])) {
+            throw new InvalidArgumentException(self::ERR_MISSING_DATA);
+        }
+        if (!is_array($data['properties'])) {
+            throw new InvalidArgumentException(self::ERR_INVALID_DATA);
+        }
+
+        $target = ResourceIdentifier::fromString($data['target']);
+        if (!$target instanceof EntityIdentifier) {
+            throw new InvalidArgumentException('Invalid parameter: target must be provider:service:collection:entity');
+        }
+
+        return $this->manager->entityModify($tenantId, $userId, $target, $data['properties']);
+    }
+
+    private function entityDelete(string $tenantId, string $userId, array $data): mixed {
+        if (!isset($data['targets'])) {
+            throw new InvalidArgumentException(self::ERR_MISSING_TARGETS);
+        }
+        if (!is_array($data['targets'])) {
+            throw new InvalidArgumentException(self::ERR_INVALID_TARGETS);
+        }
+
+        $targets = ResourceIdentifiers::fromArray($data['targets']);
+        foreach ($targets as $target) {
+            if (!$target instanceof EntityIdentifier) {
+                throw new InvalidArgumentException('Invalid parameter: targets must contain provider:service:collection:entity identifiers');
+            }
+        }
+        
+        return $this->manager->entityDelete($tenantId, $userId, ...$targets->all());
+    }
+
+    private function entityMove(string $tenantId, string $userId, array $data): mixed {
+        if (!isset($data['target'])) {
+            throw new InvalidArgumentException(self::ERR_MISSING_TARGET);
+        }
+        if (!is_string($data['target'])) {
+            throw new InvalidArgumentException(self::ERR_INVALID_TARGET);
+        }
         if (!isset($data['sources'])) {
             throw new InvalidArgumentException(self::ERR_MISSING_SOURCES);
         }
@@ -612,10 +835,19 @@ class DefaultController extends ControllerAbstract {
             throw new InvalidArgumentException(self::ERR_INVALID_SOURCES);
         }
         
-        $sources = new SourceSelector();
-        $sources->jsonDeserialize($data['sources']);
+        $target = ResourceIdentifier::fromString($data['target']);
+        if (!$target instanceof CollectionIdentifier) {
+            throw new InvalidArgumentException('Invalid parameter: target must be provider:service:collection');
+        }
 
-        return $this->manager->entityDelta($tenantId, $userId, $sources);
+        $sources = ResourceIdentifiers::fromArray($data['sources']);
+        foreach ($sources as $source) {
+            if (!$source instanceof EntityIdentifier) {
+                throw new InvalidArgumentException('Invalid parameter: sources must contain provider:service:collection:entity identifiers');
+            }
+        }
+
+        return $this->manager->entityMove($tenantId, $userId, $target, ...$sources->all());
     }
 
 }

lib/Conversion/IcalDecoder.php

@@ -0,0 +1,310 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * SPDX-FileCopyrightText: Sebastian Krupinski <krupinski01@gmail.com>
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+namespace KTXM\ChronoManager\Conversion;
+
+use DateInterval;
+use DateTimeImmutable;
+use DateTimeZone;
+use InvalidArgumentException;
+use KTXF\Chrono\Entity as E;
+use KTXF\Chrono\Entity\Property as P;
+use Sabre\VObject\Component;
+use Sabre\VObject\Component\VEvent;
+use Sabre\VObject\Component\VJournal;
+use Sabre\VObject\Component\VTodo;
+use Throwable;
+
+/** Decodes the three RFC 5545 calendar object types into Chrono entities. */
+class IcalDecoder {
+
+    public function fromComponent(Component $component): E\EventObject|E\TaskObject|E\JournalObject {
+        return match (true) {
+            $component instanceof VEvent => $this->mapEvent($component),
+            $component instanceof VTodo => $this->mapTask($component),
+            $component instanceof VJournal => $this->mapJournal($component),
+            default => throw new InvalidArgumentException('Unsupported iCalendar component: ' . $component->name),
+        };
+    }
+
+    private function mapEvent(VEvent $event): E\EventObject {
+        $object = new E\EventObject();
+        $this->mapCommon($event, $object);
+        $startProperty = $event->DTSTART ?? null;
+        $object->startsOn = $this->dateTime($event, 'DTSTART');
+        $object->endsOn = $this->dateTime($event, 'DTEND');
+        $object->duration = $this->duration($event);
+        if ($object->endsOn === null && $object->startsOn !== null && $object->duration !== null) {
+            $object->endsOn = $object->startsOn->add($object->duration);
+        }
+        $object->timeless = $startProperty !== null && !$startProperty->hasTime();
+        $object->sequence = isset($event->SEQUENCE) ? (int)(string)$event->SEQUENCE : null;
+        $object->timeZone = $this->timeZone($startProperty);
+        $object->startsTZ = $this->timeZone($startProperty);
+        $object->endsTZ = $this->timeZone($event->DTEND ?? null);
+        $object->priority = isset($event->PRIORITY) ? (int)(string)$event->PRIORITY : null;
+        $object->color = $this->text($event, 'COLOR');
+        $object->availability = strtoupper($this->text($event, 'TRANSP') ?? '') === 'TRANSPARENT'
+            ? P\EventAvailabilityTypes::Free
+            : P\EventAvailabilityTypes::Busy;
+        $object->sensitivity = $this->eventSensitivity($event);
+
+        if ($location = $this->text($event, 'LOCATION')) {
+            $physical = new P\EventLocationPhysicalObject();
+            $physical->label = $location;
+            $physical->relation = 'start';
+            $object->locationsPhysical->add($physical, $this->key());
+        }
+        if ($url = $this->text($event, 'URL')) {
+            $virtual = new P\EventLocationVirtualObject();
+            $virtual->location = $url;
+            $object->locationsVirtual->add($virtual, $this->key());
+        }
+
+        $this->mapOrganizer($event, $object);
+        $this->mapParticipants($event, $object);
+        $object->pattern = $this->eventRecurrence($event);
+        return $object;
+    }
+
+    private function mapTask(VTodo $task): E\TaskObject {
+        $object = new E\TaskObject();
+        $this->mapCommon($task, $object);
+        $object->startsOn = $this->dateTime($task, 'DTSTART');
+        $object->dueOn = $this->dateTime($task, 'DUE');
+        $object->completedOn = $this->dateTime($task, 'COMPLETED');
+        if ($object->dueOn === null && $object->startsOn !== null && ($duration = $this->duration($task)) !== null) {
+            $object->dueOn = $object->startsOn->add($duration);
+        }
+        $object->status = match (strtoupper($this->text($task, 'STATUS') ?? '')) {
+            'NEEDS-ACTION' => P\TaskStatusTypes::NeedsAction,
+            'IN-PROCESS' => P\TaskStatusTypes::InProcess,
+            'COMPLETED' => P\TaskStatusTypes::Completed,
+            'CANCELLED' => P\TaskStatusTypes::Cancelled,
+            default => null,
+        };
+        $object->priority = isset($task->PRIORITY) ? (int)(string)$task->PRIORITY : null;
+        $progress = $task->{'PERCENT-COMPLETE'} ?? $task->PERCENT ?? null;
+        $object->progress = $progress !== null ? max(0, min(100, (int)(string)$progress)) : null;
+        $object->color = $this->text($task, 'COLOR');
+        $object->notes = $this->joinedText($task, 'COMMENT');
+        $object->recurrence = $this->taskRecurrence($task);
+        $this->mapAttachments($task, $object->attachments);
+        return $object;
+    }
+
+    private function mapJournal(VJournal $journal): E\JournalObject {
+        $object = new E\JournalObject();
+        $this->mapCommon($journal, $object);
+        $object->content = $this->joinedText($journal, 'DESCRIPTION');
+        $object->startsOn = $this->dateTime($journal, 'DTSTART');
+        $object->endsOn = $this->dateTime($journal, 'DTEND');
+        if ($object->endsOn === null && $object->startsOn !== null && isset($journal->DTSTART) && !$journal->DTSTART->hasTime()) {
+            $object->endsOn = $object->startsOn->modify('+1 day');
+        }
+        $object->status = match (strtoupper($this->text($journal, 'STATUS') ?? '')) {
+            'DRAFT' => P\JournalStatusTypes::Draft,
+            'FINAL' => P\JournalStatusTypes::Final,
+            'CANCELLED' => P\JournalStatusTypes::Cancelled,
+            default => null,
+        };
+        $object->visibility = match (strtoupper($this->text($journal, 'CLASS') ?? '')) {
+            'PUBLIC' => P\JournalVisibilityTypes::Public,
+            'PRIVATE' => P\JournalVisibilityTypes::Private,
+            'CONFIDENTIAL' => P\JournalVisibilityTypes::Confidential,
+            default => null,
+        };
+        $this->mapAttachments($journal, $object->attachments);
+        return $object;
+    }
+
+    private function mapCommon(
+        Component $component,
+        E\EventObject|E\TaskObject|E\JournalObject $object,
+    ): void {
+        $object->urid = $this->text($component, 'UID');
+        $object->created = $this->dateTime($component, 'CREATED');
+        $object->modified = $this->dateTime($component, 'LAST-MODIFIED');
+        $object->label = $this->text($component, 'SUMMARY');
+        $object->description = $this->text($component, 'DESCRIPTION');
+        foreach ($this->categories($component) as $tag) {
+            $object->tags->add($tag);
+        }
+    }
+
+    private function mapOrganizer(VEvent $event, E\EventObject $object): void {
+        if (!isset($event->ORGANIZER)) return;
+        $object->organizer->realm = P\EventParticipantRealm::External;
+        $object->organizer->address = $this->address((string)$event->ORGANIZER);
+        $object->organizer->name = $this->parameter($event->ORGANIZER, 'CN');
+    }
+
+    private function mapParticipants(VEvent $event, E\EventObject $object): void {
+        foreach ($event->select('ATTENDEE') as $attendee) {
+            $participant = new P\EventParticipantObject();
+            $participant->realm = P\EventParticipantRealm::External;
+            $participant->address = $this->address((string)$attendee);
+            $participant->name = $this->parameter($attendee, 'CN');
+            $participant->language = $this->parameter($attendee, 'LANGUAGE');
+            $participant->type = match (strtoupper($this->parameter($attendee, 'CUTYPE') ?? '')) {
+                'GROUP' => P\EventParticipantTypes::Group,
+                'RESOURCE' => P\EventParticipantTypes::Resource,
+                'ROOM' => P\EventParticipantTypes::Location,
+                default => P\EventParticipantTypes::Individual,
+            };
+            $participant->status = match (strtoupper($this->parameter($attendee, 'PARTSTAT') ?? '')) {
+                'ACCEPTED' => P\EventParticipantStatusTypes::Accepted,
+                'DECLINED' => P\EventParticipantStatusTypes::Declined,
+                'TENTATIVE' => P\EventParticipantStatusTypes::Tentative,
+                'DELEGATED' => P\EventParticipantStatusTypes::Delegated,
+                default => P\EventParticipantStatusTypes::None,
+            };
+            $participant->roles->add(match (strtoupper($this->parameter($attendee, 'ROLE') ?? '')) {
+                'CHAIR' => P\EventParticipantRoleTypes::Chair,
+                'OPT-PARTICIPANT' => P\EventParticipantRoleTypes::Optional,
+                'NON-PARTICIPANT' => P\EventParticipantRoleTypes::Informational,
+                default => P\EventParticipantRoleTypes::Attendee,
+            });
+            $object->participants->add($participant, $this->key());
+        }
+    }
+
+    private function eventRecurrence(VEvent $event): ?P\EventOccurrenceObject {
+        if (!isset($event->RRULE)) return null;
+        $rule = $event->RRULE->getParts();
+        $precision = match (strtoupper((string)($rule['FREQ'] ?? ''))) {
+            'YEARLY' => P\EventOccurrencePrecisionTypes::Yearly,
+            'MONTHLY' => P\EventOccurrencePrecisionTypes::Monthly,
+            'WEEKLY' => P\EventOccurrencePrecisionTypes::Weekly,
+            'DAILY' => P\EventOccurrencePrecisionTypes::Daily,
+            'HOURLY' => P\EventOccurrencePrecisionTypes::Hourly,
+            'MINUTELY' => P\EventOccurrencePrecisionTypes::Minutely,
+            'SECONDLY' => P\EventOccurrencePrecisionTypes::Secondly,
+            default => null,
+        };
+        if ($precision === null) return null;
+        $object = new P\EventOccurrenceObject();
+        $object->pattern = P\EventOccurrencePatternTypes::Relative;
+        $object->precision = $precision;
+        $object->interval = (int)($rule['INTERVAL'] ?? 1);
+        $object->iterations = isset($rule['COUNT']) ? (int)$rule['COUNT'] : null;
+        $object->concludes = isset($rule['UNTIL']) ? $this->parseDate((string)$rule['UNTIL']) : null;
+        $object->onDayOfWeek = $this->weekdays($rule['BYDAY'] ?? []);
+        $object->onDayOfMonth = $this->integers($rule['BYMONTHDAY'] ?? []);
+        $object->onDayOfYear = $this->integers($rule['BYYEARDAY'] ?? []);
+        $object->onWeekOfYear = $this->integers($rule['BYWEEKNO'] ?? []);
+        $object->onMonthOfYear = $this->integers($rule['BYMONTH'] ?? []);
+        $object->onHour = $this->integers($rule['BYHOUR'] ?? []);
+        $object->onMinute = $this->integers($rule['BYMINUTE'] ?? []);
+        $object->onSecond = $this->integers($rule['BYSECOND'] ?? []);
+        $object->onPosition = $this->integers($rule['BYSETPOS'] ?? []);
+        return $object;
+    }
+
+    private function taskRecurrence(VTodo $task): ?P\TaskRecurrenceObject {
+        if (!isset($task->RRULE)) return null;
+        $rule = $task->RRULE->getParts();
+        $frequency = strtolower((string)($rule['FREQ'] ?? ''));
+        if ($frequency === '') return null;
+        $object = new P\TaskRecurrenceObject();
+        $object->frequency = $frequency;
+        $object->interval = (int)($rule['INTERVAL'] ?? 1);
+        $object->count = isset($rule['COUNT']) ? (int)$rule['COUNT'] : null;
+        $object->until = isset($rule['UNTIL']) ? $this->parseDate((string)$rule['UNTIL']) : null;
+        $object->byDay = array_map('strval', $this->values($rule['BYDAY'] ?? []));
+        $object->byMonthDay = $this->integers($rule['BYMONTHDAY'] ?? []);
+        $object->byMonth = $this->integers($rule['BYMONTH'] ?? []);
+        return $object;
+    }
+
+    private function mapAttachments(Component $component, $attachments): void {
+        foreach ($component->select('ATTACH') as $property) {
+            $attachment = new P\AttachmentObject();
+            $attachment->uri = trim((string)$property) ?: null;
+            $attachment->type = $this->parameter($property, 'FMTTYPE');
+            $attachment->label = $this->parameter($property, 'FILENAME') ?? $this->parameter($property, 'X-FILENAME');
+            $attachments->add($attachment, $this->key());
+        }
+    }
+
+    private function eventSensitivity(VEvent $event): ?P\EventSensitivityTypes {
+        return match (strtoupper($this->text($event, 'CLASS') ?? '')) {
+            'PUBLIC' => P\EventSensitivityTypes::Public,
+            'PRIVATE', 'CONFIDENTIAL' => P\EventSensitivityTypes::Private,
+            default => null,
+        };
+    }
+
+    private function dateTime(Component $component, string $name): ?DateTimeImmutable {
+        if (!isset($component->$name)) return null;
+        try { return $component->$name->getDateTime(); }
+        catch (Throwable) { return $this->parseDate((string)$component->$name); }
+    }
+
+    private function duration(Component $component): ?DateInterval {
+        if (!isset($component->DURATION)) return null;
+        try { return $component->DURATION->getDateInterval(); }
+        catch (Throwable) { try { return new DateInterval((string)$component->DURATION); } catch (Throwable) { return null; } }
+    }
+
+    private function timeZone($property): ?DateTimeZone {
+        $tzid = $property?->offsetGet('TZID');
+        if ($tzid === null || trim((string)$tzid) === '') return null;
+        try { return new DateTimeZone((string)$tzid); } catch (Throwable) { return null; }
+    }
+
+    private function parseDate(string $value): ?DateTimeImmutable {
+        try { return new DateTimeImmutable($value); } catch (Throwable) { return null; }
+    }
+
+    private function text(Component $component, string $name): ?string {
+        $value = isset($component->$name) ? trim((string)$component->$name) : '';
+        return $value !== '' ? $value : null;
+    }
+
+    private function joinedText(Component $component, string $name): ?string {
+        $values = array_values(array_filter(array_map(static fn($property): string => trim((string)$property), $component->select($name))));
+        return $values !== [] ? implode("\n\n", $values) : null;
+    }
+
+    private function parameter($property, string $name): ?string {
+        $value = $property[$name] ?? null;
+        return $value !== null && trim((string)$value) !== '' ? trim((string)$value) : null;
+    }
+
+    private function address(string $value): string {
+        return preg_replace('/^mailto:/i', '', trim($value)) ?? trim($value);
+    }
+
+    /** @return list<string> */
+    private function categories(Component $component): array {
+        $result = [];
+        foreach ($component->select('CATEGORIES') as $property) {
+            foreach ($property->getParts() as $part) {
+                if (trim((string)$part) !== '') $result[] = trim((string)$part);
+            }
+        }
+        return array_values(array_unique($result));
+    }
+
+    private function values(string|array $values): array { return is_array($values) ? $values : [$values]; }
+    private function integers(string|array $values): array { return array_map('intval', $this->values($values)); }
+
+    private function weekdays(string|array $values): array {
+        $days = ['MO' => 1, 'TU' => 2, 'WE' => 3, 'TH' => 4, 'FR' => 5, 'SA' => 6, 'SU' => 7];
+        $result = [];
+        foreach ($this->values($values) as $value) {
+            $day = strtoupper(substr((string)$value, -2));
+            if (isset($days[$day])) $result[] = $days[$day];
+        }
+        return $result;
+    }
+
+    private function key(): string { return bin2hex(random_bytes(8)); }
+}

lib/Conversion/IcalEncoder.php

@@ -0,0 +1,387 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * SPDX-FileCopyrightText: Sebastian Krupinski <krupinski01@gmail.com>
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+namespace KTXM\ChronoManager\Conversion;
+
+use DateTime;
+use DateTimeInterface;
+use DateTimeZone;
+use Generator;
+use KTXF\Chrono\Entity as E;
+use KTXF\Chrono\Entity\Property as P;
+use Sabre\VObject\Component;
+use Sabre\VObject\Component\VCalendar;
+
+/**
+ * Encodes Chrono entities into the three RFC 5545 calendar object types.
+ *
+ * Mirror image of {@see IcalDecoder}: every property the decoder reads is
+ * written back, so decode -> encode -> decode is stable.
+ */
+class IcalEncoder {
+
+    private const PRODID = '-//KTX//Chrono//EN';
+
+    /**
+     * Streams a complete iCalendar document, one chunk per component, so large
+     * exports never hold the whole document in memory.
+     *
+     * @param iterable<E\EventObject|E\TaskObject|E\JournalObject> $entities
+     * @return Generator<string>
+     */
+    public function toIcs(iterable $entities): Generator {
+        yield "BEGIN:VCALENDAR\r\nVERSION:2.0\r\nPRODID:" . self::PRODID . "\r\nCALSCALE:GREGORIAN\r\n";
+        $document = new VCalendar();
+        foreach ($entities as $entity) {
+            $component = $this->toComponent($entity, $document);
+            yield $component->serialize();
+            $document->remove($component);
+        }
+        yield "END:VCALENDAR\r\n";
+    }
+
+    /** Convenience wrapper around {@see toIcs()} for single-document callers. */
+    public function toIcsString(iterable $entities): string {
+        return implode('', iterator_to_array($this->toIcs($entities), false));
+    }
+
+    /**
+     * Adds the entity to $document as a VEVENT/VTODO/VJOURNAL and returns it.
+     *
+     * $uidFallback is used when the entity carries no urid (e.g. entities that
+     * were never imported); DAV passes the provider entity identifier here so
+     * object UIDs stay stable across requests.
+     */
+    public function toComponent(
+        E\EventObject|E\TaskObject|E\JournalObject $entity,
+        VCalendar $document,
+        ?string $uidFallback = null,
+    ): Component {
+        return match (true) {
+            $entity instanceof E\EventObject => $this->encodeEvent($entity, $document, $uidFallback),
+            $entity instanceof E\TaskObject => $this->encodeTask($entity, $document, $uidFallback),
+            $entity instanceof E\JournalObject => $this->encodeJournal($entity, $document, $uidFallback),
+        };
+    }
+
+    private function encodeEvent(E\EventObject $entity, VCalendar $document, ?string $uidFallback): Component {
+        $event = $this->createComponent($document, 'VEVENT', $entity, $uidFallback);
+
+        $this->addDate($event, 'DTSTART', $entity->startsOn, (bool)$entity->timeless);
+        $this->addDate($event, 'DTEND', $entity->endsOn, (bool)$entity->timeless);
+        if ($entity->sequence !== null) {
+            $event->add('SEQUENCE', (string)$entity->sequence);
+        }
+        if ($entity->priority !== null) {
+            $event->add('PRIORITY', (string)$entity->priority);
+        }
+        if ($entity->color !== null) {
+            $event->add('COLOR', $entity->color);
+        }
+        // OPAQUE is the RFC 5545 default and what the decoder assumes when
+        // TRANSP is absent, so only the non-default value is emitted.
+        if ($entity->availability === P\EventAvailabilityTypes::Free) {
+            $event->add('TRANSP', 'TRANSPARENT');
+        }
+        if ($entity->sensitivity !== null) {
+            $event->add('CLASS', match ($entity->sensitivity) {
+                P\EventSensitivityTypes::Public => 'PUBLIC',
+                P\EventSensitivityTypes::Private => 'PRIVATE',
+                P\EventSensitivityTypes::Secret => 'CONFIDENTIAL',
+            });
+        }
+
+        foreach ($entity->locationsPhysical as $location) {
+            if ($location->label !== null && $location->label !== '') {
+                $event->add('LOCATION', $location->label);
+                break;
+            }
+        }
+        foreach ($entity->locationsVirtual as $location) {
+            if ($location->location !== null && $location->location !== '') {
+                $event->add('URL', $location->location);
+                break;
+            }
+        }
+
+        $this->encodeOrganizer($event, $entity->organizer);
+        foreach ($entity->participants as $participant) {
+            $this->encodeParticipant($event, $participant);
+        }
+        if ($entity->pattern !== null && ($rule = $this->eventRecurrenceRule($entity->pattern)) !== null) {
+            $event->add('RRULE', $rule);
+        }
+
+        return $event;
+    }
+
+    private function encodeTask(E\TaskObject $entity, VCalendar $document, ?string $uidFallback): Component {
+        $task = $this->createComponent($document, 'VTODO', $entity, $uidFallback);
+
+        $this->addDate($task, 'DTSTART', $entity->startsOn);
+        $this->addDate($task, 'DUE', $entity->dueOn);
+        $this->addDate($task, 'COMPLETED', $entity->completedOn);
+        if ($entity->status !== null) {
+            $task->add('STATUS', strtoupper($entity->status->value));
+        }
+        if ($entity->priority !== null) {
+            $task->add('PRIORITY', (string)$entity->priority);
+        }
+        if ($entity->progress !== null) {
+            $task->add('PERCENT-COMPLETE', (string)$entity->progress);
+        }
+        if ($entity->color !== null) {
+            $task->add('COLOR', $entity->color);
+        }
+        if ($entity->notes !== null) {
+            $task->add('COMMENT', $entity->notes);
+        }
+        if ($entity->recurrence !== null && ($rule = $this->taskRecurrenceRule($entity->recurrence)) !== null) {
+            $task->add('RRULE', $rule);
+        }
+        $this->encodeAttachments($task, $entity->attachments);
+
+        return $task;
+    }
+
+    private function encodeJournal(E\JournalObject $entity, VCalendar $document, ?string $uidFallback): Component {
+        $journal = $this->createComponent($document, 'VJOURNAL', $entity, $uidFallback, description: false);
+
+        // The decoder fills both content and description from DESCRIPTION;
+        // content is the journal body and wins on the way out.
+        if (($body = $entity->content ?? $entity->description) !== null) {
+            $journal->add('DESCRIPTION', $body);
+        }
+        $this->addDate($journal, 'DTSTART', $entity->startsOn);
+        if ($entity->status !== null) {
+            $journal->add('STATUS', strtoupper($entity->status->value));
+        }
+        if ($entity->visibility !== null) {
+            $journal->add('CLASS', strtoupper($entity->visibility->value));
+        }
+        $this->encodeAttachments($journal, $entity->attachments);
+
+        return $journal;
+    }
+
+    /**
+     * Creates the bare component and writes the properties common to all
+     * three types: UID, DTSTAMP, CREATED, LAST-MODIFIED, SUMMARY,
+     * DESCRIPTION, CATEGORIES.
+     */
+    private function createComponent(
+        VCalendar $document,
+        string $name,
+        E\EventObject|E\TaskObject|E\JournalObject $entity,
+        ?string $uidFallback,
+        bool $description = true,
+    ): Component {
+        // Suppress sabre's auto-generated UID/DTSTAMP defaults: UID is set
+        // explicitly below and DTSTAMP must be deterministic — the DAV ETag is
+        // md5 of the serialized output, and a "now" DTSTAMP makes an unchanged
+        // entity produce a new ETag on every request (perpetual client syncs).
+        /** @var Component $component */
+        $component = $document->add($name, [], false);
+
+        $uid = $entity->urid ?? $uidFallback;
+        if ($uid !== null && $uid !== '') {
+            $component->add('UID', $uid);
+        }
+        $stamp = $entity->modified ?? $entity->created;
+        $component->add('DTSTAMP', $stamp !== null ? $this->utc($stamp) : (new DateTime('@0'))->setTimezone(new DateTimeZone('UTC')));
+
+        if ($entity->created !== null) {
+            $component->add('CREATED', $this->utc($entity->created));
+        }
+        if ($entity->modified !== null) {
+            $component->add('LAST-MODIFIED', $this->utc($entity->modified));
+        }
+        if ($entity->label !== null) {
+            $component->add('SUMMARY', $entity->label);
+        }
+        if ($description && $entity->description !== null) {
+            $component->add('DESCRIPTION', $entity->description);
+        }
+        $tags = array_values(array_filter(array_map('strval', $entity->tags->getArrayCopy()), static fn(string $tag): bool => $tag !== ''));
+        if ($tags !== []) {
+            $component->add('CATEGORIES', $tags);
+        }
+
+        return $component;
+    }
+
+    private function encodeOrganizer(Component $component, P\EventOrganizerObject $organizer): void {
+        if ($organizer->address === null || $organizer->address === '') {
+            return;
+        }
+        $parameters = [];
+        if ($organizer->name !== null && $organizer->name !== '') {
+            $parameters['CN'] = $organizer->name;
+        }
+        $component->add('ORGANIZER', 'mailto:' . $organizer->address, $parameters);
+    }
+
+    private function encodeParticipant(Component $component, P\EventParticipantObject $participant): void {
+        if ($participant->address === null || $participant->address === '') {
+            return;
+        }
+        $parameters = [];
+        if ($participant->name !== null && $participant->name !== '') {
+            $parameters['CN'] = $participant->name;
+        }
+        if ($participant->language !== null && $participant->language !== '') {
+            $parameters['LANGUAGE'] = $participant->language;
+        }
+        // Defaults (INDIVIDUAL / no PARTSTAT / ATTENDEE role) are what the
+        // decoder assumes for absent parameters, so only non-defaults are emitted.
+        $type = match ($participant->type) {
+            P\EventParticipantTypes::Group => 'GROUP',
+            P\EventParticipantTypes::Resource => 'RESOURCE',
+            P\EventParticipantTypes::Location => 'ROOM',
+            default => null,
+        };
+        if ($type !== null) {
+            $parameters['CUTYPE'] = $type;
+        }
+        $status = match ($participant->status) {
+            P\EventParticipantStatusTypes::Accepted => 'ACCEPTED',
+            P\EventParticipantStatusTypes::Declined => 'DECLINED',
+            P\EventParticipantStatusTypes::Tentative => 'TENTATIVE',
+            P\EventParticipantStatusTypes::Delegated => 'DELEGATED',
+            default => null,
+        };
+        if ($status !== null) {
+            $parameters['PARTSTAT'] = $status;
+        }
+        foreach ($participant->roles as $role) {
+            $token = match ($role) {
+                P\EventParticipantRoleTypes::Chair => 'CHAIR',
+                P\EventParticipantRoleTypes::Optional => 'OPT-PARTICIPANT',
+                P\EventParticipantRoleTypes::Informational => 'NON-PARTICIPANT',
+                default => null,
+            };
+            if ($token !== null) {
+                $parameters['ROLE'] = $token;
+            }
+            break;
+        }
+        $component->add('ATTENDEE', 'mailto:' . $participant->address, $parameters);
+    }
+
+    private function eventRecurrenceRule(P\EventOccurrenceObject $pattern): ?string {
+        $frequency = match ($pattern->precision) {
+            P\EventOccurrencePrecisionTypes::Yearly => 'YEARLY',
+            P\EventOccurrencePrecisionTypes::Monthly => 'MONTHLY',
+            P\EventOccurrencePrecisionTypes::Weekly => 'WEEKLY',
+            P\EventOccurrencePrecisionTypes::Daily => 'DAILY',
+            P\EventOccurrencePrecisionTypes::Hourly => 'HOURLY',
+            P\EventOccurrencePrecisionTypes::Minutely => 'MINUTELY',
+            P\EventOccurrencePrecisionTypes::Secondly => 'SECONDLY',
+            default => null,
+        };
+        if ($frequency === null) {
+            return null;
+        }
+        $parts = ['FREQ=' . $frequency];
+        if ($pattern->interval !== null && $pattern->interval > 1) {
+            $parts[] = 'INTERVAL=' . $pattern->interval;
+        }
+        if ($pattern->iterations !== null) {
+            $parts[] = 'COUNT=' . $pattern->iterations;
+        }
+        if ($pattern->concludes !== null) {
+            $parts[] = 'UNTIL=' . $this->utc($pattern->concludes)->format('Ymd\THis\Z');
+        }
+        $this->appendRulePart($parts, 'BYDAY', $this->weekdayTokens($pattern->onDayOfWeek));
+        $this->appendRulePart($parts, 'BYMONTHDAY', $pattern->onDayOfMonth);
+        $this->appendRulePart($parts, 'BYYEARDAY', $pattern->onDayOfYear);
+        $this->appendRulePart($parts, 'BYWEEKNO', $pattern->onWeekOfYear);
+        $this->appendRulePart($parts, 'BYMONTH', $pattern->onMonthOfYear);
+        $this->appendRulePart($parts, 'BYHOUR', $pattern->onHour);
+        $this->appendRulePart($parts, 'BYMINUTE', $pattern->onMinute);
+        $this->appendRulePart($parts, 'BYSECOND', $pattern->onSecond);
+        $this->appendRulePart($parts, 'BYSETPOS', $pattern->onPosition);
+        return implode(';', $parts);
+    }
+
+    private function taskRecurrenceRule(P\TaskRecurrenceObject $recurrence): ?string {
+        if ($recurrence->frequency === null || $recurrence->frequency === '') {
+            return null;
+        }
+        $parts = ['FREQ=' . strtoupper($recurrence->frequency)];
+        if ($recurrence->interval !== null && $recurrence->interval > 1) {
+            $parts[] = 'INTERVAL=' . $recurrence->interval;
+        }
+        if ($recurrence->count !== null) {
+            $parts[] = 'COUNT=' . $recurrence->count;
+        }
+        if ($recurrence->until !== null) {
+            $parts[] = 'UNTIL=' . $this->utc($recurrence->until)->format('Ymd\THis\Z');
+        }
+        $this->appendRulePart($parts, 'BYDAY', array_map('strval', $recurrence->byDay));
+        $this->appendRulePart($parts, 'BYMONTHDAY', $recurrence->byMonthDay);
+        $this->appendRulePart($parts, 'BYMONTH', $recurrence->byMonth);
+        return implode(';', $parts);
+    }
+
+    private function appendRulePart(array &$parts, string $name, array $values): void {
+        if ($values !== []) {
+            $parts[] = $name . '=' . implode(',', $values);
+        }
+    }
+
+    /** @return list<string> inverse of the decoder's MO..SU => 1..7 map */
+    private function weekdayTokens(array $days): array {
+        $tokens = [1 => 'MO', 2 => 'TU', 3 => 'WE', 4 => 'TH', 5 => 'FR', 6 => 'SA', 7 => 'SU'];
+        $result = [];
+        foreach ($days as $day) {
+            if (isset($tokens[(int)$day])) {
+                $result[] = $tokens[(int)$day];
+            }
+        }
+        return $result;
+    }
+
+    private function encodeAttachments(Component $component, $attachments): void {
+        foreach ($attachments as $attachment) {
+            if ($attachment->uri === null || $attachment->uri === '') {
+                continue;
+            }
+            $parameters = [];
+            if ($attachment->type !== null && $attachment->type !== '') {
+                $parameters['FMTTYPE'] = $attachment->type;
+            }
+            if ($attachment->label !== null && $attachment->label !== '') {
+                $parameters['FILENAME'] = $attachment->label;
+            }
+            $component->add('ATTACH', $attachment->uri, $parameters);
+        }
+    }
+
+    /**
+     * Date-times are always emitted in UTC ("...Z"): a value carrying a fixed
+     * numeric offset (e.g. from an RFC3339 string) would otherwise serialize
+     * as a TZID with no matching VTIMEZONE, which clients reject. Timeless
+     * (all-day) values are emitted as DATE.
+     */
+    private function addDate(Component $component, string $name, ?DateTimeInterface $value, bool $dateOnly = false): void {
+        if ($value === null) {
+            return;
+        }
+        if ($dateOnly) {
+            $component->add($name, $value->format('Ymd'), ['VALUE' => 'DATE']);
+        } else {
+            $component->add($name, $this->utc($value));
+        }
+    }
+
+    private function utc(DateTimeInterface $value): DateTime {
+        return (new DateTime('@' . $value->getTimestamp()))->setTimezone(new DateTimeZone('UTC'));
+    }
+}

lib/Export/ExportService.php

@@ -0,0 +1,93 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * SPDX-FileCopyrightText: Sebastian Krupinski <krupinski01@gmail.com>
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+namespace KTXM\ChronoManager\Export;
+
+use Generator;
+use KTXF\Chrono\Entity\EventObject;
+use KTXF\Chrono\Entity\JournalObject;
+use KTXF\Chrono\Entity\TaskObject;
+use KTXF\Resource\Identifier\CollectionIdentifier;
+use KTXF\Resource\Identifier\EntityIdentifier;
+use KTXF\Resource\Identifier\ResourceIdentifiers;
+use KTXM\ChronoManager\Manager;
+use KTXM\ChronoManager\Conversion\IcalEncoder;
+use Psr\Log\LoggerInterface;
+use Throwable;
+
+/** Exports Chrono entities as a streamed RFC 5545 iCalendar document. */
+class ExportService {
+
+    public function __construct(
+        private readonly Manager $manager,
+        private readonly IcalEncoder $encoder,
+        private readonly LoggerInterface $logger,
+    ) {}
+
+    /**
+     * @param ResourceIdentifiers $sources collection and/or entity identifiers
+     * @return Generator<string> iCalendar document chunks
+     */
+    public function export(ResourceIdentifiers $sources, string $tenantId, string $userId): Generator {
+        yield from $this->encoder->toIcs($this->entities($sources, $tenantId, $userId));
+    }
+
+    /** @return Generator<EventObject|TaskObject|JournalObject> */
+    private function entities(ResourceIdentifiers $sources, string $tenantId, string $userId): Generator {
+        $collections = [];
+        $entities = [];
+        foreach ($sources as $source) {
+            if ($source instanceof EntityIdentifier) {
+                $entities[] = $source;
+            } elseif ($source instanceof CollectionIdentifier) {
+                $collections[] = $source;
+            }
+        }
+
+        if ($collections !== []) {
+            $listed = $this->manager->entityListBulk($tenantId, $userId, new ResourceIdentifiers($collections));
+            foreach ($listed as $services) {
+                foreach ($services as $collectionSets) {
+                    foreach ($collectionSets as $set) {
+                        foreach ((array)$set as $entity) {
+                            if (($hydrated = $this->hydrate($entity)) !== null) {
+                                yield $hydrated;
+                            }
+                        }
+                    }
+                }
+            }
+        }
+
+        if ($entities !== []) {
+            foreach ($this->manager->entityFetchBulk($tenantId, $userId, ...$entities) as $entity) {
+                if (($hydrated = $this->hydrate($entity)) !== null) {
+                    yield $hydrated;
+                }
+            }
+        }
+    }
+
+    /** Skip-and-continue on per-entity failure, matching import's error-tolerant posture. */
+    private function hydrate(mixed $entity): EventObject|TaskObject|JournalObject|null {
+        if (!is_object($entity)) {
+            return null;
+        }
+        try {
+            $hydrated = $entity->getProperties();
+            // DAV-created entities may carry no urid; the provider identifier
+            // keeps exported UIDs stable in that case.
+            $hydrated->urid ??= (string)$entity->identifier();
+            return $hydrated;
+        } catch (Throwable $t) {
+            $this->logger->warning('Skipping entity during export', ['exception' => $t]);
+            return null;
+        }
+    }
+}

lib/Import/ImportCountEvent.php

@@ -0,0 +1,25 @@
+<?php
+
+declare(strict_types=1);
+
+namespace KTXM\ChronoManager\Import;
+
+use KTXM\ChronoManager\Stream\ExpectedTotal;
+
+final readonly class ImportCountEvent implements ImportEvent, ExpectedTotal {
+
+    public function __construct(
+        public int $total,
+    ) {}
+
+    public function expectedTotal(): int {
+        return $this->total;
+    }
+
+    /**
+     * @return array{total: int}
+     */
+    public function jsonSerialize(): array {
+        return ['total' => $this->total];
+    }
+}

lib/Import/ImportDisposition.php

@@ -0,0 +1,17 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * SPDX-FileCopyrightText: Sebastian Krupinski <krupinski01@gmail.com>
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+namespace KTXM\ChronoManager\Import;
+
+enum ImportDisposition: string {
+    case Created = 'created';
+    case Updated = 'updated';
+    case Exists = 'exists';
+    case Error = 'error';
+}

lib/Import/ImportEvent.php

@@ -0,0 +1,15 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * SPDX-FileCopyrightText: Sebastian Krupinski <krupinski01@gmail.com>
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+namespace KTXM\ChronoManager\Import;
+
+use JsonSerializable;
+
+interface ImportEvent extends JsonSerializable {
+}

lib/Import/ImportObjectEvent.php

@@ -0,0 +1,37 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * SPDX-FileCopyrightText: Sebastian Krupinski <krupinski01@gmail.com>
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+namespace KTXM\ChronoManager\Import;
+
+final readonly class ImportObjectEvent implements ImportEvent {
+
+    /**
+     * @param list<string> $errors
+     */
+    public function __construct(
+        public ?string $identifier,
+        public ImportDisposition $disposition,
+        public array $errors = [],
+    ) {}
+
+    public function isError(): bool {
+        return $this->disposition === ImportDisposition::Error;
+    }
+
+    /**
+     * @return array{identifier: ?string, disposition: string, errors: list<string>}
+     */
+    public function jsonSerialize(): array {
+        return [
+            'identifier'  => $this->identifier,
+            'disposition' => $this->disposition->value,
+            'errors'      => $this->errors,
+        ];
+    }
+}

lib/Import/ImportOptions.php

@@ -0,0 +1,66 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * SPDX-FileCopyrightText: Sebastian Krupinski <krupinski01@gmail.com>
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+namespace KTXM\ChronoManager\Import;
+
+use InvalidArgumentException;
+
+final class ImportOptions {
+
+    public const ERROR_CONTINUE = 0;
+    public const ERROR_FAIL     = 1;
+    public const ERROR_OPTIONS  = [self::ERROR_CONTINUE, self::ERROR_FAIL];
+
+    /** Overwrite an existing entity when the same UID is already present. */
+    private bool $supersede = false;
+
+    /** Emit an ImportCountEvent (discovered total) before the object stream. */
+    private bool $counts = true;
+
+    /** How to handle per-object errors. */
+    private int $errors = self::ERROR_CONTINUE;
+
+    public function getSupersede(): bool {
+        return $this->supersede;
+    }
+
+    public function setSupersede(bool $value): void {
+        $this->supersede = $value;
+    }
+
+    public function getCounts(): bool {
+        return $this->counts;
+    }
+
+    public function setCounts(bool $value): void {
+        $this->counts = $value;
+    }
+
+    public function getErrors(): int {
+        return $this->errors;
+    }
+
+    public function setErrors(int $value): void {
+        if (!in_array($value, self::ERROR_OPTIONS, true)) {
+            throw new InvalidArgumentException('Invalid errors option specified');
+        }
+        $this->errors = $value;
+    }
+
+    public static function fromArray(array $data): self {
+        $options = new self();
+        $options->supersede = (bool)($data['supersede'] ?? false);
+        $options->counts = (bool)($data['counts'] ?? true);
+        $options->errors = (int)($data['errors'] ?? self::ERROR_CONTINUE);
+        if (!in_array($options->errors, [self::ERROR_CONTINUE, self::ERROR_FAIL], true)) {
+            throw new InvalidArgumentException('Invalid errors option specified');
+        }
+        return $options;
+    }
+}

lib/Import/ImportService.php

@@ -0,0 +1,75 @@
+<?php
+
+declare(strict_types=1);
+
+namespace KTXM\ChronoManager\Import;
+
+use Generator;
+use InvalidArgumentException;
+use KTXF\Resource\Identifier\CollectionIdentifier;
+use KTXM\ChronoManager\Manager;
+use KTXM\ChronoManager\Conversion\IcalDecoder;
+use Sabre\VObject\Component\VCalendar;
+use Sabre\VObject\Component\VEvent;
+use Sabre\VObject\Component\VJournal;
+use Sabre\VObject\Component\VTodo;
+use Sabre\VObject\Parser\MimeDir;
+use Sabre\VObject\Reader;
+use Throwable;
+
+/** Imports the three RFC 5545 calendar object types into Chrono entities. */
+class ImportService {
+
+    public function __construct(
+        private readonly Manager $manager,
+        private readonly IcalDecoder $decoder,
+    ) {}
+
+    /**
+     * @param resource $source readable, seekable iCalendar resource
+     * @return Generator<int, ImportEvent>
+     */
+    public function import($source, CollectionIdentifier $target, ImportOptions $options, string $tenantId, string $userId): Generator {
+        if (!is_resource($source)) {
+            throw new InvalidArgumentException('Invalid import source: must be a file resource');
+        }
+
+        try {
+            rewind($source);
+            $calendar = Reader::read($source, MimeDir::OPTION_FORGIVING | MimeDir::OPTION_IGNORE_INVALID_LINES);
+            if (!$calendar instanceof VCalendar) {
+                throw new InvalidArgumentException('Supplied input is not an iCalendar document');
+            }
+        } catch (Throwable $e) {
+            if ($options->getCounts()) {
+                yield new ImportCountEvent(0);
+            }
+            yield new ImportObjectEvent(null, ImportDisposition::Error, ['Malformed iCalendar: ' . $e->getMessage()]);
+            return;
+        }
+
+        $components = array_values(array_filter(
+            $calendar->children(),
+            static fn($component): bool => $component instanceof VEvent
+                || $component instanceof VTodo
+                || $component instanceof VJournal,
+        ));
+
+        if ($options->getCounts()) {
+            yield new ImportCountEvent(count($components));
+        }
+
+        foreach ($components as $component) {
+            $uid = isset($component->UID) ? (trim((string)$component->UID) ?: null) : null;
+            try {
+                $this->manager->entityCreate($tenantId, $userId, $target, $this->decoder->fromComponent($component));
+                yield new ImportObjectEvent($uid, ImportDisposition::Created);
+            } catch (Throwable $e) {
+                yield new ImportObjectEvent($uid, ImportDisposition::Error, [$e->getMessage()]);
+                if ($options->getErrors() === ImportOptions::ERROR_FAIL) {
+                    return;
+                }
+            }
+        }
+    }
+}

lib/Module.php

@@ -14,6 +14,15 @@ class Module extends ModuleInstanceAbstract implements ModuleBrowserInterface
     public function __construct()
     { }
 
+    public function boot(): void
+    {
+        // Load module-local vendored dependencies used by iCalendar import.
+        $vendorAutoload = __DIR__ . '/vendor/autoload.php';
+        if (file_exists($vendorAutoload)) {
+            require_once $vendorAutoload;
+        }
+    }
+
     public function handle(): string
     {
         return 'chrono_manager';

lib/Stream/ExpectedTotal.php

@@ -0,0 +1,20 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * SPDX-FileCopyrightText: Sebastian Krupinski <krupinski01@gmail.com>
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+namespace KTXM\ChronoManager\Stream;
+
+/**
+ * Implemented by a stream event that declares, up front, how many data frames
+ * are expected to follow. When such an event leads a stream generator, the
+ * envelope writer folds its value into the `control:start` frame's `total`
+ * (the progress denominator) instead of emitting it as a `data` frame.
+ */
+interface ExpectedTotal {
+    public function expectedTotal(): int;
+}

package.json

@@ -7,17 +7,24 @@
     "build": "vite build --mode production --config vite.config.ts",
     "dev": "vite build --mode development --config vite.config.ts",
     "watch": "vite build --mode development --watch --config vite.config.ts",
-    "typecheck": "vue-tsc --noEmit"
+    "typecheck": "vue-tsc --noEmit",
+    "test": "vitest run --config tests/js/vitest.config.ts",
+    "test:unit": "vitest run --config tests/js/vitest.config.ts",
+    "test:watch": "vitest watch --config tests/js/vitest.config.ts",
+    "test:coverage": "vitest run --coverage --config tests/js/vitest.config.ts"
   },
   "dependencies": {
-    "pinia": "^2.3.0",
+    "pinia": "^4.0.0",
     "vue": "^3.5.13"
   },
   "devDependencies": {
-    "@tsconfig/node22": "^22.0.0",
-    "@types/node": "^22.10.1",
-    "@vue/tsconfig": "^0.8.0",
-    "typescript": "~5.7.2",
-    "vite": "^6.0.3"
+    "@tsconfig/node24": "^24.0.0",
+    "@types/node": "^24.0.0",
+    "@vue/tsconfig": "^0.9.0",
+    "typescript": "~6.0.0",
+    "vite": "^8.0.0",
+    "@vitest/coverage-v8": "^4.1.6",
+    "jsdom": "^29.1.1",
+    "vitest": "^4.1.6"
   }
 }

src/models/clone-plain.ts

@@ -0,0 +1,27 @@
+import { isProxy, toRaw } from 'vue';
+
+function normalizeCloneable<T>(value: T): T {
+    if (value === null || value === undefined) {
+        return value;
+    }
+
+    if (typeof value !== 'object') {
+        return value;
+    }
+
+    const rawValue = isProxy(value) ? toRaw(value) : value;
+
+    if (Array.isArray(rawValue)) {
+        return rawValue.map(item => normalizeCloneable(item)) as T;
+    }
+
+    const plainObject = Object.fromEntries(
+        Object.entries(rawValue).map(([key, nestedValue]) => [key, normalizeCloneable(nestedValue)])
+    );
+
+    return plainObject as T;
+}
+
+export function clonePlain<T>(value: T): T {
+    return structuredClone(normalizeCloneable(value));
+}

src/models/collection.ts

@@ -1,47 +1,52 @@
 /**
- * Class model for Collection Interface
+ * Class models for Collection interfaces
  */
 
-import type { CollectionContentTypes, CollectionInterface, CollectionPropertiesInterface } from "@/types/collection";
+import type {
+    CollectionContentTypes,
+    CollectionInterface,
+    CollectionModelInterface,
+    CollectionPropertiesInterface,
+    CollectionPropertiesModelInterface
+} from '@/types/collection';
+import type {
+    CollectionIdentifier,
+    ServiceIdentifier
+} from '@/types/common';
+import { clonePlain } from './clone-plain';
 
-export class CollectionObject implements CollectionInterface {
+export class CollectionObject implements CollectionModelInterface {
 
-    _data!: CollectionInterface;
+    private _data: CollectionInterface<CollectionPropertiesInterface>;
+    private _properties: CollectionPropertiesObject | undefined = undefined;
 
     constructor() {
         this._data = {
+            '@type': 'people:collection',
+            version: 1,
             provider: '',
-            service: '',
-            collection: null,
-            identifier: '',
-            signature: null,
-            created: null,
-            modified: null,
-            properties: new CollectionPropertiesObject(),
+            service: '' as ServiceIdentifier,
+            collection: null as CollectionIdentifier | null,
+            identifier: '' as CollectionIdentifier,
+            properties: new CollectionPropertiesObject().toJson(),
         };
     }
 
     fromJson(data: CollectionInterface): CollectionObject {
-        this._data = data;
-        if (data.properties) {
-            this._data.properties = new CollectionPropertiesObject().fromJson(data.properties as CollectionPropertiesInterface);
-        }
+        this._data = clonePlain(data);
+        this._properties = undefined;
         return this;
     }
 
     toJson(): CollectionInterface {
-        const json = { ...this._data };
-        if (this._data.properties instanceof CollectionPropertiesObject) {
-            json.properties = this._data.properties.toJson();
-        }
-        return json;
+        const json = this._properties
+            ? { ...this._data, properties: this._properties.toJson() }
+            : this._data;
+        return clonePlain(json);
     }
 
     clone(): CollectionObject {
-        const cloned = new CollectionObject();
-        cloned._data = { ...this._data };
-        cloned._data.properties = this.properties.clone();
-        return cloned;
+        return new CollectionObject().fromJson(this.toJson());
     }
 
     /** Immutable Properties */
@@ -50,16 +55,16 @@ export class CollectionObject implements CollectionInterface {
         return this._data.provider;
     }
 
-    get service(): string | number {
-        return this._data.service;
+    get service(): ServiceIdentifier {
+        return this._data.service as ServiceIdentifier;
     }
 
-    get collection(): string | number | null {
-        return this._data.collection;
+    get collection(): CollectionIdentifier | null {
+        return this._data.collection as CollectionIdentifier | null;
     }
 
-    get identifier(): string | number {
-        return this._data.identifier;
+    get identifier(): CollectionIdentifier {
+        return this._data.identifier as CollectionIdentifier;
     }
 
     get signature(): string | null | undefined {
@@ -74,37 +79,33 @@ export class CollectionObject implements CollectionInterface {
         return this._data.modified;
     }
 
-    get properties(): CollectionPropertiesObject {
-        if (this._data.properties instanceof CollectionPropertiesObject) {
-            return this._data.properties;
-        }
+    /** Mutable Properties */
 
-        if (this._data.properties) {
-            const hydrated = new CollectionPropertiesObject().fromJson(this._data.properties as CollectionPropertiesInterface);
-            this._data.properties = hydrated;
-            return hydrated;
+    get properties(): CollectionPropertiesObject {
+        if (this._properties) {
+            return this._properties;
+        }
+        else if (this._data.properties) {
+            const properties = new CollectionPropertiesObject().fromJson(this._data.properties as CollectionPropertiesInterface);
+            this._properties = properties;
+            return properties;
         }
 
         return new CollectionPropertiesObject();
     }
 
     set properties(value: CollectionPropertiesObject) {
-        if (value instanceof CollectionPropertiesObject) {
-            this._data.properties = value as any;
-        } else {
-            this._data.properties = value;
-        }
+        this._properties = value;
     }
 }
 
-export class CollectionPropertiesObject implements CollectionPropertiesInterface {
+export class CollectionPropertiesObject implements CollectionPropertiesModelInterface {
     
-    _data!: CollectionPropertiesInterface;
+    private _data: CollectionPropertiesInterface;
 
     constructor() {
         this._data = {
-            '@type': 'chrono:collection',
-            version: 1,
+            '@type': 'chrono:calendar',
             content: [],
             label: '',
             description: null,
@@ -115,32 +116,22 @@ export class CollectionPropertiesObject implements CollectionPropertiesInterface
     }
 
     fromJson(data: CollectionPropertiesInterface): CollectionPropertiesObject {
-        this._data = data;
+        this._data = clonePlain(data);
         return this;
     }
 
     toJson(): CollectionPropertiesInterface {
-        return this._data;
+        return clonePlain(this._data);
     }
 
     clone(): CollectionPropertiesObject {
-        const cloned = new CollectionPropertiesObject();
-        cloned._data = { ...this._data };
-        return cloned;
+        return new CollectionPropertiesObject().fromJson(this.toJson());
     }
 
     /** Immutable Properties */
 
-    get '@type'(): string {
-        return this._data['@type'];
-    }
-
-    get version(): number {
-        return this._data.version;
-    }
-
     get content(): CollectionContentTypes[] {
-        return this._data.content || [];
+        return this._data.content ?? [];
     }
 
     /** Mutable Properties */

src/models/entity.ts

@@ -1,106 +1,102 @@
 /**
  * Class model for Entity Interface
  */
-import type { EntityInterface } from "@/types/entity";
-import type { EventInterface } from "@/types/event";
-import type { TaskInterface } from "@/types/task";
-import type { JournalInterface } from "@/types/journal";
-import { EventObject } from "./event";
-import { TaskObject } from "./task";
-import { JournalObject } from "./journal";
 
-export class EntityObject implements EntityInterface {
+import type { CollectionIdentifier, EntityIdentifier } from '@/types/common';
+import type { EntityInterface, EntityModelInterface, EntityPropertiesInterface } from '@/types/entity';
+import type { EventInterface } from '@/types/event';
+import type { JournalInterface } from '@/types/journal';
+import type { TaskInterface } from '@/types/task';
+import { EventObject } from './event';
+import { JournalObject } from './journal';
+import { TaskObject } from './task';
+import { clonePlain } from './clone-plain';
 
-    _data!: EntityInterface;
+export type EntityPropertiesObject = EventObject | TaskObject | JournalObject;
+
+export class EntityObject implements EntityModelInterface {
+    private _data: EntityInterface<EntityPropertiesInterface>;
+    private _properties: EntityPropertiesObject | undefined;
 
     constructor() {
         this._data = {
+            '@type': 'chrono:entity',
+            version: 1,
             provider: '',
             service: '',
-            collection: '',
-            identifier: '',
+            collection: '' as CollectionIdentifier,
+            identifier: '' as EntityIdentifier,
             signature: null,
             created: null,
             modified: null,
-            properties: new EventObject(),
+            properties: new EventObject().toJson(),
         };
     }
 
     fromJson(data: EntityInterface): EntityObject {
-        this._data = data
-        if (data.properties) {
-            const type = data.properties.type
-            if (type === 'task') {
-                this._data.properties = new TaskObject().fromJson(data.properties as TaskInterface);
-            } else if (type === 'journal') {
-                this._data.properties = new JournalObject().fromJson(data.properties as JournalInterface);
-            } else {
-                this._data.properties = new EventObject().fromJson(data.properties as EventInterface);
-            }
-        }
+        this._data = clonePlain(data);
+        this._properties = undefined;
         return this;
     }
 
     toJson(): EntityInterface {
-        const json = { ...this._data }
-        if (this._data.properties instanceof EventObject ||
-            this._data.properties instanceof TaskObject ||
-            this._data.properties instanceof JournalObject) {
-            json.properties = this._data.properties.toJson();
-        }
-        return json as EntityInterface
+        const json = this._properties
+            ? { ...this._data, properties: this._properties.toJson() }
+            : this._data;
+        return clonePlain(json);
     }
 
     clone(): EntityObject {
-        const cloned = new EntityObject()
-        cloned._data = { ...this._data }
-        return cloned
+        return new EntityObject().fromJson(this.toJson());
     }
 
-    /** Immutable Properties */
+    /** Metadata Properties */
 
     get provider(): string {
-        return this._data.provider
+        return this._data.provider;
     }
 
     get service(): string {
-        return this._data.service
+        return this._data.service;
     }
 
-    get collection(): string | number {
-        return this._data.collection
+    get collection(): CollectionIdentifier {
+        return this._data.collection;
     }
 
-    get identifier(): string | number {
-        return this._data.identifier
+    get identifier(): EntityIdentifier {
+        return this._data.identifier;
     }
 
     get signature(): string | null {
-        return this._data.signature
+        return this._data.signature;
     }
 
     get created(): string | null {
-        return this._data.created
+        return this._data.created;
     }
 
     get modified(): string | null {
-        return this._data.modified
+        return this._data.modified;
     }
 
-    get properties(): EventObject | TaskObject | JournalObject {
-        if (this._data.properties instanceof EventObject ||
-            this._data.properties instanceof TaskObject ||
-            this._data.properties instanceof JournalObject) {
-            return this._data.properties
+    /** Entity Properties (individual | organization | group) */
+
+    get properties(): EntityPropertiesObject {
+        if (this._properties) return this._properties;
+
+        const raw = this._data.properties;
+        if (raw.type === 'task') {
+            this._properties = new TaskObject().fromJson(raw as TaskInterface);
+        } else if (raw.type === 'journal') {
+            this._properties = new JournalObject().fromJson(raw as JournalInterface);
+        } else {
+            this._properties = new EventObject().fromJson(raw as EventInterface);
+        }
+        return this._properties;
     }
 
-        const defaultProperties = new EventObject();
-        this._data.properties = defaultProperties;
-        return defaultProperties
+    set properties(value: EntityPropertiesObject) {
+        this._properties = value;
     }
-
-    set properties(value: EventObject | TaskObject | JournalObject) {
-        this._data.properties = value
-    }
-
 }

src/models/event.ts

@@ -114,8 +114,15 @@ export class EventObject implements EventInterface {
     }
 
     toJson(): EventInterface {
+        const data = {
+            ...this._data,
+            pattern: this._data.pattern instanceof EventOccurrenceObject
+                ? this._data.pattern.toJson()
+                : this._data.pattern,
+        };
+
         // Return a deep copy to avoid external modifications
-        return JSON.parse(JSON.stringify(this._data));
+        return JSON.parse(JSON.stringify(data));
     }
 
     clone(): EventObject {

src/models/identity.ts

@@ -1,196 +1,124 @@
 /**
- * Identity implementation classes for Mail Manager services
+ * Identity models for Chrono Manager services
  */
 
 import type {
     ServiceIdentity,
-  ServiceIdentityNone,
     ServiceIdentityBasic,
-  ServiceIdentityToken,
+    ServiceIdentityCertificate,
+    ServiceIdentityNone,
     ServiceIdentityOAuth,
-  ServiceIdentityCertificate
+    ServiceIdentityToken
 } from '@/types/service';
+import { clonePlain } from './clone-plain';
+import { MutationProxy } from './mutation-proxy';
 
-/**
- * Base Identity class
- */
-export abstract class Identity {
-  abstract toJson(): ServiceIdentity;
+export abstract class Identity<T extends ServiceIdentity = ServiceIdentity> {
+    protected _original: T;
+    protected _mutated: Partial<T>;
+    protected _mutationProxy: MutationProxy<T>;
+    protected _data: T;
+
+    protected constructor(initial: T) {
+        this._original = clonePlain(initial);
+        this._mutated = {};
+        this._mutationProxy = new MutationProxy<T>(() => this._original, () => this._mutated);
+        this._data = this._mutationProxy.create();
+    }
+
+    protected load(data: T): this {
+        this._original = clonePlain(data);
+        this._mutated = {};
+        this._data = this._mutationProxy.create();
+        return this;
+    }
+
+    toJSON(): ServiceIdentity { return this.toJson(); }
+    toJson(): T;
+    toJson(delta: true): Partial<T>;
+    toJson(delta?: boolean): T | Partial<T> {
+        return delta
+            ? clonePlain(this._mutated)
+            : { ...clonePlain(this._original), ...clonePlain(this._mutated) };
+    }
+
+    abstract clone(): Identity;
+    mutated(): boolean { return Reflect.ownKeys(this._mutated).length > 0; }
 
     static fromJson(data: ServiceIdentity): Identity {
         switch (data.type) {
-      case 'NA':
-        return IdentityNone.fromJson(data);
-      case 'BA':
-        return IdentityBasic.fromJson(data);
-      case 'TA':
-        return IdentityToken.fromJson(data);
-      case 'OA':
-        return IdentityOAuth.fromJson(data);
-      case 'CC':
-        return IdentityCertificate.fromJson(data);
-      default:
-        throw new Error(`Unknown identity type: ${(data as any).type}`);
+            case 'NA': return IdentityNone.fromJson(data);
+            case 'BA': return IdentityBasic.fromJson(data);
+            case 'TA': return IdentityToken.fromJson(data);
+            case 'OA': return IdentityOAuth.fromJson(data);
+            case 'CC': return IdentityCertificate.fromJson(data);
+            default: throw new Error(`Unknown identity type: ${(data as any).type}`);
         }
     }
 }
 
-/**
- * No authentication
- */
-export class IdentityNone extends Identity {
-  readonly type = 'NA' as const;
-
-  static fromJson(_data: ServiceIdentityNone): IdentityNone {
-    return new IdentityNone();
+export class IdentityNone extends Identity<ServiceIdentityNone> {
+    constructor() { super({ type: 'NA' }); }
+    static fromJson(_data: ServiceIdentityNone): IdentityNone { return new IdentityNone(); }
+    clone(): IdentityNone { return IdentityNone.fromJson(this.toJson()); }
+    get type(): 'NA' { return this._data.type; }
 }
 
-  toJson(): ServiceIdentityNone {
-    return {
-      type: this.type
-    };
-  }
+export class IdentityBasic extends Identity<ServiceIdentityBasic> {
+    constructor(identity: string = '', secret: string = '') { super({ type: 'BA', identity, secret }); }
+    static fromJson(data: ServiceIdentityBasic): IdentityBasic { return new IdentityBasic().load(data); }
+    clone(): IdentityBasic { return IdentityBasic.fromJson(this.toJson()); }
+    get type(): 'BA' { return this._data.type; }
+    get identity(): string { return this._data.identity; }
+    set identity(value: string) { this._data.identity = value; }
+    get secret(): string { return this._data.secret; }
+    set secret(value: string) { this._data.secret = value; }
 }
 
-/**
- * Basic authentication (username/password)
- */
-export class IdentityBasic extends Identity {
-  readonly type = 'BA' as const;
-  identity: string;
-  secret: string;
-
-  constructor(identity: string = '', secret: string = '') {
-    super();
-    this.identity = identity;
-    this.secret = secret;
+export class IdentityToken extends Identity<ServiceIdentityToken> {
+    constructor(token: string = '') { super({ type: 'TA', token }); }
+    static fromJson(data: ServiceIdentityToken): IdentityToken { return new IdentityToken().load(data); }
+    clone(): IdentityToken { return IdentityToken.fromJson(this.toJson()); }
+    get type(): 'TA' { return this._data.type; }
+    get token(): string { return this._data.token; }
+    set token(value: string) { this._data.token = value; }
 }
 
-  static fromJson(data: ServiceIdentityBasic): IdentityBasic {
-    return new IdentityBasic(data.identity, data.secret);
+export class IdentityOAuth extends Identity<ServiceIdentityOAuth> {
+    constructor(accessToken: string = '', accessScope?: string[], accessExpiry?: number, refreshToken?: string, refreshLocation?: string) {
+        super({ type: 'OA', accessToken, accessScope, accessExpiry, refreshToken, refreshLocation });
     }
 
-  toJson(): ServiceIdentityBasic {
-    return {
-      type: this.type,
-      identity: this.identity,
-      secret: this.secret
-    };
-  }
+    static fromJson(data: ServiceIdentityOAuth): IdentityOAuth { return new IdentityOAuth().load(data); }
+    clone(): IdentityOAuth { return IdentityOAuth.fromJson(this.toJson()); }
+    isExpired(): boolean { return this.accessExpiry ? Date.now() / 1000 >= this.accessExpiry : false; }
+    expiresIn(): number { return this.accessExpiry ? Math.max(0, this.accessExpiry - Date.now() / 1000) : Infinity; }
+
+    get type(): 'OA' { return this._data.type; }
+    get accessToken(): string { return this._data.accessToken; }
+    set accessToken(value: string) { this._data.accessToken = value; }
+    get accessScope(): string[] | undefined { return this._data.accessScope ? [...this._data.accessScope] : undefined; }
+    set accessScope(value: string[] | undefined) { this._data.accessScope = value ? [...value] : undefined; }
+    get accessExpiry(): number | undefined { return this._data.accessExpiry; }
+    set accessExpiry(value: number | undefined) { this._data.accessExpiry = value; }
+    get refreshToken(): string | undefined { return this._data.refreshToken; }
+    set refreshToken(value: string | undefined) { this._data.refreshToken = value; }
+    get refreshLocation(): string | undefined { return this._data.refreshLocation; }
+    set refreshLocation(value: string | undefined) { this._data.refreshLocation = value; }
 }
 
-/**
- * Token authentication (API key, static token)
- */
-export class IdentityToken extends Identity {
-  readonly type = 'TA' as const;
-  token: string;
-
-  constructor(token: string = '') {
-    super();
-    this.token = token;
-  }
-
-  static fromJson(data: ServiceIdentityToken): IdentityToken {
-    return new IdentityToken(data.token);
-  }
-
-  toJson(): ServiceIdentityToken {
-    return {
-      type: this.type,
-      token: this.token
-    };
-  }
-}
-
-/**
- * OAuth authentication
- */
-export class IdentityOAuth extends Identity {
-  readonly type = 'OA' as const;
-  accessToken: string;
-  accessScope?: string[];
-  accessExpiry?: number;
-  refreshToken?: string;
-  refreshLocation?: string;
-
-  constructor(
-    accessToken: string = '',
-    accessScope?: string[],
-    accessExpiry?: number,
-    refreshToken?: string,
-    refreshLocation?: string
-  ) {
-    super();
-    this.accessToken = accessToken;
-    this.accessScope = accessScope;
-    this.accessExpiry = accessExpiry;
-    this.refreshToken = refreshToken;
-    this.refreshLocation = refreshLocation;
-  }
-
-  static fromJson(data: ServiceIdentityOAuth): IdentityOAuth {
-    return new IdentityOAuth(
-      data.accessToken,
-      data.accessScope,
-      data.accessExpiry,
-      data.refreshToken,
-      data.refreshLocation
-    );
-  }
-
-  toJson(): ServiceIdentityOAuth {
-    return {
-      type: this.type,
-      accessToken: this.accessToken,
-      ...(this.accessScope && { accessScope: this.accessScope }),
-      ...(this.accessExpiry && { accessExpiry: this.accessExpiry }),
-      ...(this.refreshToken && { refreshToken: this.refreshToken }),
-      ...(this.refreshLocation && { refreshLocation: this.refreshLocation })
-    };
-  }
-
-  isExpired(): boolean {
-    if (!this.accessExpiry) return false;
-    return Date.now() / 1000 >= this.accessExpiry;
-  }
-
-  expiresIn(): number {
-    if (!this.accessExpiry) return Infinity;
-    return Math.max(0, this.accessExpiry - Date.now() / 1000);
-  }
-}
-
-/**
- * Client certificate authentication (mTLS)
- */
-export class IdentityCertificate extends Identity {
-  readonly type = 'CC' as const;
-  certificate: string;
-  privateKey: string;
-  passphrase?: string;
-
+export class IdentityCertificate extends Identity<ServiceIdentityCertificate> {
     constructor(certificate: string = '', privateKey: string = '', passphrase?: string) {
-    super();
-    this.certificate = certificate;
-    this.privateKey = privateKey;
-    this.passphrase = passphrase;
+        super({ type: 'CC', certificate, privateKey, passphrase });
     }
 
-  static fromJson(data: ServiceIdentityCertificate): IdentityCertificate {
-    return new IdentityCertificate(
-      data.certificate,
-      data.privateKey,
-      data.passphrase
-    );
-  }
-
-  toJson(): ServiceIdentityCertificate {
-    return {
-      type: this.type,
-      certificate: this.certificate,
-      privateKey: this.privateKey,
-      ...(this.passphrase && { passphrase: this.passphrase })
-    };
-  }
+    static fromJson(data: ServiceIdentityCertificate): IdentityCertificate { return new IdentityCertificate().load(data); }
+    clone(): IdentityCertificate { return IdentityCertificate.fromJson(this.toJson()); }
+    get type(): 'CC' { return this._data.type; }
+    get certificate(): string { return this._data.certificate; }
+    set certificate(value: string) { this._data.certificate = value; }
+    get privateKey(): string { return this._data.privateKey; }
+    set privateKey(value: string) { this._data.privateKey = value; }
+    get passphrase(): string | undefined { return this._data.passphrase; }
+    set passphrase(value: string | undefined) { this._data.passphrase = value; }
 }

src/models/index.ts

@@ -1,6 +1,6 @@
 export { ProviderObject } from './provider';
 export { ServiceObject } from './service';
-export { CollectionObject } from './collection';
+export { CollectionObject, CollectionPropertiesObject } from './collection';
 export { EntityObject } from './entity';
 export { EventObject } from './event';
 export { TaskObject } from './task';
@@ -16,7 +16,6 @@ export {
 export {
   Location,
   LocationUri,
-  LocationSocketSole,
-  LocationSocketSplit,
   LocationFile
 } from './location';
+export { MutationProxy } from './mutation-proxy';

src/models/location.ts

@@ -1,50 +1,55 @@
 /**
- * Location implementation classes for Mail Manager services
+ * Location models for Chrono Manager services
  */
 
-import type {
-  ServiceLocation,
-  ServiceLocationUri,
-  ServiceLocationSocketSole,
-  ServiceLocationSocketSplit,
-  ServiceLocationFile
-} from '@/types/service';
+import type { ServiceLocation, ServiceLocationFile, ServiceLocationUri } from '@/types/service';
+import { clonePlain } from './clone-plain';
+import { MutationProxy } from './mutation-proxy';
 
-/**
- * Base Location class
- */
-export abstract class Location {
-  abstract toJson(): ServiceLocation;
+export abstract class Location<T extends ServiceLocation = ServiceLocation> {
+    protected _original: T;
+    protected _mutated: Partial<T>;
+    protected _mutationProxy: MutationProxy<T>;
+    protected _data: T;
+
+    protected constructor(initial: T) {
+        this._original = clonePlain(initial);
+        this._mutated = {};
+        this._mutationProxy = new MutationProxy<T>(() => this._original, () => this._mutated);
+        this._data = this._mutationProxy.create();
+    }
+
+    protected load(data: T): this {
+        this._original = clonePlain(data);
+        this._mutated = {};
+        this._data = this._mutationProxy.create();
+        return this;
+    }
+
+    toJson(): T;
+    toJson(delta: true): Partial<T>;
+    toJson(delta?: boolean): T | Partial<T> {
+        return delta
+            ? clonePlain(this._mutated)
+            : { ...clonePlain(this._original), ...clonePlain(this._mutated) };
+    }
+
+    abstract clone(): Location;
+
+    mutated(): boolean {
+        return Reflect.ownKeys(this._mutated).length > 0;
+    }
 
     static fromJson(data: ServiceLocation): Location {
         switch (data.type) {
-      case 'URI':
-        return LocationUri.fromJson(data);
-      case 'SOCKET_SOLE':
-        return LocationSocketSole.fromJson(data);
-      case 'SOCKET_SPLIT':
-        return LocationSocketSplit.fromJson(data);
-      case 'FILE':
-        return LocationFile.fromJson(data);
-      default:
-        throw new Error(`Unknown location type: ${(data as any).type}`);
+            case 'URI': return LocationUri.fromJson(data);
+            case 'FILE': return LocationFile.fromJson(data);
+            default: throw new Error(`Unknown location type: ${(data as any).type}`);
         }
     }
 }
 
-/**
- * URI-based service location for API and web services
- * Used by: JMAP, Gmail API, etc.
- */
-export class LocationUri extends Location {
-  readonly type = 'URI' as const;
-  scheme: string;
-  host: string;
-  port: number;
-  path?: string;
-  verifyPeer: boolean;
-  verifyHost: boolean;
-
+export class LocationUri extends Location<ServiceLocationUri> {
     constructor(
         scheme: string = 'https',
         host: string = '',
@@ -53,188 +58,34 @@ export class LocationUri extends Location {
         verifyPeer: boolean = true,
         verifyHost: boolean = true
     ) {
-    super();
-    this.scheme = scheme;
-    this.host = host;
-    this.port = port;
-    this.path = path;
-    this.verifyPeer = verifyPeer;
-    this.verifyHost = verifyHost;
+        super({ type: 'URI', scheme, host, port, ...(path !== undefined && { path }), verifyPeer, verifyHost });
     }
 
-  static fromJson(data: ServiceLocationUri): LocationUri {
-    return new LocationUri(
-      data.scheme,
-      data.host,
-      data.port,
-      data.path,
-      data.verifyPeer ?? true,
-      data.verifyHost ?? true
-    );
+    static fromJson(data: ServiceLocationUri): LocationUri { return new LocationUri().load(data); }
+    clone(): LocationUri { return LocationUri.fromJson(this.toJson()); }
+    getUrl(): string { return `${this.scheme}://${this.host}:${this.port}${this.path || ''}`; }
+
+    get type(): 'URI' { return this._data.type; }
+    get scheme(): string { return this._data.scheme; }
+    set scheme(value: string) { this._data.scheme = value; }
+    get host(): string { return this._data.host; }
+    set host(value: string) { this._data.host = value; }
+    get port(): number { return this._data.port; }
+    set port(value: number) { this._data.port = value; }
+    get path(): string | undefined { return this._data.path; }
+    set path(value: string | undefined) { this._data.path = value; }
+    get verifyPeer(): boolean { return this._data.verifyPeer ?? true; }
+    set verifyPeer(value: boolean) { this._data.verifyPeer = value; }
+    get verifyHost(): boolean { return this._data.verifyHost ?? true; }
+    set verifyHost(value: boolean) { this._data.verifyHost = value; }
 }
 
-  toJson(): ServiceLocationUri {
-    return {
-      type: this.type,
-      scheme: this.scheme,
-      host: this.host,
-      port: this.port,
-      ...(this.path && { path: this.path }),
-      ...(this.verifyPeer !== undefined && { verifyPeer: this.verifyPeer }),
-      ...(this.verifyHost !== undefined && { verifyHost: this.verifyHost })
-    };
-  }
+export class LocationFile extends Location<ServiceLocationFile> {
+    constructor(path: string = '') { super({ type: 'FILE', path }); }
+    static fromJson(data: ServiceLocationFile): LocationFile { return new LocationFile().load(data); }
+    clone(): LocationFile { return LocationFile.fromJson(this.toJson()); }
 
-  getUrl(): string {
-    const path = this.path || '';
-    return `${this.scheme}://${this.host}:${this.port}${path}`;
-  }
-}
-
-/**
- * Single socket-based service location
- * Used by: services using a single host/port combination
- */
-export class LocationSocketSole extends Location {
-  readonly type = 'SOCKET_SOLE' as const;
-  host: string;
-  port: number;
-  encryption: 'none' | 'ssl' | 'tls' | 'starttls';
-  verifyPeer: boolean;
-  verifyHost: boolean;
-
-  constructor(
-    host: string = '',
-    port: number = 993,
-    encryption: 'none' | 'ssl' | 'tls' | 'starttls' = 'ssl',
-    verifyPeer: boolean = true,
-    verifyHost: boolean = true
-  ) {
-    super();
-    this.host = host;
-    this.port = port;
-    this.encryption = encryption;
-    this.verifyPeer = verifyPeer;
-    this.verifyHost = verifyHost;
-  }
-
-  static fromJson(data: ServiceLocationSocketSole): LocationSocketSole {
-    return new LocationSocketSole(
-      data.host,
-      data.port,
-      data.encryption,
-      data.verifyPeer ?? true,
-      data.verifyHost ?? true
-    );
-  }
-
-  toJson(): ServiceLocationSocketSole {
-    return {
-      type: this.type,
-      host: this.host,
-      port: this.port,
-      encryption: this.encryption,
-      ...(this.verifyPeer !== undefined && { verifyPeer: this.verifyPeer }),
-      ...(this.verifyHost !== undefined && { verifyHost: this.verifyHost })
-    };
-  }
-}
-
-/**
- * Split socket-based service location
- * Used by: traditional IMAP/SMTP configurations
- */
-export class LocationSocketSplit extends Location {
-  readonly type = 'SOCKET_SPLIT' as const;
-  inboundHost: string;
-  inboundPort: number;
-  inboundEncryption: 'none' | 'ssl' | 'tls' | 'starttls';
-  outboundHost: string;
-  outboundPort: number;
-  outboundEncryption: 'none' | 'ssl' | 'tls' | 'starttls';
-  inboundVerifyPeer: boolean;
-  inboundVerifyHost: boolean;
-  outboundVerifyPeer: boolean;
-  outboundVerifyHost: boolean;
-
-  constructor(
-    inboundHost: string = '',
-    inboundPort: number = 993,
-    inboundEncryption: 'none' | 'ssl' | 'tls' | 'starttls' = 'ssl',
-    outboundHost: string = '',
-    outboundPort: number = 465,
-    outboundEncryption: 'none' | 'ssl' | 'tls' | 'starttls' = 'ssl',
-    inboundVerifyPeer: boolean = true,
-    inboundVerifyHost: boolean = true,
-    outboundVerifyPeer: boolean = true,
-    outboundVerifyHost: boolean = true
-  ) {
-    super();
-    this.inboundHost = inboundHost;
-    this.inboundPort = inboundPort;
-    this.inboundEncryption = inboundEncryption;
-    this.outboundHost = outboundHost;
-    this.outboundPort = outboundPort;
-    this.outboundEncryption = outboundEncryption;
-    this.inboundVerifyPeer = inboundVerifyPeer;
-    this.inboundVerifyHost = inboundVerifyHost;
-    this.outboundVerifyPeer = outboundVerifyPeer;
-    this.outboundVerifyHost = outboundVerifyHost;
-  }
-
-  static fromJson(data: ServiceLocationSocketSplit): LocationSocketSplit {
-    return new LocationSocketSplit(
-      data.inboundHost,
-      data.inboundPort,
-      data.inboundEncryption,
-      data.outboundHost,
-      data.outboundPort,
-      data.outboundEncryption,
-      data.inboundVerifyPeer ?? true,
-      data.inboundVerifyHost ?? true,
-      data.outboundVerifyPeer ?? true,
-      data.outboundVerifyHost ?? true
-    );
-  }
-
-  toJson(): ServiceLocationSocketSplit {
-    return {
-      type: this.type,
-      inboundHost: this.inboundHost,
-      inboundPort: this.inboundPort,
-      inboundEncryption: this.inboundEncryption,
-      outboundHost: this.outboundHost,
-      outboundPort: this.outboundPort,
-      outboundEncryption: this.outboundEncryption,
-      ...(this.inboundVerifyPeer !== undefined && { inboundVerifyPeer: this.inboundVerifyPeer }),
-      ...(this.inboundVerifyHost !== undefined && { inboundVerifyHost: this.inboundVerifyHost }),
-      ...(this.outboundVerifyPeer !== undefined && { outboundVerifyPeer: this.outboundVerifyPeer }),
-      ...(this.outboundVerifyHost !== undefined && { outboundVerifyHost: this.outboundVerifyHost })
-    };
-  }
-}
-
-/**
- * File-based service location
- * Used by: local file system providers
- */
-export class LocationFile extends Location {
-  readonly type = 'FILE' as const;
-  path: string;
-
-  constructor(path: string = '') {
-    super();
-    this.path = path;
-  }
-
-  static fromJson(data: ServiceLocationFile): LocationFile {
-    return new LocationFile(data.path);
-  }
-
-  toJson(): ServiceLocationFile {
-    return {
-      type: this.type,
-      path: this.path
-    };
-  }
+    get type(): 'FILE' { return this._data.type; }
+    get path(): string { return this._data.path; }
+    set path(value: string) { this._data.path = value; }
 }

src/models/mutation-proxy.ts

@@ -0,0 +1,36 @@
+import { clonePlain } from './clone-plain';
+
+export class MutationProxy<T extends object> {
+    constructor(
+        private readonly getOriginal: () => T,
+        private readonly getMutated: () => Partial<T>,
+    ) {}
+
+    create(): T {
+        return new Proxy({} as T, {
+            get: (_target, prop: string | symbol) => {
+                if (typeof prop !== 'string') return undefined;
+
+                const key = prop as keyof T;
+                const mutated = this.getMutated();
+                return key in mutated ? mutated[key] : this.getOriginal()[key];
+            },
+            set: (_target, prop: string | symbol, value: unknown) => {
+                if (typeof prop === 'string') {
+                    const key = prop as keyof T;
+                    (this.getMutated() as Record<keyof T, unknown>)[key] = clonePlain(value);
+                }
+                return true;
+            },
+            has: (_target, prop: string | symbol) => {
+                if (typeof prop !== 'string') return false;
+                return prop in this.getMutated() || prop in this.getOriginal();
+            },
+            ownKeys: () => Array.from(new Set([
+                ...Reflect.ownKeys(this.getOriginal()),
+                ...Reflect.ownKeys(this.getMutated()),
+            ])),
+            getOwnPropertyDescriptor: () => ({ enumerable: true, configurable: true }),
+        });
+    }
+}

src/models/provider.ts

@@ -4,10 +4,12 @@
 
 import type { 
     ProviderInterface,
-    ProviderCapabilitiesInterface
+    ProviderCapabilitiesInterface,
+    ProviderModelInterface
 } from "@/types/provider";
+import { clonePlain } from './clone-plain';
 
-export class ProviderObject implements ProviderInterface {
+export class ProviderObject implements ProviderModelInterface {
 
     _data!: ProviderInterface;
 
@@ -21,12 +23,16 @@ export class ProviderObject implements ProviderInterface {
     }
 
     fromJson(data: ProviderInterface): ProviderObject {
-        this._data = data;
+        this._data = clonePlain(data);
         return this;
     }
 
     toJson(): ProviderInterface {
-        return this._data;
+        return clonePlain(this._data);
+    }
+
+    clone(): ProviderObject {
+        return new ProviderObject().fromJson(this.toJson());
     }
 
     capable(capability: keyof ProviderCapabilitiesInterface): boolean {
@@ -43,10 +49,6 @@ export class ProviderObject implements ProviderInterface {
 
     /** Immutable Properties */
 
-    get '@type'(): string {
-        return this._data['@type'];
-    }
-
     get identifier(): string {
         return this._data.identifier;
     }
@@ -56,7 +58,7 @@ export class ProviderObject implements ProviderInterface {
     }
 
     get capabilities(): ProviderCapabilitiesInterface {
-        return this._data.capabilities;
+        return clonePlain(this._data.capabilities);
     }
 
 }

src/models/service.ts

@@ -5,18 +5,26 @@
 import type {
     ServiceInterface,
     ServiceCapabilitiesInterface,
-    ServiceIdentity,
-    ServiceLocation
+    ServiceLocation,
+    ServiceModelInterface
 } from "@/types/service";
 import { Identity } from './identity';
 import { Location } from './location';
+import { MutationProxy } from './mutation-proxy';
+import { clonePlain } from './clone-plain';
 
-export class ServiceObject implements ServiceInterface {
-
+export class ServiceObject implements ServiceModelInterface {
+    private _original: ServiceInterface;
+    private _mutated: Partial<ServiceInterface>;
+    private _mutationProxy = new MutationProxy<ServiceInterface>(() => this._original, () => this._mutated);
     _data!: ServiceInterface;
+    private _location: Location | null | undefined = undefined;
+    private _identity: Identity | null | undefined = undefined;
+    private _locationAssigned = false;
+    private _identityAssigned = false;
 
     constructor() {
-        this._data = {
+        this._original = {
             '@type': 'chrono:service',
             provider: '',
             identifier: null,
@@ -24,15 +32,59 @@ export class ServiceObject implements ServiceInterface {
             enabled: false,
             capabilities: {}
         };
+        this._mutated = {};
+        this._data = this._mutationProxy.create();
     }
 
     fromJson(data: ServiceInterface): ServiceObject {
-        this._data = data;
+        this._original = clonePlain(data);
+        this._mutated = {};
+        this._data = this._mutationProxy.create();
+        this._location = undefined;
+        this._identity = undefined;
+        this._locationAssigned = false;
+        this._identityAssigned = false;
         return this;
     }
 
-    toJson(): ServiceInterface {
-        return this._data;
+    toJson(): ServiceInterface;
+    toJson(delta: true): Partial<ServiceInterface>;
+    toJson(delta?: boolean): ServiceInterface | Partial<ServiceInterface> {
+        if (delta) {
+            const json = clonePlain(this._mutated);
+            if (this._locationAssigned) {
+                json.location = this._location ? this._location.toJson() : null;
+            } else if (this._location?.mutated()) {
+                json.location = this._location.toJson(true) as ServiceInterface['location'];
+            }
+
+            if (this._identityAssigned) {
+                json.identity = this._identity ? this._identity.toJson() : null;
+            } else if (this._identity?.mutated()) {
+                json.identity = this._identity.toJson(true) as ServiceInterface['identity'];
+            }
+            return json;
+        }
+
+        const json: ServiceInterface = {
+            ...clonePlain(this._original),
+            ...clonePlain(this._mutated),
+        };
+        if (this._location !== undefined) json.location = this._location ? this._location.toJson() : null;
+        if (this._identity !== undefined) json.identity = this._identity ? this._identity.toJson() : null;
+        return json;
+    }
+
+    clone(): ServiceObject {
+        return new ServiceObject().fromJson(this.toJson());
+    }
+
+    mutated(): boolean {
+        return Reflect.ownKeys(this._mutated).length > 0
+            || this._locationAssigned
+            || this._identityAssigned
+            || (this._location?.mutated() ?? false)
+            || (this._identity?.mutated() ?? false);
     }
 
     capable(capability: keyof ServiceCapabilitiesInterface): boolean {
@@ -41,88 +93,41 @@ export class ServiceObject implements ServiceInterface {
     }
 
     capability(capability: keyof ServiceCapabilitiesInterface): any | null {
-        if (this._data.capabilities) {
-            return this._data.capabilities[capability];
-        }
-        return null;
+        return this._data.capabilities?.[capability] ?? null;
     }
 
-    /** Immutable Properties */
+    get provider(): string { return this._data.provider; }
+    get identifier(): string | number | null { return this._data.identifier; }
+    get capabilities(): ServiceCapabilitiesInterface { return this._data.capabilities ?? {}; }
 
-    get '@type'(): string {
-        return this._data['@type'];
+    get label(): string | null { return this._data.label; }
+    set label(value: string | null) { this._data.label = value; }
+
+    get enabled(): boolean { return this._data.enabled; }
+    set enabled(value: boolean) { this._data.enabled = value; }
+
+    get location(): Location | null {
+        if (this._location !== undefined) return this._location;
+        this._location = this._data.location ? Location.fromJson(this._data.location as ServiceLocation) : null;
+        return this._location;
     }
 
-    get provider(): string {
-        return this._data.provider;
+    set location(value: Location | null) {
+        this._location = value;
+        this._locationAssigned = true;
     }
 
-    get identifier(): string | number | null {
-        return this._data.identifier;
+    get identity(): Identity | null {
+        if (this._identity !== undefined) return this._identity;
+        this._identity = this._data.identity ? Identity.fromJson(this._data.identity) : null;
+        return this._identity;
     }
 
-    get capabilities(): ServiceCapabilitiesInterface | undefined {
-        return this._data.capabilities;
-    }
-
-    /** Mutable Properties */
-
-    get label(): string | null {
-        return this._data.label;
-    }
-
-    set label(value: string | null) {
-        this._data.label = value;
-    }
-
-    get enabled(): boolean {
-        return this._data.enabled;
-    }
-
-    set enabled(value: boolean) {
-        this._data.enabled = value;
-    }
-
-    get location(): ServiceLocation | null {
-        return this._data.location ?? null;
-    }
-
-    set location(value: ServiceLocation | null) {
-        this._data.location = value;
-    }
-
-    get identity(): ServiceIdentity | null {
-        return this._data.identity ?? null;
-    }
-
-    set identity(value: ServiceIdentity | null) {
-        this._data.identity = value;
-    }
-
-    get auxiliary(): Record<string, any> {
-        return this._data.auxiliary ?? {};
-    }
-    
-    set auxiliary(value: Record<string, any>) {
-        this._data.auxiliary = value;
-    }
-
-    /** Helper Methods */
-
-    /**
-     * Get identity as a class instance for easier manipulation
-     */
-    getIdentity(): Identity | null {
-        if (!this._data.identity) return null;
-        return Identity.fromJson(this._data.identity);
-    }
-
-    /**
-     * Get location as a class instance for easier manipulation
-     */
-    getLocation(): Location | null {
-        if (!this._data.location) return null;
-        return Location.fromJson(this._data.location);
+    set identity(value: Identity | null) {
+        this._identity = value;
+        this._identityAssigned = true;
     }
 
+    get auxiliary(): Record<string, any> { return this._data.auxiliary ?? {}; }
+    set auxiliary(value: Record<string, any>) { this._data.auxiliary = value; }
 }

src/services/collectionService.ts

@@ -70,9 +70,15 @@ export const collectionService = {
    * 
    * @returns Promise with collection object
    */
-  async fetch(request: CollectionFetchRequest): Promise<CollectionObject> {
+  async fetch(request: CollectionFetchRequest): Promise<Record<string, CollectionObject>> {
     const response = await transceivePost<CollectionFetchRequest, CollectionFetchResponse>('collection.fetch', request);
-    return createCollectionObject(response);
+
+    const list: Record<string, CollectionObject> = {};
+    Object.entries(response).forEach(([, collection]) => {
+      list[collection.identifier] = createCollectionObject(collection);
+    });
+
+    return list;
   },
 
   /**
@@ -123,8 +129,14 @@ export const collectionService = {
    * 
    * @returns Promise with deletion result
    */
-  async delete(request: CollectionDeleteRequest): Promise<CollectionDeleteResponse> {
-    return await transceivePost<CollectionDeleteRequest, CollectionDeleteResponse>('collection.delete', request);
+  async delete(request: CollectionDeleteRequest): Promise<boolean | CollectionObject> {
+    const response = await transceivePost<CollectionDeleteRequest, CollectionDeleteResponse>('collection.delete', request);
+
+    if (response.disposition === 'moved' && response.mutation) {
+      return createCollectionObject(response.mutation);
+    }
+
+    return true;
   },
 };
 

src/services/entityService.ts

@@ -2,10 +2,12 @@
  * Entity management service
  */
 
-import { transceivePost } from './transceive';
+import { transceivePost, transceiveStream } from './transceive';
 import type {
-  EntityListRequest,
-  EntityListResponse,
+  EntityListBulkRequest,
+  EntityListBulkResponse,
+  EntityListStreamRequest,
+  EntityListStreamResponse,
   EntityFetchRequest,
   EntityFetchResponse,
   EntityExtantRequest,
@@ -18,6 +20,10 @@ import type {
   EntityDeleteResponse,
   EntityDeltaRequest,
   EntityDeltaResponse,
+  EntityMoveRequest,
+  EntityMoveResponse,
+  EntityImportRequest,
+  EntityImportResponse,
   EntityInterface,
 } from '../types/entity';
 import { useIntegrationStore } from '@KTXC/stores/integrationStore';
@@ -39,16 +45,11 @@ function createEntityObject(data: EntityInterface): EntityObject {
 export const entityService = {
 
   /**
-   * Retrieve list of entities, optionally filtered by source selector
-   * 
-   * @param request - list request parameters
-   * 
-   * @returns Promise with entity object list grouped by provider, service, collection, and entity identifier
+   * Retrieve list of entities, optionally filtered by source collection identifiers
    */
-  async list(request: EntityListRequest = {}): Promise<Record<string, Record<string, Record<string, Record<string, EntityObject>>>>> {
-    const response = await transceivePost<EntityListRequest, EntityListResponse>('entity.list', request);
+  async listBulk(request: EntityListBulkRequest = {}): Promise<Record<string, Record<string, Record<string, Record<string, EntityObject>>>>> {
+    const response = await transceivePost<EntityListBulkRequest, EntityListBulkResponse>('entity.listBulk', request);
 
-    // Convert nested response to EntityObject instances
     const providerList: Record<string, Record<string, Record<string, Record<string, EntityObject>>>> = {};
     Object.entries(response).forEach(([providerId, providerServices]) => {
       const serviceList: Record<string, Record<string, Record<string, EntityObject>>> = {};
@@ -70,30 +71,34 @@ export const entityService = {
   },
 
   /**
-   * Retrieve a specific entity by provider and identifier
-   * 
-   * @param request - fetch request parameters
-   * 
-   * @returns Promise with entity objects keyed by identifier
+   * Stream entities as NDJSON, invoking onEntity for each entity as it arrives.
+   */
+  async listStream(request: EntityListStreamRequest, onEntity: (entity: EntityObject) => void): Promise<{ total: number }> {
+    return await transceiveStream<EntityListStreamRequest, EntityListStreamResponse>(
+      'entity.listStream',
+      request,
+      (entity) => {
+        onEntity(createEntityObject(entity));
+      }
+    );
+  },
+
+  /**
+   * Retrieve specific entities by their identifiers
    */
   async fetch(request: EntityFetchRequest): Promise<Record<string, EntityObject>> {
     const response = await transceivePost<EntityFetchRequest, EntityFetchResponse>('entity.fetch', request);
 
-    // Convert response to EntityObject instances
     const list: Record<string, EntityObject> = {};
-    Object.entries(response).forEach(([identifier, entityData]) => {
-      list[identifier] = createEntityObject(entityData);
+    Object.entries(response).forEach(([, entity]) => {
+      list[entity.identifier] = createEntityObject(entity);
     });
 
     return list;
   },
 
   /**
-   * Retrieve entity availability status for a given source selector
-   * 
-   * @param request - extant request parameters
-   * 
-   * @returns Promise with entity availability status
+   * Retrieve entity availability status for a given set of entity identifiers
    */
   async extant(request: EntityExtantRequest): Promise<EntityExtantResponse> {
     return await transceivePost<EntityExtantRequest, EntityExtantResponse>('entity.extant', request);
@@ -101,10 +106,6 @@ export const entityService = {
 
   /**
    * Create a new entity
-   * 
-   * @param request - create request parameters
-   * 
-   * @returns Promise with created entity object
    */
   async create(request: EntityCreateRequest): Promise<EntityObject> {
     const response = await transceivePost<EntityCreateRequest, EntityCreateResponse>('entity.create', request);
@@ -113,10 +114,6 @@ export const entityService = {
 
   /**
    * Update an existing entity
-   * 
-   * @param request - update request parameters
-   * 
-   * @returns Promise with updated entity object
    */
   async update(request: EntityUpdateRequest): Promise<EntityObject> {
     const response = await transceivePost<EntityUpdateRequest, EntityUpdateResponse>('entity.update', request);
@@ -124,11 +121,7 @@ export const entityService = {
   },
 
   /**
-   * Delete an entity
-   * 
-   * @param request - delete request parameters
-   * 
-   * @returns Promise with deletion result
+   * Delete entities by their identifiers
    */
   async delete(request: EntityDeleteRequest): Promise<EntityDeleteResponse> {
     return await transceivePost<EntityDeleteRequest, EntityDeleteResponse>('entity.delete', request);
@@ -136,15 +129,40 @@ export const entityService = {
 
   /**
    * Retrieve delta changes for entities
-   * 
-   * @param request - delta request parameters
-   * 
-   * @returns Promise with delta changes (created, modified, deleted)
    */
   async delta(request: EntityDeltaRequest): Promise<EntityDeltaResponse> {
     return await transceivePost<EntityDeltaRequest, EntityDeltaResponse>('entity.delta', request);
   },
 
+  /**
+   * Move entities to a target collection
+   */
+  async move(request: EntityMoveRequest): Promise<EntityMoveResponse> {
+    return await transceivePost<EntityMoveRequest, EntityMoveResponse>('entity.move', request);
+  },
+
+    /**
+   * Import vCards into a collection, streaming progress as it arrives.
+   *
+   * @param request      - import request (target collection, raw data, options)
+   * @param onObject     - called synchronously for each per-contact result frame
+   * @param onDiscovered - called once with the discovered total (progress denominator)
+   *
+   * @returns Promise resolving to { total } (objects processed) when the stream completes
+   */
+  async import(
+    request: EntityImportRequest,
+    onObject: (object: EntityImportResponse) => void,
+    onDiscovered: (expected: number) => void,
+  ): Promise<{ total: number }> {
+    return await transceiveStream<EntityImportRequest, EntityImportResponse>(
+      'entity.import',
+      request,
+      onObject,
+      { onStart: (expected) => { if (expected !== undefined) onDiscovered(expected); } },
+    );
+  },
+
 };
 
 export default entityService;

src/services/transceive.ts

@@ -4,7 +4,7 @@
  */
 
 import { createFetchWrapper } from '@KTXC';
-import type { ApiRequest, ApiResponse } from '../types/common';
+import type { ApiRequest, ApiResponse, ApiStreamResponse } from '../types/common';
 
 const fetchWrapper = createFetchWrapper();
 const API_URL = '/m/chrono_manager/v1';
@@ -48,3 +48,82 @@ export async function transceivePost<TRequest, TResponse>(
   
   return response.data;
 }
+
+/**
+ * Stream an NDJSON API response, unwrapping data frames for the caller.
+ *
+ * @param operation - Operation name, e.g. 'entity.listStream'
+ * @param data      - Operation-specific request data
+ * @param onData    - Synchronous callback invoked for every unwrapped data payload.
+ * @param options   - Optional `user` override and an `onStart` hook.
+ * @returns Promise resolving to the final stream total from the control/end frame
+ */
+export async function transceiveStream<TRequest, TData>(
+  operation: string,
+  data: TRequest,
+  onData: (data: TData) => void,
+  options?: { user?: string; onStart?: (expected?: number) => void }
+): Promise<{ total: number }> {
+  const request: ApiRequest<TRequest> = {
+    version: API_VERSION,
+    transaction: generateTransactionId(),
+    operation,
+    data,
+    user: options?.user,
+  };
+
+  let total = 0;
+
+  const dispatch = (line: string): void => {
+    const message = JSON.parse(line) as ApiStreamResponse<TData>;
+
+    if (message.type === 'control') {
+      if (message.status === 'start') {
+        options?.onStart?.(message.total);
+      } else if (message.status === 'end') {
+        total = message.total;
+      }
+      return;
+    }
+
+    if (message.type === 'error') {
+      throw new Error(`[${operation}] ${message.message}`);
+    }
+
+    onData(message.data);
+  };
+
+  await fetchWrapper.post(API_URL, request, {
+    headers: { 'Accept': 'application/json' },
+    onStream: async (response: Response) => {
+      if (!response.body) {
+        throw new Error(`[${operation}] Response body is not readable`);
+      }
+
+      const reader = response.body.getReader();
+      const decoder = new TextDecoder();
+      let buffer = '';
+
+      try {
+        while (true) {
+          const { done, value } = await reader.read();
+          if (done) break;
+
+          buffer += decoder.decode(value, { stream: true });
+          const lines = buffer.split('\n');
+          buffer = lines.pop()!;
+
+          for (const line of lines) {
+            if (line.trim()) dispatch(line);
+          }
+        }
+
+        if (buffer.trim()) dispatch(buffer);
+      } finally {
+        reader.releaseLock();
+      }
+    },
+  });
+
+  return { total };
+}

src/stores/collectionsStore.ts

@@ -4,9 +4,14 @@
 
 import { ref, computed, readonly } from 'vue'
 import { defineStore } from 'pinia'
+import {
+  type ServiceIdentifier,
+  type CollectionIdentifier,
+  type ListFilter,
+  type ListSort,
+} from '../types'
 import { collectionService } from '../services'
 import { CollectionObject, CollectionPropertiesObject } from '../models/collection'
-import type { SourceSelector, ListFilter, ListSort } from '../types'
 
 export const useCollectionsStore = defineStore('chronoCollectionsStore', () => {
   // State
@@ -36,10 +41,8 @@ export const useCollectionsStore = defineStore('chronoCollectionsStore', () => {
 
     Object.values(_collections.value).forEach((collection) => {
       const serviceKey = `${collection.provider}:${collection.service}`
-      if (!groups[serviceKey]) {
-        groups[serviceKey] = []
-      }
-      groups[serviceKey].push(collection)
+      const serviceCollections = (groups[serviceKey] ??= [])
+      serviceCollections.push(collection)
     })
 
     return groups
@@ -47,87 +50,49 @@ export const useCollectionsStore = defineStore('chronoCollectionsStore', () => {
 
   /**
    * Get a specific collection from store, with optional retrieval
-   * 
-   * @param provider - provider identifier
-   * @param service - service identifier
-   * @param identifier - collection identifier
-   * @param retrieve - Retrieve behavior: true = fetch if missing or refresh, false = cache only
-   * 
-   * @returns Collection object or null
    */
-  function collection(provider: string, service: string | number, identifier: string | number, retrieve: boolean = false): CollectionObject | null {
-    const key = identifierKey(provider, service, identifier)
-    if (retrieve === true && !_collections.value[key]) {
-      console.debug(`[Chrono Manager][Store] - Force fetching collection "${key}"`)
-      fetch(provider, service, identifier)
+  function collection(target: CollectionIdentifier, retrieve: boolean = false): CollectionObject | null {
+    if (retrieve === true && !_collections.value[target]) {
+      console.debug(`[Chrono Manager][Store] - Force fetching collection "${target}"`)
+      fetch([target])
     }
 
-    return _collections.value[key] || null
+    return _collections.value[target] || null
   }
 
   /**
    * Get all collections for a specific service
-   * 
-   * @param provider - provider identifier
-   * @param service - service identifier
-   * @param retrieve - Retrieve behavior: true = fetch if missing or refresh, false = cache only
-   * 
-   * @returns Array of collection objects
    */
   function collectionsForService(provider: string, service: string | number, retrieve: boolean = false): CollectionObject[] {
-    const serviceKeyPrefix = `${provider}:${service}:`
-    const serviceCollections = Object.entries(_collections.value)
-      .filter(([key]) => key.startsWith(serviceKeyPrefix))
-      .map(([_, collection]) => collection)
+    const serviceIdentifier = `${provider}:${service}` as ServiceIdentifier
+    const serviceCollections = Object.values(_collections.value)
+      .filter(collection => `${collection.provider}:${collection.service}` === serviceIdentifier)
 
     if (retrieve === true && serviceCollections.length === 0) {
-      console.debug(`[Chrono Manager][Store] - Force fetching collections for service "${provider}:${service}"`)
-      const sources: SourceSelector = {
-        [provider]: {
-          [String(service)]: true
-        }
-      }
-      list(sources)
+      console.debug(`[Chrono Manager][Store] - Force fetching collections for service "${serviceIdentifier}"`)
+      list([serviceIdentifier])
     }
 
     return serviceCollections
   }
 
   /**
-   * Create unique key for a collection
+   * Retrieve all or specific collections, optionally filtered by service/collection identifiers
    */
-  function identifierKey(provider: string, service: string | number | null, identifier: string | number | null): string {
-    return `${provider}:${service ?? ''}:${identifier ?? ''}`
-  }
-
-  // Actions
-  
-  /**
-   * Retrieve all or specific collections, optionally filtered by source selector
-   * 
-   * @param sources - optional source selector
-   * @param filter - optional list filter
-   * @param sort - optional list sort
-   * 
-   * @returns Promise with collection object list keyed by provider, service, and collection identifier
-   */
-  async function list(sources?: SourceSelector, filter?: ListFilter, sort?: ListSort): Promise<Record<string, CollectionObject>> {
+  async function list(sources?: ServiceIdentifier[] | CollectionIdentifier[], filter?: ListFilter, sort?: ListSort): Promise<Record<string, CollectionObject>> {
     transceiving.value = true
     try {
       const response = await collectionService.list({ sources, filter, sort })
 
-      // Flatten nested structure: provider:service:collection -> "provider:service:collection": object
       const collections: Record<string, CollectionObject> = {}
       Object.entries(response).forEach(([_providerId, providerServices]) => {
         Object.entries(providerServices).forEach(([_serviceId, serviceCollections]) => {
           Object.entries(serviceCollections).forEach(([_collectionId, collectionObj]) => {
-            const key = identifierKey(collectionObj.provider, collectionObj.service, collectionObj.identifier)
-            collections[key] = collectionObj
+            collections[collectionObj.identifier] = collectionObj
           })
         })
       })
 
-      // Merge retrieved collections into state
       _collections.value = { ..._collections.value, ...collections }
 
       console.debug('[Chrono Manager][Store] - Successfully retrieved', Object.keys(collections).length, 'collections')
@@ -141,27 +106,21 @@ export const useCollectionsStore = defineStore('chronoCollectionsStore', () => {
   }
 
   /**
-   * Retrieve a specific collection by provider, service, and identifier
-   * 
-   * @param provider - provider identifier
-   * @param service - service identifier
-   * @param identifier - collection identifier
-   * 
-   * @returns Promise with collection object
+   * Retrieve specific collections by their identifiers
    */
-  async function fetch(provider: string, service: string | number, identifier: string | number): Promise<CollectionObject> {
+  async function fetch(targets: CollectionIdentifier[]): Promise<Record<string, CollectionObject>> {
     transceiving.value = true
     try {
-      const response = await collectionService.fetch({ provider, service, collection: identifier })
+      const response = await collectionService.fetch({ targets })
 
-      // Merge fetched collection into state
-      const key = identifierKey(response.provider, response.service, response.identifier)
-      _collections.value[key] = response
+      Object.values(response).forEach(collectionObj => {
+        _collections.value[collectionObj.identifier] = collectionObj
+      })
 
-      console.debug('[Chrono Manager][Store] - Successfully fetched collection:', key)
+      console.debug('[Chrono Manager][Store] - Successfully fetched collections:', Object.keys(response).join(', '))
       return response
     } catch (error: any) {
-      console.error('[Chrono Manager][Store] - Failed to fetch collection:', error)
+      console.error('[Chrono Manager][Store] - Failed to fetch collections:', error)
       throw error
     } finally {
       transceiving.value = false
@@ -169,18 +128,14 @@ export const useCollectionsStore = defineStore('chronoCollectionsStore', () => {
   }
 
   /**
-   * Retrieve collection availability status for a given source selector
-   * 
-   * @param sources - source selector to check availability for
-   * 
-   * @returns Promise with collection availability status
+   * Retrieve collection availability status for the given collection identifiers
    */
-  async function extant(sources: SourceSelector) {
+  async function extant(targets: CollectionIdentifier[]): Promise<Record<string, Record<string, Record<string, boolean>>>> {
     transceiving.value = true
     try {
-      const response = await collectionService.extant({ sources })
+      const response = await collectionService.extant({ targets })
 
-      console.debug('[Chrono Manager][Store] - Successfully checked', sources ? Object.keys(sources).length : 0, 'collections')
+      console.debug('[Chrono Manager][Store] - Successfully checked', targets ? targets.length : 0, 'collections')
       return response
     } catch (error: any) {
       console.error('[Chrono Manager][Store] - Failed to check collections:', error)
@@ -191,30 +146,20 @@ export const useCollectionsStore = defineStore('chronoCollectionsStore', () => {
   }
 
   /**
-   * Create a new collection with given provider, service, and data
-   * 
-   * @param provider - provider identifier for the new collection
-   * @param service - service identifier for the new collection
-   * @param collection - optional parent collection identifier
-   * @param data - collection properties for creation
-   * 
-   * @returns Promise with created collection object
+   * Create a new collection with given provider, service, and properties
    */
-  async function create(provider: string, service: string | number, collection: string | number | null, data: CollectionPropertiesObject): Promise<CollectionObject> {
+  async function create(provider: string, service: string | number, properties: CollectionPropertiesObject): Promise<CollectionObject> {
     transceiving.value = true
     try {
       const response = await collectionService.create({
         provider,
         service,
-        collection, 
-        properties: data
+        properties: properties.toJson(),
       })
 
-      // Merge created collection into state
-      const key = identifierKey(response.provider, response.service, response.identifier)
-      _collections.value[key] = response
+      _collections.value[response.identifier] = response
 
-      console.debug('[Chrono Manager][Store] - Successfully created collection:', key)
+      console.debug('[Chrono Manager][Store] - Successfully created collection:', response.identifier)
       return response
     } catch (error: any) {
       console.error('[Chrono Manager][Store] - Failed to create collection:', error)
@@ -225,30 +170,19 @@ export const useCollectionsStore = defineStore('chronoCollectionsStore', () => {
   }
 
   /**
-   * Update an existing collection with given provider, service, identifier, and data
-   * 
-   * @param provider - provider identifier for the collection to update
-   * @param service - service identifier for the collection to update
-   * @param identifier - collection identifier for the collection to update
-   * @param data - collection properties for update
-   * 
-   * @returns Promise with updated collection object
+   * Update an existing collection with given target and properties
    */
-  async function update(provider: string, service: string | number, identifier: string | number, data: CollectionPropertiesObject): Promise<CollectionObject> {
+  async function update(target: CollectionIdentifier, properties: CollectionPropertiesObject): Promise<CollectionObject> {
     transceiving.value = true
     try {
       const response = await collectionService.update({
-        provider, 
-        service, 
-        identifier, 
-        properties: data
+        target,
+        properties: properties.toJson(),
       })
 
-      // Merge updated collection into state
-      const key = identifierKey(response.provider, response.service, response.identifier)
-      _collections.value[key] = response
+      _collections.value[response.identifier] = response
 
-      console.debug('[Chrono Manager][Store] - Successfully updated collection:', key)
+      console.debug('[Chrono Manager][Store] - Successfully updated collection:', response.identifier)
       return response
     } catch (error: any) {
       console.error('[Chrono Manager][Store] - Failed to update collection:', error)
@@ -259,24 +193,28 @@ export const useCollectionsStore = defineStore('chronoCollectionsStore', () => {
   }
 
   /**
-   * Delete a collection by provider, service, and identifier
-   * 
-   * @param provider - provider identifier for the collection to delete
-   * @param service - service identifier for the collection to delete
-   * @param identifier - collection identifier for the collection to delete
-   * 
-   * @returns Promise with deletion result
+   * Delete a collection by identifier.
    */
-  async function remove(provider: string, service: string | number, identifier: string | number): Promise<any> {
+  async function remove(target: CollectionIdentifier, force?: boolean): Promise<CollectionObject | boolean> {
     transceiving.value = true
     try {
-      await collectionService.delete({ provider, service, identifier })
+      const response = await collectionService.delete({ target, options: { force } })
 
-      // Remove deleted collection from state
-      const key = identifierKey(provider, service, identifier)
-      delete _collections.value[key]
+      if (response !== true && !(response instanceof CollectionObject)) {
+        console.warn('[Chrono Manager][Store] - Delete failed. Received unexpected response from delete operation:', response)
+        return false
+      }
 
-      console.debug('[Chrono Manager][Store] - Successfully deleted collection:', key)
+      delete _collections.value[target]
+
+      if (response instanceof CollectionObject) {
+        _collections.value[response.identifier] = response
+        console.debug('[Chrono Manager][Store] - Successfully moved collection', target, '->', response.identifier)
+        return response
+      }
+
+      console.debug('[Chrono Manager][Store] - Successfully deleted collection:', target)
+      return response
     } catch (error: any) {
       console.error('[Chrono Manager][Store] - Failed to delete collection:', error)
       throw error
@@ -285,17 +223,13 @@ export const useCollectionsStore = defineStore('chronoCollectionsStore', () => {
     }
   }
 
-  // Return public API
   return {
-    // State (readonly)
     transceiving: readonly(transceiving),
-    // Getters
     count,
     has,
     collections,
     collectionsByService,
     collectionsForService,
-    // Actions
     collection,
     list,
     fetch,

src/stores/entitiesStore.ts

@@ -6,7 +6,14 @@ import { ref, computed, readonly } from 'vue'
 import { defineStore } from 'pinia'
 import { entityService } from '../services'
 import { EntityObject } from '../models'
-import type { SourceSelector, ListFilter, ListSort, ListRange } from '../types/common'
+import type {
+  CollectionIdentifier,
+  EntityIdentifier,
+  ListFilter,
+  ListRange,
+  ListSort,
+} from '../types/common'
+import type { EntityPropertiesInterface } from '@/types/entity'
 
 export const useEntitiesStore = defineStore('chronoEntitiesStore', () => {
   // State
@@ -30,95 +37,44 @@ export const useEntitiesStore = defineStore('chronoEntitiesStore', () => {
 
   /**
    * Get a specific entity from store, with optional retrieval
-   * 
-   * @param provider - provider identifier
-   * @param service - service identifier
-   * @param collection - collection identifier
-   * @param identifier - entity identifier
-   * @param retrieve - Retrieve behavior: true = fetch if missing or refresh, false = cache only
-   * 
-   * @returns Entity object or null
    */
-  function entity(provider: string, service: string | number, collection: string | number, identifier: string | number, retrieve: boolean = false): EntityObject | null {
-    const key = identifierKey(provider, service, collection, identifier)
-    if (retrieve === true && !_entities.value[key]) {
-      console.debug(`[Chrono Manager][Store] - Force fetching entity "${key}"`)
-      fetch(provider, service, collection, [identifier])
+  function entity(target: EntityIdentifier, retrieve: boolean = false): EntityObject | null {
+    if (retrieve === true && !_entities.value[target]) {
+      console.debug(`[Chrono Manager][Store] - Force fetching entity "${target}"`)
+      fetch([target])
     }
 
-    return _entities.value[key] || null
+    return _entities.value[target] || null
   }
 
   /**
    * Get all entities for a specific collection
-   * 
-   * @param provider - provider identifier
-   * @param service - service identifier
-   * @param collection - collection identifier
-   * @param retrieve - Retrieve behavior: true = fetch if missing or refresh, false = cache only
-   * 
-   * @returns Array of entity objects
    */
-  function entitiesForCollection(provider: string, service: string | number, collection: string | number, retrieve: boolean = false): EntityObject[] {
-    const collectionKeyPrefix = `${provider}:${service}:${collection}:`
+  function entitiesForCollection(target: CollectionIdentifier, retrieve: boolean = false): EntityObject[] {
     const collectionEntities = Object.entries(_entities.value)
-      .filter(([key]) => key.startsWith(collectionKeyPrefix))
+      .filter(([key]) => key.startsWith(`${target}:`))
       .map(([_, entity]) => entity)
 
     if (retrieve === true && collectionEntities.length === 0) {
-      console.debug(`[Chrono Manager][Store] - Force fetching entities for collection "${provider}:${service}:${collection}"`)
-      const sources: SourceSelector = {
-        [provider]: {
-          [String(service)]: {
-            [String(collection)]: true
-          }
-        }
-      }
-      list(sources)
+      console.debug(`[Chrono Manager][Store] - Force fetching entities for collection "${target}"`)
+      list([target])
     }
 
     return collectionEntities
   }
 
   /**
-   * Create unique key for an entity
+   * Retrieve all or specific entities, optionally filtered by source collection identifiers
    */
-  function identifierKey(provider: string, service: string | number, collection: string | number, identifier: string | number): string {
-    return `${provider}:${service}:${collection}:${identifier}`
-  }
-
-  // Actions
-  
-  /**
-   * Retrieve all or specific entities, optionally filtered by source selector
-   * 
-   * @param sources - optional source selector
-   * @param filter - optional list filter
-   * @param sort - optional list sort
-   * @param range - optional list range
-   * 
-   * @returns Promise with entity object list keyed by identifier
-   */
-  async function list(sources?: SourceSelector, filter?: ListFilter, sort?: ListSort, range?: ListRange): Promise<Record<string, EntityObject>> {
+  async function list(sources: CollectionIdentifier[], filter?: ListFilter, sort?: ListSort, range?: ListRange): Promise<Record<string, EntityObject>> {
     transceiving.value = true
     try {
-      const response = await entityService.list({ sources, filter, sort, range })
-
-      // Flatten nested structure: provider:service:collection:entity -> "provider:service:collection:entity": object
       const entities: Record<string, EntityObject> = {}
-      Object.entries(response).forEach(([providerId, providerServices]) => {
-        Object.entries(providerServices).forEach(([serviceId, serviceCollections]) => {
-          Object.entries(serviceCollections).forEach(([collectionId, collectionEntities]) => {
-            Object.entries(collectionEntities).forEach(([entityId, entityData]) => {
-              const key = identifierKey(providerId, serviceId, collectionId, entityId)
-              entities[key] = entityData
-            })
-          })
-        })
-      })
 
-      // Merge retrieved entities into state
-      _entities.value = { ..._entities.value, ...entities }
+      await entityService.listStream({ sources, filter, sort, range }, (entity: EntityObject) => {
+        _entities.value[entity.identifier] = entity
+        entities[entity.identifier] = entity
+      })
 
       console.debug('[Chrono Manager][Store] - Successfully retrieved', Object.keys(entities).length, 'entities')
       return entities
@@ -131,26 +87,17 @@ export const useEntitiesStore = defineStore('chronoEntitiesStore', () => {
   }
 
   /**
-   * Retrieve specific entities by provider, service, collection, and identifiers
-   * 
-   * @param provider - provider identifier
-   * @param service - service identifier
-   * @param collection - collection identifier
-   * @param identifiers - array of entity identifiers to fetch
-   * 
-   * @returns Promise with entity objects keyed by identifier
+   * Retrieve specific entities by their identifiers
    */
-  async function fetch(provider: string, service: string | number, collection: string | number, identifiers: (string | number)[]): Promise<Record<string, EntityObject>> {
+  async function fetch(targets: EntityIdentifier[]): Promise<Record<string, EntityObject>> {
     transceiving.value = true
     try {
-      const response = await entityService.fetch({ provider, service, collection, identifiers })
+      const response = await entityService.fetch({ targets })
 
-      // Merge fetched entities into state
       const entities: Record<string, EntityObject> = {}
-      Object.entries(response).forEach(([identifier, entityData]) => {
-        const key = identifierKey(provider, service, collection, identifier)
-        entities[key] = entityData
-        _entities.value[key] = entityData
+      Object.entries(response).forEach(([identifier, entity]) => {
+        entities[identifier] = entity
+        _entities.value[identifier] = entity
       })
 
       console.debug('[Chrono Manager][Store] - Successfully fetched', Object.keys(entities).length, 'entities')
@@ -164,16 +111,12 @@ export const useEntitiesStore = defineStore('chronoEntitiesStore', () => {
   }
 
   /**
-   * Retrieve entity availability status for a given source selector
-   * 
-   * @param sources - source selector to check availability for
-   * 
-   * @returns Promise with entity availability status
+   * Retrieve entity availability status for a given set of entity identifiers
    */
-  async function extant(sources: SourceSelector) {
+  async function extant(targets: EntityIdentifier[]) {
     transceiving.value = true
     try {
-      const response = await entityService.extant({ sources })
+      const response = await entityService.extant({ targets })
       console.debug('[Chrono Manager][Store] - Successfully checked entity availability')
       return response
     } catch (error: any) {
@@ -184,132 +127,28 @@ export const useEntitiesStore = defineStore('chronoEntitiesStore', () => {
     }
   }
 
-  /**
-   * Create a new entity with given provider, service, collection, and data
-   * 
-   * @param provider - provider identifier for the new entity
-   * @param service - service identifier for the new entity
-   * @param collection - collection identifier for the new entity
-   * @param data - entity properties for creation
-   * 
-   * @returns Promise with created entity object
-   */
-  async function create(provider: string, service: string | number, collection: string | number, data: any): Promise<EntityObject> {
-    transceiving.value = true
-    try {
-      const response = await entityService.create({ provider, service, collection, properties: data })
-      
-      // Add created entity to state
-      const key = identifierKey(response.provider, response.service, response.collection, response.identifier)
-      _entities.value[key] = response
-
-      console.debug('[Chrono Manager][Store] - Successfully created entity:', key)
-      return response
-    } catch (error: any) {
-      console.error('[Chrono Manager][Store] - Failed to create entity:', error)
-      throw error
-    } finally {
-      transceiving.value = false
-    }
-  }
-
-  /**
-   * Update an existing entity with given provider, service, collection, identifier, and data
-   * 
-   * @param provider - provider identifier for the entity to update
-   * @param service - service identifier for the entity to update
-   * @param collection - collection identifier for the entity to update
-   * @param identifier - entity identifier for the entity to update
-   * @param data - entity properties for update
-   * 
-   * @returns Promise with updated entity object
-   */
-  async function update(provider: string, service: string | number, collection: string | number, identifier: string | number, data: any): Promise<EntityObject> {
-    transceiving.value = true
-    try {
-      const response = await entityService.update({ provider, service, collection, identifier, properties: data })
-      
-      // Update entity in state
-      const key = identifierKey(response.provider, response.service, response.collection, response.identifier)
-      _entities.value[key] = response
-
-      console.debug('[Chrono Manager][Store] - Successfully updated entity:', key)
-      return response
-    } catch (error: any) {
-      console.error('[Chrono Manager][Store] - Failed to update entity:', error)
-      throw error
-    } finally {
-      transceiving.value = false
-    }
-  }
-
-  /**
-   * Delete an entity by provider, service, collection, and identifier
-   * 
-   * @param provider - provider identifier for the entity to delete
-   * @param service - service identifier for the entity to delete
-   * @param collection - collection identifier for the entity to delete
-   * @param identifier - entity identifier for the entity to delete
-   * 
-   * @returns Promise with deletion result
-   */
-  async function remove(provider: string, service: string | number, collection: string | number, identifier: string | number): Promise<any> {
-    transceiving.value = true
-    try {
-      const response = await entityService.delete({ provider, service, collection, identifier })
-      
-      // Remove entity from state
-      const key = identifierKey(provider, service, collection, identifier)
-      delete _entities.value[key]
-
-      console.debug('[Chrono Manager][Store] - Successfully deleted entity:', key)
-      return response
-    } catch (error: any) {
-      console.error('[Chrono Manager][Store] - Failed to delete entity:', error)
-      throw error
-    } finally {
-      transceiving.value = false
-    }
-  }
-
   /**
    * Retrieve delta changes for entities
-   * 
-   * @param sources - source selector for delta check
-   * 
-   * @returns Promise with delta changes (additions, modifications, deletions)
-   * 
-   * Note: Delta returns only identifiers, not full entities.
-   * Caller should fetch full entities for additions/modifications separately.
    */
-  async function delta(sources: SourceSelector) {
+  async function delta(targets: (CollectionIdentifier | EntityIdentifier)[]) {
     transceiving.value = true
     try {
-      const response = await entityService.delta({ sources })
+      const response = await entityService.delta({ targets })
 
-      // Process delta and update store
-      Object.entries(response).forEach(([provider, providerData]) => {
-        // Skip if no changes for provider
+      Object.entries(response).forEach(([, providerData]) => {
         if (providerData === false) return
 
-        Object.entries(providerData).forEach(([service, serviceData]) => {
-          // Skip if no changes for service
+        Object.entries(providerData).forEach(([, serviceData]) => {
           if (serviceData === false) return
 
-          Object.entries(serviceData).forEach(([collection, collectionData]) => {
-            // Skip if no changes for collection
+          Object.entries(serviceData).forEach(([, collectionData]) => {
             if (collectionData === false) return
 
-            // Process deletions (remove from store)
             if (collectionData.deletions && collectionData.deletions.length > 0) {
               collectionData.deletions.forEach((identifier) => {
-                const key = identifierKey(provider, service, collection, identifier)
-                delete _entities.value[key]
+                delete _entities.value[identifier]
               })
             }
-            
-            // Note: additions and modifications contain only identifiers
-            // The caller should fetch full entities using the fetch() method
           })
         })
       })
@@ -324,16 +163,156 @@ export const useEntitiesStore = defineStore('chronoEntitiesStore', () => {
     }
   }
 
-  // Return public API
+  /**
+   * Create a new empty entity object
+   */
+  function fresh(): EntityObject {
+    return new EntityObject()
+  }
+
+  /**
+   * Create a new entity with given collection identifier and properties
+   */
+  async function create(target: CollectionIdentifier, properties: EntityPropertiesInterface): Promise<EntityObject> {
+    transceiving.value = true
+    try {
+      const response = await entityService.create({ target, properties })
+
+      _entities.value[response.identifier] = response
+
+      console.debug('[Chrono Manager][Store] - Successfully created entity:', response.identifier)
+      return response
+    } catch (error: any) {
+      console.error('[Chrono Manager][Store] - Failed to create entity:', error)
+      throw error
+    } finally {
+      transceiving.value = false
+    }
+  }
+
+  /**
+   * Update an existing entity with given entity identifier and properties
+   */
+  async function update(target: EntityIdentifier, properties: EntityPropertiesInterface): Promise<EntityObject> {
+    transceiving.value = true
+    try {
+      const response = await entityService.update({ target, properties })
+
+      _entities.value[response.identifier] = response
+
+      console.debug('[Chrono Manager][Store] - Successfully updated entity:', response.identifier)
+      return response
+    } catch (error: any) {
+      console.error('[Chrono Manager][Store] - Failed to update entity:', error)
+      throw error
+    } finally {
+      transceiving.value = false
+    }
+  }
+
+  /**
+   * Delete entities by their identifiers.
+   */
+  async function remove(targets: EntityIdentifier[]): Promise<{ successes: EntityIdentifier[], failures: EntityIdentifier[] }> {
+    transceiving.value = true
+    try {
+      const response = await entityService.delete({ targets })
+      const successes: EntityIdentifier[] = []
+      const failures: EntityIdentifier[] = []
+
+      Object.entries(response).forEach(([targetIdentifier, result]) => {
+        const originalIdentifier = targetIdentifier as EntityIdentifier
+        if (!result.disposition || result.disposition === 'error') {
+          console.warn(`[Chrono Manager][Store] - Entity delete on "${originalIdentifier}" returned an error: ${result.error})`)
+          failures.push(originalIdentifier)
+          return
+        }
+
+        if (result.disposition !== 'moved' && result.disposition !== 'deleted') {
+          console.warn(`[Chrono Manager][Store] - Entity delete on "${originalIdentifier}" returned invalid disposition: ${result.disposition})`)
+          failures.push(originalIdentifier)
+          return
+        }
+
+        const cachedEntity = _entities.value[originalIdentifier]
+
+        if (result.disposition === 'moved' && cachedEntity && result.mutation) {
+          const movedEntity = cachedEntity.clone().fromJson({
+            ...cachedEntity.toJson(),
+            collection: result.destination,
+            identifier: result.mutation,
+          })
+          _entities.value[result.mutation] = movedEntity
+        }
+
+        delete _entities.value[originalIdentifier]
+        successes.push(originalIdentifier)
+      })
+
+      console.debug('[Chrono Manager][Store] - Successfully deleted', successes.length, 'entities')
+      return { successes, failures }
+    } catch (error: any) {
+      console.error('[Chrono Manager][Store] - Failed to delete entities:', error)
+      throw error
+    } finally {
+      transceiving.value = false
+    }
+  }
+
+  /**
+   * Move entities to another collection.
+   */
+  async function move(target: CollectionIdentifier, sources: EntityIdentifier[]): Promise<{ successes: EntityIdentifier[], failures: EntityIdentifier[] }> {
+    transceiving.value = true
+    try {
+      const response = await entityService.move({ target, sources })
+      const successes: EntityIdentifier[] = []
+      const failures: EntityIdentifier[] = []
+
+      Object.entries(response).forEach(([sourceIdentifier, result]) => {
+        const originalIdentifier = sourceIdentifier as EntityIdentifier
+        if (!result.disposition || result.disposition === 'error') {
+          console.warn(`[Chrono Manager][Store] - Entity move on "${originalIdentifier}" returned an error: ${result.error})`)
+          failures.push(originalIdentifier)
+          return
+        }
+
+        if (result.disposition !== 'moved') {
+          console.warn(`[Chrono Manager][Store] - Entity move on "${originalIdentifier}" returned invalid disposition: ${result.disposition})`)
+          failures.push(originalIdentifier)
+          return
+        }
+
+        const cachedEntity = _entities.value[originalIdentifier]
+        if (cachedEntity && result.mutation) {
+          const movedEntity = cachedEntity.clone().fromJson({
+            ...cachedEntity.toJson(),
+            collection: result.destination,
+            identifier: result.mutation,
+          })
+          _entities.value[result.mutation] = movedEntity
+          delete _entities.value[originalIdentifier]
+        }
+
+        successes.push(originalIdentifier)
+      })
+
+      console.debug('[Chrono Manager][Store] - Successfully moved', successes.length, 'entities')
+      return { successes, failures }
+    } catch (error: any) {
+      console.error('[Chrono Manager][Store] - Failed to move entities:', error)
+      throw error
+    } finally {
+      transceiving.value = false
+    }
+  }
+
   return {
-    // State (readonly)
     transceiving: readonly(transceiving),
-    // Getters
     count,
     has,
     entities,
     entitiesForCollection,
-    // Actions
     entity,
     list,
     fetch,
@@ -342,5 +321,7 @@ export const useEntitiesStore = defineStore('chronoEntitiesStore', () => {
     update,
     delete: remove,
     delta,
+    fresh,
+    move,
   }
 })

src/stores/importStore.ts

@@ -0,0 +1,124 @@
+/**
+ * Contact Import Store
+ */
+
+import { computed, ref } from 'vue'
+import { defineStore } from 'pinia'
+import { entityService } from '../services/entityService'
+import type { CollectionIdentifier } from '../types/common'
+import type { EntityImportResponse } from '../types/entity'
+import type {
+  ImportCounters,
+  ImportFileAdd,
+  ImportFileEntry,
+  ImportFileOptions,
+  ImportSession,
+  ImportSessionStage
+} from '../types/import'
+
+const RECENT_RESULTS_CAP = 25
+const emptyCounters = (): ImportCounters => ({ discovered: 0, processed: 0, created: 0, updated: 0, exists: 0, error: 0 })
+
+export const useImportStore = defineStore('chronoImportStore', () => {
+  
+  // State
+
+  const nextId = ref(0)
+  const files = ref<ImportFileEntry[]>([])
+  const stage = ref<ImportSessionStage>('idle')
+  const running = ref(false)
+  const sessions = ref<Record<number, ImportSession>>({})
+  const order = ref<number[]>([])
+
+  // Computed
+
+  const totals = computed(() => order.value.reduce((total, id) => {
+    const counters = sessions.value[id]?.counters
+    if (counters) Object.keys(total).forEach(key => {
+      total[key as keyof ImportCounters] += counters[key as keyof ImportCounters]
+    })
+    return total
+  }, emptyCounters()))
+
+  // Actions
+
+  function addFile(file: ImportFileAdd): number {
+    const id = nextId.value++
+    files.value.push({
+      file: { id, ...file },
+      collectionId: null,
+      options: { supersede: false }
+    })
+    return id
+  }
+  
+  function removeAllFiles() {
+    files.value = []
+  }
+
+  function reset() {
+    stage.value = 'idle';
+    running.value = false;
+    sessions.value = {};
+    order.value = [];
+  }
+
+  function entryFor(id: number) {
+    return files.value.find(entry => entry.file.id === id)
+  }
+
+  /** Set the destination collection for a queued file. */
+  function setCollectionForFile(id: number, collectionId: CollectionIdentifier | null) {
+    const entry = entryFor(id);
+    if (entry) entry.collectionId = collectionId;
+  }
+
+  /** Merge option changes for a queued file without dropping untouched keys. */
+  function setOptionsForFile(id: number, options: Partial<ImportFileOptions>) {
+    const entry = entryFor(id);
+    if (entry) entry.options = { ...entry.options, ...options };
+  }
+
+  async function startImport(): Promise<ImportCounters> {
+    const entries = [...files.value]
+    sessions.value = {}
+    order.value = entries.map(entry => entry.file.id)
+    for (const entry of entries) sessions.value[entry.file.id] = {
+      fileId: entry.file.id, fileName: entry.file.name, targetIdentifier: entry.collectionId,
+      status: 'pending', counters: emptyCounters(), recentResults: [], lastError: null,
+    }
+    
+    running.value = true
+    stage.value = 'importing'
+    try {
+      for (const entry of entries) {
+        const session = sessions.value[entry.file.id]!
+        if (!entry.collectionId) throw new Error(`No calendar selected for "${entry.file.name}"`)
+        session.status = 'importing'
+        try {
+          await entityService.import(
+            { target: entry.collectionId, data: entry.file.contents, options: entry.options },
+            (object: EntityImportResponse) => {
+              session.counters.processed++
+              session.counters[object.disposition]++
+              session.recentResults = [object, ...session.recentResults].slice(0, RECENT_RESULTS_CAP)
+            },
+            expected => { session.counters.discovered = expected },
+          )
+          session.status = session.counters.error ? 'error' : 'completed'
+        } catch (error) {
+          session.status = 'error'
+          session.lastError = error instanceof Error ? error.message : String(error)
+          throw error
+        }
+      }
+      stage.value = 'completed'
+      return totals.value
+    } catch (error) {
+      stage.value = 'error'
+      throw error
+    } finally { running.value = false }
+  }
+
+  return { files, stage, running, sessions, order, totals, addFile, removeAllFiles, reset, setCollectionForFile, setOptionsForFile, startImport }
+})

src/stores/index.ts

@@ -2,3 +2,4 @@ export { useProvidersStore } from './providersStore';
 export { useServicesStore } from './servicesStore';
 export { useCollectionsStore } from './collectionsStore';
 export { useEntitiesStore } from './entitiesStore';
+export { useImportStore } from './importStore';

src/stores/providersStore.ts

@@ -6,7 +6,7 @@ import { ref, computed, readonly } from 'vue'
 import { defineStore } from 'pinia'
 import { providerService } from '../services'
 import { ProviderObject } from '../models/provider'
-import type { SourceSelector } from '../types'
+import type { ProviderIdentifier } from '../types'
 
 export const useProvidersStore = defineStore('chronoProvidersStore', () => {
   // State
@@ -54,10 +54,10 @@ export const useProvidersStore = defineStore('chronoProvidersStore', () => {
    * 
    * @returns Promise with provider object list keyed by provider identifier
    */
-  async function list(sources?: SourceSelector): Promise<Record<string, ProviderObject>> {
+  async function list(targets?: ProviderIdentifier[]): Promise<Record<string, ProviderObject>> {
     transceiving.value = true
     try {
-      const providers = await providerService.list({ sources })
+      const providers = await providerService.list({ targets })
 
       // Merge retrieved providers into state
       _providers.value = { ..._providers.value, ...providers }
@@ -82,7 +82,7 @@ export const useProvidersStore = defineStore('chronoProvidersStore', () => {
   async function fetch(identifier: string): Promise<ProviderObject> {
     transceiving.value = true
     try {
-      const provider = await providerService.fetch({ identifier })
+      const provider = await providerService.fetch({ target: identifier })
 
       // Merge fetched provider into state
       _providers.value[provider.identifier] = provider
@@ -104,10 +104,10 @@ export const useProvidersStore = defineStore('chronoProvidersStore', () => {
    * 
    * @returns Promise with provider availability status
    */
-  async function extant(sources: SourceSelector) {
+  async function extant(targets: ProviderIdentifier[]) {
     transceiving.value = true
     try {
-      const response = await providerService.extant({ sources })
+      const response = await providerService.extant({ targets })
 
       Object.entries(response).forEach(([providerId, providerStatus]) => {
         if (providerStatus === false) {
@@ -115,7 +115,7 @@ export const useProvidersStore = defineStore('chronoProvidersStore', () => {
         }
       })
 
-      console.debug('[Chrono Manager][Store] - Successfully checked', sources ? Object.keys(sources).length : 0, 'providers')
+      console.debug('[Chrono Manager][Store] - Successfully checked', targets ? targets.length : 0, 'providers')
       return response
     } catch (error: any) {
       console.error('[Chrono Manager][Store] - Failed to check providers:', error)

src/stores/servicesStore.ts

@@ -7,7 +7,8 @@ import { defineStore } from 'pinia'
 import { serviceService } from '../services'
 import { ServiceObject } from '../models/service'
 import type {
-  SourceSelector,
+  CollectionIdentifier,
+  ServiceIdentifier,
   ServiceInterface,
 } from '../types'
 
@@ -55,20 +56,30 @@ export const useServicesStore = defineStore('chronoServicesStore', () => {
    * @returns Service object or null
    */
   function service(provider: string, identifier: string | number, retrieve: boolean = false): ServiceObject | null {
-    const key = identifierKey(provider, identifier)
-    if (retrieve === true && !_services.value[key]) {
-      console.debug(`[Chrono Manager][Store] - Force fetching service "${key}"`)
-      fetch(provider, identifier)
+    return serviceByIdentifier(identifierKey(provider, identifier), retrieve)
   }
 
-    return _services.value[key] || null
+  /**
+   * Get a service from store by its unique identifier, with optional retrieval
+   */
+  function serviceByIdentifier(identifier: ServiceIdentifier, retrieve: boolean = false): ServiceObject | null {
+    if (retrieve === true && !_services.value[identifier]) {
+      console.debug(`[Chrono Manager][Store] - Force fetching service "${identifier}"`)
+      const separatorIndex = identifier.indexOf(':')
+      const provider = identifier.slice(0, separatorIndex)
+      const serviceIdentifier = identifier.slice(separatorIndex + 1)
+
+      void fetch(provider, serviceIdentifier)
+    }
+
+    return _services.value[identifier] ?? null
   }
 
   /**
    * Unique key for a service
    */
-  function identifierKey(provider: string, identifier: string | number | null): string {
-    return `${provider}:${identifier ?? ''}`
+  function identifierKey(provider: string, identifier: string | number | null): ServiceIdentifier {
+    return `${provider}:${identifier ?? ''}` as ServiceIdentifier
   }
 
   // Actions
@@ -80,10 +91,10 @@ export const useServicesStore = defineStore('chronoServicesStore', () => {
    * 
    * @returns Promise with service object list keyed by provider and service identifier
    */
-  async function list(sources?: SourceSelector): Promise<Record<string, ServiceObject>> {
+  async function list(targets?: ServiceIdentifier[] | CollectionIdentifier[]): Promise<Record<string, ServiceObject>> {
     transceiving.value = true
     try {
-      const response = await serviceService.list({ sources })
+      const response = await serviceService.list({ targets })
 
       // Flatten nested structure: provider-id: { service-id: object } -> "provider-id:service-id": object
       const services: Record<string, ServiceObject> = {}
@@ -141,12 +152,12 @@ export const useServicesStore = defineStore('chronoServicesStore', () => {
    * 
    * @returns Promise with service availability status
    */
-  async function extant(sources: SourceSelector) {
+  async function extant(targets: ServiceIdentifier[]) {
     transceiving.value = true
     try {
-      const response = await serviceService.extant({ sources })
+      const response = await serviceService.extant({ targets })
       
-      console.debug('[Chrono Manager][Store] - Successfully checked', sources ? Object.keys(sources).length : 0, 'services')
+      console.debug('[Chrono Manager][Store] - Successfully checked', targets?.length ?? 0, 'services')
       return response
     } catch (error: any) {
       console.error('[Chrono Manager][Store] - Failed to check services:', error)
@@ -192,10 +203,14 @@ export const useServicesStore = defineStore('chronoServicesStore', () => {
    * 
    * @returns Promise with updated service object
    */
-  async function update(provider: string, identifier: string | number, data: Partial<ServiceInterface>): Promise<ServiceObject> {
+  async function update(provider: string, identifier: string | number, delta: boolean, data: ServiceObject | Partial<ServiceInterface>): Promise<ServiceObject> {
     transceiving.value = true
     try {
-      const service = await serviceService.update({ provider, identifier, data })
+      const payload: Partial<ServiceInterface> = data instanceof ServiceObject
+        ? (delta ? data.toJson(true) : data.toJson())
+        : data
+
+      const service = await serviceService.update({ provider, identifier, delta, data: payload })
       
       // Merge updated service into state
       const key = identifierKey(service.provider, service.identifier)
@@ -249,6 +264,7 @@ export const useServicesStore = defineStore('chronoServicesStore', () => {
     
     // Actions
     service,
+    serviceByIdentifier,
     list,
     fetch,
     extant,

src/types/collection.ts

@@ -1,27 +1,37 @@
 /**
  * Collection type definitions
  */
-import type { ListFilter, ListSort, SourceSelector } from './common';
+import type {
+  ServiceIdentifier,
+  CollectionIdentifier,
+  ListFilter,
+  ListSort
+} from './common';
 
 /**
  * Collection information
  */
-export interface CollectionInterface {
+export interface CollectionInterface<T = CollectionPropertiesInterface> {
+  '@type': string;
+  version: number;
   provider: string;
   service: string | number;
-  collection: string | number | null;
-  identifier: string | number;
+  collection: CollectionIdentifier | null;
+  identifier: CollectionIdentifier;
   signature?: string | null;
   created?: string | null;
   modified?: string | null;
-  properties: CollectionPropertiesInterface;
+  properties: T;
+}
+
+export interface CollectionModelInterface extends Omit<CollectionInterface<CollectionPropertiesInterface>, '@type' | 'version' | 'properties'> {
+  properties: CollectionPropertiesModelInterface;
 }
 
 export type CollectionContentTypes = 'event' | 'task' | 'journal';
 
 export interface CollectionBaseProperties {
   '@type': string;
-  version: number;
 }
 
 export interface CollectionImmutableProperties extends CollectionBaseProperties {
@@ -38,11 +48,13 @@ export interface CollectionMutableProperties extends CollectionBaseProperties {
 
 export interface CollectionPropertiesInterface extends CollectionMutableProperties, CollectionImmutableProperties {}
 
+export interface CollectionPropertiesModelInterface extends Omit<CollectionPropertiesInterface, '@type'> {}
+
 /**
  * Collection list
  */
 export interface CollectionListRequest {
-  sources?: SourceSelector;
+  sources?: ServiceIdentifier[] | CollectionIdentifier[];
   filter?: ListFilter;
   sort?: ListSort;
 }
@@ -59,18 +71,18 @@ export interface CollectionListResponse {
  * Collection fetch
  */
 export interface CollectionFetchRequest {
-  provider: string;
-  service: string | number;
-  collection: string | number;
+  targets: CollectionIdentifier[];
 }
 
-export interface CollectionFetchResponse extends CollectionInterface {}
+export interface CollectionFetchResponse {
+  [identifier: CollectionIdentifier]: CollectionInterface;
+}
 
 /**
  * Collection extant
  */
 export interface CollectionExtantRequest {
-  sources: SourceSelector;
+  targets: CollectionIdentifier[];
 }
 
 export interface CollectionExtantResponse {
@@ -87,7 +99,6 @@ export interface CollectionExtantResponse {
 export interface CollectionCreateRequest {
   provider: string;
   service: string | number;
-  collection?: string | number | null; // Parent Collection Identifier
   properties: CollectionMutableProperties;
 }
 
@@ -97,9 +108,7 @@ export interface CollectionCreateResponse extends CollectionInterface {}
  * Collection modify
  */
 export interface CollectionUpdateRequest {
-  provider: string;
-  service: string | number;
-  identifier: string | number;
+  target: CollectionIdentifier;
   properties: CollectionMutableProperties;
 }
 
@@ -109,14 +118,13 @@ export interface CollectionUpdateResponse extends CollectionInterface {}
  * Collection delete
  */
 export interface CollectionDeleteRequest {
-  provider: string;
-  service: string | number;
-  identifier: string | number;
+  target: CollectionIdentifier;
   options?: {
     force?: boolean; // Whether to force delete even if collection is not empty
   };
 }
 
 export interface CollectionDeleteResponse {
-  success: boolean;
+  disposition: 'deleted' | 'moved';
+  mutation?: CollectionInterface | null; // If moved, the new location of the collection
 }

src/types/common.ts

@@ -44,34 +44,57 @@ export interface ApiErrorResponse {
 export type ApiResponse<T = any> = ApiSuccessResponse<T> | ApiErrorResponse;
 
 /**
- * Selector for targeting specific providers, services, collections, or entities in list or extant operations.
- * 
- * Example usage:
- * {
- *   "provider1": true, // Select all services/collections/entities under provider1
- *   "provider2": {
- *     "serviceA": true, // Select all collections/entities under serviceA of provider2
- *     "serviceB": {
- *       "collectionX": true, // Select all entities under collectionX of serviceB of provider2
- *       "collectionY": [1, 2, 3] // Select entities with identifiers 1, 2, and 3 under collectionY of serviceB of provider2
- *     }
- *   }
- * }
+ * Stream control start line.
  */
-export type SourceSelector = {
-  [provider: string]: boolean | ServiceSelector;
-};
+export interface ApiStreamStartResponse {
+  type: 'control';
+  status: 'start';
+  version: number;
+  transaction: string;
+  total?: number;
+}
 
-export type ServiceSelector = {
-  [service: string]: boolean | CollectionSelector;
-};
+/**
+ * Stream control end line
+ */
+export interface ApiStreamEndResponse {
+  type: 'control';
+  status: 'end';
+  total: number;
+}
 
-export type CollectionSelector = {
-  [collection: string | number]: boolean | EntitySelector;
-};
+/**
+ * Stream error line
+ */
+export interface ApiStreamErrorResponse {
+  type: 'error';
+  message: string;
+}
 
-export type EntitySelector = (string | number)[];
+export interface ApiStreamDataResponse<T = any> {
+  type: 'data';
+  data: T;
+}
 
+/**
+ * Shared stream control lines
+ */
+export type ApiStreamResponse<T = any> =
+  | ApiStreamStartResponse
+  | ApiStreamEndResponse
+  | ApiStreamErrorResponse
+  | ApiStreamDataResponse<T>;
+
+/**
+ * Identifiers for targeting specific providers, services, collections, or entities in list or extant operations.
+ *
+ * Operations accept flat arrays of colon-separated identifier strings, e.g.
+ * ["caldav:account1:calendar", "caldav:account1:calendar:1001"].
+ */
+export type ProviderIdentifier = `${string}`;
+export type ServiceIdentifier = `${string}:${string}`;
+export type CollectionIdentifier = `${string}:${string}:${string | number}`;
+export type EntityIdentifier = `${string}:${string}:${string}:${string | number}`;
 
 /**
  * Filter comparison for list operations
@@ -142,15 +165,29 @@ export interface ListSort {
 }
 
 /**
- * Range for list operations
+ * Tally (pagination) range for list operations
  *
  * Values can be:
  * - relative based on item identifier
  * - absolute based on item count
  */
-export interface ListRange {
+export interface ListRangeTally {
   type: 'tally';
   anchor: 'relative' | 'absolute';
   position: string | number;
   tally: number;
 }
+
+/**
+ * Date (pagination) range for list operations
+ */
+export interface ListRangeDate {
+  type: 'date';
+  start: number;
+  end: number;
+}
+
+/**
+ * Range for list operations
+ */
+export type ListRange = ListRangeTally | ListRangeDate;

src/types/entity.ts

@@ -1,64 +1,86 @@
 /**
  * Entity type definitions
  */
-import type { ListFilter, ListRange, ListSort, SourceSelector } from './common';
+import type {
+  CollectionIdentifier,
+  EntityIdentifier,
+  ListFilter,
+  ListRange,
+  ListSort,
+} from './common';
 import type { EventInterface } from './event';
 import type { TaskInterface } from './task';
 import type { JournalInterface } from './journal';
+import type { ImportDisposition, ImportFileOptions } from './import';
+
+export type EntityPropertiesInterface = EventInterface | TaskInterface | JournalInterface;
 
 /**
  * Entity definition
  */
-export interface EntityInterface<T = EventInterface | TaskInterface | JournalInterface> {
+export interface EntityInterface<T = EntityPropertiesInterface> {
+  '@type': string;
+  version: number;
   provider: string;
   service: string;
-  collection: string | number;
-  identifier: string | number;
+  collection: CollectionIdentifier;
+  identifier: EntityIdentifier;
   signature: string | null;
   created: string | null;
   modified: string | null;
   properties: T;
 }
 
+export interface EntityModelInterface extends Omit<EntityInterface<EntityPropertiesInterface>, '@type' | 'version'> {}
+
 /**
- * Entity list
+ * Entity list bulk
  */
-export interface EntityListRequest {
-  sources?: SourceSelector;
+export interface EntityListBulkRequest {
+  sources?: CollectionIdentifier[];
   filter?: ListFilter;
   sort?: ListSort;
   range?: ListRange;
 }
 
-export interface EntityListResponse {
+export interface EntityListBulkResponse {
   [providerId: string]: {
     [serviceId: string]: {
       [collectionId: string]: {
-        [identifier: string]: EntityInterface<EventInterface | TaskInterface | JournalInterface>;
+        [identifier: string]: EntityInterface;
       };
     };
   };
 }
 
+/**
+ * Entity list stream
+ */
+export interface EntityListStreamRequest {
+  sources?: CollectionIdentifier[];
+  filter?: ListFilter;
+  sort?: ListSort;
+  range?: ListRange;
+}
+
+export interface EntityListStreamResponse extends EntityInterface {}
+
 /**
  * Entity fetch
  */
 export interface EntityFetchRequest {
-  provider: string;
-  service: string | number;
-  collection: string | number;
-  identifiers: (string | number)[];
+  targets: EntityIdentifier[];
 }
 
 export interface EntityFetchResponse {
-  [identifier: string]: EntityInterface<EventInterface | TaskInterface | JournalInterface>;
+  [identifier: string]: EntityInterface;
 }
 
 /**
  * Entity extant
  */
 export interface EntityExtantRequest {
-  sources: SourceSelector;
+  targets: EntityIdentifier[];
 }
 
 export interface EntityExtantResponse {
@@ -71,50 +93,13 @@ export interface EntityExtantResponse {
   };
 }
 
-/**
- * Entity create
- */
-export interface EntityCreateRequest<T = EventInterface | TaskInterface | JournalInterface> {
-  provider: string;
-  service: string | number;
-  collection: string | number;
-  properties: T;
-}
-
-export interface EntityCreateResponse<T = EventInterface | TaskInterface | JournalInterface> extends EntityInterface<T> {}
-
-/**
- * Entity update
- */
-export interface EntityUpdateRequest<T = EventInterface | TaskInterface | JournalInterface> {
-  provider: string;
-  service: string | number;
-  collection: string | number;
-  identifier: string | number;
-  properties: T;
-}
-
-export interface EntityUpdateResponse<T = EventInterface | TaskInterface | JournalInterface> extends EntityInterface<T> {}
-
-/**
- * Entity delete
- */
-export interface EntityDeleteRequest {
-  provider: string;
-  service: string | number;
-  collection: string | number;
-  identifier: string | number;
-}
-
-export interface EntityDeleteResponse {
-  success: boolean;
-}
-
 /**
  * Entity delta
  */
 export interface EntityDeltaRequest {
-  sources: SourceSelector;
+  // Each target is provider:service:collection, or provider:service:collection:signature
+  // to request a delta relative to a known signature (the signature is the entity slot).
+  targets: (CollectionIdentifier | EntityIdentifier)[];
 }
 
 export interface EntityDeltaResponse {
@@ -129,3 +114,69 @@ export interface EntityDeltaResponse {
     };
   };
 }
+
+/**
+ * Entity create
+ */
+export interface EntityCreateRequest<T = EntityPropertiesInterface> {
+  target: CollectionIdentifier;
+  properties: T;
+  options?: Record<string, any>;
+}
+
+export interface EntityCreateResponse<T = EntityPropertiesInterface> extends EntityInterface<T> {}
+
+/**
+ * Entity update
+ */
+export interface EntityUpdateRequest<T = EntityPropertiesInterface> {
+  target: EntityIdentifier;
+  properties: T;
+}
+
+export interface EntityUpdateResponse<T = EntityPropertiesInterface> extends EntityInterface<T> {}
+
+/**
+ * Entity delete
+ */
+export interface EntityDeleteRequest {
+  targets: EntityIdentifier[];
+}
+
+export interface EntityDeleteResponse {
+  [targetIdentifier: EntityIdentifier]: {
+    disposition: 'deleted' | 'moved' | 'error';
+    destination: CollectionIdentifier | null;
+    mutation: EntityIdentifier | null;
+    error?: string;
+  };
+}
+
+/**
+ * Entity move
+ */
+export interface EntityMoveRequest {
+  target: CollectionIdentifier;
+  sources: EntityIdentifier[];
+}
+
+export interface EntityMoveResponse {
+  [sourceIdentifier: EntityIdentifier]: {
+    disposition: 'moved' | 'error';
+    destination: CollectionIdentifier | null;
+    mutation: EntityIdentifier | null;
+    error?: string;
+  };
+}
+
+export interface EntityImportRequest {
+  target: CollectionIdentifier;
+  data: string;
+  options: ImportFileOptions;
+}
+
+export interface EntityImportResponse {
+  identifier: string | null;
+  disposition: ImportDisposition;
+  errors: string[];
+}

src/types/import.ts

@@ -0,0 +1,19 @@
+import type { CollectionIdentifier } from './common';
+import type { EntityImportResponse } from './entity';
+
+export type ImportDisposition = 'created' | 'updated' | 'exists' | 'error';
+export type ImportSessionStage = 'idle' | 'selecting' | 'importing' | 'completed' | 'error';
+export interface ImportFileOptions { supersede: boolean; }
+export interface ImportFileSource { id: number; name: string; contents: string; size: number; type: string; }
+export type ImportFileAdd = Omit<ImportFileSource, 'id'>;
+export interface ImportFileEntry { file: ImportFileSource; collectionId: CollectionIdentifier | null; options: ImportFileOptions; }
+export interface ImportCounters { discovered: number; processed: number; created: number; updated: number; exists: number; error: number; }
+export interface ImportSession {
+  fileId: number;
+  fileName: string;
+  targetIdentifier: CollectionIdentifier | null;
+  status: 'pending' | 'importing' | 'completed' | 'error';
+  counters: ImportCounters;
+  recentResults: EntityImportResponse[];
+  lastError: string | null;
+}

src/types/index.ts

@@ -3,6 +3,7 @@ export type * from './common';
 export type * from './entity';
 export type * from './event';
 export type * from './journal';
+export type * from './import';
 export type * from './provider';
 export type * from './service';
 export type * from './task';

src/types/provider.ts

@@ -1,7 +1,7 @@
 /**
  * Provider type definitions
  */
-import type { SourceSelector } from "./common";
+import type { ProviderIdentifier } from './common';
 
 /**
  * Provider capabilities
@@ -28,22 +28,24 @@ export interface ProviderInterface {
   capabilities: ProviderCapabilitiesInterface;
 }
 
+export interface ProviderModelInterface extends Omit<ProviderInterface, '@type'> {}
+
 /**
  * Provider list
  */
 export interface ProviderListRequest {
-  sources?: SourceSelector;
+  targets?: ProviderIdentifier[];
 }
 
 export interface ProviderListResponse {
-  [identifier: string]: ProviderInterface;
+  [identifier: ProviderIdentifier]: ProviderInterface;
 }
 
 /**
  * Provider fetch 
  */
 export interface ProviderFetchRequest {
-  identifier: string;
+  target: ProviderIdentifier;
 }
 
 export interface ProviderFetchResponse extends ProviderInterface {}
@@ -52,9 +54,9 @@ export interface ProviderFetchResponse extends ProviderInterface {}
  * Provider extant 
  */
 export interface ProviderExtantRequest {
-  sources: SourceSelector;
+  targets: ProviderIdentifier[];
 }
 
 export interface ProviderExtantResponse {
-  [identifier: string]: boolean;
+  [identifier: ProviderIdentifier]: boolean;
 }

src/types/service.ts

@@ -1,7 +1,13 @@
 /**
  * Service type definitions
  */
-import type { SourceSelector, ListFilterComparisonOperator } from './common';
+import type {
+  ServiceIdentifier,
+  CollectionIdentifier,
+  ListFilterComparisonOperator,
+} from './common';
+import type { Identity } from '@/models/identity';
+import type { Location } from '@/models/location';
 
 /**
  * Service capabilities
@@ -47,11 +53,18 @@ export interface ServiceInterface {
   auxiliary?: Record<string, any>;  // Provider-specific extension data
 }
 
+export interface ServiceModelInterface extends Omit<{
+  [K in keyof ServiceInterface]-?: Exclude<ServiceInterface[K], undefined>;
+}, '@type' | 'location' | 'identity'> {
+  location: Location | null;
+  identity: Identity | null;
+}
+
 /**
  * Service list
  */
 export interface ServiceListRequest {
-  sources?: SourceSelector;
+  targets?: ServiceIdentifier[] | CollectionIdentifier[];
 }
 
 export interface ServiceListResponse {
@@ -74,7 +87,7 @@ export interface ServiceFetchResponse extends ServiceInterface {}
  * Service extant
  */
 export interface ServiceExtantRequest {
-  sources: SourceSelector;
+  targets: ServiceIdentifier[];
 }
 
 export interface ServiceExtantResponse {
@@ -99,6 +112,7 @@ export interface ServiceCreateResponse extends ServiceInterface {}
 export interface ServiceUpdateRequest {
   provider: string;
   identifier: string | number;
+  delta?: boolean;
   data: Partial<ServiceInterface>;
 }
 

tests/js/unit/base.test.ts

@@ -0,0 +1,30 @@
+import { describe, it, expect } from 'vitest'
+
+describe('Basic Tests', () => {
+  it('should perform basic assertion', () => {
+    expect(true).toBe(true)
+  })
+
+  it('should test array operations', () => {
+    const array = ['foo', 'bar', 'baz']
+
+    expect(array).toHaveLength(3)
+    expect(array).toContain('bar')
+    expect(array[0]).toBe('foo')
+  })
+
+  it('should test string operations', () => {
+    const string = 'Hello, World!'
+
+    expect(string).toContain('World')
+    expect(string.length).toBe(13)
+  })
+
+  it('should test object operations', () => {
+    const obj = { foo: 'bar', count: 42 }
+
+    expect(obj).toHaveProperty('foo')
+    expect(obj.foo).toBe('bar')
+    expect(obj.count).toBeGreaterThan(40)
+  })
+})

tests/js/vitest.config.ts

@@ -0,0 +1,31 @@
+import { fileURLToPath } from 'node:url'
+import { defineConfig, configDefaults } from 'vitest/config'
+import path from 'path'
+
+const __filename = fileURLToPath(import.meta.url)
+const __dirname = path.dirname(__filename)
+
+export default defineConfig({
+  resolve: {
+    alias: {
+      '@': path.resolve(__dirname, '../../src'),
+      '@KTXC': path.resolve(__dirname, '../../../../core/src'),
+    },
+  },
+  test: {
+    environment: 'jsdom',
+    exclude: [...configDefaults.exclude, 'e2e/**'],
+    root: fileURLToPath(new URL('../../', import.meta.url)),
+    coverage: {
+      provider: 'v8',
+      reporter: ['text', 'json', 'html'],
+      exclude: [
+        'node_modules/',
+        'tests/',
+        '**/*.d.ts',
+        '**/*.config.*',
+        '**/dist/**',
+      ],
+    },
+  },
+})

tests/php/Integration/BaseTest.php

@@ -0,0 +1,29 @@
+<?php
+
+namespace KTXT\ChronoManager\Tests\Integration;
+
+use PHPUnit\Framework\TestCase;
+
+class BaseTest extends TestCase
+{
+    public function testBasicAssertion(): void
+    {
+        $this->assertTrue(true);
+    }
+
+    public function testArrayOperations(): void
+    {
+        $array = ['foo' => 'bar'];
+
+        $this->assertArrayHasKey('foo', $array);
+        $this->assertEquals('bar', $array['foo']);
+    }
+
+    public function testStringOperations(): void
+    {
+        $string = 'Hello, World!';
+
+        $this->assertStringContainsString('World', $string);
+        $this->assertEquals(13, strlen($string));
+    }
+}

tests/php/Unit/BaseTest.php

@@ -0,0 +1,29 @@
+<?php
+
+namespace KTXT\ChronoManager\Tests\Unit;
+
+use PHPUnit\Framework\TestCase;
+
+class BaseTest extends TestCase
+{
+    public function testBasicAssertion(): void
+    {
+        $this->assertTrue(true);
+    }
+
+    public function testArrayOperations(): void
+    {
+        $array = ['foo' => 'bar'];
+
+        $this->assertArrayHasKey('foo', $array);
+        $this->assertEquals('bar', $array['foo']);
+    }
+
+    public function testStringOperations(): void
+    {
+        $string = 'Hello, World!';
+
+        $this->assertStringContainsString('World', $string);
+        $this->assertEquals(13, strlen($string));
+    }
+}

tests/php/bootstrap.php

@@ -0,0 +1,17 @@
+<?php
+
+require dirname(__DIR__, 2).'/lib/vendor/autoload.php';
+
+// When this module is checked out inside a full server (server/modules/<handle>,
+// as it is in CI and in this monorepo checkout), also load the server's own
+// core/shared autoloader so tests can reference framework (KTXC/KTXF) types.
+// Standalone module checkouts without a server alongside them skip this.
+define('SERVER_ROOT', dirname(__DIR__, 4));
+$serverAutoload = SERVER_ROOT . '/vendor/autoload.php';
+if (is_file($serverAutoload)) {
+    require $serverAutoload;
+}
+
+if (isset($_SERVER['APP_DEBUG']) && $_SERVER['APP_DEBUG']) {
+    umask(0000);
+}

tests/php/phpunit.xml

@@ -0,0 +1,41 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<!-- https://phpunit.readthedocs.io/en/latest/configuration.html -->
+<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:noNamespaceSchemaLocation="../../lib/vendor/phpunit/phpunit/phpunit.xsd"
+         colors="true"
+         failOnDeprecation="true"
+         failOnNotice="true"
+         failOnWarning="true"
+         bootstrap="bootstrap.php"
+         cacheDirectory="../../.phpunit.cache"
+>
+    <php>
+        <ini name="display_errors" value="1" />
+        <ini name="error_reporting" value="-1" />
+        <server name="APP_ENV" value="test" force="true" />
+        <server name="SHELL_VERBOSITY" value="-1" />
+    </php>
+
+    <testsuites>
+        <testsuite name="Unit Tests">
+            <directory>Unit</directory>
+        </testsuite>
+        <testsuite name="Integration Tests">
+            <directory>Integration</directory>
+        </testsuite>
+    </testsuites>
+
+    <source ignoreSuppressionOfDeprecations="true"
+            ignoreIndirectDeprecations="true"
+            restrictNotices="true"
+            restrictWarnings="true"
+    >
+        <include>
+            <directory>../../lib</directory>
+        </include>
+    </source>
+
+    <extensions>
+    </extensions>
+</phpunit>