fix(deps): update dependency pinia to v4

Reviewed-on: #83

.github/workflows/build-test.yml

@@ -0,0 +1,58 @@
+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: Install Mail Manager
+        uses: actions/checkout@v6.0.2
+        with:
+          repository: Nodarx/mail_manager
+          ref: main
+          path: server/modules/mail_manager
+          github-server-url: https://git.ktrix.dev
+
+      - name: Install People Manager
+        uses: actions/checkout@v6.0.2
+        with:
+          repository: Nodarx/people_manager
+          ref: main
+          path: server/modules/people_manager
+          github-server-url: https://git.ktrix.dev
+
+      - name: Checkout Pull Request
+        uses: actions/checkout@v6.0.2
+        with:
+          repository: ${{ github.repository }}
+          ref: ${{ github.event.pull_request.head.sha }}
+          path: server/modules/mail
+          github-server-url: https://git.ktrix.dev
+
+      - name: Install dependencies
+        run: npm ci
+        working-directory: server/modules/mail
+
+      - name: Build
+        run: npm run build
+        working-directory: server/modules/mail

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

@@ -0,0 +1,58 @@
+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: Install Mail Manager
+        uses: actions/checkout@v6.0.2
+        with:
+          repository: Nodarx/mail_manager
+          ref: main
+          path: server/modules/mail_manager
+          github-server-url: https://git.ktrix.dev
+
+      - name: Install People Manager
+        uses: actions/checkout@v6.0.2
+        with:
+          repository: Nodarx/people_manager
+          ref: main
+          path: server/modules/people_manager
+          github-server-url: https://git.ktrix.dev
+
+      - name: Checkout Pull Request
+        uses: actions/checkout@v6.0.2
+        with:
+          repository: ${{ github.repository }}
+          ref: ${{ github.event.pull_request.head.sha }}
+          path: server/modules/mail
+          github-server-url: https://git.ktrix.dev
+
+      - name: Install dependencies
+        run: npm ci
+        working-directory: server/modules/mail
+
+      - name: Run tests
+        run: npm run test:unit
+        working-directory: server/modules/mail

.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:7
+        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/mail
+          github-server-url: https://git.ktrix.dev
+
+      - name: Install module dependencies
+        run: composer install --prefer-dist --no-progress
+        working-directory: server/modules/mail
+
+      - name: Install and enable module
+        working-directory: server
+        run: |
+          php bin/console module:install mail
+          php bin/console module:enable mail
+
+      - name: Run integration tests
+        working-directory: server/modules/mail
+        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/mail
+          github-server-url: https://git.ktrix.dev
+
+      - name: Install dependencies
+        run: composer install --prefer-dist --no-progress
+        working-directory: server/modules/mail
+
+      - name: Run tests
+        run: composer test:unit
+        working-directory: server/modules/mail

.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

@@ -12,12 +12,10 @@ node_modules/
 /static/
 
 # Backend development
+/vendor/
 /lib/vendor/
 coverage/
-phpunit.xml.cache
-.phpunit.result.cache
-.php-cs-fixer.cache
-.phpstan.cache
+*.cache
 .phpactor/
 
 # Editors

composer.json

@@ -9,6 +9,18 @@
         }
     },
     "require": {
-        "php": ">=8.2"
+        "php": ">=8.3"
+    },
+    "require-dev": {
+        "phpunit/phpunit": "^12.0"
+    },
+    "autoload-dev": {
+        "psr-4": {
+            "KTXT\\Mail\\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/CompositionManager.php

@@ -0,0 +1,396 @@
+<?php
+
+declare(strict_types=1);
+
+namespace KTXM\Mail;
+
+use InvalidArgumentException;
+use KTXF\Mail\Object\Address;
+use KTXF\Mail\Object\AddressInterface;
+use KTXF\Mail\Object\MessagePart;
+use KTXF\Mail\Object\MessagePropertiesMutableInterface;
+use KTXF\Mail\Service\ServiceEntitySubmitInterface;
+use KTXF\Mail\Submission\EntitySubmitResult;
+use KTXF\Resource\Identifier\EntityIdentifierInterface;
+use KTXF\Resource\Identifier\ResourceIdentifier;
+use KTXF\Utile\UUID;
+use KTXM\Mail\Stores\CompositionStore;
+use KTXM\MailManager\Manager as MailManager;
+
+class CompositionManager {
+
+    public function __construct(
+        private readonly CompositionStore $compositionStore,
+        private readonly MailManager $mailManager,
+    ) {}
+
+    public function stage(string $tenantId, string $userId, string $identifier, string $action, array $sender, array $message, ?string $source = null): array {
+        if ($identifier === '') {
+            throw new InvalidArgumentException('Draft identifier is required');
+        }
+
+        $snapshot = [
+            'identifier' => $identifier,
+            'action' => $action,
+            'source' => $source,
+            'revision' => 1,
+            'disposition' => 'staged',
+            'sender' => $sender,
+            'message' => $message,
+            'attachments' => [],
+        ];
+
+        $this->compositionStore->compositionSave($tenantId, $userId, $identifier, $snapshot);
+
+        if ($action === 'forward') {
+            $sourceIndentifier = ResourceIdentifier::fromString($source);
+            if ($sourceIndentifier === null) {
+                throw new InvalidArgumentException('Invalid source identifier');
+            }
+            $entities = $this->mailManager->entityFetchBulk($tenantId, $userId, $sourceIndentifier);
+            if (count($entities) === 0) {
+                throw new InvalidArgumentException('Source message not found');
+            }
+            // retrieve the attachments from the source message
+            $attachments = reset($entities)->getProperties()->getAttachments();
+            // For each attachment, we download the content and stage it in the composition store
+            foreach ($attachments as $attachment) {
+                $contentId = $attachment->getContentId();
+                $isInline = $attachment->getDisposition() === 'inline';
+                // target part
+                $targetPart = [
+                    'partId' => $attachment->getId(),
+                    'blobId' => $attachment->getBlobId(),
+                    'cid' => $contentId,
+                    'cId' => $contentId,
+                ];
+                // retrieve the attachment content as a stream
+                $data = $this->mailManager->entityDownload($tenantId, $userId, $sourceIndentifier, $targetPart);
+                // stage the attachment in the composition store
+                $meta = $this->compositionStore->attachmentStageFromStream(
+                    tenantId: $tenantId,
+                    userId: $userId,
+                    compositionId: $identifier,
+                    attachmentId: UUID::v4(),
+                    data: $data,
+                );
+                // supplement the attachment metadata with source information
+                $meta['origin'] = 'source';
+                $meta['source'] = $source;
+                $meta['partId'] = $attachment->getId();
+                $meta['blobId'] = $attachment->getBlobId();
+                $meta['cid'] = $contentId;
+                $meta['contentId'] = $contentId;
+                $meta['disposition'] = $attachment->getDisposition();
+                $meta['inline'] = $isInline;
+                $meta['name'] = $attachment->getName() ?? $meta['name'];
+                $meta['type'] = $attachment->getType() ?? $meta['type'];
+                $meta['size'] = $attachment->getSize() ?? $meta['size'];
+                $snapshot['attachments'][$meta['identifier']] = $meta;
+            }
+            // update the snapshot with the staged attachments
+            $this->compositionStore->compositionSave($tenantId, $userId, $identifier, $snapshot);
+        }
+
+        return $snapshot;
+    }
+
+    public function patch(string $tenantId, string $userId, string $identifier, array $data): array {
+        $composed = $this->compositionStore->compositionFetch($tenantId, $userId, $identifier);
+
+        if ($composed === null) {
+            $result['disposition'] = 'error';
+            $result['error'] = [
+                'type' => 'composition_not_found',
+                'message' => 'Composition not found',
+            ];
+            return $result;
+        }
+
+        if (!isset($data['revision']) || !is_int($data['revision']) || $data['revision'] < $composed['revision']) {
+            $result['disposition'] = 'error';
+            $result['error'] = [
+                'type' => 'revision_mismatch',
+                'message' => 'Revision mismatch',
+                'currentRevision' => $composed['revision'],
+            ];
+            return $result;
+        }
+
+        // Apply the patch data to the composed message
+        $composed['revision'] = $data['revision'];
+        $composed['sender'] = $data['sender'] ?? [];
+        $composed['message'] = $data['message'] ?? [];
+
+        $this->compositionStore->compositionSave($tenantId, $userId, $identifier, $composed);
+
+        $result = [
+            'identifier' => $identifier,
+            'disposition' => 'patched',
+        ];
+        return $result;
+    }
+
+    public function discard(string $tenantId, string $userId, string $identifier): array {
+        return [
+            'identifier' => $identifier,
+            'disposition' => $this->compositionStore->compositionDiscard($tenantId, $userId, $identifier),
+        ];
+    }
+
+    public function send(string $tenantId, string $userId, string $identifier, array $sender, array $message, array $attachments): array {
+        $composed = $this->compositionStore->compositionFetch($tenantId, $userId, $identifier);
+
+        if ($composed === null) {
+            $result['disposition'] = 'error';
+            $result['error'] = [
+                'type' => 'composition_not_found',
+                'message' => 'Composition not found',
+            ];
+            return $result;
+        }
+
+        // store the message and sender information before sending
+        $composed['sender'] = $sender;
+        $composed['message'] = $message;
+        $this->compositionStore->compositionSave($tenantId, $userId, $identifier, $composed);
+
+        // validate the sender address before attempting to send the message
+        if ($sender['address'] === '' || !filter_var($sender['address'], FILTER_VALIDATE_EMAIL)) {
+            $result['disposition'] = 'error';
+            $result['error'] = [
+                'type' => 'composition_invalid_sender',
+                'message' => 'Invalid sender address',
+            ];
+            return $result;
+        }
+        $senderAddress = $sender['address'];
+        $senderObject = Address::fromArray($sender);
+
+        // resolve submit-capable service for sender
+        $service = $this->mailManager->serviceFindByAddress($tenantId, $userId, $senderAddress);
+        if ($service === null || $service->getEnabled() === false) {
+            return [
+                'disposition' => 'error',
+                'error' => [
+                    'type' => 'service_not_found',
+                    'message' => "Service not found for sender '$senderAddress' or service is disabled",
+                ],
+            ];
+        }
+        if ($service instanceof ServiceEntitySubmitInterface === false) {
+            return [
+                'disposition' => 'error',
+                'error' => [
+                    'type' => 'service_not_supported',
+                    'message' => "Service '{$service->identifier()}' does not support entity submission",
+                ],
+            ];
+        }
+
+        $source = null;
+        $properties = $this->buildMessageProperties(
+            service: $service,
+            sender: $senderObject,
+            message: $message,
+            attachments: $attachments,
+            composed: $composed,
+            tenantId: $tenantId,
+            userId: $userId,
+            compositionId: $identifier,
+        );
+
+        $sendResult = $service->entitySubmit($senderObject, $source, $properties);
+
+        if ($sendResult->disposition === EntitySubmitResult::DISPOSITION_ERROR) {
+            return [
+                'identifier' => $identifier,
+                'disposition' => 'error',
+                'error' => [
+                    'type' => 'service_submission_error',
+                    'message' => $sendResult->errorMessage ?? 'An unknown error occurred during submission',
+                ],
+            ];
+        }
+
+        return [
+            'identifier' => $identifier,
+            'disposition' => 'sent'
+        ];
+    }
+
+    private function buildMessageProperties(
+        ServiceEntitySubmitInterface $service,
+        AddressInterface $sender,
+        array $message,
+        array $attachments,
+        array $composed,
+        string $tenantId,
+        string $userId,
+        string $compositionId,
+    ): MessagePropertiesMutableInterface {
+        $properties = $service->entityFresh()->getProperties();
+        $bodyTextPlain = isset($message['body']['text']) ? (string)$message['body']['text'] : '';
+        $bodyTextHtml = isset($message['body']['html']) ? (string)$message['body']['html'] : '';
+
+        $properties->setFrom($sender);
+
+        $to = $this->mapAddresses($message['to'] ?? []);
+        if ($to !== []) {
+            $properties->setTo(...$to);
+        }
+
+        $cc = $this->mapAddresses($message['cc'] ?? []);
+        if ($cc !== []) {
+            $properties->setCc(...$cc);
+        }
+
+        $bcc = $this->mapAddresses($message['bcc'] ?? []);
+        if ($bcc !== []) {
+            $properties->setBcc(...$bcc);
+        }
+
+        $replyTo = $this->mapAddresses($message['replyTo'] ?? []);
+        if ($replyTo !== []) {
+            $properties->setReplyTo(...$replyTo);
+        }
+
+        $properties->setSubject((string)($message['subject'] ?? ''));
+        $properties->setBodyTextPlain($bodyTextPlain);
+        $properties->setBodyTextHtml($bodyTextHtml);
+
+        if (isset($message['flags']) && is_array($message['flags'])) {
+            $properties->setFlags($message['flags']);
+        }
+
+        $attachmentObjects = [];
+        foreach ($attachments as $attachment) {
+            if (!isset($attachment['identifier']) || !is_string($attachment['identifier']) || $attachment['identifier'] === '') {
+                continue;
+            }
+
+            $composedAttachment = $composed['attachments'][$attachment['identifier']] ?? null;
+            if (!is_array($composedAttachment)) {
+                continue;
+            }
+
+            $attachmentObjects[] = MessagePart::fromArray([
+                'partId' => $attachment['identifier'],
+                'blobId' => $attachment['blobId'] ?? $composedAttachment['blobId'] ?? null,
+                'size' => $composedAttachment['size'] ?? null,
+                'name' => $composedAttachment['name'] ?? 'unknown.bin',
+                'type' => $composedAttachment['type'] ?? 'application/octet-stream',
+                'disposition' => (($attachment['inline'] ?? $composedAttachment['inline'] ?? false) === true) ? 'inline' : 'attachment',
+                'content' => $this->compositionStore->attachmentFetchData($tenantId, $userId, $compositionId, $attachment['identifier']),
+                'cid' => $attachment['contentId'] ?? $attachment['cid'] ?? $composedAttachment['contentId'] ?? $composedAttachment['cid'] ?? null,
+            ]);
+        }
+
+        if ($attachmentObjects !== []) {
+            $properties->setAttachments(...$attachmentObjects);
+        }
+
+        return $properties;
+    }
+
+    /**
+     * @param array<int,array|string> $entries
+     * @return array<int,Address>
+     */
+    private function mapAddresses(array $entries): array {
+        $addresses = [];
+
+        foreach ($entries as $entry) {
+            if (is_array($entry)) {
+                $address = Address::fromArray($entry);
+                if ($address->getAddress() !== '') {
+                    $addresses[] = $address;
+                }
+                continue;
+            }
+
+            if (is_string($entry) && $entry !== '') {
+                $address = Address::fromString($entry);
+                if ($address->getAddress() !== '') {
+                    $addresses[] = $address;
+                }
+            }
+        }
+
+        return $addresses;
+    }
+    
+    public function attachmentAdd(string $tenantId, string $userId, string $composition, array ...$attachments): array {
+        $result = [
+            'composition' => $composition,
+            'attachments' => [],
+        ];
+        
+        $composed = $this->compositionStore->compositionFetch($tenantId, $userId, $composition);
+        if ($composed === null) {
+            $result['disposition'] = 'error';
+            $result['error'] = [
+                'type' => 'composition_not_found',
+                'message' => 'Composition not found',
+            ];
+            return $result;
+        }
+
+        foreach ($attachments as $attachment) {
+            if (!isset($attachment['identifier']) || !is_string($attachment['identifier']) || $attachment['identifier'] === '') {
+                $identifier = UUID::v4();
+            } else {
+                $identifier = $attachment['identifier'];
+            }
+
+            $meta = $this->compositionStore->attachmentStageFromBase64(
+                tenantId: $tenantId,
+                userId: $userId,
+                compositionId: $composition,
+                attachmentId: $identifier,
+                name: $attachment['name'] ?? 'unknown.bin',
+                type: $attachment['type'] ?? 'application/octet-stream',
+                data: $attachment['data'] ?? '',
+            );
+            $meta['origin'] = 'upload';
+            $composed['attachments'][$meta['identifier']] = $meta;
+        }
+
+        $this->compositionStore->compositionSave($tenantId, $userId, $composition, $composed);
+        
+        $result['disposition'] = 'added';
+        $result['attachments'] = $composed['attachments'];
+        return $result;
+    }
+
+    public function attachmentRemove(string $tenantId, string $userId, string $composition, string $identifier): array {
+        $result = [
+            'composition' => $composition,
+            'identifier' => $identifier,
+        ];
+        
+        $composed = $this->compositionStore->compositionFetch($tenantId, $userId, $composition);
+        if ($composed === null) {
+            $result['disposition'] = 'error';
+            $result['error'] = [
+                'type' => 'composition_not_found',
+                'message' => 'Composition not found',
+            ];
+            return $result;
+        }
+        if (!isset($composed['attachments'][$identifier])) {
+            $result['disposition'] = 'error';
+            $result['error'] = [
+                'type' => 'attachment_not_found',
+                'message' => 'Attachment not found',
+            ];
+            return $result;
+        }
+
+        unset($composed['attachments'][$identifier]);
+        $this->compositionStore->compositionSave($tenantId, $userId, $composition, $composed);
+
+        $result['disposition'] = 'removed';
+        return $result;
+    }
+}

lib/Controllers/CompositionController.php

@@ -0,0 +1,157 @@
+<?php
+
+declare(strict_types=1);
+
+namespace KTXM\Mail\Controllers;
+
+use InvalidArgumentException;
+use KTXC\Http\Response\JsonResponse;
+use KTXC\Http\Response\Response;
+use KTXC\SessionIdentity;
+use KTXC\SessionTenant;
+use KTXF\Controller\ControllerAbstract;
+use KTXF\Routing\Attributes\AuthenticatedRoute;
+use KTXM\Mail\CompositionManager;
+use Psr\Log\LoggerInterface;
+use Throwable;
+
+final class CompositionController extends ControllerAbstract {
+
+    public function __construct(
+        private readonly SessionTenant $tenantIdentity,
+        private readonly SessionIdentity $userIdentity,
+        private readonly CompositionManager $compositionManager,
+        private readonly LoggerInterface $logger,
+    ) {}
+
+    #[AuthenticatedRoute('/compose/v1', name: 'mail.compose.v1', methods: ['POST'])]
+    public function index(
+        int $version,
+        string $transaction,
+        string|null $operation = null,
+        array|null $data = null,
+    ): Response {
+        $tenantId = $this->tenantIdentity->identifier();
+        $userId = $this->userIdentity->identifier();
+
+        try {
+            if ($operation === null) {
+                throw new InvalidArgumentException('Operation must be provided');
+            }
+
+            $result = match ($operation) {
+                'stage' => $this->stage($tenantId, $userId, $data),
+                'patch' => $this->patch($tenantId, $userId, $data),
+                'discard' => $this->discard($tenantId, $userId, $data),
+                'send' => $this->send($tenantId, $userId, $data),
+                'attachment.add' => $this->attachmentAdd($tenantId, $userId, $data),
+                'attachment.remove' => $this->attachmentRemove($tenantId, $userId, $data),
+                default => throw new InvalidArgumentException('Invalid operation: ' . $operation),
+            };
+
+            return new JsonResponse([
+                'version' => $version,
+                'transaction' => $transaction,
+                'operation' => $operation,
+                'status' => 'success',
+                'data' => $result,
+            ], JsonResponse::HTTP_OK);
+        } catch (Throwable $throwable) {
+            $this->logger->error('Mail draft request failed', ['exception' => $throwable]);
+
+            return new JsonResponse([
+                'version' => $version,
+                'transaction' => $transaction,
+                'operation' => $operation,
+                'status' => 'error',
+                'data' => [
+                    'code' => $throwable->getCode(),
+                    'message' => $throwable->getMessage(),
+                ],
+            ], JsonResponse::HTTP_INTERNAL_SERVER_ERROR);
+        }
+    }
+
+    private function stage(string $tenantId, string $userId, array $data): array {
+        if (!isset($data['identifier']) || !is_string($data['identifier']) || $data['identifier'] === '') {
+            throw new InvalidArgumentException('Invalid parameter: identifier must be a non-empty string');
+        }
+        if (!isset($data['action']) || !is_string($data['action'])) {
+            throw new InvalidArgumentException('Invalid parameter: action must be a string');
+        }
+        if (!in_array($data['action'], ['fresh', 'reply', 'forward'], true)) {
+            throw new InvalidArgumentException('Invalid parameter: action must be one of fresh, reply, forward');
+        }
+        if (!isset($data['sender']) || !is_array($data['sender'])) {
+            throw new InvalidArgumentException('Invalid parameter: sender must be an array');
+        }
+        if (!isset($data['message']) || !is_array($data['message'])) {
+            throw new InvalidArgumentException('Invalid parameter: message must be an array');
+        }
+        if (($data['action'] === 'reply' || $data['action'] === 'forward') && (!isset($data['source']) || !is_string($data['source']) || $data['source'] === '')) {
+            throw new InvalidArgumentException('Invalid parameter: source must be a non-empty string for reply or forward action');
+        }
+
+        return $this->compositionManager->stage($tenantId, $userId, $data['identifier'], $data['action'], $data['sender'], $data['message'], $data['source'] ?? null);
+    }
+
+    private function patch(string $tenantId, string $userId, array $data): array {
+        if (!isset($data['identifier']) || !is_string($data['identifier']) || $data['identifier'] === '') {
+            throw new InvalidArgumentException('Invalid parameter: identifier must be a non-empty string');
+        }
+        if (!isset($data['sender']) || !is_array($data['sender'])) {
+            throw new InvalidArgumentException('Invalid parameter: sender must be an array');
+        }
+        if (!isset($data['message']) || !is_array($data['message'])) {
+            throw new InvalidArgumentException('Invalid parameter: message must be an array');
+        }
+
+        return $this->compositionManager->patch($tenantId, $userId, $data['identifier'], $data);
+    }
+    private function discard(string $tenantId, string $userId, array $data): array {
+        if (!isset($data['identifier']) || !is_string($data['identifier']) || $data['identifier'] === '') {
+            throw new InvalidArgumentException('Invalid parameter: identifier must be a non-empty string');
+        }
+
+        return $this->compositionManager->discard($tenantId, $userId, $data['identifier']);
+    }
+
+    private function send(string $tenantId, string $userId, array $data): array {
+        if (!isset($data['identifier']) || !is_string($data['identifier']) || $data['identifier'] === '') {
+            throw new InvalidArgumentException('Invalid parameter: identifier must be a non-empty string');
+        }
+        if (!isset($data['sender']) || !is_array($data['sender'])) {
+            throw new InvalidArgumentException('Invalid parameter: sender must be an array');
+        }
+        if (!isset($data['message']) || !is_array($data['message'])) {
+            throw new InvalidArgumentException('Invalid parameter: message must be an array');
+        }
+        if (!isset($data['attachments']) || !is_array($data['attachments'])) {
+            throw new InvalidArgumentException('Invalid parameter: attachments must be an array');
+        }
+
+        return $this->compositionManager->send($tenantId, $userId, $data['identifier'], $data['sender'], $data['message'], $data['attachments']);
+    }
+
+    private function attachmentAdd(string $tenantId, string $userId, array $data): array {
+        if (!isset($data['composition']) || !is_string($data['composition']) || $data['composition'] === '') {
+            throw new InvalidArgumentException('Invalid parameter: composition must be a non-empty string');
+        }
+        if (!isset($data['attachments']) || !is_array($data['attachments'])) {
+            throw new InvalidArgumentException('Invalid parameter: attachments must be an array');
+        }
+
+        return $this->compositionManager->attachmentAdd($tenantId, $userId, $data['composition'], ...$data['attachments']);
+    }
+
+    private function attachmentRemove(string $tenantId, string $userId, array $data): array {
+        if (!isset($data['composition']) || !is_string($data['composition']) || $data['composition'] === '') {
+            throw new InvalidArgumentException('Invalid parameter: composition must be a non-empty string');
+        }
+        if (!isset($data['identifier']) || !is_string($data['identifier']) || $data['identifier'] === '') {
+            throw new InvalidArgumentException('Invalid parameter: identifier must be a non-empty string');
+        }
+
+        return $this->compositionManager->attachmentRemove($tenantId, $userId, $data['composition'], $data['identifier']);
+    }
+}

lib/Stores/CompositionStore.php

@@ -0,0 +1,176 @@
+<?php
+
+declare(strict_types=1);
+
+namespace KTXM\Mail\Stores;
+
+use DI\Attribute\Inject;
+use KTXF\Resource\BinaryResource;
+
+final class CompositionStore {
+
+    private const COMPOSITION_FILENAME = 'composition.json';
+
+    private string $storagePath;
+
+    public function __construct(
+        #[Inject('rootDir')] private readonly string $rootDir,
+    ) {
+        $this->storagePath = $this->rootDir . '/var/cache/mail/composer';
+    }
+
+    public function compositionFetch(string $tenantId, string $userId, string $draftId): ?array {
+        $draftDir = $this->draftDir($tenantId, $userId, $draftId);
+        if (!is_dir($draftDir)) {
+            return null;
+        }
+
+        $messagePath = $draftDir . '/' . self::COMPOSITION_FILENAME;
+        if (!file_exists($messagePath)) {
+            return null;
+        }
+
+        $decoded = json_decode((string)file_get_contents($messagePath), true);
+        return is_array($decoded) ? $decoded : null;
+    }
+
+    public function compositionSave(string $tenantId, string $userId, string $draftId, array $snapshot): array {
+        $draftDir = $this->draftDir($tenantId, $userId, $draftId);
+        if (!is_dir($draftDir)) {
+            mkdir($draftDir, 0755, true);
+        }
+
+        file_put_contents($draftDir . '/' . self::COMPOSITION_FILENAME, json_encode($snapshot, JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES));
+        return $snapshot;
+    }
+
+    public function compositionDiscard(string $tenantId, string $userId, string $draftId): bool {
+        $draftDir = $this->draftDir($tenantId, $userId, $draftId);
+        if (!is_dir($draftDir)) {
+            return false;
+        }
+
+        $this->deleteDir($draftDir);
+        return true;
+    }
+
+    public function attachmentStageFromStream(
+        string $tenantId,
+        string $userId,
+        string $compositionId,
+        string $attachmentId,
+        BinaryResource $data,
+    ): array {
+        $attachmentDir = $this->attachmentDir($tenantId, $userId, $compositionId);
+        if (!is_dir($attachmentDir)) {
+            mkdir($attachmentDir, 0755, true);
+        }
+
+        $contentPath = $attachmentDir . '/' . $attachmentId . '.blob';
+        $handle = fopen($contentPath, 'wb');
+        $size = 0;
+
+        foreach ($data->stream() as $chunk) {
+            $chunkString = (string)$chunk;
+            $size += strlen($chunkString);
+            fwrite($handle, $chunkString);
+        }
+
+        fclose($handle);
+
+        $meta = [
+            'identifier' => $attachmentId,
+            'composition' => $compositionId,
+            'name' => $data->filename(),
+            'type' => $data->mimeType(),
+            'size' => $size,
+        ];
+
+        file_put_contents($attachmentDir . '/' . $attachmentId . '.meta', json_encode($meta, JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES));
+
+        return $meta;
+    }
+
+    public function attachmentStageFromBase64(
+        string $tenantId,
+        string $userId,
+        string $compositionId,
+        string $attachmentId,
+        string $name,
+        string $type,
+        string $data,
+    ): array {
+        $decoded = base64_decode($data, true);
+        if ($decoded === false) {
+            throw new \InvalidArgumentException('Attachment payload is not valid base64');
+        }
+
+        $attachmentDir = $this->attachmentDir($tenantId, $userId, $compositionId);
+        if (!is_dir($attachmentDir)) {
+            mkdir($attachmentDir, 0755, true);
+        }
+
+        file_put_contents($attachmentDir . '/' . $attachmentId . '.blob', $decoded);
+
+        $metadata = [
+            'identifier' => $attachmentId,
+            'composition' => $compositionId,
+            'name' => $name,
+            'type' => $type,
+            'size' => strlen($decoded),
+        ];
+
+        file_put_contents($attachmentDir . '/' . $attachmentId . '.meta', json_encode($metadata, JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES));
+
+        return $metadata;
+    }
+
+    public function attachmentFetchData(string $tenantId, string $userId, string $compositionId, string $attachmentId): ?string {
+        $path = $this->attachmentDir($tenantId, $userId, $compositionId) . '/' . $attachmentId . '.blob';
+        if (!file_exists($path)) {
+            return null;
+        }
+
+        return file_get_contents($path) ?: null;
+    }
+
+    public function fetchAttachmentMeta(string $tenantId, string $userId, string $compositionId, string $attachmentId): ?array {
+        $path = $this->attachmentDir($tenantId, $userId, $compositionId) . '/' . $attachmentId . '.meta';
+        if (!file_exists($path)) {
+            return null;
+        }
+
+        $decoded = json_decode((string)file_get_contents($path), true);
+        return is_array($decoded) ? $decoded : null;
+    }
+
+    private function attachmentDir(string $tenantId, string $userId, string $draftId): string {
+        return $this->draftDir($tenantId, $userId, $draftId) . '/attachments';
+    }
+
+    private function draftDir(string $tenantId, string $userId, string $draftId): string {
+        return $this->storagePath . '/' . $tenantId . '/' . $userId . '/' . $draftId;
+    }
+
+    private function deleteDir(string $path): void {
+        if (!is_dir($path)) {
+            return;
+        }
+
+        foreach (scandir($path) ?: [] as $entry) {
+            if ($entry === '.' || $entry === '..') {
+                continue;
+            }
+
+            $child = $path . '/' . $entry;
+            if (is_dir($child)) {
+                $this->deleteDir($child);
+                continue;
+            }
+
+            unlink($child);
+        }
+
+        rmdir($path);
+    }
+}

package.json

@@ -11,7 +11,11 @@
     "dev": "vite build --mode development --config vite.config.ts",
     "watch": "vite build --mode development --watch --config vite.config.ts",
     "typecheck": "vue-tsc --noEmit",
-    "lint": "eslint . --ext .vue,.js,.jsx,.cjs,.mjs,.ts,.tsx,.cts,.mts --fix --ignore-path .gitignore"
+    "lint": "eslint . --ext .vue,.js,.jsx,.cjs,.mjs,.ts,.tsx,.cts,.mts --fix --ignore-path .gitignore",
+    "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": {
     "@tiptap/vue-3": "^3.0.0",
@@ -22,14 +26,18 @@
     "@tiptap/extension-underline": "^3.0.0",
     "vue": "^3.4.0",
     "vue-router": "^5.0.0",
-    "pinia": "^3.0.0",
+    "pinia": "^4.0.0",
     "vuetify": "^4.0.0"
   },
   "devDependencies": {
     "@vitejs/plugin-vue": "^6.0.0",
     "@vue/tsconfig": "^0.9.0",
-    "typescript": "^6.0.0",
+    "typescript": "~6.0.0",
     "vite": "^8.0.0",
-    "vue-tsc": "^3.0.0"
+    "vue-tsc": "^3.0.0",
+    "@vitest/coverage-v8": "^4.1.6",
+    "@vue/test-utils": "^2.4.10",
+    "jsdom": "^29.1.1",
+    "vitest": "^4.1.6"
   }
 }

src/components/CreateFolderDialog.vue

@@ -91,7 +91,7 @@ const handleCancel = () => {
         <div class="mb-4">
           <div class="text-caption text-medium-emphasis">Account</div>
           <div class="text-body-2">
-            {{ service.label || service.primaryAddress || 'Mail Account' }}
+            {{ service.label || service.primaryAddress?.format() || 'Mail Account' }}
           </div>
         </div>
         

src/components/DeleteFolderDialog.vue

@@ -64,7 +64,7 @@ const handleCancel = () => {
         <div class="mb-4">
           <div class="text-caption text-medium-emphasis">Account</div>
           <div class="text-body-2">
-            {{ service.label || service.primaryAddress || 'Mail Account' }}
+            {{ service.label || service.primaryAddress?.format() || 'Mail Account' }}
           </div>
         </div>
 

src/components/FolderPageView.vue

@@ -187,7 +187,7 @@ const getCurrentParentFolder = (service: ServiceObject): CollectionObject | null
             v-bind="activatorProps"
             class="account-header-item"
             :title="group.service.label || 'Mail Account'"
-            :subtitle="group.service.primaryAddress || undefined"
+            :subtitle="group.service.primaryAddress?.address || undefined"
           >
             <template v-slot:prepend>
               <v-icon icon="mdi-email-outline" />
@@ -348,7 +348,7 @@ const getCurrentParentFolder = (service: ServiceObject): CollectionObject | null
         <v-list-item
           class="account-header-item"
           :title="group.service.label || 'Mail Account'"
-          :subtitle="group.service.primaryAddress || undefined"
+          :subtitle="group.service.primaryAddress?.address || undefined"
         >
           <template v-slot:prepend>
             <v-icon icon="mdi-email-outline" />

src/components/FolderSelectionDialog.vue

@@ -1,6 +1,6 @@
 <script setup lang="ts">
 import { computed, ref, watch } from 'vue'
-import { useMailStore } from '@/stores/mailStore'
+import { useMailOperationsStore } from '@/stores/mailOperationsStore'
 import { useCollectionsStore } from '@MailManager/stores/collectionsStore'
 import type { ServiceObject, CollectionObject } from '@MailManager/models'
 import FolderSelectionTreeNode from './FolderSelectionTreeNode.vue'
@@ -30,7 +30,7 @@ const emit = defineEmits<{
   cancel: []
 }>()
 
-const mailStore = useMailStore()
+const mailOperationsStore = useMailOperationsStore()
 const collectionsStore = useCollectionsStore()
 
 const selectedFolderKey = ref<string | null>(null)
@@ -59,9 +59,9 @@ const serviceGroups = computed<ServiceGroup[]>(() => {
 
   return [{
     service,
-    loading: mailStore.isServiceFolderLoading(service.provider, service.identifier),
-    loaded: mailStore.hasServiceFoldersLoaded(service.provider, service.identifier),
-    error: mailStore.getServiceFolderError(service.provider, service.identifier),
+    loading: mailOperationsStore.isServiceFolderLoading(service.provider, service.identifier),
+    loaded: mailOperationsStore.hasServiceFoldersLoaded(service.provider, service.identifier),
+    error: mailOperationsStore.getServiceFolderError(service.provider, service.identifier),
   }]
 })
 
@@ -151,7 +151,7 @@ const handleConfirm = () => {
               <v-list-item
                 class="account-header-item account-header-static"
                 :title="group.service.label || 'Mail Account'"
-                :subtitle="group.service.primaryAddress || undefined"
+                :subtitle="group.service.primaryAddress?.address || undefined"
               >
                 <template #prepend>
                   <v-icon icon="mdi-email-outline" />

src/components/FolderTreeView.vue

@@ -46,7 +46,7 @@ const getServiceFolders = (service: ServiceObject): CollectionObject[] => {
             v-bind="activatorProps"
             class="account-header-item"
             :title="group.service.label || 'Mail Account'"
-            :subtitle="group.service.primaryAddress || undefined"
+            :subtitle="group.service.primaryAddress?.address || undefined"
           >
             <template v-slot:prepend>
               <v-icon icon="mdi-email-outline" />
@@ -116,7 +116,7 @@ const getServiceFolders = (service: ServiceObject): CollectionObject[] => {
         <v-list-item
           class="account-header-item account-header-static"
           :title="group.service.label || 'Mail Account'"
-          :subtitle="group.service.primaryAddress || undefined"
+          :subtitle="group.service.primaryAddress?.address || undefined"
         >
           <template v-slot:prepend>
             <v-icon icon="mdi-email-outline" />

src/components/FolderView.vue

@@ -2,7 +2,7 @@
 import { computed } from 'vue'
 import { storeToRefs } from 'pinia'
 import { useServicesStore } from '@MailManager/stores/servicesStore'
-import { useMailStore } from '@/stores/mailStore'
+import { useMailOperationsStore } from '@/stores/mailOperationsStore'
 import { useMailSettingsStore } from '@/stores/mailSettingsStore'
 import { useMailUiStore } from '@/stores/mailUiStore'
 import FolderTreeView from './FolderTreeView.vue'
@@ -28,7 +28,7 @@ const emit = defineEmits<{
 
 // Stores
 const servicesStore = useServicesStore()
-const mailStore = useMailStore()
+const mailOperationsStore = useMailOperationsStore()
 const mailUiStore = useMailUiStore()
 const mailSettingsStore = useMailSettingsStore()
 const { folderViewMode } = storeToRefs(mailSettingsStore)
@@ -43,9 +43,9 @@ const serviceGroups = computed(() => {
 
     groups.push({
       service,
-      loading: mailStore.isServiceFolderLoading(service.provider, service.identifier),
-      loaded: mailStore.hasServiceFoldersLoaded(service.provider, service.identifier),
-      error: mailStore.getServiceFolderError(service.provider, service.identifier),
+      loading: mailOperationsStore.isServiceFolderLoading(service.provider, service.identifier),
+      loaded: mailOperationsStore.hasServiceFoldersLoaded(service.provider, service.identifier),
+      error: mailOperationsStore.getServiceFolderError(service.provider, service.identifier),
     })
   })
 

src/components/MessageComposer.vue

@@ -8,18 +8,20 @@ import Underline from '@tiptap/extension-underline'
 import TextAlign from '@tiptap/extension-text-align'
 import Placeholder from '@tiptap/extension-placeholder'
 import { EntityObject } from '@MailManager/models/entity'
-import type { CollectionObject } from '@MailManager/models'
-import { useMailStore } from '@/stores/mailStore'
-import type { MessageAddressInterface } from '@MailManager/types/message'
+import type { CollectionObject, MessageAddressObject } from '@MailManager/models'
+import { useMailOperationsStore } from '@/stores/mailOperationsStore'
+import { useMailCompositionStore } from '@/stores/mailCompositionStore'
 import { ComposerMode } from '@/types/composer'
 import ComposerToolbar from '@/components/composer/ComposerToolbar.vue'
+import ComposerSender from '@/components/composer/ComposerSender.vue'
 import ComposerRecipients from '@/components/composer/ComposerRecipients.vue'
+import ComposerAttachments from '@/components/composer/ComposerAttachments.vue'
 import ComposerEditor from '@/components/composer/ComposerEditor.vue'
 
 // Props
 interface Props {
   mode: ComposerMode
-  source?: EntityObject | MessageAddressInterface | null
+  source?: EntityObject | MessageAddressObject | null
   folder?: CollectionObject | null
 }
 
@@ -30,23 +32,53 @@ const emit = defineEmits<{
   close: []
 }>()
 
-const mailStore = useMailStore()
+const mailOperationsStore = useMailOperationsStore()
+const compositionStore = useMailCompositionStore()
 const {
   composerSending: sending,
-  composerSaving: saving,
-  composerLastSaved: lastSaved,
-} = storeToRefs(mailStore)
+} = storeToRefs(mailOperationsStore)
+
+const {
+  activeDraft,
+  saving,
+  stageStatus,
+} = storeToRefs(compositionStore)
 
 // State
-const to = ref<string[]>([])
-const cc = ref<string[]>([])
-const bcc = ref<string[]>([])
-const subject = ref('')
 const showCc = ref(false)
 const showBcc = ref(false)
+const applyingDraftToEditor = ref(false)
 
-// Auto-save timer
-let autoSaveTimer: ReturnType<typeof setTimeout> | null = null
+const sender = computed({
+  get: () => activeDraft.value?.sender ?? null,
+  set: value => {
+    if (value) {
+      compositionStore.updateSender(value)
+    }
+  },
+})
+
+const to = computed({
+  get: () => activeDraft.value?.message.to ?? [],
+  set: value => compositionStore.updateRecipients('to', value),
+})
+
+const cc = computed({
+  get: () => activeDraft.value?.message.cc ?? [],
+  set: value => compositionStore.updateRecipients('cc', value),
+})
+
+const bcc = computed({
+  get: () => activeDraft.value?.message.bcc ?? [],
+  set: value => compositionStore.updateRecipients('bcc', value),
+})
+
+const subject = computed({
+  get: () => activeDraft.value?.message.subject ?? '',
+  set: value => compositionStore.updateSubject(value),
+})
+
+const attachments = computed(() => activeDraft.value?.attachments ?? {})
 
 // Initialize Tiptap editor
 const editor = useEditor({
@@ -71,61 +103,6 @@ const editor = useEditor({
   },
 })
 
-function resetComposerFields() {
-  to.value = []
-  cc.value = []
-  bcc.value = []
-  subject.value = ''
-  showCc.value = false
-  showBcc.value = false
-  editor.value?.commands.setContent('')
-}
-
-function initializeComposerFromProps() {
-  mailStore.resetComposerState()
-  resetComposerFields()
-
-  if (props.mode === ComposerMode.Fresh) {
-    if (props.source && 'address' in props.source) {
-      // If source is an email address, pre-fill the "To" field
-      to.value = [props.source.address]
-    }
-    return
-  }
-
-  if (props.source instanceof EntityObject == false) {
-    return
-  }
-
-  const sourceMessage = props.source.properties
-  const originalSubject = sourceMessage.subject || ''
-  const originalBody = sourceMessage.getHtmlContent() || sourceMessage.getTextContent() || ''
-  const senderName = sourceMessage.from?.label || sourceMessage.from?.address || 'Unknown'
-  const sentAt = sourceMessage.sent || props.source.created || ''
-  const sentLabel = sentAt ? new Date(sentAt).toLocaleString() : 'an unknown time'
-
-  if (props.mode === ComposerMode.Reply) {
-    const fromEmail = sourceMessage.replyTo?.[0]?.address || sourceMessage.from?.address
-    to.value = fromEmail ? [fromEmail] : []
-    subject.value = /^Re:/i.test(originalSubject)
-      ? originalSubject
-      : `Re: ${originalSubject}`
-    editor.value?.commands.setContent(
-      `<p><br></p><p>---------- Original message ---------</p><p>From: ${senderName}</p><p>Date: ${sentLabel}</p><p>Subject: ${originalSubject}</p><blockquote>${originalBody}</blockquote>`,
-    )
-    return
-  }
-
-  if (props.mode === ComposerMode.Forward) {
-    subject.value = /^Fwd:/i.test(originalSubject)
-      ? originalSubject
-      : `Fwd: ${originalSubject}`
-    editor.value?.commands.setContent(
-      `<p><br></p><p>---------- Forwarded message ---------</p><p>From: ${senderName}</p><p>Date: ${sentLabel}</p><p>Subject: ${originalSubject}</p><blockquote>${originalBody}</blockquote>`,
-    )
-  }
-}
-
 watch(
   [() => props.mode, () => props.source, () => editor.value],
   ([, , currentEditor]) => {
@@ -133,7 +110,13 @@ watch(
       return
     }
 
-    initializeComposerFromProps()
+    compositionStore.openDraft(props.mode, props.source)
+    showCc.value = (activeDraft.value?.message.cc.length ?? 0) > 0
+    showBcc.value = (activeDraft.value?.message.bcc.length ?? 0) > 0
+
+    applyingDraftToEditor.value = true
+    currentEditor.commands.setContent(activeDraft.value?.message.body.html || '')
+    applyingDraftToEditor.value = false
   },
   { immediate: true },
 )
@@ -143,97 +126,52 @@ const canSend = computed(() => {
   return to.value.length > 0 && subject.value.trim().length > 0
 })
 
-const saveStatus = computed(() => {
-  if (saving.value) return 'Saving...'
-  if (lastSaved.value) {
-    const seconds = Math.floor((Date.now() - lastSaved.value.getTime()) / 1000)
-    if (seconds < 60) return 'Saved just now'
-    if (seconds < 3600) return `Saved ${Math.floor(seconds / 60)} min ago`
-    return `Saved at ${lastSaved.value.toLocaleTimeString()}`
-  }
-  return ''
-})
-
-// Auto-save function
-const saveDraft = async () => {
-  if (saving.value || sending.value) return
-  if (!props.folder) return
-  
-  // Don't save if completely empty
-  if (to.value.length === 0 && subject.value.trim().length === 0 && !editor.value?.getText().trim()) {
+// Watch editor content changes
+watch(editor, currentEditor => {
+  if (!currentEditor) {
     return
   }
-  
-  try {
-    await mailStore.saveComposerDraft(props.folder, {
-      to: to.value,
-      cc: cc.value,
-      bcc: bcc.value,
-      subject: subject.value,
-      body: {
-        html: editor.value?.getHTML() || '',
-        text: editor.value?.getText() || '',
-      },
+
+  const handleUpdate = () => {
+    if (applyingDraftToEditor.value) {
+      return
+    }
+
+    compositionStore.updateBody({
+      html: currentEditor.getHTML(),
+      text: currentEditor.getText(),
     })
-  } catch (error) {
-    console.error('[Mail][Composer] Failed to save draft:', error)
   }
-}
 
-// Watch for changes and trigger auto-save
-const scheduleAutoSave = () => {
-  if (autoSaveTimer) {
-    clearTimeout(autoSaveTimer)
+  currentEditor.on('update', handleUpdate)
+
+  return () => {
+    currentEditor.off('update', handleUpdate)
   }
-  
-  autoSaveTimer = setTimeout(() => {
-    saveDraft()
-  }, 30000) // 30 seconds
-}
-
-watch([to, cc, bcc, subject], () => {
-  scheduleAutoSave()
-}, { deep: true })
-
-// Watch editor content changes
-if (editor.value) {
-  editor.value.on('update', () => {
-    scheduleAutoSave()
-  })
-}
+})
 
 // Cleanup
 onBeforeUnmount(() => {
-  if (autoSaveTimer) {
-    clearTimeout(autoSaveTimer)
-  }
-  mailStore.resetComposerState()
+  void compositionStore.flushSave()
   editor.value?.destroy()
 })
 
 // Handlers
-const handleClose = () => {
-  mailStore.resetComposerState()
+const handleClose = async () => {
+  await compositionStore.closeDraft()
   emit('close')
 }
 
 const handleSend = async () => {
-  if (!canSend.value || sending.value) return
+  await compositionStore.sendDraft()
+}
 
-  try {
-    await mailStore.sendComposerMessage({
-      to: to.value,
-      cc: cc.value,
-      bcc: bcc.value,
-      subject: subject.value,
-      body: {
-        html: editor.value?.getHTML() || '',
-        text: editor.value?.getText() || '',
-      },
-    })
-  } catch (error) {
-    console.error('[Mail][Composer] Failed to send message:', error)
-  }
+const handleAttach = async (files: File[]) => {
+  await compositionStore.addAttachments(files)
+}
+
+const handleDetach = async (identifier: string) => {
+  await compositionStore.removeAttachment(identifier)
 }
 
 const toggleCc = () => {
@@ -257,11 +195,6 @@ const setLink = () => {
   }
 }
 const removeLink = () => editor.value?.chain().focus().unsetLink().run()
-
-const isActive = (name: string, attrs?: any) => {
-  return editor.value?.isActive(name, attrs) || false
-}
-
 const toggleLink = () => {
   if (isActive('link')) {
     removeLink()
@@ -270,13 +203,16 @@ const toggleLink = () => {
 
   setLink()
 }
+const isActive = (name: string, attrs?: any) => {
+  return editor.value?.isActive(name, attrs) || false
+}
 </script>
 
 <template>
   <div class="message-composer">
     <ComposerToolbar
       :mode="mode"
-      :save-status="saveStatus"
+      :status="stageStatus"
       :can-send="canSend"
       :sending="sending"
       @close="handleClose"
@@ -284,6 +220,11 @@ const toggleLink = () => {
     />
 
     <div class="composer-content">
+      <ComposerSender
+        v-model="sender"
+        :options="compositionStore.senderIdentities"
+      />
+
       <ComposerRecipients
         :to="to"
         :cc="cc"
@@ -301,6 +242,14 @@ const toggleLink = () => {
 
       <v-divider />
 
+      <ComposerAttachments
+        v-if="Object.keys(attachments).length > 0"
+        :attachments="attachments"
+        @remove="handleDetach"
+      />
+
+      <v-divider v-if="Object.keys(attachments).length > 0" />
+
       <ComposerEditor
         :editor="editor"
         :is-bold-active="isActive('bold')"
@@ -315,6 +264,7 @@ const toggleLink = () => {
         @bullet-list="toggleBulletList"
         @ordered-list="toggleOrderedList"
         @link="toggleLink"
+        @attach="handleAttach"
       />
     </div>
   </div>
@@ -339,4 +289,5 @@ const toggleLink = () => {
   flex-direction: column;
   overflow: hidden;
 }
+
 </style>

src/components/MessageList.vue

@@ -1,8 +1,10 @@
 <script setup lang="ts">
 import { computed, onBeforeUnmount, ref } from 'vue'
+import { storeToRefs } from 'pinia'
 import type { EntityIdentifier } from '@MailManager/types/common'
 import type { EntityObject } from '@MailManager/models'
 import type { CollectionObject } from '@MailManager/models/collection'
+import { messageListDensityConfig, useMailSettingsStore } from '@/stores/mailSettingsStore'
 import RecipientDetails from '@/components/common/RecipientDetails.vue'
 import MessageListItemMenu from '@/components/MessageListItemMenu.vue'
 
@@ -39,6 +41,10 @@ const emit = defineEmits<{
   selectionFlag: [flag: string, value: boolean]
 }>()
 
+const mailSettingsStore = useMailSettingsStore()
+const { messageListDensity } = storeToRefs(mailSettingsStore)
+const densityConfig = computed(() => messageListDensityConfig[messageListDensity.value])
+
 const longPressTimer = ref<number | null>(null)
 const longPressActivated = ref(false)
 const suppressNextClick = ref(false)
@@ -326,7 +332,7 @@ onBeforeUnmount(() => {
             icon="mdi-email-open-outline"
             variant="text"
             :disabled="selectionCount === 0"
-            @click="handleFlag('read', true)"
+            @click="handleFlag('seen', true)"
           >
             <v-icon>mdi-email-open-outline</v-icon>
             <v-tooltip activator="parent" location="bottom">Mark as Read</v-tooltip>
@@ -336,7 +342,7 @@ onBeforeUnmount(() => {
             icon="mdi-email-outline"
             variant="text"
             :disabled="selectionCount === 0"
-            @click="handleFlag('read', false)"
+            @click="handleFlag('seen', false)"
           >
             <v-icon>mdi-email-outline</v-icon>
             <v-tooltip activator="parent" location="bottom">Mark as Unread</v-tooltip>
@@ -377,7 +383,7 @@ onBeforeUnmount(() => {
     <v-virtual-scroll
       v-else
       :items="sortedMessages"
-      :item-height="80"
+      :item-height="densityConfig.itemHeight"
       class="message-virtual-scroll"
     >
       <template v-slot:default="{ item: message }">
@@ -397,7 +403,7 @@ onBeforeUnmount(() => {
           @touchend="handleTouchEnd"
           @touchcancel="handleTouchEnd"
           @touchmove="handleTouchMove"
-          lines="three"
+          :lines="densityConfig.lines"
         >
           <template v-slot:prepend>
             <div class="message-item-prepend">
@@ -419,7 +425,7 @@ onBeforeUnmount(() => {
           </template>
 
           <v-list-item-title class="d-flex align-center">
-            <span class="flex-grow-1 text-truncate">
+            <span class="message-sender text-truncate">
               <RecipientDetails
                 :address="message.properties.from"
                 @clicked="handleRecipientClick(message)"
@@ -429,16 +435,22 @@ onBeforeUnmount(() => {
                 </template>
               </RecipientDetails>
             </span>
-            <span class="text-caption text-medium-emphasis ml-2">
+            <span
+              v-if="!densityConfig.showSubjectLine"
+              class="message-inline-subject text-medium-emphasis text-truncate ml-2"
+            >
+              {{ message.properties.subject || '(No subject)' }}
+            </span>
+            <span class="message-date text-caption text-medium-emphasis ml-2">
               {{ formatDate(timeStamp(message)) }}
             </span>
           </v-list-item-title>
 
-          <v-list-item-subtitle class="text-truncate">
+          <v-list-item-subtitle v-if="densityConfig.showSubjectLine" class="text-truncate">
             {{ message.properties.subject || '(No subject)' }}
           </v-list-item-subtitle>
 
-          <v-list-item-subtitle class="text-caption text-truncate">
+          <v-list-item-subtitle v-if="densityConfig.showThirdLine" class="text-caption text-truncate">
             {{ '' }}
           </v-list-item-subtitle>
 
@@ -632,6 +644,21 @@ onBeforeUnmount(() => {
   background-color: rgba(var(--v-theme-primary), 0.14);
 }
 
+.message-sender {
+  flex: 0 1 auto;
+  min-width: 0;
+}
+
+.message-inline-subject {
+  flex: 1 1 auto;
+  min-width: 0;
+}
+
+.message-date {
+  flex-shrink: 0;
+  margin-left: auto;
+}
+
 .message-person-link {
   display: inline-block;
   max-width: 100%;

src/components/MessageListItemMenu.vue

@@ -98,7 +98,7 @@ const handleDelete = () => {
     <v-list class="message-item-menu" density="compact" min-width="220">
       <v-list-item
         :prepend-icon="isRead ? 'mdi-email-outline' : 'mdi-email-open-outline'"
-        @click="handleFlag('read', !isRead)"
+        @click="handleFlag('seen', !isRead)"
       >
         <v-list-item-title>
           {{ isRead ? 'Mark as unread' : 'Mark as read' }}

src/components/MessageReader.vue

@@ -1,9 +1,11 @@
 <script setup lang="ts">
 import { computed, ref, watch } from 'vue'
 import { useUser } from '@KTXC'
+import { useMailUiStore } from '@/stores/mailUiStore'
 import type { EntityObject, MessageObject } from '@MailManager/models'
 import { SecurityLevel } from '@/utile/emailSanitizer'
-import { useMailStore } from '@/stores/mailStore'
+import { mediaViewerCanDisplay, mediaViewerComponent } from '@/services/mediaViewer'
+import type { MediaViewerItem } from '@/types/mediaViewer'
 import ReaderEmpty from './reader/ReaderEmpty.vue'
 import ReaderToolbar from './reader/ReaderToolbar.vue'
 import ReaderHeader from './reader/ReaderHeader.vue'
@@ -26,12 +28,16 @@ const emit = defineEmits<{
 
 // User settings
 const { getSetting } = useUser()
-const mailStore = useMailStore()
+const mailUiStore = useMailUiStore()
 
-// Per-message overrides
+// Security overrides
 const allowImages = ref(false)
 const overrideSecurityLevel = ref<SecurityLevel | null>(null)
 
+// Viewer state
+const showViewer = ref(false)
+const viewerIndex = ref(0)
+
 // Computed
 const message = computed<MessageObject | null>(() => {
   return props.entity?.properties ?? null
@@ -55,12 +61,35 @@ const effectiveSecurityLevel = computed(() => {
   return overrideSecurityLevel.value ?? securityLevel.value
 })
 
+// Preview state
+const previewDialog = computed(() => mediaViewerComponent('dialog'))
+const previewItems = computed<MediaViewerItem[]>(() => {
+  const attachments = message.value?.attachments ?? []
+  const items: MediaViewerItem[] = []
+  attachments.forEach((attachment, index) => {
+    if (!mediaViewerCanDisplay(attachment.type)) return
+    items.push({
+      id: attachment.partId || attachment.blobId || attachment.cid || `att-${index}`,
+      title: attachment.name || 'Attachment',
+      mime: attachment.type || '',
+      size: attachment.size ?? null,
+      meta: { index, attachment },
+    })
+  })
+  return items
+})
+
 // Reset overrides when message changes
 watch(() => props.entity, () => {
   allowImages.value = allowImagesDefault.value
   overrideSecurityLevel.value = null
 })
 
+// Close the viewer when switching messages.
+watch(() => props.entity, () => {
+  showViewer.value = false
+})
+
 // Toggle images for current message only
 const toggleImages = () => {
   allowImages.value = !allowImages.value
@@ -101,7 +130,7 @@ const handleDownload = async (partIndex?: number) => {
     return
   }
 
-  await mailStore.downloadMessage(props.entity, partIndex)
+  await mailUiStore.downloadMessage(props.entity, partIndex)
 }
 
 const handleFlag = () => {
@@ -113,6 +142,22 @@ const handleFlag = () => {
 const handleCompose = () => {
   emit('compose')
 }
+
+const handlePreview = (index: number) => {
+  const pos = previewItems.value.findIndex(item => item.meta.index === index)
+  if (pos < 0) return
+  viewerIndex.value = pos
+  showViewer.value = true
+}
+
+const handleViewerRetrieve = (item: MediaViewerItem): Promise<Blob> => {
+  if (!props.entity) return Promise.reject(new Error('No message selected'))
+  return mailUiStore.attachmentBlob(props.entity, item.meta.attachment)
+}
+
+const handleViewerDownload = (item: MediaViewerItem) => {
+  if (props.entity) mailUiStore.downloadMessage(props.entity, item.meta.index)
+}
 </script>
 
 <template>
@@ -135,7 +180,7 @@ const handleCompose = () => {
         @move="handleMove"
         @delete="handleDelete"
         @flag="handleFlag"
-        @download="handleDownload()"
+        @download="handleDownload"
         @toggle-images="toggleImages"
         @set-security-level="setSecurityLevel"
       />
@@ -144,7 +189,8 @@ const handleCompose = () => {
       <div class="message-content">
         <ReaderHeader
           :entity="props.entity"
-          @download-attachment="handleDownload"
+          @download="handleDownload"
+          @preview="handlePreview"
         />
         
         <v-divider />
@@ -155,6 +201,19 @@ const handleCompose = () => {
           :allow-images="allowImages"
         />
       </div>
+
+      <!-- Inline attachment viewer (provided by the media_viewer module) -->
+      <component
+        :is="previewDialog"
+        v-if="previewDialog"
+        v-model="showViewer"
+        :items="previewItems"
+        :index="viewerIndex"
+        :source="handleViewerRetrieve"
+        :download="handleViewerDownload"
+        :navigation="true"
+        @update:index="viewerIndex = $event"
+      />
     </template>
   </div>
 </template>

src/components/RenameFolderDialog.vue

@@ -91,7 +91,7 @@ const handleCancel = () => {
         <div class="mb-4">
           <div class="text-caption text-medium-emphasis">Account</div>
           <div class="text-body-2">
-            {{ service.label || service.primaryAddress || 'Mail Account' }}
+            {{ service.label || service.primaryAddress?.format() || 'Mail Account' }}
           </div>
         </div>
 

src/components/Sidebar.vue

@@ -0,0 +1,75 @@
+<script setup lang="ts">
+import { computed } from 'vue'
+import { storeToRefs } from 'pinia'
+import { useDisplay } from 'vuetify'
+import { useMailUiStore } from '@/stores/mailUiStore'
+import FolderView from '@/components/FolderView.vue'
+import type { CollectionObject } from '@MailManager/models/collection'
+
+const display = useDisplay()
+const isMobile = computed(() => display.mdAndDown.value)
+
+const mailUiStore = useMailUiStore()
+const { sidebarVisible, selectedFolder } = storeToRefs(mailUiStore)
+
+const handleCompose = () => mailUiStore.openComposer()
+
+const handleFolderSelect = (folder: CollectionObject) => mailUiStore.selectFolder(folder)
+
+const handleSettingsOpen = () => mailUiStore.settingsOpen()
+</script>
+
+<template>
+  <v-navigation-drawer
+    v-model="sidebarVisible"
+    contained
+    :permanent="sidebarVisible && !isMobile"
+    :temporary="isMobile"
+    width="280"
+    class="mail-sidebar"
+  >
+    <div class="pa-3 pb-0">
+      <!-- Primary action -->
+      <v-btn
+        block
+        color="primary"
+        variant="tonal"
+        prepend-icon="mdi-pencil"
+        class="justify-start"
+        @click="handleCompose"
+      >
+        Compose
+      </v-btn>
+    </div>
+
+    <!-- Folders -->
+    <FolderView
+      :selected-folder="selectedFolder"
+      @select="handleFolderSelect"
+    />
+
+    <!-- Pinned utility footer -->
+    <template #append>
+      <v-divider />
+      <div class="pa-2">
+        <v-btn
+          block
+          variant="text"
+          size="small"
+          prepend-icon="mdi-cog"
+          class="justify-start text-medium-emphasis"
+          @click="handleSettingsOpen"
+        >
+          Settings
+        </v-btn>
+      </div>
+    </template>
+  </v-navigation-drawer>
+</template>
+
+<style scoped>
+.mail-sidebar {
+  border-right: 1px solid rgb(var(--v-border-color));
+  overflow-y: auto;
+}
+</style>

src/components/common/RecipientDetails.vue

@@ -1,6 +1,5 @@
 <script setup lang="ts">
 import { computed } from 'vue'
-import { useSnackbar } from '@KTXC'
 import type { MessageAddressInterface } from '@MailManager/types/message'
 import { useMailUiStore } from '@/stores/mailUiStore'
 import { ComposerMode } from '@/types/composer'
@@ -17,7 +16,6 @@ const emit = defineEmits<{
 }>()
 
 const mailUiStore = useMailUiStore()
-const { showSnackbar } = useSnackbar()
 
 const recipientLabel = computed(() => props.address?.label?.trim() || '')
 const recipientAddress = computed(() => props.address?.address?.trim() || '')
@@ -32,7 +30,7 @@ const formattedAddress = computed(() => {
 const hasEmail = computed(() => recipientAddress.value.length > 0)
 
 const showCopyResult = (message: string, color: 'success' | 'error') => {
-  showSnackbar({ message, color })
+  mailUiStore.notify(message, color)
 }
 
 const copy = async (value: string, label: string) => {

src/components/composer/ComposerAttachments.vue

@@ -0,0 +1,43 @@
+<script setup lang="ts">
+import type { ComposerDraftAttachment } from '@/types/composer'
+import { formatFileSize } from '@/utile/format'
+
+interface Props {
+  attachments: Record<string, ComposerDraftAttachment>
+}
+
+defineProps<Props>()
+
+defineEmits<{
+  remove: [identifier: string]
+}>()
+</script>
+
+<template>
+  <div class="composer-attachments px-4 py-3">
+    <div class="text-caption text-medium-emphasis mb-2">Attachments</div>
+    <div class="composer-attachments-list">
+      <v-chip
+        v-for="attachment in Object.values(attachments)"
+        :key="attachment.identifier"
+        size="small"
+        closable
+        class="mr-2 mb-2"
+        @click:close="$emit('remove', attachment.identifier)"
+      >
+        {{ attachment.name }} ({{ formatFileSize(attachment.size) }})
+      </v-chip>
+    </div>
+  </div>
+</template>
+
+<style scoped lang="scss">
+.composer-attachments {
+  border-bottom: 1px solid rgb(var(--v-border-color));
+}
+
+.composer-attachments-list {
+  display: flex;
+  flex-wrap: wrap;
+}
+</style>

src/components/composer/ComposerEditor.vue

@@ -1,4 +1,5 @@
 <script setup lang="ts">
+import { ref } from 'vue'
 import type { PropType } from 'vue'
 import { EditorContent, type Editor } from '@tiptap/vue-3'
 
@@ -33,14 +34,32 @@ defineProps({
   },
 })
 
-defineEmits<{
+const emit = defineEmits<{
   bold: []
   italic: []
   underline: []
   bulletList: []
   orderedList: []
   link: []
+  attach: [files: File[]]
 }>()
+
+const fileInput = ref<HTMLInputElement | null>(null)
+
+function openFilePicker() {
+  fileInput.value?.click()
+}
+
+function handleFileChange(event: Event) {
+  const input = event.target as HTMLInputElement | null
+  const files = input?.files ? Array.from(input.files) : []
+  if (files.length > 0) {
+    emit('attach', files)
+  }
+  if (input) {
+    input.value = ''
+  }
+}
 </script>
 
 <template>
@@ -111,7 +130,15 @@ defineEmits<{
 
     <v-spacer />
 
-    <v-btn icon size="small">
+    <input
+      ref="fileInput"
+      type="file"
+      multiple
+      class="sr-only"
+      @change="handleFileChange"
+    >
+
+    <v-btn icon size="small" @click="openFilePicker">
       <v-icon>mdi-paperclip</v-icon>
       <v-tooltip activator="parent" location="bottom">Attach Files</v-tooltip>
     </v-btn>
@@ -120,7 +147,7 @@ defineEmits<{
   <v-divider />
 
   <div class="editor-container">
-    <EditorContent :editor="editor" />
+    <EditorContent :editor="editor ?? undefined" />
   </div>
 </template>
 
@@ -136,6 +163,10 @@ defineEmits<{
   background-color: rgb(var(--v-theme-background));
 }
 
+.sr-only {
+  display: none;
+}
+
 .v-btn--active {
   background-color: rgba(var(--v-theme-primary), 0.12);
   color: rgb(var(--v-theme-primary));

src/components/composer/ComposerRecipients.vue

@@ -1,8 +1,11 @@
 <script setup lang="ts">
+import { useRecipientLookupStore } from '@/stores/mailRecipientsStore'
+import type { MessageAddressInterface } from '@MailManager/types/message'
+
 interface Props {
-  to: string[]
-  cc: string[]
-  bcc: string[]
+  to: MessageAddressInterface[]
+  cc: MessageAddressInterface[]
+  bcc: MessageAddressInterface[]
   subject: string
   showCc: boolean
   showBcc: boolean
@@ -10,14 +13,34 @@ interface Props {
 
 defineProps<Props>()
 
-defineEmits<{
-  'update:to': [value: string[]]
-  'update:cc': [value: string[]]
-  'update:bcc': [value: string[]]
+const emit = defineEmits<{
+  'update:to': [value: MessageAddressInterface[]]
+  'update:cc': [value: MessageAddressInterface[]]
+  'update:bcc': [value: MessageAddressInterface[]]
   'update:subject': [value: string]
   'toggle:cc': []
   'toggle:bcc': []
 }>()
+
+const recipientLookup = useRecipientLookupStore()
+
+/**
+ * Normalize combobox entries: typed strings become bare address objects;
+ * picked suggestions are already MessageAddressInterface and pass through.
+ */
+function normalize(entries: (MessageAddressInterface | string)[]): MessageAddressInterface[] {
+  return entries.map(entry =>
+    typeof entry === 'string' ? { address: entry } : entry,
+  )
+}
+
+function chipLabel(item: MessageAddressInterface): string {
+  return item.label ? `${item.label} <${item.address}>` : item.address
+}
+
+function itemTitle(item: MessageAddressInterface): string {
+  return item.label || item.address
+}
 </script>
 
 <template>
@@ -28,11 +51,23 @@ defineEmits<{
       chips
       multiple
       closable-chips
+      return-object
+      no-filter
       variant="outlined"
       density="compact"
       class="mb-2"
-      @update:model-value="$emit('update:to', $event)"
+      :items="recipientLookup.suggestions"
+      :loading="recipientLookup.searching"
+      :item-title="itemTitle"
+      @update:search="recipientLookup.search($event)"
+      @update:model-value="emit('update:to', normalize($event))"
     >
+      <template #chip="{ item, props: chipProps }">
+        <v-chip v-bind="chipProps">{{ chipLabel(item) }}</v-chip>
+      </template>
+      <template #item="{ item, props: itemProps }">
+        <v-list-item v-bind="itemProps" :subtitle="item.label ? item.address : undefined" />
+      </template>
       <template #append-inner>
         <v-btn
           size="x-small"
@@ -59,11 +94,24 @@ defineEmits<{
       chips
       multiple
       closable-chips
+      return-object
+      no-filter
       variant="outlined"
       density="compact"
       class="mb-2"
-      @update:model-value="$emit('update:cc', $event)"
-    />
+      :items="recipientLookup.suggestions"
+      :loading="recipientLookup.searching"
+      :item-title="itemTitle"
+      @update:search="recipientLookup.search($event)"
+      @update:model-value="emit('update:cc', normalize($event))"
+    >
+      <template #chip="{ item, props: chipProps }">
+        <v-chip v-bind="chipProps">{{ chipLabel(item) }}</v-chip>
+      </template>
+      <template #item="{ item, props: itemProps }">
+        <v-list-item v-bind="itemProps" :subtitle="item.label ? item.address : undefined" />
+      </template>
+    </v-combobox>
 
     <v-combobox
       v-if="showBcc"
@@ -72,11 +120,24 @@ defineEmits<{
       chips
       multiple
       closable-chips
+      return-object
+      no-filter
       variant="outlined"
       density="compact"
       class="mb-2"
-      @update:model-value="$emit('update:bcc', $event)"
-    />
+      :items="recipientLookup.suggestions"
+      :loading="recipientLookup.searching"
+      :item-title="itemTitle"
+      @update:search="recipientLookup.search($event)"
+      @update:model-value="emit('update:bcc', normalize($event))"
+    >
+      <template #chip="{ item, props: chipProps }">
+        <v-chip v-bind="chipProps">{{ chipLabel(item) }}</v-chip>
+      </template>
+      <template #item="{ item, props: itemProps }">
+        <v-list-item v-bind="itemProps" :subtitle="item.label ? item.address : undefined" />
+      </template>
+    </v-combobox>
 
     <v-text-field
       :model-value="subject"

src/components/composer/ComposerSender.vue

@@ -0,0 +1,87 @@
+<script setup lang="ts">
+import type { ComposerSenderIdentity } from '@/types/composer';
+import { computed } from 'vue'
+
+interface Props {
+  modelValue: ComposerSenderIdentity | null
+  options: ComposerSenderIdentity[]
+}
+
+const props = defineProps<Props>()
+
+const emit = defineEmits<{
+  'update:modelValue': [value: ComposerSenderIdentity | null]
+}>()
+
+type SenderListItem = {
+  title: string
+  value: string
+}
+
+const items = computed<SenderListItem[]>(() => {
+  return props.options.map(option => ({
+    title: formatSenderLabel(option.label, option.address),
+    value: option.address,
+  }))
+})
+
+const selectedValue = computed(() => props.modelValue?.address ?? null)
+
+const singleOptionLabel = computed(() => {
+  const onlyOption = props.options[0]
+  return onlyOption ? formatSenderLabel(onlyOption.label, onlyOption.address) : ''
+})
+
+const errorMessages = computed(() => {
+  if (props.options.length === 0) {
+    return ['No send-capable account is available.']
+  }
+
+  return []
+})
+
+function handleUpdate(value: string | null) {
+  const match = value ? props.options.find(o => o.address === value) ?? null : null
+  emit('update:modelValue', match)
+}
+
+function formatSenderLabel(label: string | null | undefined, address: string): string {
+  return label ? `${label} <${address}>` : address
+}
+</script>
+
+<template>
+  <div class="composer-sender px-4 pt-4 pb-0">
+    <v-text-field
+      v-if="options.length === 1"
+      :model-value="singleOptionLabel"
+      label="From"
+      variant="outlined"
+      density="compact"
+      readonly
+      class="mb-2"
+    />
+
+    <v-select
+      v-else
+      :model-value="selectedValue"
+      :items="items"
+      item-title="title"
+      item-value="value"
+      label="From"
+      variant="outlined"
+      density="compact"
+      :error="errorMessages.length > 0"
+      :error-messages="errorMessages"
+      :disabled="options.length === 0"
+      class="mb-2"
+      @update:model-value="handleUpdate"
+    />
+  </div>
+</template>
+
+<style scoped lang="scss">
+.composer-sender {
+  flex-shrink: 0;
+}
+</style>

src/components/composer/ComposerToolbar.vue

@@ -3,7 +3,7 @@ import { ComposerMode } from '@/types/composer'
 
 interface Props {
   mode: ComposerMode
-  saveStatus: string
+  status: string
   canSend: boolean
   sending: boolean
 }
@@ -33,8 +33,8 @@ defineEmits<{
 
     <v-spacer />
 
-    <span v-if="saveStatus" class="text-caption text-medium-emphasis mr-4">
-      {{ saveStatus }}
+    <span v-if="status" class="text-caption text-medium-emphasis mr-4">
+      {{ status }}
     </span>
 
     <v-btn

src/components/reader/ReaderHeader.vue

@@ -1,7 +1,19 @@
 <script setup lang="ts">
 import { computed } from 'vue'
 import RecipientDetails from '@/components/common/RecipientDetails.vue'
+import { formatFileSize } from '@/utile/format'
+import { mediaViewerCanDisplay, mediaViewerComponent } from '@/services/mediaViewer'
+import { useMailUiStore } from '@/stores/mailUiStore'
 import type { EntityObject } from '@MailManager/models';
+import type { MessagePartInterface } from '@MailManager/types/message';
+
+interface AttachmentItem {
+  id: string
+  title: string
+  mime: string
+  size?: number | null
+  meta: { index: number; attachment: MessagePartInterface }
+}
 
 interface Props {
   entity: EntityObject | null
@@ -10,9 +22,13 @@ interface Props {
 const props = defineProps<Props>()
 
 const emit = defineEmits<{
-  downloadAttachment: [index: number]
+  download: [index: number]
+  preview: [index: number]
 }>()
 
+const mailUiStore = useMailUiStore()
+const previewPopover = computed(() => mediaViewerComponent('popover'))
+
 const message = computed(() => {
   return props.entity?.properties ?? null
 })
@@ -21,6 +37,33 @@ const randomKey = computed(() => {
   return Math.random().toString(36).substring(2, 15)
 })
 
+const attachmentItems = computed<AttachmentItem[]>(() =>
+  (message.value?.attachments ?? []).map((attachment, index) => ({
+    id: attachment.partId || attachment.blobId || attachment.cid || `att-${index}`,
+    title: attachment.name || 'Attachment',
+    mime: attachment.type || '',
+    size: attachment.size ?? null,
+    meta: { index, attachment },
+  })),
+)
+
+const isPreviewable = (attachment: MessagePartInterface): boolean => {
+  return mediaViewerCanDisplay(attachment.type)
+}
+
+const handleAttachmentClick = (attachment: MessagePartInterface, index: number): void => {
+  if (isPreviewable(attachment)) {
+    emit('preview', index)
+  } else {
+    emit('download', index)
+  }
+}
+
+const handleViewerRetrieve = (item: AttachmentItem): Promise<Blob> => {
+  if (!props.entity) return Promise.reject(new Error('No message selected'))
+  return mailUiStore.attachmentBlob(props.entity, item.meta.attachment)
+}
+
 // Format date for display
 const formatDate = (date: Date | string | null | undefined): string => {
   if (!date) return ''
@@ -36,19 +79,6 @@ const formatDate = (date: Date | string | null | undefined): string => {
     hour12: true
   })
 }
-
-// Format file size for display
-const formatFileSize = (bytes: number | undefined): string => {
-  if (!bytes) return ''
-  
-  if (bytes < 1024) return bytes + ' B'
-  if (bytes < 1024 * 1024) return (bytes / 1024).toFixed(1) + ' KB'
-  return (bytes / (1024 * 1024)).toFixed(1) + ' MB'
-}
-
-const download = async (index: number): Promise<void> => {
-  emit('downloadAttachment', index)
-}
 </script>
 
 <template>
@@ -109,21 +139,31 @@ const download = async (index: number): Promise<void> => {
       <div class="d-flex flex-wrap gap-2">
         <div
           v-for="(attachment, index) in message?.attachments"
-          :key="randomKey"
+          :key="attachment.partId || attachment.blobId || attachment.cid || index"
           class="attachment-item"
         >
           <v-chip
-            prepend-icon="mdi-paperclip"
+            :prepend-icon="isPreviewable(attachment) ? 'mdi-eye-outline' : 'mdi-paperclip'"
             size="small"
             variant="outlined"
             class="attachment-chip"
-            @click="download(index)"
+            :title="isPreviewable(attachment) ? 'Preview' : 'Download'"
+            @click="handleAttachmentClick(attachment, index)"
           >
             <span class="attachment-name">{{ attachment.name || 'Untitled' }}</span>
-            <span v-if="attachment.size" class="text-caption text-medium-emphasis ml-1">
-              ({{ formatFileSize(attachment.size ?? undefined) }})
+            <span v-if="attachment.size != null" class="text-caption text-medium-emphasis ml-1">
+              ({{ formatFileSize(attachment.size) }})
             </span>
           </v-chip>
+
+          <!-- Hover preview (provided by the media_viewer module) -->
+          <component
+            :is="previewPopover"
+            v-if="previewPopover && isPreviewable(attachment)"
+            :item="attachmentItems[index]"
+            :source="handleViewerRetrieve"
+            @expand="emit('preview', index)"
+          />
         </div>
       </div>
     </div>

src/components/settings/AccountsSettings.vue

@@ -48,7 +48,7 @@ const handleAccountSaved = async () => {
         </template>
 
         <v-list-item-title>{{ service.label || 'Unnamed Account' }}</v-list-item-title>
-        <v-list-item-subtitle>{{ service.primaryAddress || service.identifier }}</v-list-item-subtitle>
+        <v-list-item-subtitle>{{ service.primaryAddress?.address || service.identifier }}</v-list-item-subtitle>
 
         <template #append>
           <v-btn

src/components/settings/DisplaySettings.vue

@@ -1,9 +1,14 @@
 <script setup lang="ts">
 import { storeToRefs } from 'pinia'
-import { folderViewModeOptions, useMailSettingsStore } from '@/stores/mailSettingsStore'
+import {
+  folderViewModeOptions,
+  messageListDensityOptions,
+  messageListWidthOptions,
+  useMailSettingsStore,
+} from '@/stores/mailSettingsStore'
 
 const mailSettingsStore = useMailSettingsStore()
-const { folderViewMode } = storeToRefs(mailSettingsStore)
+const { folderViewMode, messageListDensity, messageListWidth } = storeToRefs(mailSettingsStore)
 </script>
 
 <template>
@@ -26,6 +31,38 @@ const { folderViewMode } = storeToRefs(mailSettingsStore)
           />
         </template>
       </v-list-item>
+
+      <v-list-item>
+        <v-list-item-title>Message list density</v-list-item-title>
+        <v-list-item-subtitle>Control row height and how much detail is shown</v-list-item-subtitle>
+        <template #append>
+          <v-select
+            v-model="messageListDensity"
+            :items="messageListDensityOptions"
+            item-value="value"
+            item-title="title"
+            density="compact"
+            variant="outlined"
+            style="width: 150px"
+          />
+        </template>
+      </v-list-item>
+
+      <v-list-item>
+        <v-list-item-title>Message list width</v-list-item-title>
+        <v-list-item-subtitle>Set how wide the message list panel is</v-list-item-subtitle>
+        <template #append>
+          <v-select
+            v-model="messageListWidth"
+            :items="messageListWidthOptions"
+            item-value="value"
+            item-title="title"
+            density="compact"
+            variant="outlined"
+            style="width: 150px"
+          />
+        </template>
+      </v-list-item>
     </v-list>
   </div>
 </template>

src/pages/Main.vue

@@ -1,10 +1,11 @@
 <script setup lang="ts">
-import { computed, onMounted, unref } from 'vue'
+import { computed, onMounted, ref, unref } from 'vue'
 import { storeToRefs } from 'pinia'
 import { useDisplay } from 'vuetify'
 import { useModuleStore } from '@KTXC'
 import { useCollectionsStore } from '@MailManager/stores/collectionsStore'
-import { useMailStore } from '@/stores/mailStore'
+import { useMailOperationsStore } from '@/stores/mailOperationsStore'
+import { useMailSettingsStore } from '@/stores/mailSettingsStore'
 import { useMailUiStore } from '@/stores/mailUiStore'
 import type { CollectionObject, EntityObject } from '@MailManager/models'
 import { ComposerMode } from '@/types/composer'
@@ -16,7 +17,7 @@ import DeleteFolderDialog from '@/components/DeleteFolderDialog.vue'
 import FolderSelectionDialog from '@/components/FolderSelectionDialog.vue'
 import RenameFolderDialog from '@/components/RenameFolderDialog.vue'
 import SettingsDialog from '@/components/settings/SettingsDialog.vue'
-import FolderView from '@/components/FolderView.vue'
+import Sidebar from '@/components/Sidebar.vue'
 
 // Vuetify display for responsive behavior
 const display = useDisplay()
@@ -30,18 +31,19 @@ const isManagerAvailable = computed(() => {
 const collectionsStore = useCollectionsStore()
 
 // Mail module store
-const mailStore = useMailStore()
+const mailOperationsStore = useMailOperationsStore()
 const mailUiStore = useMailUiStore()
+const mailSettingsStore = useMailSettingsStore()
+const { messageListWidth } = storeToRefs(mailSettingsStore)
 
 // storeToRefs preserves reactivity for state and computed properties
 const {
   loading,
   selectedMessage,
   currentMessages,
-} = storeToRefs(mailStore)
+} = storeToRefs(mailOperationsStore)
 
 const {
-  sidebarVisible,
   settingsDialogVisible,
   selectedFolder,
   composerMode,
@@ -70,7 +72,22 @@ const {
 } = storeToRefs(mailUiStore)
 
 // Complex store/composable objects accessed directly (not simple refs)
-const { mailSync, entitiesStore } = mailStore
+const { mailSync, entitiesStore } = mailOperationsStore
+
+// Message search (filters the current message list by subject/sender)
+const searchQuery = ref('')
+
+const filteredMessages = computed(() => {
+  const query = (searchQuery.value ?? '').trim().toLowerCase()
+  if (!query) return currentMessages.value
+
+  return currentMessages.value.filter((message: EntityObject) => {
+    const subject = (message.properties.subject || '').toLowerCase()
+    const fromLabel = (message.properties.from?.label || '').toLowerCase()
+    const fromAddress = (message.properties.from?.address || '').toLowerCase()
+    return subject.includes(query) || fromLabel.includes(query) || fromAddress.includes(query)
+  })
+})
 
 const lastSyncLabel = computed(() => {
   const lastSync = unref(unref(mailSync.lastSync))
@@ -93,8 +110,6 @@ const {
 
 const sidebarToggle = () => mailUiStore.sidebarToggle()
 
-const handleSettingsOpen = () => mailUiStore.settingsOpen()
-
 const handleFolderSelect = (folder: CollectionObject) => mailUiStore.selectFolder(folder)
 
 const handleFolderCreateConfirm = async (folderName: string) => {
@@ -105,7 +120,7 @@ const handleFolderCreateConfirm = async (folderName: string) => {
       handleFolderSelect(mutatedFolder)
     }
   } catch (error: unknown) {
-    console.error('[MailPage] Failed to create folder:', error)
+    console.error('[Mail] Failed to create folder:', error)
   }
 }
 
@@ -117,7 +132,7 @@ const handleFolderEditConfirm = async (folderName: string) => {
       handleFolderSelect(mutatedFolder)
     }
   } catch (error: unknown) {
-    console.error('[MailPage] Failed to rename folder:', error)
+    console.error('[Mail] Failed to rename folder:', error)
   }
 }
 
@@ -125,7 +140,7 @@ const handleFolderDeleteConfirm = async () => {
   try {
     await mailUiStore.confirmDeleteFolder()
   } catch (error: unknown) {
-    console.error('[MailPage] Failed to delete folder:', error)
+    console.error('[Mail] Failed to delete folder:', error)
   }
 }
 
@@ -133,7 +148,7 @@ const handleFolderMoveConfirm = async (targetFolder: CollectionObject) => {
   try {
     await mailUiStore.confirmMoveFolder(targetFolder)
   } catch (error: unknown) {
-    console.error('[MailPage] Failed to move folder:', error)
+    console.error('[Mail] Failed to move folder:', error)
   }
 }
 
@@ -141,7 +156,7 @@ const handleFolderMoveCancel = () => mailUiStore.closeMoveFolderDialog()
 
 
 const handleMessageOpen = (message: EntityObject) => {
-  mailStore.selectMessage(message)
+  mailOperationsStore.selectMessage(message)
 
   if (isMobile.value) {
     mailUiStore.sidebarHide()
@@ -156,12 +171,12 @@ const handleMessageComposeForward = (message: EntityObject) => mailUiStore.openC
 
 const handleMessageComposeClose = () => mailUiStore.closeComposer()
 
-const handleMessageFlag = (message: EntityObject, flag: string, value: boolean) => {
-  mailStore.flagMessages([message.identifier], { [flag]: value })
+const handleMessageFlag = async (message: EntityObject, flag: string, value: boolean) => {
+  await mailUiStore.flagMessage(message, flag, value)
 }
 
-const handleMessageDelete = (message: EntityObject) => {
-  mailStore.deleteMessages([message.identifier])
+const handleMessageDelete = async (message: EntityObject) => {
+  await mailUiStore.deleteMessages([message.identifier])
 }
 
 const handleMessageMove = (message: EntityObject) => mailUiStore.openMoveMessagesDialog(message)
@@ -212,16 +227,35 @@ const handleMessageSelectionDelete = () => mailUiStore.deleteSelectedMessages()
   <!-- Normal UI -->
   <div v-else class="mail-container">
     <!-- Top toolbar -->
-    <v-app-bar class="mail-toolbar" elevation="0" density="compact">
-      <v-app-bar-nav-icon 
-        v-if="isMobile" 
-        @click="sidebarToggle"
-      />
-      
-      <v-app-bar-title>Mail</v-app-bar-title>
-      
+    <v-toolbar class="mail-toolbar" elevation="0" density="compact">
+      <template #prepend>
+        <v-btn
+          icon="mdi-menu"
+          variant="text"
+          @click="sidebarToggle"
+        />
+      </template>
+
+      <v-toolbar-title class="d-flex align-center">
+        <v-icon size="24" color="primary" class="mr-2">mdi-email</v-icon>
+        <span class="text-subtitle-1 font-weight-bold">Mail</span>
+      </v-toolbar-title>
+
       <v-spacer />
-      
+
+      <!-- Search -->
+      <v-text-field
+        v-model="searchQuery"
+        density="compact"
+        variant="outlined"
+        placeholder="Search messages..."
+        prepend-inner-icon="mdi-magnify"
+        hide-details
+        single-line
+        clearable
+        class="mail-toolbar-search mx-4"
+      />
+
       <v-btn
         icon="mdi-pencil"
         @click="handleMessageComposeFresh()"
@@ -252,45 +286,23 @@ const handleMessageSelectionDelete = () => mailUiStore.deleteSelectedMessages()
       >
         mdi-sync
       </v-icon>
-    </v-app-bar>
+    </v-toolbar>
 
     <!-- Main content area -->
     <div class="mail-content">
       <!-- Folder tree sidebar -->
-      <v-navigation-drawer
-        v-model="sidebarVisible"
-        :permanent="!isMobile"
-        :temporary="isMobile"
-        width="280"
-        class="mail-sidebar"
-      >
-
-        <FolderView
-          :selected-folder="selectedFolder"
-          @select="handleFolderSelect"
-        />
-
-        <template #append>
-          <div class="pa-2">
-            <v-btn
-              block
-              variant="text"
-              prepend-icon="mdi-cog"
-              @click="handleSettingsOpen"
-            >
-              Settings
-            </v-btn>
-          </div>
-        </template>
-      </v-navigation-drawer>
+      <Sidebar />
 
       <!-- Main area with message list and reader -->
       <div class="mail-main">
         <div class="mail-wrapper">
           <!-- Message list panel -->
-          <div class="mail-list-panel">
+          <div
+            class="mail-list-panel"
+            :style="{ '--mail-list-width': messageListWidth + '%' }"
+          >
             <MessageList
-              :messages="currentMessages"
+              :messages="filteredMessages"
               :selected-collection="selectedFolder"
               :selected-message="selectedMessage"
               :selection-list="selectionList"
@@ -405,7 +417,8 @@ const handleMessageSelectionDelete = () => mailUiStore.deleteSelectedMessages()
   flex-direction: column;
   align-items: center;
   justify-content: center;
-  height: 100vh;
+  height: 100%;
+  min-height: 0;
   padding: 48px;
   text-align: center;
   width: 100%;
@@ -419,28 +432,38 @@ const handleMessageSelectionDelete = () => mailUiStore.deleteSelectedMessages()
 .mail-container {
   display: flex;
   flex-direction: column;
-  height: 100vh;
+  height: 100%;
+  min-height: 0;
   isolation: isolate;
 }
 
 .mail-toolbar {
   flex-shrink: 0;
+  border-bottom: 1px solid rgb(var(--v-border-color)) !important;
+}
+
+.mail-toolbar-search {
+  max-width: 300px;
+}
+
+@media (max-width: 960px) {
+  .mail-toolbar-search {
+    max-width: 180px;
+    margin-inline: 8px !important;
+  }
 }
 
 .mail-content {
   display: flex;
   flex: 1;
+  min-height: 0;
   overflow: hidden;
   position: relative;
 }
 
-.mail-sidebar {
-  border-right: 1px solid rgb(var(--v-border-color));
-  overflow-y: auto;
-}
-
 .mail-main {
   flex: 1;
+  min-height: 0;
   display: flex;
   overflow: hidden;
   min-width: 0;
@@ -448,18 +471,22 @@ const handleMessageSelectionDelete = () => mailUiStore.deleteSelectedMessages()
 
 .mail-wrapper {
   flex: 1;
+  min-height: 0;
+  min-width: 0;
   display: flex;
   overflow: hidden;
 }
 
 .mail-list-panel {
-  width: 320px;
+  flex: 0 0 var(--mail-list-width, 35%);
+  width: var(--mail-list-width, 35%);
   min-width: 280px;
-  max-width: 450px;
+  max-width: 70%;
   border-right: 1px solid rgb(var(--v-border-color));
   overflow-y: auto;
   display: flex;
   flex-direction: column;
+  min-height: 0;
 }
 
 .mail-reader-panel {
@@ -477,6 +504,7 @@ const handleMessageSelectionDelete = () => mailUiStore.deleteSelectedMessages()
   }
   
   .mail-list-panel {
+    flex: 0 0 auto;
     width: 100%;
     max-width: 100%;
     border-right: none;

src/routes.ts

@@ -2,10 +2,11 @@ const routes = [
   {
     name: 'mail',
     path: '/',
-    component: () => import('@/pages/MailPage.vue'),
+    component: () => import('@/pages/Main.vue'),
     meta: {
       title: 'Mail',
-      requiresAuth: true
+      requiresAuth: true,
+      layout: 'fixed'
     }
   },
 ]

src/services/compositionService.ts

@@ -0,0 +1,71 @@
+import { createFetchWrapper } from '@KTXC'
+import type { ApiRequest, ApiResponse } from '@MailManager/types/common'
+import type {
+  CompositionAttachmentAddRequest,
+  CompositionAttachmentAddResponse,
+  CompositionAttachmentRemoveRequest,
+  CompositionAttachmentRemoveResponse,
+  CompositionDiscardRequest,
+  CompositionDiscardResponse,
+  CompositionPatchRequest,
+  CompositionPatchResponse,
+  CompositionSendRequest,
+  CompositionSendResponse,
+  CompositionStageRequest,
+  CompositionStageResponse,
+} from '@/types/composition'
+
+const fetchWrapper = createFetchWrapper()
+const API_URL = '/m/mail/compose/v1'
+const API_VERSION = 1
+
+function generateTransactionId(): string {
+  return `${Date.now()}-${Math.random().toString(36).substring(2, 9)}`
+}
+
+async function post<TRequest, TResponse>(operation: string, data: TRequest): Promise<TResponse> {
+  const request: ApiRequest<TRequest> = {
+    version: API_VERSION,
+    transaction: generateTransactionId(),
+    operation,
+    data,
+  }
+
+  const response: ApiResponse<TResponse> = await fetchWrapper.post(API_URL, request)
+
+  if (response.status === 'error') {
+    const errorMessage = `[${operation}] ${response.data.message}${response.data.code ? ` (code: ${response.data.code})` : ''}`
+    throw new Error(errorMessage)
+  }
+
+  return response.data
+}
+
+const compositionService = {
+  async stage(request: CompositionStageRequest): Promise<CompositionStageResponse> {
+    return await post<CompositionStageRequest, CompositionStageResponse>('stage', request)
+  },
+
+  async patch(request: CompositionPatchRequest): Promise<CompositionPatchResponse> {
+    return await post<CompositionPatchRequest, CompositionPatchResponse>('patch', request)
+  },
+
+  async discard(request: CompositionDiscardRequest): Promise<CompositionDiscardResponse> {
+    return await post<CompositionDiscardRequest, CompositionDiscardResponse>('discard', request)
+  },
+
+  async send(request: CompositionSendRequest): Promise<CompositionSendResponse> {
+    return await post<CompositionSendRequest, CompositionSendResponse>('send', request)
+  },
+
+  async attachmentAdd(request: CompositionAttachmentAddRequest): Promise<CompositionAttachmentAddResponse> {
+    return await post<CompositionAttachmentAddRequest, CompositionAttachmentAddResponse>('attachment.add', request)
+  },
+
+  async attachmentRemove(request: CompositionAttachmentRemoveRequest): Promise<CompositionAttachmentRemoveResponse> {
+    return await post<CompositionAttachmentRemoveRequest, CompositionAttachmentRemoveResponse>('attachment.remove', request)
+  }
+  
+}
+
+export default compositionService

src/services/mediaViewer.ts

@@ -0,0 +1,48 @@
+/**
+ * mediaViewer — bridges the Mail UI to the standalone media_viewer module
+ */
+
+import { defineAsyncComponent } from 'vue'
+import { useIntegrationStore } from '@KTXC'
+
+const MEDIA_VIEWER_FORMAT_POINT = 'media_viewer_format'
+const MEDIA_VIEWER_POINT = 'media_viewer'
+
+function mimeMatchesPattern(mime: string, pattern: string): boolean {
+  if (pattern.endsWith('/*')) {
+    return mime.startsWith(pattern.slice(0, -1))
+  }
+  return mime === pattern
+}
+
+function mimeMatchesViewer(mime: string, mimeTypes?: string[], mimePatterns?: string[]): boolean {
+  if (mimeTypes?.includes(mime)) return true
+  if (mimePatterns) {
+    for (const pattern of mimePatterns) {
+      if (mimeMatchesPattern(mime, pattern)) return true
+    }
+  }
+  return false
+}
+
+/** True if a leaf viewer is registered for this MIME type. */
+export function mediaViewerCanDisplay(mime: string | null | undefined): boolean {
+  if (!mime) return false
+  const viewers = useIntegrationStore().getItems(MEDIA_VIEWER_FORMAT_POINT)
+  return viewers.some(viewer =>
+    mimeMatchesViewer(
+      mime,
+      viewer.meta?.mimeTypes as string[] | undefined,
+      viewer.meta?.mimePatterns as string[] | undefined,
+    ),
+  )
+}
+
+export function mediaViewerComponent(type: 'dialog' | 'popover' = 'dialog') {
+  // The integration store prefixes ids with the module handle
+  // (e.g. 'media_viewer.dialog'), so match on the suffix.
+  const entry = useIntegrationStore().getItems(MEDIA_VIEWER_POINT).find(i => i.id.endsWith(`.${type}`))
+  return entry?.component
+    ? defineAsyncComponent(entry.component as () => Promise<unknown>)
+    : null
+}

src/services/recipientService.ts

@@ -0,0 +1,110 @@
+/**
+ * Recipient service
+ */
+
+import { entityService } from '@PeopleManager/services'
+import { GroupObject, IndividualObject, OrganizationObject, type EntityObject } from '@PeopleManager/models'
+import type { MessageAddressInterface } from '@MailManager/types/message'
+
+/** Minimum query length before a lookup is worthwhile. */
+const MIN_QUERY_LENGTH = 3
+
+/** Default cap on the number of matches returned. */
+const DEFAULT_LIMIT = 10
+
+/**
+ * Derive a human-readable display name from a contact's properties.
+ */
+function displayName(properties: IndividualObject | OrganizationObject | GroupObject): string {
+  if (properties.label) {
+    return properties.label
+  }
+
+  if (properties instanceof IndividualObject) {
+    const parts = [properties.names?.given, properties.names?.family].filter(Boolean)
+    if (parts.length > 0) {
+      return parts.join(' ')
+    }
+  } else if (properties instanceof OrganizationObject) {
+    if (properties.names?.full) {
+      return properties.names.full
+    }
+  }
+
+  return ''
+}
+
+/**
+ * Flatten a contact entity into one recipient per email address.
+ * Groups (no addressable email) are skipped.
+ */
+function toRecipients(entity: EntityObject): MessageAddressInterface[] {
+  const properties = entity.properties
+
+  if (properties instanceof GroupObject) {
+    return []
+  }
+
+  const emails = properties.emails
+  if (!emails) {
+    return []
+  }
+
+  const label = displayName(properties)
+  const recipients: MessageAddressInterface[] = []
+
+  for (const email of Object.values(emails)) {
+    const address = email?.address?.trim()
+    if (!address) {
+      continue
+    }
+    recipients.push({ address, label: label || address })
+  }
+
+  return recipients
+}
+
+export const recipientService = {
+  /**
+   * Search the user's contacts for recipients matching a query.
+   *
+   * @param query - free-text fragment matched against contact names
+   * @param limit - maximum number of recipients to return
+   *
+   * @returns De-duplicated recipients (one per email address)
+   */
+  async search(query: string, limit: number = DEFAULT_LIMIT): Promise<MessageAddressInterface[]> {
+    const trimmed = query.trim()
+    if (trimmed.length < MIN_QUERY_LENGTH) {
+      return []
+    }
+
+    const recipients: MessageAddressInterface[] = []
+    const seen = new Set<string>()
+
+    try {
+      // The "*" attribute defaults to LIKE, so a scalar string is all that is
+      // needed; range caps the scan to the first `limit` matches.
+      await entityService.listStream(
+        { filter: { '*': trimmed }, range: { type: 'tally', anchor: 'absolute', position: 0, tally: limit } },
+        (entity: EntityObject) => {
+          for (const recipient of toRecipients(entity)) {
+            const key = recipient.address.toLowerCase()
+            if (seen.has(key)) {
+              continue
+            }
+            seen.add(key)
+            recipients.push(recipient)
+          }
+        },
+      )
+    } catch (error: any) {
+      console.error('[Mail][Recipient Service] - Search failed:', error)
+      return []
+    }
+
+    return recipients.slice(0, limit)
+  },
+}
+
+export default recipientService

src/stores/mailCompositionStore.ts

@@ -0,0 +1,563 @@
+import { computed, ref } from 'vue'
+import { defineStore } from 'pinia'
+import { useServicesStore } from '@MailManager/stores/servicesStore'
+import { useMailUiStore } from './mailUiStore'
+import compositionService from '@/services/compositionService'
+import type {
+  CompositionAttachmentAddRequest,
+  CompositionAttachmentInterface,
+  CompositionAttachmentRemoveRequest,
+  CompositionPatchRequest,
+  CompositionStageRequest,
+  CompositionStageResponse,
+} from '@/types/composition'
+import { ComposerMode } from '@/types/composer'
+import type { ComposerDraft, ComposerDraftAttachment, ComposerDraftMessage, ComposerSenderIdentity } from '@/types/composer'
+import { EntityObject, MessageAddressObject, ServiceObject } from '@MailManager/models'
+import type { MessageAddressInterface } from '@MailManager/types/message'
+
+export const useMailCompositionStore = defineStore('mailCompositionStore', () => {
+  const servicesStore = useServicesStore()
+  const mailUiStore = useMailUiStore()
+  
+  const activeDraft = ref<ComposerDraft | null>(null)
+  const saving = ref(false)
+
+  let autoSaveTimer: ReturnType<typeof setTimeout> | null = null
+
+  const stageStatus = computed(() => {
+    if (!activeDraft.value) {
+      return ''
+    }
+
+    if (saving.value) {
+      return 'Saving...'
+    }
+
+    if (activeDraft.value.stageStatus === 'local') {
+      return 'Local draft only'
+    }
+
+    if (!activeDraft.value.stagedAt) {
+      return ''
+    }
+
+    const seconds = Math.floor((Date.now() - activeDraft.value.stagedAt.getTime()) / 1000)
+    if (seconds < 60) {
+      return 'Staged just now'
+    }
+    if (seconds < 3600) {
+      return `Staged ${Math.floor(seconds / 60)} min ago`
+    }
+
+    return `Staged at ${activeDraft.value.stagedAt.toLocaleTimeString()}`
+  })
+
+  const senderIdentities = computed(() => {
+    const identities: ComposerSenderIdentity[] = []
+    
+    servicesStore.servicesEnabled.forEach(service => {
+      if (!service.capable('EntityTransmit') || service.identifier === null) {
+        return
+      }
+
+      if (service.primaryAddress && !service.primaryAddress.empty) {
+        identities.push({
+          service: service,
+          address: service.primaryAddress.address,
+          label: service.primaryAddress.label ?? null,
+        })
+      }
+
+      service.secondaryAddresses.forEach(addr => {
+        identities.push({
+          service: service,
+          address: addr.address,
+          label: addr.label,
+        })
+      })
+    })
+    
+    return identities
+  })
+
+  function openDraft(mode: ComposerMode, source?: EntityObject | MessageAddressObject | null) {
+
+    let sender = null
+
+    // find sending identity from source message recipients if possible
+    if (source instanceof EntityObject) {
+      const sourceMessage = source.properties
+      const recipients = [...(sourceMessage.to || []), ...(sourceMessage.cc || []), ...(sourceMessage.bcc || [])]
+
+      const matchingRecipient = recipients.find(recipient => {
+        return senderIdentities.value.some(identity => identity.address === recipient.address)
+      })
+
+      if (matchingRecipient) {
+        sender = senderIdentities.value.find(identity => identity.address === matchingRecipient.address) ?? null
+      }
+    }
+
+    // find sending identity from currently selected folder service if possible
+    if (sender === null) {
+      const serviceId = mailUiStore.selectedFolder?.service
+      sender = senderIdentities.value.find(identity =>
+        serviceId === `${identity.service.provider}:${identity.service.identifier}`
+      ) ?? null
+    }
+
+    // fallback to first available identity
+    if (sender === null) {
+      sender = senderIdentities.value[0]
+    }
+
+    if (sender === null) {
+      return
+    }
+
+    activeDraft.value = buildDraft(mode, sender, source)
+    activeDraft.value.action = mode
+
+    stageDraft()
+  }
+
+  function closeDraft() {
+    return discardDraft()
+  }
+
+  async function stageDraft() {
+    if (!activeDraft.value) {
+      return null
+    }
+
+    saving.value = true
+    try {
+      const request: CompositionStageRequest = {
+        identifier: activeDraft.value.identifier,
+        action: activeDraft.value.action,
+        sender: {
+          provider: activeDraft.value.sender.service.provider,
+          service: activeDraft.value.sender.service.identifier,
+          address: activeDraft.value.sender.address,
+          name: activeDraft.value.sender.label || null,
+        },
+        source: activeDraft.value.source,
+        message: activeDraft.value.message,
+      }
+
+      const response = await compositionService.stage(request)
+      applyStageResponse(response)
+    } catch (error) {
+      console.error('[Mail][Composer] Failed to stage draft:', error)
+      throw error
+    } finally {
+      saving.value = false
+    }
+  }
+
+  async function patchDraft() {
+    if (!activeDraft.value) {
+      return null
+    }
+
+    saving.value = true
+    try {
+      const request: CompositionPatchRequest = {
+        identifier: activeDraft.value.identifier,
+        revision: activeDraft.value.revision,
+        sender: {
+          provider: activeDraft.value.sender.service.provider,
+          service: activeDraft.value.sender.service.identifier,
+          address: activeDraft.value.sender.address,
+          name: activeDraft.value.sender.label || null,
+        },
+        message: activeDraft.value.message,
+      }
+
+      const response = await compositionService.patch(request)
+
+      return response
+    } catch (error) {
+      console.error('[Mail][Composer] Failed to patch draft:', error)
+      throw error
+    } finally {
+      saving.value = false
+    }
+  }
+
+  async function discardDraft() {
+    if (!activeDraft.value) {
+      return
+    }
+
+    const draftId = activeDraft.value.identifier
+    try {
+      await compositionService.discard({ identifier: draftId })
+    } catch (error) {
+      console.error('[Mail][Composer] Failed to discard staged draft:', error)
+    } finally {
+      activeDraft.value = null
+    }
+  }
+
+  async function sendDraft() {
+    if (!activeDraft.value) {
+      return
+    }
+    
+    try {
+      const response = await compositionService.send({ 
+        identifier: activeDraft.value.identifier,
+        revision: activeDraft.value.revision,
+        sender: {
+          provider: activeDraft.value.sender.service.provider,
+          service: activeDraft.value.sender.service.identifier,
+          address: activeDraft.value.sender.address,
+          name: activeDraft.value.sender.label || null,
+        },
+        message: activeDraft.value.message,
+        attachments: activeDraft.value.attachments,
+      })
+
+      if (response.disposition === 'error') {
+        console.error('[Mail][Composer] Failed to send message:', response.error)
+        mailUiStore.notify(`Failed to send message: ${response.error?.message || 'Unknown error'}`, 'error')
+        return
+      }
+
+      activeDraft.value = null
+      mailUiStore.notify('Message sent successfully', 'success')
+      mailUiStore.closeComposer()
+    } catch (error) {
+      console.error('[Mail][Composer] Failed to send draft:', error)
+      throw error
+    }
+  }
+
+  function updateRecipients(field: 'to' | 'cc' | 'bcc', values: MessageAddressInterface[]) {
+    if (!activeDraft.value) {
+      return
+    }
+
+    activeDraft.value.message[field] = [...values]
+    queueSave(false)
+  }
+
+  function updateSubject(subject: string) {
+    if (!activeDraft.value) {
+      return
+    }
+
+    activeDraft.value.message.subject = subject
+    queueSave(false)
+  }
+
+  function updateBody(body: ComposerDraftMessage['body']) {
+    if (!activeDraft.value) {
+      return
+    }
+
+    activeDraft.value.message.body = {
+      html: body.html,
+      text: body.text,
+    }
+    queueSave(false)
+  }
+
+  function updateSender(sender: ComposerSenderIdentity) {
+    if (!activeDraft.value) {
+      return
+    }
+
+    activeDraft.value.sender = sender
+    queueSave(false)
+  }
+
+  async function addAttachments(files: File[]) {
+    if (!activeDraft.value || files.length === 0) {
+      return
+    }
+
+    const composition = activeDraft.value.identifier
+    const attachments = Object.fromEntries(
+      await Promise.all(files.map(async file => {
+        const identifier = createIdentifier()
+        const data = await fileToBase64(file)
+
+        return [identifier, {
+          identifier,
+          composition,
+          origin: 'upload',
+          name: file.name,
+          type: file.type || 'application/octet-stream',
+          size: file.size,
+          source: null,
+          data,
+        } satisfies CompositionAttachmentInterface]
+      })),
+    )
+
+    const request: CompositionAttachmentAddRequest = {
+      composition,
+      attachments,
+    }
+
+    const response = await compositionService.attachmentAdd(request)
+
+    if (!activeDraft.value || response.composition !== activeDraft.value.identifier) {
+      return
+    }
+
+    if (response.disposition === 'error') {
+      console.error('[Mail][Composer] Failed to add attachments:', response.error)
+      return
+    }
+
+    Object.values(response.attachments).forEach(attachment => {
+      activeDraft.value!.attachments[attachment.identifier] = {
+        identifier: attachment.identifier,
+        composition: attachment.composition,
+        origin: attachment.origin,
+        name: attachment.name,
+        type: attachment.type,
+        size: attachment.size,
+        source: attachment.source,
+      }
+    })
+  }
+
+  async function removeAttachment(identifier: string) {
+    if (!activeDraft.value) {
+      return
+    }
+
+    const attachment = activeDraft.value.attachments[identifier]
+    if (!attachment) {
+      return
+    }
+
+    const request: CompositionAttachmentRemoveRequest = {
+      composition: attachment.composition,
+      identifier: attachment.identifier,
+    }
+
+    const response = await compositionService.attachmentRemove(request)
+
+    if (response.disposition === 'error') {
+      console.error('[Mail][Composer] Failed to remove attachment:', response.error)
+    }
+    
+    delete activeDraft.value.attachments[attachment.identifier]
+  }
+
+  function queueSave(immediate: boolean) {
+    if (!activeDraft.value) {
+      return
+    }
+    activeDraft.value.revision += 1
+
+    if (autoSaveTimer) {
+      clearTimeout(autoSaveTimer)
+    }
+
+    autoSaveTimer = setTimeout(() => {
+      void flushSave()
+    }, immediate ? 0 : 15000)
+  }
+
+  async function flushSave() {
+    if (autoSaveTimer) {
+      clearTimeout(autoSaveTimer)
+      autoSaveTimer = null
+    }
+    if (!activeDraft.value) {
+      return
+    }
+    
+    await patchDraft()
+  }
+
+  function applyStageResponse(response: CompositionStageResponse) {
+    const draft = activeDraft.value
+    if (!draft) {
+      return
+    }
+
+    if (response.identifier !== draft.identifier) {
+      console.warn('[Mail][Composer] Stage response identifier mismatch:', response.identifier, draft.identifier)
+      return
+    }
+
+    if (response.revision < draft.revision) {
+      console.warn('[Mail][Composer] Stage response revision is older than current draft:', response.revision, draft.revision)
+      return
+    }
+
+    draft.attachments = {}
+    Object.values(response.attachments).forEach(attachment => {
+      draft.attachments[attachment.identifier] = {
+        identifier: attachment.identifier,
+        composition: attachment.composition,
+        origin: attachment.origin,
+        name: attachment.name,
+        type: attachment.type,
+        size: attachment.size,
+        source: attachment.source,
+      }
+    })
+
+    draft.revision = response.revision
+    draft.stageStatus = response.disposition
+    draft.stagedAt = new Date()
+  }
+
+  return {
+    activeDraft,
+    saving,
+    stageStatus,
+    senderIdentities,
+    openDraft,
+    closeDraft,
+    sendDraft,
+    updateSender,
+    updateRecipients,
+    updateSubject,
+    updateBody,
+    addAttachments,
+    removeAttachment,
+    flushSave,
+  }
+})
+
+function buildDraft(
+  mode: ComposerMode,
+  sender: ComposerSenderIdentity,
+  source?: EntityObject | MessageAddressObject | null,
+): ComposerDraft {
+  const composition = createIdentifier()
+  const freshMessage = buildMessage(mode, source)
+  const freshAttachments = buildAttachments(composition, mode, source)
+  const sourceIdentifier = source instanceof EntityObject ? source.identifier : null
+  return {
+    action: mode,
+    identifier: composition,
+    revision: 1,
+    sender: sender,
+    source: sourceIdentifier,
+    stageStatus: 'local',
+    stagedAt: null,
+    message: freshMessage,
+    attachments: freshAttachments,
+  }
+}
+
+function buildMessage(
+  mode: ComposerMode,
+  source: EntityObject | MessageAddressObject | null | undefined,
+): ComposerDraftMessage {
+  
+  if (!source) {
+    return emptyMessage()
+  }
+  
+  if (mode === ComposerMode.Fresh) {
+    const freshMessage = emptyMessage()
+
+    if (source && source instanceof MessageAddressObject) {
+      freshMessage.to = [{ address: source.address, label: source.label }]
+    }
+
+    return freshMessage
+  }
+
+  if (!(source instanceof EntityObject)) {
+    return emptyMessage()
+  }
+
+  const sourceMessage = source.properties
+  const originalSubject = sourceMessage.subject || ''
+  const originalBody = sourceMessage.getHtmlContent() || sourceMessage.getTextContent() || ''
+  const senderName = sourceMessage.from?.label || sourceMessage.from?.address || 'Unknown'
+  const sentAt = sourceMessage.sent || source.created || ''
+  const sentLabel = sentAt ? new Date(sentAt).toLocaleString() : 'an unknown time'
+
+  if (mode === ComposerMode.Reply) {
+    const replyToAddr = sourceMessage.replyTo?.[0] ?? sourceMessage.from ?? null
+    const replyToAddress = replyToAddr?.address || ''
+    return {
+      to: replyToAddress ? [{ address: replyToAddress, label: replyToAddr?.label }] : [],
+      cc: [],
+      bcc: [],
+      subject: /^Re:/i.test(originalSubject) ? originalSubject : `Re: ${originalSubject}`,
+      body: {
+        html: `<p><br></p><p>---------- Original message ---------</p><p>From: ${senderName}</p><p>Date: ${sentLabel}</p><p>Subject: ${originalSubject}</p><blockquote>${originalBody}</blockquote>`,
+        text: '',
+      },
+    }
+  }
+
+  return {
+    to: [],
+    cc: [],
+    bcc: [],
+    subject: /^Fwd:/i.test(originalSubject) ? originalSubject : `Fwd: ${originalSubject}`,
+    body: {
+      html: `<p><br></p><p>---------- Forwarded message ---------</p><p>From: ${senderName}</p><p>Date: ${sentLabel}</p><p>Subject: ${originalSubject}</p><blockquote>${originalBody}</blockquote>`,
+      text: '',
+    },
+  }
+}
+
+function buildAttachments(composition: string, mode: ComposerMode, source?: EntityObject | MessageAddressObject | null): Record<string, ComposerDraftAttachment> {
+  if (mode === ComposerMode.Fresh || mode === ComposerMode.Reply || !(source instanceof EntityObject)) {
+    return {}
+  }
+
+  const sourceAttachments = source.properties.attachments || []
+  const attachments: Record<string, ComposerDraftAttachment> = {}
+  sourceAttachments.forEach(attachment => {
+    const id = createIdentifier()
+    attachments[id] = {
+      identifier: id,
+      composition: composition,
+      origin: 'source',
+      name: attachment.name || '',
+      type: attachment.type || 'application/octet-stream',
+      size: attachment.size || 0,
+      source: source.identifier,
+    }
+  })
+  return attachments
+}
+
+function emptyMessage(): ComposerDraftMessage {
+  return {
+    to: [],
+    cc: [],
+    bcc: [],
+    subject: '',
+    body: {
+      html: '',
+      text: '',
+    },
+  }
+}
+
+function createIdentifier(): string {
+  if (typeof crypto !== 'undefined' && typeof crypto.randomUUID === 'function') {
+    return crypto.randomUUID()
+  }
+
+  return `${Date.now()}-${Math.random().toString(36).slice(2, 10)}`
+}
+
+async function fileToBase64(file: File): Promise<string> {
+  const buffer = await file.arrayBuffer()
+  let binary = ''
+  const bytes = new Uint8Array(buffer)
+  for (let index = 0; index < bytes.byteLength; index += 1) {
+    binary += String.fromCharCode(bytes[index])
+  }
+  return btoa(binary)
+}

src/stores/mailOperationsStore.ts

@@ -4,9 +4,8 @@ import { useCollectionsStore } from '@MailManager/stores/collectionsStore'
 import { useEntitiesStore } from '@MailManager/stores/entitiesStore'
 import { useServicesStore } from '@MailManager/stores/servicesStore'
 import { useMailSync } from '@MailManager/composables/useMailSync'
-import { useSnackbar } from '@KTXC'
 import type { ServiceIdentifier, CollectionIdentifier, EntityIdentifier } from '@MailManager/types/common'
-import type { EntityTransmitRequest } from '@MailManager/types/entity'
+import type { EntityTransmitRequest, EntityBlobSelector } from '@MailManager/types/entity'
 import type { MessageAddressInterface, MessageInterface, MessagePartInterface } from '@MailManager/types/message'
 import { ServiceObject, type CollectionObject, type EntityObject } from '@MailManager/models'
 import { CollectionPropertiesObject } from '@MailManager/models/collection'
@@ -22,11 +21,10 @@ interface ComposerMessageInput {
   }
 }
 
-export const useMailStore = defineStore('mailStore', () => {
+export const useMailOperationsStore = defineStore('mailOperationsStore', () => {
   const servicesStore = useServicesStore()
   const collectionsStore = useCollectionsStore()
   const entitiesStore = useEntitiesStore()
-  const { showSnackbar } = useSnackbar()
 
   // Background mail sync
   const mailSyncController = useMailSync({
@@ -158,11 +156,7 @@ export const useMailStore = defineStore('mailStore', () => {
 
     // Track the currently selected folder
     if (selectedFolder.value) {
-      //mailSyncController.addSource({
-      //  provider: selectedFolder.value.provider,
-      //  service: selectedFolder.value.service,
-      //  collections: [selectedFolder.value.identifier],
-      //})
+      mailSyncController.addSource(selectedFolder.value.identifier)
     }
 
     // Always track inboxes for each account (for new-mail notifications)
@@ -177,13 +171,7 @@ export const useMailStore = defineStore('mailStore', () => {
             String(c.identifier).toLowerCase() === 'inbox'),
       )
 
-      if (inboxes.length > 0) {
-        //mailSyncController.addSource({
-        //  provider: service.provider,
-        //  service: service.identifier as string | number,
-        //  collections: inboxes.map(inbox => inbox.identifier),
-        //})
-      }
+      inboxes.forEach(inbox => mailSyncController.addSource(inbox.identifier))
     })
 
     if (mailSyncController.sources.value.length > 0 && !mailSyncController.isRunning.value) {
@@ -398,13 +386,10 @@ export const useMailStore = defineStore('mailStore', () => {
         }
       }
 
-      notify('Message sent', 'success')
       resetComposerState()
       return response
     } catch (error) {
-      const messageText = error instanceof Error ? error.message : 'Failed to send message'
       console.error('[Mail][Operations] Failed to send message:', error)
-      notify(messageText, 'error')
       throw error
     } finally {
       composerSending.value = false
@@ -428,11 +413,6 @@ export const useMailStore = defineStore('mailStore', () => {
       parentFolder?.identifier,
     )
 
-    notify(
-      `Folder "${newFolder.properties.label || properties.label}" created`,
-      'success',
-    )
-
     return newFolder
   }
 
@@ -448,11 +428,6 @@ export const useMailStore = defineStore('mailStore', () => {
       selectedFolder.value = updatedFolder
     }
 
-    notify(
-      `Folder "${folder.properties.label || String(folder.identifier)}" renamed to "${updatedFolder.properties.label || properties.label}"`,
-      'success',
-    )
-
     return updatedFolder
   }
 
@@ -463,11 +438,6 @@ export const useMailStore = defineStore('mailStore', () => {
       selectedFolder.value = movedFolder
     }
 
-    notify(
-      `Folder "${source.properties.label || String(source.identifier)}" moved to "${target.properties.label || String(target.identifier)}"`,
-      'success',
-    )
-
     return movedFolder
   }
 
@@ -478,81 +448,38 @@ export const useMailStore = defineStore('mailStore', () => {
       await selectFolder(null)
     }
 
-    notify(
-      `Folder "${folder.properties.label || String(folder.identifier)}" deleted`,
-      'success',
-    )
-
     return deletedFolder
   }
 
   async function deleteMessages(entityIdentifiers: EntityIdentifier[]) {
     if (entityIdentifiers.length === 0) {
-      return
+      return null
     }
 
     loading.value = true
 
     try {
-      const { successes, failures } = await entitiesStore.delete(entityIdentifiers)
-
-      if (failures.length === 0) {
-        notify(
-          successes.length === 1 ? 'Message deleted' : `${successes.length} messages deleted`,
-          'success',
-        )
-      } 
-      
-      if (failures.length > 0) {
-        notify(
-          successes.length === 0
-            ? `Delete failed for ${failures.length === 1 ? '1 message' : `${failures.length} messages`}`
-            : `Deleted ${successes.length} ${successes.length === 1 ? 'message' : 'messages'}. ${failures.length} failed.`,
-          successes.length === 0 ? 'error' : 'warning',
-        )
-      }
+      return await entitiesStore.delete(entityIdentifiers)
     } catch (error) {
-      const messageText = error instanceof Error ? error.message : 'Failed to delete messages'
       console.error('[Mail][Operations] Failed to delete messages:', error)
-      notify(messageText, 'error')
       throw error
     } finally {
       loading.value = false
     }
   }
 
-  async function flagMessages(entityIdentifiers: EntityIdentifier[], flags: Partial<MessageInterface['flags']>, options: { notify?: boolean } = {}) {
+  async function flagMessages(entityIdentifiers: EntityIdentifier[], flags: Partial<NonNullable<MessageInterface['flags']>>) {
     if (entityIdentifiers.length === 0) {
-      return
+      return null
     }
 
-    const shouldNotify = options.notify ?? true
-
     try {
       const patch = entitiesStore.fresh().properties
       patch.flags = flags
 
-      const { successes, failures } = await entitiesStore.patch(patch, entityIdentifiers)
-
-      if (shouldNotify && successes.length > 0) {
-        notify(
-          successes.length === 1 ? 'Message updated' : `${successes.length} messages updated`,
-          'success',
-        )
-      }
-
-      if (shouldNotify && failures.length > 0) {
-        notify(
-          successes.length === 0
-            ? `Update failed for ${failures.length === 1 ? '1 message' : `${failures.length} messages`}`
-            : `Updated ${successes.length} ${successes.length === 1 ? 'message' : 'messages'}. ${failures.length} failed.`,
-          successes.length === 0 ? 'error' : 'warning',
-        )
-      }
+      return await entitiesStore.patch(patch, entityIdentifiers)
     } catch (error) {
-      const messageText = error instanceof Error ? error.message : 'Failed to update messages'
       console.error('[Mail][Operations] Failed to update messages:', error)
-      notify(messageText, 'error')
       throw error
     }
   }
@@ -592,7 +519,7 @@ export const useMailStore = defineStore('mailStore', () => {
     )
 
     if (movableIdentifiers.length === 0) {
-      return
+      return null
     }
 
     loading.value = true
@@ -600,29 +527,13 @@ export const useMailStore = defineStore('mailStore', () => {
     try {
       const { successes, failures } = await entitiesStore.move(target.identifier, movableIdentifiers)
 
-      if (failures.length === 0) {
-        notify(
-          successes.length === 1 ? 'Message moved' : `${successes.length} messages moved`,
-          'success',
-        )
-      } 
-      
-      if (failures.length > 0) {
-        notify(
-          successes.length === 0
-            ? `Move failed for ${failures.length === 1 ? '1 message' : `${failures.length} messages`}`
-            : `Moved ${successes.length} ${successes.length === 1 ? 'message' : 'messages'}. ${failures.length} failed.`,
-          successes.length === 0 ? 'error' : 'warning',
-        )
-      }
-
       // update source collections to reflect moved messages
       sourceCollections.push(target.identifier)
       await collectionsStore.fetch(sourceCollections)
+
+      return { successes, failures }
     } catch (error) {
-      const messageText = error instanceof Error ? error.message : 'Failed to move messages'
       console.error('[Mail][Operations] Failed to move messages:', error)
-      notify(messageText, 'error')
       throw error
     } finally {
       loading.value = false
@@ -640,24 +551,28 @@ export const useMailStore = defineStore('mailStore', () => {
     try {
       await entitiesStore.download(target, part)
     } catch (error) {
-      const messageText = error instanceof Error
-        ? error.message
-        : index === undefined
-          ? 'Failed to download message'
-          : 'Failed to download attachment'
       console.error(
         index === undefined
           ? '[Mail][Operations] Failed to download message:'
           : '[Mail][Operations] Failed to download attachment:',
         error,
       )
-      notify(messageText, 'error')
       throw error
     }
   }
 
-  function notify(message: string, color: 'success' | 'error' | 'info' | 'warning' = 'success') {
-    showSnackbar({ message, color })
+  async function attachmentBlob(entity: EntityObject, part: MessagePartInterface): Promise<Blob> {
+    const selector: EntityBlobSelector = {
+      blobId: part.blobId ?? undefined,
+      partId: part.partId ?? undefined,
+      cid: part.cid ?? undefined,
+    }
+    const results = await entitiesStore.blobs(entity.identifier, [selector])
+    const blob = results[0]?.blob
+    if (!blob) {
+      throw new Error('Attachment content unavailable')
+    }
+    return blob
   }
 
   // ── Exports ───────────────────────────────────────────────────────────────
@@ -696,9 +611,9 @@ export const useMailStore = defineStore('mailStore', () => {
     deleteFolder,
     moveMessages,
     downloadMessage,
+    attachmentBlob,
     moveFolder,
     renameFolder,
-    notify,
     isServiceFolderLoading,
     hasServiceFoldersLoaded,
     getServiceFolderError,

src/stores/mailRecipientsStore.ts

@@ -0,0 +1,85 @@
+/**
+ * Recipients Store
+ */
+
+import { ref } from 'vue'
+import { defineStore } from 'pinia'
+import { recipientService } from '../services/recipientService'
+import type { MessageAddressInterface } from '@MailManager/types/message'
+
+/** Minimum characters before a lookup fires. */
+const MIN_QUERY_LENGTH = 3
+
+/** Debounce window for keystroke-driven searches. */
+const DEBOUNCE_MS = 250
+
+export const useRecipientLookupStore = defineStore('mailRecipientsStore', () => {
+  const suggestions = ref<MessageAddressInterface[]>([])
+  const searching = ref(false)
+
+  let debounceTimer: ReturnType<typeof setTimeout> | null = null
+  // Monotonic token so out-of-order/stale responses are discarded.
+  let requestToken = 0
+
+  function cancelPending() {
+    if (debounceTimer) {
+      clearTimeout(debounceTimer)
+      debounceTimer = null
+    }
+  }
+
+  /**
+   * Clear suggestions and cancel any in-flight lookup.
+   */
+  function clear() {
+    cancelPending()
+    requestToken++
+    suggestions.value = []
+    searching.value = false
+  }
+
+  /**
+   * Debounced contact search. Queries shorter than MIN_QUERY_LENGTH clear the
+   * suggestion list without hitting the backend.
+   */
+  function search(query: string) {
+    const trimmed = (query ?? '').trim()
+    cancelPending()
+
+    if (trimmed.length < MIN_QUERY_LENGTH) {
+      requestToken++
+      suggestions.value = []
+      searching.value = false
+      return
+    }
+
+    searching.value = true
+    const token = ++requestToken
+
+    debounceTimer = setTimeout(async () => {
+      try {
+        const matches = await recipientService.search(trimmed)
+        if (token !== requestToken) {
+          return
+        }
+        suggestions.value = matches
+      } catch (error: any) {
+        if (token === requestToken) {
+          suggestions.value = []
+        }
+        console.error('[Mail][Recipient Lookup] - Search failed:', error)
+      } finally {
+        if (token === requestToken) {
+          searching.value = false
+        }
+      }
+    }, DEBOUNCE_MS)
+  }
+
+  return {
+    suggestions,
+    searching,
+    search,
+    clear,
+  }
+})

src/stores/mailSettingsStore.ts

@@ -5,13 +5,46 @@ import { useUserStore } from '@KTXC'
 const MESSAGE_READ_ENABLED_KEY = 'mail.behaviour.messageReadEnabled'
 const MESSAGE_READ_DELAY_KEY = 'mail.behaviour.messageReadDelay'
 const FOLDER_VIEW_MODE_KEY = 'mail.folderViewMode'
+const MESSAGE_LIST_DENSITY_KEY = 'mail.messageListDensity'
+const MESSAGE_LIST_WIDTH_KEY = 'mail.messageListWidth'
 
 const DEFAULT_MESSAGE_READ_ENABLED = false
 const DEFAULT_MESSAGE_READ_DELAY = 5
 const DEFAULT_FOLDER_VIEW_MODE = 'tree'
+const DEFAULT_MESSAGE_LIST_DENSITY = 'cozy'
+const DEFAULT_MESSAGE_LIST_WIDTH = 35
 
 export type FolderViewMode = 'tree' | 'page'
 
+export type MessageListDensity = 'compact' | 'cozy' | 'comfortable'
+
+export const messageListDensityOptions = [
+  { value: 'compact', title: 'Compact' },
+  { value: 'cozy', title: 'Cozy' },
+  { value: 'comfortable', title: 'Comfortable' },
+]
+
+export const messageListDensityConfig: Record<MessageListDensity, {
+  itemHeight: number
+  lines: 'one' | 'two' | 'three'
+  showSubjectLine: boolean
+  showThirdLine: boolean
+}> = {
+  compact: { itemHeight: 56, lines: 'one', showSubjectLine: false, showThirdLine: false },
+  cozy: { itemHeight: 72, lines: 'two', showSubjectLine: true, showThirdLine: false },
+  comfortable: { itemHeight: 96, lines: 'three', showSubjectLine: true, showThirdLine: true },
+}
+
+// Width of the message list panel, as a percentage of the split area. Only applies to
+// the side-by-side (vertical reading pane) view; future layout views own their own sizing.
+export type MessageListWidth = 25 | 35 | 50
+
+export const messageListWidthOptions = [
+  { value: 25, title: 'Narrow' },
+  { value: 35, title: 'Medium' },
+  { value: 50, title: 'Wide' },
+]
+
 export const messageReadDelayOptions = [
   { value: 2, title: '2 seconds' },
   { value: 5, title: '5 seconds' },
@@ -42,6 +75,14 @@ function normalizeFolderViewMode(value: unknown, fallback: FolderViewMode): Fold
   return value === 'tree' || value === 'page' ? value : fallback
 }
 
+function normalizeMessageListDensity(value: unknown, fallback: MessageListDensity): MessageListDensity {
+  return value === 'compact' || value === 'cozy' || value === 'comfortable' ? value : fallback
+}
+
+function normalizeMessageListWidth(value: unknown, fallback: MessageListWidth): MessageListWidth {
+  return value === 25 || value === 35 || value === 50 ? value : fallback
+}
+
 export const useMailSettingsStore = defineStore('mailSettingsStore', () => {
   const userStore = useUserStore()
 
@@ -66,8 +107,26 @@ export const useMailSettingsStore = defineStore('mailSettingsStore', () => {
     ),
   })
 
+  const messageListDensity = computed({
+    get: () => normalizeMessageListDensity(userStore.getSetting(MESSAGE_LIST_DENSITY_KEY), DEFAULT_MESSAGE_LIST_DENSITY),
+    set: (value: MessageListDensity) => userStore.setSetting(
+      MESSAGE_LIST_DENSITY_KEY,
+      normalizeMessageListDensity(value, DEFAULT_MESSAGE_LIST_DENSITY),
+    ),
+  })
+
+  const messageListWidth = computed({
+    get: () => normalizeMessageListWidth(userStore.getSetting(MESSAGE_LIST_WIDTH_KEY), DEFAULT_MESSAGE_LIST_WIDTH),
+    set: (value: MessageListWidth) => userStore.setSetting(
+      MESSAGE_LIST_WIDTH_KEY,
+      normalizeMessageListWidth(value, DEFAULT_MESSAGE_LIST_WIDTH),
+    ),
+  })
+
   return {
     folderViewMode,
+    messageListDensity,
+    messageListWidth,
     messageReadEnabled,
     messageReadDelay,
   }

src/stores/mailUiStore.ts

@@ -1,18 +1,21 @@
 import { computed, ref, shallowRef, watch } from 'vue'
 import { defineStore } from 'pinia'
 import { useCollectionsStore } from '@MailManager/stores/collectionsStore'
-import { useMailStore } from '@/stores/mailStore'
+import { useMailOperationsStore } from '@/stores/mailOperationsStore'
 import { useMailSettingsStore } from '@/stores/mailSettingsStore'
 import { ComposerMode } from '@/types/composer'
 import type { ServiceIdentifier, EntityIdentifier } from '@MailManager/types/common'
 import { EntityObject, type ServiceObject } from '@MailManager/models'
 import type { CollectionObject } from '@MailManager/models/collection'
+import type { MessageInterface } from '@MailManager/types/message'
 import type { MessageAddressInterface } from '@MailManager/types/message'
+import { useSnackbar } from '@KTXC'
 
 export const useMailUiStore = defineStore('mailUiStore', () => {
   const collectionsStore = useCollectionsStore()
-  const mailStore = useMailStore()
+  const mailOperationsStore = useMailOperationsStore()
   const mailSettingsStore = useMailSettingsStore()
+  const { showSnackbar } = useSnackbar()
 
   const sidebarVisible = ref(true)
   const settingsDialogVisible = ref(false)
@@ -95,7 +98,7 @@ export const useMailUiStore = defineStore('mailUiStore', () => {
   })
 
   watch(
-    () => mailStore.selectedMessage,
+    () => mailOperationsStore.selectedMessage,
     message => {
       if (message) {
         closeComposer()
@@ -106,12 +109,24 @@ export const useMailUiStore = defineStore('mailUiStore', () => {
   )
 
   watch(
-    () => mailStore.currentMessages,
+    () => mailOperationsStore.currentMessages,
     () => {
       messageSelectionReconcile()
     },
   )
 
+  async function initialize() {
+    await mailOperationsStore.initialize()
+
+    if (!selectedFolder.value) {
+      const inbox = mailOperationsStore.findFoldersByRole('inbox')[0] ?? null
+
+      if (inbox) {
+        await selectFolder(inbox)
+      }
+    }
+  }
+
   function sidebarToggle() {
     sidebarVisible.value = !sidebarVisible.value
   }
@@ -128,6 +143,52 @@ export const useMailUiStore = defineStore('mailUiStore', () => {
     settingsDialogVisible.value = false
   }
 
+  function notify(message: string, color: 'success' | 'error' | 'info' | 'warning' = 'success') {
+    showSnackbar({ message, color })
+  }
+
+  function notifyDeleteMessagesResult(successes: number, failures: number) {
+    if (failures === 0) {
+      notify(successes === 1 ? 'Message deleted' : `${successes} messages deleted`, 'success')
+      return
+    }
+
+    notify(
+      successes === 0
+        ? `Delete failed for ${failures === 1 ? '1 message' : `${failures} messages`}`
+        : `Deleted ${successes} ${successes === 1 ? 'message' : 'messages'}. ${failures} failed.`,
+      successes === 0 ? 'error' : 'warning',
+    )
+  }
+
+  function notifyFlagMessagesResult(successes: number, failures: number) {
+    if (failures === 0) {
+      notify(successes === 1 ? 'Message updated' : `${successes} messages updated`, 'success')
+      return
+    }
+
+    notify(
+      successes === 0
+        ? `Update failed for ${failures === 1 ? '1 message' : `${failures} messages`}`
+        : `Updated ${successes} ${successes === 1 ? 'message' : 'messages'}. ${failures} failed.`,
+      successes === 0 ? 'error' : 'warning',
+    )
+  }
+
+  function notifyMoveMessagesResult(successes: number, failures: number) {
+    if (failures === 0) {
+      notify(successes === 1 ? 'Message moved' : `${successes} messages moved`, 'success')
+      return
+    }
+
+    notify(
+      successes === 0
+        ? `Move failed for ${failures === 1 ? '1 message' : `${failures} messages`}`
+        : `Moved ${successes} ${successes === 1 ? 'message' : 'messages'}. ${failures} failed.`,
+      successes === 0 ? 'error' : 'warning',
+    )
+  }
+
   function _sameCollection(left: CollectionObject | null | undefined, right: CollectionObject | null | undefined): boolean {
     if (!left || !right) {
       return false
@@ -138,25 +199,13 @@ export const useMailUiStore = defineStore('mailUiStore', () => {
       String(left.identifier) === String(right.identifier)
   }
 
-  async function initialize() {
-    await mailStore.initialize()
-
-    if (!selectedFolder.value) {
-      const inbox = mailStore.findFoldersByRole('inbox')[0] ?? null
-
-      if (inbox) {
-        await selectFolder(inbox)
-      }
-    }
-  }
-
   async function selectFolder(folder: CollectionObject | null) {
     closeComposer()
     messageSelectionModeDeactivate()
     clearMessageReadTimer()
     selectedMessage.value = null
     selectedFolder.value = folder
-    await mailStore.selectFolder(folder)
+    await mailOperationsStore.selectFolder(folder)
   }
 
   async function selectMessage(message: EntityObject | null) {
@@ -200,7 +249,7 @@ export const useMailUiStore = defineStore('mailUiStore', () => {
   async function completeMessageRead(identifier: EntityIdentifier) {
     try {
       if (selectedMessage.value && selectedMessage.value.identifier === identifier && selectedMessage.value.properties.isRead === false) {
-        await mailStore.flagMessages([selectedMessage.value.identifier], { read: true }, { notify: false })
+        await flagMessages([selectedMessage.value.identifier], { seen: true }, { notify: false })
       }
     } catch (error) {
       console.error('[Mail][UI] Failed to auto-mark message as read:', error)
@@ -236,7 +285,8 @@ export const useMailUiStore = defineStore('mailUiStore', () => {
     createFolderDialogError.value = ''
 
     try {
-      const folder = await mailStore.createFolder(service, label, createFolderDialogParent.value)
+      const folder = await mailOperationsStore.createFolder(service, label, createFolderDialogParent.value)
+      notify(`Folder "${folder.properties.label || label.trim()}" created`, 'success')
       closeCreateFolderDialog()
       return folder
     } catch (error) {
@@ -248,7 +298,7 @@ export const useMailUiStore = defineStore('mailUiStore', () => {
   }
 
   async function openRenameFolderDialog(target: CollectionObject) {
-    const service = await mailStore.retrieveService(target.service)
+    const service = await mailOperationsStore.retrieveService(target.service)
     renameFolderDialogService.value = service
     renameFolderDialogFolder.value = target
     renameFolderDialogError.value = ''
@@ -275,12 +325,17 @@ export const useMailUiStore = defineStore('mailUiStore', () => {
     renameFolderDialogError.value = ''
 
     try {
-      const updatedFolder = await mailStore.renameFolder(folder, label)
+      const updatedFolder = await mailOperationsStore.renameFolder(folder, label)
 
       if (_sameCollection(selectedFolder.value, folder)) {
         selectedFolder.value = updatedFolder
       }
 
+      notify(
+        `Folder "${folder.properties.label || String(folder.identifier)}" renamed to "${updatedFolder.properties.label || label.trim()}"`,
+        'success',
+      )
+
       closeRenameFolderDialog()
       return updatedFolder
     } catch (error) {
@@ -292,7 +347,7 @@ export const useMailUiStore = defineStore('mailUiStore', () => {
   }
 
   async function openMoveFolderDialog(source: CollectionObject) {
-    const service = await mailStore.retrieveService(source.service)
+    const service = await mailOperationsStore.retrieveService(source.service)
     moveFolderDialogService.value = service
     moveFolderDialogSource.value = source
     moveFolderDialogVisible.value = true
@@ -311,18 +366,23 @@ export const useMailUiStore = defineStore('mailUiStore', () => {
       return null
     }
 
-    const movedFolder = await mailStore.moveFolder(source, target)
+    const movedFolder = await mailOperationsStore.moveFolder(source, target)
 
     if (_sameCollection(selectedFolder.value, source)) {
       selectedFolder.value = movedFolder
     }
 
+    notify(
+      `Folder "${source.properties.label || String(source.identifier)}" moved to "${target.properties.label || String(target.identifier)}"`,
+      'success',
+    )
+
     closeMoveFolderDialog()
     return movedFolder
   }
 
   async function openDeleteFolderDialog(target: CollectionObject) {
-    const service = await mailStore.retrieveService(target.service)
+    const service = await mailOperationsStore.retrieveService(target.service)
     deleteFolderDialogService.value = service
     deleteFolderDialogFolder.value = target
     deleteFolderDialogError.value = ''
@@ -349,13 +409,14 @@ export const useMailUiStore = defineStore('mailUiStore', () => {
     deleteFolderDialogError.value = ''
 
     try {
-      const deleted = await mailStore.deleteFolder(folder)
+      const deleted = await mailOperationsStore.deleteFolder(folder)
 
       if (_sameCollection(selectedFolder.value, folder)) {
         selectFolder(null)
-        
       }
 
+      notify(`Folder "${folder.properties.label || String(folder.identifier)}" deleted`, 'success')
+
       closeDeleteFolderDialog()
       return deleted
     } catch (error) {
@@ -452,7 +513,7 @@ export const useMailUiStore = defineStore('mailUiStore', () => {
   }
 
   function openComposer(source?: EntityObject | MessageAddressInterface, mode: ComposerMode = ComposerMode.Fresh) {
-    mailStore.selectMessage(null)
+    mailOperationsStore.selectMessage(null)
     composerSource.value = source ?? null
     composerMode.value = mode
     composerVisible.value = true
@@ -503,7 +564,7 @@ export const useMailUiStore = defineStore('mailUiStore', () => {
   function messageSelectionToggleAll(value: boolean) {
     selectionMode.value = true
     if (value) {
-      setSelectionList(mailStore.currentMessages.map(message => message.identifier))
+      setSelectionList(mailOperationsStore.currentMessages.map(message => message.identifier))
     } else {
       setSelectionList([])
     }
@@ -515,7 +576,7 @@ export const useMailUiStore = defineStore('mailUiStore', () => {
       return
     }
 
-    const currentMessageIdentifiers = new Set(mailStore.currentMessages.map(message => message.identifier))
+    const currentMessageIdentifiers = new Set(mailOperationsStore.currentMessages.map(message => message.identifier))
     const nextSelectedIds = selectionList.value.filter(identifier => currentMessageIdentifiers.has(identifier))
 
     if (nextSelectedIds.length !== selectionList.value.length) {
@@ -545,7 +606,7 @@ export const useMailUiStore = defineStore('mailUiStore', () => {
       moveMessagesServiceIdentifier = selectedFolder.value?.service as ServiceIdentifier || null
     }
 
-    moveMessagesDialogService.value = await mailStore.retrieveService(moveMessagesServiceIdentifier)
+    moveMessagesDialogService.value = await mailOperationsStore.retrieveService(moveMessagesServiceIdentifier)
     moveMessagesDialogVisible.value = true
   }
 
@@ -555,22 +616,104 @@ export const useMailUiStore = defineStore('mailUiStore', () => {
     moveMessagesDialogCandidates.value = null
   }
 
-  async function confirmMoveMessages(targetIdentifier: Parameters<typeof mailStore.moveMessages>[0]) {
-    await mailStore.moveMessages(targetIdentifier, moveMessagesDialogCandidates.value ?? [])
+  async function confirmMoveMessages(targetIdentifier: Parameters<typeof mailOperationsStore.moveMessages>[0]) {
+    await moveMessages(targetIdentifier, moveMessagesDialogCandidates.value ?? [])
     messageSelectionModeDeactivate()
     closeMoveMessagesDialog()
   }
 
   async function deleteSelectedMessages() {
-    await mailStore.deleteMessages([...selectionList.value])
+    await deleteMessages([...selectionList.value])
     messageSelectionModeDeactivate()
   }
 
   async function flagSelectedMessages(flag: string, value: boolean) {
-    await mailStore.flagMessages([...selectionList.value],  { [flag]: value })
+    await flagMessages([...selectionList.value], { [flag]: value })
     messageSelectionModeDeactivate()
   }
 
+  async function deleteMessages(entityIdentifiers: EntityIdentifier[]) {
+    try {
+      const result = await mailOperationsStore.deleteMessages(entityIdentifiers)
+
+      if (!result) {
+        return null
+      }
+
+      notifyDeleteMessagesResult(result.successes.length, result.failures.length)
+      return result
+    } catch (error) {
+      const messageText = error instanceof Error ? error.message : 'Failed to delete messages'
+      notify(messageText, 'error')
+      throw error
+    }
+  }
+
+  async function flagMessages(
+    entityIdentifiers: EntityIdentifier[],
+    flags: Partial<NonNullable<MessageInterface['flags']>>,
+    options: { notify?: boolean } = {},
+  ) {
+    try {
+      const result = await mailOperationsStore.flagMessages(entityIdentifiers, flags)
+
+      if (!result) {
+        return null
+      }
+
+      if (options.notify ?? true) {
+        notifyFlagMessagesResult(result.successes.length, result.failures.length)
+      }
+
+      return result
+    } catch (error) {
+      const messageText = error instanceof Error ? error.message : 'Failed to update messages'
+      if (options.notify ?? true) {
+        notify(messageText, 'error')
+      }
+      throw error
+    }
+  }
+
+  async function flagMessage(entity: EntityObject, flag: string, value: boolean) {
+    return await flagMessages([entity.identifier], { [flag]: value })
+  }
+
+  async function moveMessages(target: CollectionObject, entityIdentifiers: EntityIdentifier[]) {
+    try {
+      const result = await mailOperationsStore.moveMessages(target, entityIdentifiers)
+
+      if (!result) {
+        return null
+      }
+
+      notifyMoveMessagesResult(result.successes.length, result.failures.length)
+      return result
+    } catch (error) {
+      const messageText = error instanceof Error ? error.message : 'Failed to move messages'
+      notify(messageText, 'error')
+      throw error
+    }
+  }
+
+  async function downloadMessage(entity: EntityObject, index?: number) {
+    try {
+      await mailOperationsStore.downloadMessage(entity, index)
+    } catch (error) {
+      const messageText = error instanceof Error
+        ? error.message
+        : index === undefined
+          ? 'Failed to download message'
+          : 'Failed to download attachment'
+      notify(messageText, 'error')
+      throw error
+    }
+  }
+
+  function attachmentBlob(entity: EntityObject, part: Parameters<typeof mailOperationsStore.attachmentBlob>[1]) {
+    return mailOperationsStore.attachmentBlob(entity, part)
+  }
+
   return {
     sidebarVisible,
     settingsDialogVisible,
@@ -605,14 +748,21 @@ export const useMailUiStore = defineStore('mailUiStore', () => {
     deleteFolderDialogFolder,
     deleteFolderDialogLoading,
     deleteFolderDialogError,
+    initialize,
     sidebarToggle,
     sidebarHide,
     settingsOpen,
     settingsClose,
-    initialize,
+    notify,
     selectFolder,
     openComposer,
     closeComposer,
+    deleteMessages,
+    flagMessages,
+    flagMessage,
+    moveMessages,
+    downloadMessage,
+    attachmentBlob,
     messageSelectionModeActivate,
     messageSelectionModeDeactivate,
     messageSelectionToggleOne,

src/style.css

@@ -3,7 +3,8 @@
 .mail-container {
   display: flex;
   flex-direction: column;
-  height: 100vh;
+  height: 100%;
+  min-height: 0;
   isolation: isolate;
 }
 
@@ -14,6 +15,7 @@
 .mail-content {
   display: flex;
   flex: 1;
+  min-height: 0;
   overflow: hidden;
   position: relative;
 }
@@ -25,6 +27,7 @@
 
 .mail-main {
   flex: 1;
+  min-height: 0;
   display: flex;
   overflow: hidden;
   min-width: 0;
@@ -32,6 +35,8 @@
 
 .mail-wrapper {
   flex: 1;
+  min-height: 0;
+  min-width: 0;
   display: flex;
   overflow: hidden;
 }

src/types/composer.ts

@@ -1,5 +1,48 @@
+import type { ServiceObject } from "@MailManager/models/service"
+import type { EntityIdentifier } from "@MailManager/types/common"
+import type { MessageAddressInterface } from "@MailManager/types/message"
+
 export enum ComposerMode {
-	Fresh,
-	Reply,
-	Forward,
+  Fresh = 'fresh',
+  Reply = 'reply',
+  Forward = 'forward',
+}
+
+export interface ComposerDraftAttachment {
+  identifier: string
+  composition: string
+  origin: 'source' | 'upload'
+  name: string
+  type: string
+  size: number
+  source: EntityIdentifier | null
+}
+
+export interface ComposerDraftMessage {
+  to: MessageAddressInterface[]
+  cc: MessageAddressInterface[]
+  bcc: MessageAddressInterface[]
+  subject: string
+  body: {
+	html: string
+	text: string
+  }
+}
+
+export interface ComposerDraft {
+  action: ComposerMode
+  identifier: string
+  revision: number
+  sender: ComposerSenderIdentity
+  source: EntityIdentifier | null
+  stageStatus: 'local' | 'staged'
+  stagedAt: Date | null
+  message: ComposerDraftMessage
+  attachments: Record<string, ComposerDraftAttachment>
+}
+
+export interface ComposerSenderIdentity { 
+  service: ServiceObject
+  address: string
+  label: string | null
 }

src/types/composition.ts

@@ -0,0 +1,119 @@
+import type { EntityIdentifier } from '@MailManager/types/common'
+import type { MessageAddressInterface } from '@MailManager/types/message'
+
+export interface CompositionSenderInterface {
+  provider: string
+  service: string | number | null
+  address: string
+  name: string | null
+}
+
+export interface CompositionMessageInterface {
+  to: MessageAddressInterface[]
+  cc: MessageAddressInterface[]
+  bcc: MessageAddressInterface[]
+  subject: string
+  body: {
+    text: string
+    html: string
+  }
+}
+
+export interface CompositionAttachmentInterface {
+  identifier: string
+  composition: string
+  origin: 'source' | 'upload'
+  name: string
+  type: string
+  size: number
+  source: EntityIdentifier | null
+  data?: string
+}
+
+export interface CompositionStageRequest {
+  identifier: string
+  action: 'fresh' | 'reply' | 'forward'
+  sender: CompositionSenderInterface
+  source?: EntityIdentifier | null
+  message: CompositionMessageInterface
+}
+
+export interface CompositionStageResponse {
+  identifier: string
+  revision: number
+  disposition: 'staged'
+  attachments: Record<string, CompositionAttachmentInterface>
+}
+
+export interface CompositionPatchRequest {
+  identifier: string
+  revision: number
+  sender: CompositionSenderInterface
+  message: CompositionMessageInterface
+}
+
+export interface CompositionPatchResponse {
+  identifier: string
+  revision: number
+  message: CompositionMessageInterface
+}
+
+export interface CompositionDiscardRequest {
+  identifier: string
+}
+
+export interface CompositionDiscardResponse {
+  identifier: string
+  disposition: 'discarded' | 'error'
+  error?: {
+    type: string
+    message: string
+  }
+}
+
+export interface CompositionSendRequest {
+  identifier: string
+  revision: number
+  sender: CompositionSenderInterface
+  message: CompositionMessageInterface
+  attachments: Record<string, CompositionAttachmentInterface>
+}
+
+export interface CompositionSendResponse {
+  identifier: string
+  disposition: 'sent' | 'error'
+  error?: {
+    type: string
+    message: string
+  }
+}
+
+export interface CompositionAttachmentAddRequest {
+  composition: string
+  attachments: Record<string, CompositionAttachmentInterface>
+}
+
+export interface CompositionAttachmentAddResponse {
+  disposition: 'added' | 'error'
+  error?: {
+    type: string
+    message: string
+  }
+  composition: string
+  attachments: Record<string, CompositionAttachmentInterface>
+}
+
+export interface CompositionAttachmentRemoveRequest {
+  composition: string
+  identifier: string
+}
+
+export interface CompositionAttachmentRemoveResponse {
+  disposition: 'removed' | 'error'
+  error?: {
+    type: string
+    message: string
+  }
+  composition: string
+  identifier: string
+}

src/types/mediaViewer.ts

@@ -0,0 +1,9 @@
+import type { MessagePartInterface } from "@MailManager/types/message"
+
+export interface MediaViewerItem {
+  id: string
+  title: string
+  mime: string
+  size?: number | null
+  meta: { index: number; attachment: MessagePartInterface }
+}

src/utile/format.ts

@@ -0,0 +1,21 @@
+export function formatFileSize(bytes: number | null | undefined): string {
+  if (bytes == null || !Number.isFinite(bytes)) {
+    return ''
+  }
+
+  if (bytes < 1024) {
+    return `${Math.max(0, Math.round(bytes))} B`
+  }
+
+  const units = ['KB', 'MB', 'GB', 'TB']
+  let value = bytes / 1024
+  let unitIndex = 0
+
+  while (value >= 1024 && unitIndex < units.length - 1) {
+    value /= 1024
+    unitIndex += 1
+  }
+
+  const precision = value >= 10 || unitIndex === 0 ? 1 : 2
+  return `${value.toFixed(precision)} ${units[unitIndex]}`
+}

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 +1,33 @@
+import { fileURLToPath } from 'node:url'
+import { defineConfig, configDefaults } from 'vitest/config'
+import vue from '@vitejs/plugin-vue'
+import path from 'path'
+
+const __filename = fileURLToPath(import.meta.url)
+const __dirname = path.dirname(__filename)
+
+export default defineConfig({
+  plugins: [vue()],
+  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\Mail\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\Mail\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).'/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="../../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>

tsconfig.app.json

@@ -3,9 +3,12 @@
   "include": [
     "src/**/*",
     "src/**/*.vue",
+    "src/utile/**/*.ts",
     "../../core/src/**/*.ts",
     "../mail_manager/src/**/*.ts",
-    "../mail_manager/src/**/*.vue"
+    "../mail_manager/src/**/*.vue",
+    "../people_manager/src/**/*.ts",
+    "../people_manager/src/**/*.vue"
   ],
   "exclude": ["src/**/__tests__/*"],
   "compilerOptions": {
@@ -14,7 +17,8 @@
       "@/*": ["./src/*"],
       "@KTXC": ["../../core/src/shared/index.ts"],
       "@KTXC/*": ["../../core/src/*"],
-      "@MailManager/*": ["../mail_manager/src/*"]
+      "@MailManager/*": ["../mail_manager/src/*"],
+      "@PeopleManager/*": ["../people_manager/src/*"]
     }
   }
 }

vite.config.ts

@@ -31,6 +31,7 @@ export default defineConfig({
       '@': path.resolve(__dirname, './src'),
       '@KTXC': path.resolve(__dirname, '../../core/src'),
       '@MailManager': path.resolve(__dirname, '../mail_manager/src'),
+      '@PeopleManager': path.resolve(__dirname, '../people_manager/src'),
     },
   },
   build: {
@@ -49,6 +50,7 @@ export default defineConfig({
         'pinia',
         '@KTXC',
         /^@MailManager\//,
+        /^@PeopleManager\//,
       ],
       output: {
         paths: (id) => {
@@ -56,6 +58,9 @@ export default defineConfig({
           if (id.startsWith('@MailManager/')) {
             return '/modules/mail_manager/static/module.mjs'
           }
+          if (id.startsWith('@PeopleManager/')) {
+            return '/modules/people_manager/static/module.mjs'
+          }
           return id
         },
         assetFileNames: (assetInfo) => {