chore: add integration tests with real Qdrant instance

- Integration tests for search_emails and read_email against live Qdrant
- Indexes 3 test emails, tests search by content/participant/date
- CI: new 'integration-test' job with qdrant service, runs before build
- Unit test job ignores integration test file

.gitea/workflows/docker-build.yaml

@@ -20,11 +20,33 @@ jobs:
         run: |
           pip install -r requirements.txt pytest
       - name: Run unit tests
-        run: pytest tests/ -v
+        run: pytest tests/ -v --ignore=tests/test_integration.py
+
+  integration-test:
+    runs-on: ubuntu-latest
+    services:
+      qdrant:
+        image: docker.io/qdrant/qdrant:latest
+        ports:
+          - 6333:6333
+          - 6334:6334
+    steps:
+      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6
+      - uses: actions/setup-python@v6
+        with:
+          python-version: "3.13"
+      - name: Install dependencies
+        run: |
+          pip install -r requirements.txt pytest
+      - name: Run integration tests
+        run: pytest tests/test_integration.py -v
+        env:
+          QDRANT_URL: http://localhost:6333
+          COLLECTION_NAME: test_mcp_maildir
 
   build:
     runs-on: ubuntu-latest
-    needs: test
+    needs: [test, integration-test]
     steps:
       - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6
 
@@ -44,9 +66,6 @@ jobs:
         with:
           images: jcabillot/mcp-maildir
           tags: |
-            #type=ref,event=branch
-            #type=ref,event=pr
-            #type=sha
             type=raw,value=latest,enable=${{ github.ref == 'refs/heads/main' }}
 
       - name: Build and push