diff --git a/.gitea/workflows/cron.yaml b/.gitea/workflows/cron.yaml
index cda5d0b..6c930c8 100644
--- a/.gitea/workflows/cron.yaml
+++ b/.gitea/workflows/cron.yaml
@@ -18,11 +18,60 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
-      - uses: docker/setup-buildx-action@f87e5991a6d7451dcb8d9637bfbc97413f497069 # v4
-      - run: docker build -f pkg/Dockerfile -t ci-image:${{ github.sha }} .
+      - uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7
+        with:
+          python-version: "3.13"
+      - name: Install dependencies
+        run: pip install -r requirements.txt pytest
+      - name: Run unit tests
+        run: pytest tests/ -v
+        env:
+          # indexer/server read env at import; unit tests need no real backend
+          QDRANT_URL: http://localhost:6333
+          COLLECTION_NAME: test
+
+  integration-test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
+
+      - name: Cleanup old Qdrant container
+        run: |
+          docker rm -f mcp-maildir-ci-qdrant 2>/dev/null || true
+
+      - name: Start Qdrant
+        run: |
+          docker run -d --name mcp-maildir-ci-qdrant \
+            --network "container:$(hostname)" \
+            docker.io/qdrant/qdrant:latest
+
+      - name: Wait for Qdrant
+        run: |
+          for i in $(seq 1 30); do
+            curl -s http://localhost:6333/healthz \
+              && echo "QDRANT ready" && break
+            echo "Waiting for Qdrant... ($i/30)"
+            sleep 1
+          done
+          curl -s http://localhost:6333/healthz > /dev/null
+
+      - uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7
+        with:
+          python-version: "3.13"
+      - name: Install dependencies
+        run: pip install -r requirements.txt pytest
+      - name: Run integration tests
+        run: pytest tests/ -v -m integration
+        env:
+          QDRANT_URL: http://localhost:6333
+          COLLECTION_NAME: test_mcp_maildir
+
+      - name: Cleanup Qdrant
+        if: always()
+        run: docker rm -f mcp-maildir-ci-qdrant || true
 
   build-push:
-    needs: [test]
+    needs: [test, integration-test]
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
diff --git a/.gitea/workflows/main.yaml b/.gitea/workflows/main.yaml
index fecf74b..db628e9 100644
--- a/.gitea/workflows/main.yaml
+++ b/.gitea/workflows/main.yaml
@@ -18,11 +18,60 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
-      - uses: docker/setup-buildx-action@f87e5991a6d7451dcb8d9637bfbc97413f497069 # v4
-      - run: docker build -f pkg/Dockerfile -t ci-image:${{ github.sha }} .
+      - uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7
+        with:
+          python-version: "3.13"
+      - name: Install dependencies
+        run: pip install -r requirements.txt pytest
+      - name: Run unit tests
+        run: pytest tests/ -v
+        env:
+          # indexer/server read env at import; unit tests need no real backend
+          QDRANT_URL: http://localhost:6333
+          COLLECTION_NAME: test
+
+  integration-test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
+
+      - name: Cleanup old Qdrant container
+        run: |
+          docker rm -f mcp-maildir-ci-qdrant 2>/dev/null || true
+
+      - name: Start Qdrant
+        run: |
+          docker run -d --name mcp-maildir-ci-qdrant \
+            --network "container:$(hostname)" \
+            docker.io/qdrant/qdrant:latest
+
+      - name: Wait for Qdrant
+        run: |
+          for i in $(seq 1 30); do
+            curl -s http://localhost:6333/healthz \
+              && echo "QDRANT ready" && break
+            echo "Waiting for Qdrant... ($i/30)"
+            sleep 1
+          done
+          curl -s http://localhost:6333/healthz > /dev/null
+
+      - uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7
+        with:
+          python-version: "3.13"
+      - name: Install dependencies
+        run: pip install -r requirements.txt pytest
+      - name: Run integration tests
+        run: pytest tests/ -v -m integration
+        env:
+          QDRANT_URL: http://localhost:6333
+          COLLECTION_NAME: test_mcp_maildir
+
+      - name: Cleanup Qdrant
+        if: always()
+        run: docker rm -f mcp-maildir-ci-qdrant || true
 
   build:
-    needs: [test]
+    needs: [test, integration-test]
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
diff --git a/.gitea/workflows/pr.yaml b/.gitea/workflows/pr.yaml
index 48735fa..47e08fd 100644
--- a/.gitea/workflows/pr.yaml
+++ b/.gitea/workflows/pr.yaml
@@ -14,9 +14,25 @@ jobs:
         with:
           dockerfile: pkg/Dockerfile
 
+  pytest:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
+      - uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7
+        with:
+          python-version: "3.13"
+      - name: Install dependencies
+        run: pip install -r requirements.txt pytest
+      - name: Run unit tests
+        run: pytest tests/ -v
+        env:
+          # indexer/server read env at import; unit tests need no real backend
+          QDRANT_URL: http://localhost:6333
+          COLLECTION_NAME: test
+
   build-test:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
       - uses: docker/setup-buildx-action@f87e5991a6d7451dcb8d9637bfbc97413f497069 # v4
-      - run: docker build -f pkg/Dockerfile -t ci-image:${{ github.sha }} .
\ No newline at end of file
+      - run: docker build -f pkg/Dockerfile -t ci-image:${{ github.sha }} .
diff --git a/.gitea/workflows/tag.yaml b/.gitea/workflows/tag.yaml
index b90cfcd..6458f7b 100644
--- a/.gitea/workflows/tag.yaml
+++ b/.gitea/workflows/tag.yaml
@@ -18,11 +18,60 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
-      - uses: docker/setup-buildx-action@f87e5991a6d7451dcb8d9637bfbc97413f497069 # v4
-      - run: docker build -f pkg/Dockerfile -t ci-image:${{ github.sha }} .
+      - uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7
+        with:
+          python-version: "3.13"
+      - name: Install dependencies
+        run: pip install -r requirements.txt pytest
+      - name: Run unit tests
+        run: pytest tests/ -v
+        env:
+          # indexer/server read env at import; unit tests need no real backend
+          QDRANT_URL: http://localhost:6333
+          COLLECTION_NAME: test
+
+  integration-test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
+
+      - name: Cleanup old Qdrant container
+        run: |
+          docker rm -f mcp-maildir-ci-qdrant 2>/dev/null || true
+
+      - name: Start Qdrant
+        run: |
+          docker run -d --name mcp-maildir-ci-qdrant \
+            --network "container:$(hostname)" \
+            docker.io/qdrant/qdrant:latest
+
+      - name: Wait for Qdrant
+        run: |
+          for i in $(seq 1 30); do
+            curl -s http://localhost:6333/healthz \
+              && echo "QDRANT ready" && break
+            echo "Waiting for Qdrant... ($i/30)"
+            sleep 1
+          done
+          curl -s http://localhost:6333/healthz > /dev/null
+
+      - uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7
+        with:
+          python-version: "3.13"
+      - name: Install dependencies
+        run: pip install -r requirements.txt pytest
+      - name: Run integration tests
+        run: pytest tests/ -v -m integration
+        env:
+          QDRANT_URL: http://localhost:6333
+          COLLECTION_NAME: test_mcp_maildir
+
+      - name: Cleanup Qdrant
+        if: always()
+        run: docker rm -f mcp-maildir-ci-qdrant || true
 
   build-push:
-    needs: [test]
+    needs: [test, integration-test]
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7