ci(extraction): add CI workflow for extraction-service (TS + Python)

- TypeScript job: pnpm build, vitest, tsc --noEmit
- Python job: ruff lint, pytest
- Triggers on services/extraction-service/** and packages/extraction/**

.github/workflows/ci-extraction-service.yml

@@ -0,0 +1,72 @@
+# CI for extraction-service (TypeScript + Python)
+# Triggers on changes to extraction-service or extraction package
+name: CI — Extraction Service
+
+on:
+  push:
+    branches: [main]
+    paths:
+      - 'services/extraction-service/**'
+      - 'packages/extraction/**'
+      - 'packages/errors/**'
+      - 'packages/cosmos/**'
+      - 'packages/config/**'
+      - 'packages/auth/**'
+      - 'packages/fastify-core/**'
+  pull_request:
+    branches: [main]
+    paths:
+      - 'services/extraction-service/**'
+      - 'packages/extraction/**'
+
+jobs:
+  typescript:
+    name: TypeScript (build + test)
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: pnpm/action-setup@v4
+        with:
+          version: 10
+
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 22
+          cache: pnpm
+
+      - run: pnpm install --frozen-lockfile
+
+      - name: Build packages + service
+        run: pnpm -r --filter @lysnrai/extraction-service... build
+
+      - name: Run tests
+        run: pnpm --filter @lysnrai/extraction-service test
+
+      - name: Type check
+        run: pnpm --filter @lysnrai/extraction-service exec tsc --noEmit
+
+  python:
+    name: Python sidecar (lint + test)
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: services/extraction-service/python
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-python@v5
+        with:
+          python-version: '3.12'
+
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install -r requirements.txt
+          pip install pytest pytest-asyncio httpx ruff
+
+      - name: Lint
+        run: ruff check src/ tests/
+
+      - name: Test
+        run: python -m pytest tests/ -v --tb=short