Add Sentry, Pino logs, and OTel spans on WS pipeline (M2).

Capture REST/WS/SSE errors in Sentry, emit structured pino logs with correlation IDs, and trace the book-tick pipeline to Sentry via OpenTelemetry.

Co-authored-by: Cursor <cursoragent@cursor.com>

.github/workflows/codeql.yml

@@ -0,0 +1,30 @@
+name: CodeQL Security Scan
+
+on:
+  push:
+    branches: [main, dev]
+  pull_request:
+    branches: [main, dev]
+  schedule:
+    - cron: "0 8 * * 1"
+
+jobs:
+  analyze:
+    name: Analyze
+    runs-on: ubuntu-latest
+    permissions:
+      actions: read
+      contents: read
+      security-events: write
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: github/codeql-action/init@v3
+        with:
+          languages: javascript-typescript
+          queries: security-extended
+
+      - uses: github/codeql-action/autobuild@v3
+
+      - uses: github/codeql-action/analyze@v3

.github/workflows/e2e.yml

@@ -0,0 +1,45 @@
+name: E2E Smoke
+
+on:
+  push:
+    branches: [main, dev]
+  pull_request:
+    branches: [main, dev]
+
+jobs:
+  smoke:
+    name: Playwright dashboard + SSE
+    runs-on: ubuntu-latest
+    env:
+      DEMO_MODE: "true"
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-node@v4
+        with:
+          node-version: "20"
+          cache: npm
+          cache-dependency-path: |
+            package-lock.json
+            web/package-lock.json
+
+      - run: npm ci
+      - run: npm --prefix web ci
+      - run: npm run build
+
+      - name: Start server
+        run: npm start &
+
+      - name: Wait for API
+        run: |
+          for i in $(seq 1 45); do
+            curl -sf http://localhost:8080/api/health > /dev/null && echo "Ready after ${i}s" && exit 0
+            sleep 1
+          done
+          echo "::error::Server did not become ready in 45s" && exit 1
+
+      - run: npx playwright install --with-deps chromium
+
+      - name: Run smoke tests
+        run: npm run test:e2e