feat: Add CI testing infrastructure with act_runner support

- Created scripts/test-ci-locally.sh to test Gitea Actions workflows locally using act_runner
- Created docker-compose.ci.yml for containerized CI test environment
- Updated .gitea/workflows/magnitude.yml to use docker-compose for CI
- Added scripts/README.md documenting the CI testing approach
- Created reusable test helpers in tests/playwright/

This allows developers to run the exact same workflow that CI runs, locally,
making it much easier to debug CI failures without push cycles.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

docker-compose.ci.yml

@@ -0,0 +1,90 @@
+# Simplified docker-compose for CI/CD environments
+# Only includes services needed for testing (excludes surrealmcp)
+
+services:
+  surrealdb:
+    image: surrealdb/surrealdb:latest
+    ports:
+      - "8000:8000"
+    command:
+      - start
+      - --log
+      - trace
+      - --user
+      - ${SURREALDB_USER:-root}
+      - --pass
+      - ${SURREALDB_PASS:-root}
+      - memory
+    healthcheck:
+      test: ["CMD", "curl", "-f", "http://localhost:8000/health"]
+      interval: 5s
+      timeout: 3s
+      retries: 10
+      start_period: 5s
+    environment:
+      - SURREAL_LOG=trace
+
+  nextjs:
+    image: node:20-alpine
+    working_dir: /app
+    ports:
+      - "3000:3000"
+    volumes:
+      - .:/app
+      - /app/node_modules
+      - /app/.next
+    environment:
+      - SURREALDB_URL=ws://surrealdb:8000/rpc
+      - SURREALDB_USER=${SURREALDB_USER:-root}
+      - SURREALDB_PASS=${SURREALDB_PASS:-root}
+      - SURREALDB_NS=${SURREALDB_NS:-ponderants}
+      - SURREALDB_DB=${SURREALDB_DB:-main}
+      - ATPROTO_CLIENT_ID=${ATPROTO_CLIENT_ID}
+      - ATPROTO_REDIRECT_URI=${ATPROTO_REDIRECT_URI}
+      - GOOGLE_API_KEY=${GOOGLE_API_KEY}
+      - DEEPGRAM_API_KEY=${DEEPGRAM_API_KEY}
+      - SURREAL_JWT_SECRET=${SURREAL_JWT_SECRET}
+      - TEST_BLUESKY_HANDLE=${TEST_BLUESKY_HANDLE}
+      - TEST_BLUESKY_PASSWORD=${TEST_BLUESKY_PASSWORD}
+      - ANTHROPIC_API_KEY=${ANTHROPIC_API_KEY}
+      - NODE_ENV=development
+    command: >
+      sh -c "
+        npm install -g pnpm &&
+        pnpm install --frozen-lockfile &&
+        pnpm dev
+      "
+    depends_on:
+      surrealdb:
+        condition: service_healthy
+    healthcheck:
+      test: ["CMD", "wget", "--spider", "-q", "http://localhost:3000"]
+      interval: 5s
+      timeout: 3s
+      retries: 20
+      start_period: 30s
+
+  magnitude:
+    image: mcr.microsoft.com/playwright:v1.49.1-noble
+    working_dir: /home/pwuser/app
+    user: pwuser
+    network_mode: "service:nextjs"
+    volumes:
+      - .:/home/pwuser/app
+      - /home/pwuser/app/node_modules
+    environment:
+      - TEST_BLUESKY_HANDLE=${TEST_BLUESKY_HANDLE}
+      - TEST_BLUESKY_PASSWORD=${TEST_BLUESKY_PASSWORD}
+      - ANTHROPIC_API_KEY=${ANTHROPIC_API_KEY}
+    command: >
+      sh -c "
+        npm install -g pnpm &&
+        pnpm install --frozen-lockfile &&
+        npx wait-on http://localhost:3000 --timeout 120000 &&
+        npx magnitude
+      "
+    depends_on:
+      nextjs:
+        condition: service_healthy
+    profiles:
+      - test