test: add full-stack Playwright integration test infrastructure

Sprint 12 Phase 2: Real integration tests with seed DB
- R__seed_test_data.sql (Flyway repeatable, 7 members, strains, batches, docs, board, events)
- TestResetController (profile-gated per-test DB reset)
- docker-compose.test.yml (self-contained, tmpfs Postgres)
- Dockerfile.playwright (v1.60.0, pre-installed deps)
- 13 integration spec files, 70+ test cases (@smoke + @full)
- seed-constants.ts, selectors.ts, api-client.ts test helpers

docker-compose.test.yml

@@ -1,46 +1,79 @@
-# System test profile — runs full stack with seed data + Playwright
-# Usage: docker compose -f docker-compose.test.yml up --abort-on-container-exit
-include:
-  - docker-compose.yml
-
+# Integration test profile — full stack with Flyway seed + Playwright
+# Usage: docker compose -f docker-compose.test.yml up --build --abort-on-container-exit
 services:
-  # Override db to include seed data
   db:
-    volumes:
-      - pgdata:/var/lib/postgresql/data
-      - ./scripts/seed/init.sql:/docker-entrypoint-initdb.d/99-seed.sql:ro
+    image: postgres:16-alpine
+    container_name: cannamanage-test-db
+    tmpfs:
+      - /var/lib/postgresql/data
+    environment:
+      POSTGRES_DB: cannamanage_test
+      POSTGRES_USER: cannamanage
+      POSTGRES_PASSWORD: cannamanage_test
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U cannamanage -d cannamanage_test"]
+      interval: 3s
+      timeout: 2s
+      retries: 10
 
-  # Seed container: waits for backend health, then validates readiness
-  seed:
-    image: curlimages/curl:latest
-    container_name: cannamanage-seed
+  backend:
+    build:
+      context: .
+      dockerfile: Dockerfile.backend
+    container_name: cannamanage-test-backend
+    environment:
+      SPRING_PROFILES_ACTIVE: test
+      SPRING_DATASOURCE_URL: jdbc:postgresql://db:5432/cannamanage_test
+      SPRING_DATASOURCE_USERNAME: cannamanage
+      SPRING_DATASOURCE_PASSWORD: cannamanage_test
+      CANNAMANAGE_SECURITY_JWT_SECRET: dGVzdC1zZWNyZXQtZm9yLWludGVncmF0aW9uLXRlc3RzLW9ubHktMzJjaGFycw==
+    depends_on:
+      db:
+        condition: service_healthy
+    healthcheck:
+      test: ["CMD", "wget", "--spider", "-q", "http://localhost:8080/actuator/health"]
+      interval: 5s
+      timeout: 3s
+      retries: 15
+      start_period: 30s
+
+  frontend:
+    build:
+      context: ./cannamanage-frontend
+      dockerfile: Dockerfile
+    container_name: cannamanage-test-frontend
+    environment:
+      NEXTAUTH_URL: http://localhost:3000
+      NEXTAUTH_SECRET: test-nextauth-secret-minimum-32-characters
+      BACKEND_URL: http://backend:8080
+      AUTH_URL: http://localhost:3000
     depends_on:
       backend:
         condition: service_healthy
-    entrypoint: /bin/sh
-    command: ["-c", "/seed/seed.sh"]
-    volumes:
-      - ./scripts/seed:/seed:ro
 
-  # Playwright system tests
   playwright:
-    image: mcr.microsoft.com/playwright:v1.52.0-noble
-    container_name: cannamanage-playwright
+    build:
+      context: ./cannamanage-frontend
+      dockerfile: Dockerfile.playwright
+    container_name: cannamanage-test-playwright
     working_dir: /app
     depends_on:
-      seed:
-        condition: service_completed_successfully
       frontend:
         condition: service_started
+      backend:
+        condition: service_healthy
     environment:
       BASE_URL: http://frontend:3000
+      API_URL: http://backend:8080
       CI: "true"
+    # Volume mount allows test iteration without rebuild
+    # (Dockerfile pre-installs deps; mount overrides test files only)
     volumes:
-      - ./cannamanage-frontend:/app
+      - ./cannamanage-frontend/e2e:/app/e2e:ro
     command: >
       sh -c "
-        echo 'Waiting for frontend to be ready...' &&
-        timeout 60 sh -c 'until wget -q -O /dev/null http://frontend:3000 2>/dev/null; do sleep 2; done' &&
-        echo 'Frontend ready — running system tests...' &&
-        npx playwright test e2e/system-test.spec.ts --reporter=list
+        echo 'Waiting for frontend...' &&
+        timeout 90 sh -c 'until wget -q -O /dev/null http://frontend:3000 2>/dev/null; do sleep 2; done' &&
+        echo 'Frontend ready — running integration tests...' &&
+        npx playwright test e2e/integration/ --reporter=html --grep @smoke
       "