Initial scaffold: FocusFlow ADHD Task Manager backend

Dart Shelf API with modules: auth (JWT + PBKDF2), tasks (CRUD + dopamine scorer),
streaks (forgiveness + freeze), rewards (variable reward engine), time perception,
sync (offline-first push/pull), rooms (body doubling placeholder).
Includes DB migration (001_initial_schema.sql) and Docker Compose.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

docker-compose.yml

@@ -0,0 +1,61 @@
+services:
+  api:
+    build:
+      context: .
+      dockerfile: Dockerfile
+    ports:
+      - "8081:8081"
+    environment:
+      - PORT=8081
+      - DATABASE_URL=postgresql://focusflow:focusflow@postgres:5432/focusflow
+      - REDIS_URL=redis://redis:6379
+      - JWT_SECRET=${JWT_SECRET:-dev-secret-change-in-production}
+      - APP_ENV=development
+    depends_on:
+      postgres:
+        condition: service_healthy
+      redis:
+        condition: service_healthy
+    restart: unless-stopped
+    healthcheck:
+      test: ["CMD", "curl", "-f", "http://localhost:8081/health"]
+      interval: 30s
+      timeout: 5s
+      retries: 3
+      start_period: 10s
+
+  postgres:
+    image: postgres:16-alpine
+    ports:
+      - "5433:5432"
+    environment:
+      POSTGRES_DB: focusflow
+      POSTGRES_USER: focusflow
+      POSTGRES_PASSWORD: focusflow
+    volumes:
+      - pg_data:/var/lib/postgresql/data
+      - ./migrations:/docker-entrypoint-initdb.d
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U focusflow -d focusflow"]
+      interval: 10s
+      timeout: 5s
+      retries: 5
+    restart: unless-stopped
+
+  redis:
+    image: redis:7-alpine
+    ports:
+      - "6380:6379"
+    volumes:
+      - redis_data:/data
+    command: redis-server --appendonly yes
+    healthcheck:
+      test: ["CMD", "redis-cli", "ping"]
+      interval: 10s
+      timeout: 5s
+      retries: 5
+    restart: unless-stopped
+
+volumes:
+  pg_data:
+  redis_data: