Fix backend dependencies and document new API tags

backend/app/config.py

@@ -13,18 +13,20 @@ class Settings(BaseSettings):
     ENVIRONMENT: str = "development"
 
     # Database
-    DATABASE_URL: str
-    DATABASE_ASYNC_URL: str
+    # Provide sensible defaults so local development and tests can run
+    # without requiring environment configuration.
+    DATABASE_URL: str = "sqlite:///./test.db"
+    DATABASE_ASYNC_URL: str = "sqlite+aiosqlite:///./test.db"
 
     # Redis
     REDIS_URL: str = "redis://localhost:6379/0"
 
     # Security
-    SECRET_KEY: str
+    SECRET_KEY: str = "local-dev-secret-key"
     ALGORITHM: str = "HS256"
     ACCESS_TOKEN_EXPIRE_MINUTES: int = 30
     REFRESH_TOKEN_EXPIRE_DAYS: int = 7
-    WALLET_MASTER_KEY: str
+    WALLET_MASTER_KEY: str = "local-wallet-master-key-32chars-0000"
 
     # CORS
     ALLOWED_ORIGINS: str = "http://localhost:3000,http://localhost:8000"

backend/app/main.py

@@ -18,6 +18,18 @@ from app.routers import (
 from app.services.crypto import rotate_plaintext_wallet_keys
 
 
+openapi_tags = [
+    {"name": "railway", "description": "Railway deployment management"},
+    {"name": "vercel", "description": "Vercel project automation"},
+    {"name": "stripe", "description": "Stripe billing integrations"},
+    {"name": "twilio", "description": "Twilio messaging"},
+    {"name": "slack", "description": "Slack workspace automation"},
+    {"name": "discord", "description": "Discord community integrations"},
+    {"name": "sentry", "description": "Sentry monitoring hooks"},
+    {"name": "health", "description": "BlackRoad OS service health"},
+]
+
+
 @asynccontextmanager
 async def lifespan(app: FastAPI):
     """Application lifespan events"""
@@ -55,7 +67,8 @@ app = FastAPI(
     lifespan=lifespan,
     docs_url="/api/docs",
     redoc_url="/api/redoc",
-    openapi_url="/api/openapi.json"
+    openapi_url="/api/openapi.json",
+    openapi_tags=openapi_tags,
 )
 
 # CORS middleware