feat: project skeleton

- infra (k8s, kind, helm, docker) backbone is implemented
- security: implementation + unit tests are done

app/main.py

@@ -0,0 +1,33 @@
+"""FastAPI application entry point."""
+
+from contextlib import asynccontextmanager
+from typing import AsyncGenerator
+
+from fastapi import FastAPI
+
+from app.api.v1 import health
+from app.config import settings
+from app.db import db, redis_client
+
+
+@asynccontextmanager
+async def lifespan(app: FastAPI) -> AsyncGenerator[None, None]:
+    """Manage application lifecycle - connect/disconnect resources."""
+    # Startup
+    await db.connect(settings.database_url)
+    await redis_client.connect(settings.redis_url)
+    yield
+    # Shutdown
+    await redis_client.disconnect()
+    await db.disconnect()
+
+
+app = FastAPI(
+    title="IncidentOps",
+    description="Incident management API with multi-tenant org support",
+    version="0.1.0",
+    lifespan=lifespan,
+)
+
+# Include routers
+app.include_router(health.router, prefix=settings.api_v1_prefix, tags=["health"])