feat: add FastAPI app factory and health check endpoint

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

app/routes/health.py

@@ -0,0 +1,23 @@
+"""Health check route for monitoring and readiness probes.
+
+Provides a simple GET /health endpoint that returns application
+status, name, and version.
+"""
+
+from fastapi import APIRouter
+
+router = APIRouter(tags=["health"])
+
+
+@router.get("/health")
+async def health_check() -> dict:
+    """Return application health status.
+
+    Returns:
+        JSON with app name, version, and status.
+    """
+    return {
+        "app": "sneakyswole",
+        "version": "0.1.0",
+        "status": "ok",
+    }