Initial MobilityOps build pack (docs, contracts, scaffold)

backend/app/main.py

@@ -0,0 +1,22 @@
+from fastapi import FastAPI
+
+from app.core.config import get_settings
+
+settings = get_settings()
+app = FastAPI(title="MobilityOps API", version="0.0.1")
+
+
+@app.get("/health")
+def health() -> dict[str, str]:
+    return {"status": "ok", "service": "mobilityops-api"}
+
+
+@app.get("/api/v1/system/status")
+def system_status() -> dict[str, object]:
+    return {
+        "service": "mobilityops-api",
+        "environment": settings.mobilityops_env,
+        "demo_mode": settings.mobilityops_demo_mode,
+        "knowledge_provider": settings.knowledge_provider,
+        "scaffold": True,
+    }