feat: add managed runtime daemon metadata

python/ktx-daemon/src/ktx_daemon/app.py

@@ -3,6 +3,7 @@
 from __future__ import annotations
 
 import logging
+import os
 from collections.abc import Callable
 from typing import Any
 
@@ -80,7 +81,11 @@ def create_app(
 
     @app.get("/health")
     async def health() -> dict[str, str]:
-        return {"status": "healthy"}
+        response = {"status": "healthy"}
+        version = os.environ.get("KTX_DAEMON_VERSION")
+        if version:
+            response["version"] = version
+        return response
 
     @app.post("/database/introspect", response_model=DatabaseIntrospectionResponse)
     async def database_introspect(

python/ktx-daemon/tests/test_app.py

@@ -69,6 +69,16 @@ def test_health_endpoint_returns_healthy() -> None:
     assert response.json() == {"status": "healthy"}
 
 
+def test_health_endpoint_returns_managed_runtime_version(monkeypatch) -> None:
+    monkeypatch.setenv("KTX_DAEMON_VERSION", "0.2.0")
+    client = TestClient(create_app())
+
+    response = client.get("/health")
+
+    assert response.status_code == 200
+    assert response.json() == {"status": "healthy", "version": "0.2.0"}
+
+
 def test_database_introspect_endpoint_returns_snapshot() -> None:
     calls = []