feat(api): /VERSION single source read at startup + GET /version

api/app/main.py

@@ -17,8 +17,9 @@ from .canon_log import validate_canon_log
 from .narrate import run as narrate_run
 from .npc import UnknownNpc, run as npc_run
 from .ollama_client import ModelError
+from .version import VERSION
 
-app = FastAPI(title="coc-rpg proxy", version="0.0.1")
+app = FastAPI(title="coc-rpg proxy", version=VERSION)
 
 
 @app.exception_handler(RequestValidationError)
@@ -65,6 +66,11 @@ def health() -> dict:
     return {"status": "ok"}
 
 
+@app.get("/version")
+def version() -> dict:
+    return {"version": VERSION}
+
+
 # ── Role endpoints (charter §4) ──────────────────────────────────────────────
 # The client knows these paths and nothing about which model or prompt serves
 # them. Bodies are validated against the canon log contract. /dm/narrate is