[kimi] refactor: extract presence state serializer from workshop heartbeat (#668) (#697)

src/dashboard/routes/world.py

@@ -25,6 +25,7 @@ from datetime import UTC, datetime
 from fastapi import APIRouter, WebSocket
 from fastapi.responses import JSONResponse
 
+from infrastructure.presence import serialize_presence
 from timmy.workshop_state import PRESENCE_FILE
 
 logger = logging.getLogger(__name__)
@@ -149,21 +150,7 @@ def _read_presence_file() -> dict | None:
 
 def _build_world_state(presence: dict) -> dict:
     """Transform presence dict into the world/state API response."""
-    return {
-        "timmyState": {
-            "mood": presence.get("mood", "calm"),
-            "activity": presence.get("current_focus", "idle"),
-            "energy": presence.get("energy", 0.5),
-            "confidence": presence.get("confidence", 0.7),
-        },
-        "familiar": presence.get("familiar"),
-        "activeThreads": presence.get("active_threads", []),
-        "recentEvents": presence.get("recent_events", []),
-        "concerns": presence.get("concerns", []),
-        "visitorPresent": False,
-        "updatedAt": presence.get("liveness", datetime.now(UTC).strftime("%Y-%m-%dT%H:%M:%SZ")),
-        "version": presence.get("version", 1),
-    }
+    return serialize_presence(presence)
 
 
 def _get_current_state() -> dict:

src/infrastructure/presence.py

@@ -0,0 +1,42 @@
+"""Presence state serializer — transforms ADR-023 presence dicts for consumers.
+
+Converts the raw presence schema (version, liveness, mood, energy, etc.)
+into the camelCase world-state payload consumed by the Workshop 3D renderer
+and WebSocket gateway.
+"""
+
+from datetime import UTC, datetime
+
+
+def serialize_presence(presence: dict) -> dict:
+    """Transform an ADR-023 presence dict into the world-state API shape.
+
+    Parameters
+    ----------
+    presence:
+        Raw presence dict as written by
+        :func:`~timmy.workshop_state.get_state_dict` or read from
+        ``~/.timmy/presence.json``.
+
+    Returns
+    -------
+    dict
+        CamelCase world-state payload with ``timmyState``, ``familiar``,
+        ``activeThreads``, ``recentEvents``, ``concerns``, ``visitorPresent``,
+        ``updatedAt``, and ``version`` keys.
+    """
+    return {
+        "timmyState": {
+            "mood": presence.get("mood", "calm"),
+            "activity": presence.get("current_focus", "idle"),
+            "energy": presence.get("energy", 0.5),
+            "confidence": presence.get("confidence", 0.7),
+        },
+        "familiar": presence.get("familiar"),
+        "activeThreads": presence.get("active_threads", []),
+        "recentEvents": presence.get("recent_events", []),
+        "concerns": presence.get("concerns", []),
+        "visitorPresent": False,
+        "updatedAt": presence.get("liveness", datetime.now(UTC).strftime("%Y-%m-%dT%H:%M:%SZ")),
+        "version": presence.get("version", 1),
+    }