fix: use moodType=STAR for wallmood, parse moodMap from response (v0.4.4)

FW_DEBUG=1 verification revealed:
- moodType "LIKE" was silently mapped to "STAR" server-side; use "STAR" directly
- Response a00.r.r contains full wall object with moodMap showing actual like state
- liked status now derived from moodMap rather than echoing the input bool
- SPEC.md updated with fully verified wallmood endpoint details

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

src/mcp_familywall/server.py

@@ -487,15 +487,16 @@ def like_post(post_id: str, like: bool = True) -> str:
     Returns:
         JSON success indicator or an error message.
     """
-    # wallmood is a toggle endpoint — same endpoint for like and unlike.
-    # The 'like' parameter controls the intended state; since the endpoint
-    # toggles server-side state, it is sent as 'moodType' to allow the server
-    # to differentiate.
-    # Verified: correct parameter name is 'wall_message_id' (API error message confirmed).
-    # 'moodType' values ("LIKE" / "NONE") still to be confirmed via FW_DEBUG=1.
+    # wallmood toggles the STAR mood on a wall post (same endpoint for like/unlike).
+    # Verified via FW_DEBUG=1:
+    #   - Parameter 'wall_message_id': post ID as returned by get_activities
+    #   - Parameter 'moodType': "STAR" (Family Wall's internal like type)
+    #   - Response a00.r.r: full wall message object with moodMap showing current state
+    # The endpoint is a toggle — calling it again removes the mood.
+    # 'like=False' relies on this toggle behaviour (call again to undo).
     params: dict[str, Any] = {
         "wall_message_id": post_id,
-        "moodType": "LIKE" if like else "NONE",
+        "moodType": "STAR",
     }
 
     try:
@@ -503,12 +504,13 @@ def like_post(post_id: str, like: bool = True) -> str:
     except RuntimeError as exc:
         return f"Error: {exc}"
 
-    # The response structure is not yet fully verified — return raw JSON
-    # if the expected shape is absent so the caller can inspect it.
+    # Extract moodMap from response to determine actual resulting state.
     try:
-        result_data = data["a00"]["r"]["r"]
-        if result_data is None:
-            raise KeyError("empty result")
+        wall_obj = data["a00"]["r"]["r"]
+        if not isinstance(wall_obj, dict):
+            raise TypeError("a00.r.r is not a dict")
+        mood_map: dict[str, Any] = wall_obj.get("moodMap") or {}
+        account_id: str = wall_obj.get("postAccountId", "")
     except (KeyError, TypeError):
         return json.dumps(
             {"warning": "Unexpected wallmood response structure", "raw": data},
@@ -516,8 +518,12 @@ def like_post(post_id: str, like: bool = True) -> str:
             indent=2,
         )
 
+    # Determine whether the post is now liked by checking if any entry in
+    # moodMap contains "STAR" (the server-side representation of a like).
+    now_liked = any("STAR" in moods for moods in mood_map.values())
+
     return json.dumps(
-        {"liked": like, "id": post_id},
+        {"liked": now_liked, "id": post_id, "author": account_id},
         ensure_ascii=False,
         indent=2,
     )