Delete your own board messages; drop chips name their item

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

app.py

@@ -330,6 +330,14 @@ class Handler(BaseHTTPRequestHandler):
                 return "There's no raid to stand guard for"
             player["garrison"] = bool(body.get("join"))
             return None
+        if path == "/api/board/delete":
+            message = next((m for m in world["board"] if m.get("id") == body.get("id")), None)
+            if not message:
+                return "That message is gone"
+            if message["who"] != player["id"]:
+                return "You can only delete your own messages"
+            world["board"].remove(message)
+            return None
         if path == "/api/aid":
             return game.aid_problem(world, player, str(body.get("kind")), str(body.get("item")), str(body.get("source")), now)
         if path == "/api/hire":
@@ -358,7 +366,8 @@ class Handler(BaseHTTPRequestHandler):
             text = str(body.get("text", "")).strip()[:500]
             if not text:
                 return "Say something"
-            world["board"].append({"at": now, "who": player["id"], "text": text})
+            world["next_message_id"] = world.get("next_message_id", 1) + 1
+            world["board"].append({"id": world["next_message_id"] - 1, "at": now, "who": player["id"], "text": text})
             del world["board"][:-game.MAX_LOG]
             return None
         return "Not found"