huskies: merge 1140 story One-shot project-rebuild chat command: rebuild image, swap container, reconnect, preserve state

server/src/chat/commands/mod.rs

@@ -274,6 +274,11 @@ pub fn commands() -> &'static [BotCommand] {
             description: "Bootstrap a new project container (gateway only): `new project <name>`",
             handler: new_project::handle_new_project_fallback,
         },
+        BotCommand {
+            name: "project-rebuild",
+            description: "Rebuild a project's Docker image and swap the container (gateway only): `project-rebuild <name> [--timeout <secs>] [--force]`",
+            handler: handle_project_rebuild_fallback,
+        },
     ]
 }
 
@@ -431,6 +436,16 @@ fn handle_cleanup_worktrees_fallback(_ctx: &CommandContext) -> Option<String> {
     None
 }
 
+/// Fallback handler for the `project-rebuild` command when it is not intercepted
+/// by the async gateway handler in `on_room_message`.  In practice this is never
+/// called — `project-rebuild` is detected and handled before `try_handle_command`
+/// runs in gateway mode.  The entry exists in the registry so `help` lists it.
+///
+/// Returns `None` to prevent the LLM from receiving the raw command text.
+fn handle_project_rebuild_fallback(_ctx: &CommandContext) -> Option<String> {
+    None
+}
+
 // ---------------------------------------------------------------------------
 // Tests
 // ---------------------------------------------------------------------------