story-kit: merge 331_story_bot_start_command_to_start_a_coder_on_a_story

server/src/matrix/commands/mod.rs

@@ -120,6 +120,11 @@ pub fn commands() -> &'static [BotCommand] {
             description: "Show implementation summary for a merged story: `overview <number>`",
             handler: overview::handle_overview,
         },
+        BotCommand {
+            name: "start",
+            description: "Start a coder on a story: `start <number>` or `start <number> opus`",
+            handler: handle_start_fallback,
+        },
         BotCommand {
             name: "delete",
             description: "Remove a work item from the pipeline: `delete <number>`",
@@ -221,6 +226,16 @@ fn handle_htop_fallback(_ctx: &CommandContext) -> Option<String> {
     None
 }
 
+/// Fallback handler for the `start` command when it is not intercepted by
+/// the async handler in `on_room_message`.  In practice this is never called —
+/// start is detected and handled before `try_handle_command` is invoked.
+/// The entry exists in the registry only so `help` lists it.
+///
+/// Returns `None` to prevent the LLM from receiving "start" as a prompt.
+fn handle_start_fallback(_ctx: &CommandContext) -> Option<String> {
+    None
+}
+
 /// Fallback handler for the `delete` command when it is not intercepted by
 /// the async handler in `on_room_message`.  In practice this is never called —
 /// delete is detected and handled before `try_handle_command` is invoked.