add request_debug command

signal-gateway/src/claude/mod.rs

@@ -166,6 +166,11 @@ impl ClaudeAgent {
         let _ = self.input_tx.try_send(Input::Compact);
     }
 
+    /// Request the worker to log its message buffer for debugging.
+    pub fn request_debug(&self) {
+        let _ = self.input_tx.try_send(Input::Debug);
+    }
+
     /// Request the worker to interrupt any prompts it is responding to, discard any queued messages,
     /// and get ready to accept different prompts.
     ///

signal-gateway/src/claude/worker.rs

@@ -44,6 +44,7 @@ impl SentBy {
 pub enum Input {
     Chat(ChatMessage),
     Compact,
+    Debug,
 }
 
 /// A chat message
@@ -141,6 +142,9 @@ impl ClaudeWorker {
                         Input::Compact => {
                             self.handle_compact().await;
                         }
+                        Input::Debug => {
+                            self.handle_debug();
+                        }
                     }
                 }
                 _ = self.stop_rx.recv() => {
@@ -165,7 +169,7 @@ impl ClaudeWorker {
                         let _ = sender.send(Err(ClaudeError::StopRequested));
                     }
                 }
-                Input::Compact => {}
+                Input::Compact | Input::Debug => {}
             }
         }
     }
@@ -185,6 +189,11 @@ impl ClaudeWorker {
         self.messages.clear();
     }
 
+    /// Log the message buffer for debugging.
+    fn handle_debug(&self) {
+        info!("Claude message buffer:\n{:#?}", self.messages);
+    }
+
     /// Handle a single request to the Claude API.
     async fn handle_request(&mut self) -> Result<AdminMessageResponse, ClaudeError> {
         let max_iterations = self.config.claude_max_iterations;

signal-gateway/src/gateway/mod.rs

@@ -161,6 +161,9 @@ enum GatewayCommand {
     /// Compact Claude's message history
     #[conf(name = "claude-compact", alias = "CLAUDE-COMPACT")]
     ClaudeCompact,
+    /// Log Claude's message buffer for debugging
+    #[conf(name = "claude-debug", alias = "CLAUDE-DEBUG")]
+    ClaudeDebug,
 }
 
 /// Parse a gateway command from a string (with or without leading /)
@@ -793,6 +796,15 @@ impl Gateway {
                 claude.request_compaction();
                 Ok(AdminMessageResponse::new("compaction requested"))
             }
+            GatewayCommand::ClaudeDebug => {
+                let claude = self
+                    .claude
+                    .get()
+                    .ok_or_else(|| (501u16, "claude was not configured".into()))?;
+
+                claude.request_debug();
+                Ok(AdminMessageResponse::new("debug logged"))
+            }
         }
     }