Publish harness and TUI open-source

initial sync from the monorepo

crates/codegen/xai-grok-pager/src/slash/commands/btw.rs

@@ -0,0 +1,43 @@
+//! `/btw` -- ask a side question without interrupting the running agent.
+//!
+//! Returns `CommandResult::Action(Action::SendBtw(...))` so the dispatch layer
+//! fires it as an ACP ext method (`x.ai/btw`) that bypasses the prompt queue.
+
+use crate::app::actions::Action;
+use crate::slash::command::{CommandExecCtx, CommandResult, SlashCommand};
+
+pub struct BtwCommand;
+
+impl SlashCommand for BtwCommand {
+    fn name(&self) -> &str {
+        "btw"
+    }
+
+    fn description(&self) -> &str {
+        "Ask a side question without interrupting"
+    }
+
+    fn session_scoped(&self) -> bool {
+        true
+    }
+
+    fn usage(&self) -> &str {
+        "/btw <question>"
+    }
+
+    fn takes_args(&self) -> bool {
+        true
+    }
+
+    fn args_required(&self) -> bool {
+        true
+    }
+
+    fn arg_placeholder(&self) -> Option<&str> {
+        Some("<question>")
+    }
+
+    fn run(&self, _ctx: &mut CommandExecCtx, args: &str) -> CommandResult {
+        CommandResult::Action(Action::SendBtw(args.trim().to_string()))
+    }
+}