feat: enhance safety filters for shell commands by normalizing ANSI-C quoting

src/app/runtime/actions/mod.rs

@@ -514,7 +514,7 @@ pub fn apply_action(state: &mut AppStateRest, action: Action) {
                     .filter_map(|m| m.content.as_deref())
                     .map(|c| c.len())
                     .sum();
-                let token_estimate = total_chars / 4;
+                let token_estimate = total_chars / 3;
                 rt.messages = crate::app::runtime::shortsend::shape_messages(&rt.messages, token_estimate, max_wire_tokens, true, None);
                 state.push_toast(Toast::new(ToastKind::Success, "Conversation history compacted.".to_string()));
                 state.dirty = true;
@@ -706,7 +706,10 @@ fn spawn_turn(state: &AppStateRest) {
     let abort_flag = state.abort_flag.clone();
     abort_flag.store(false, std::sync::atomic::Ordering::SeqCst);
 
-    *in_flight_flag.lock().unwrap() = true;
+    *in_flight_flag.lock().unwrap_or_else(|e| {
+        tracing::error!("[spawn_turn] in_flight_flag mutex poisoned: {}", e);
+        e.into_inner()
+    }) = true;
 
     let events_q = turn_events.clone();