Port upstream UI polish and refresh dependencies

Bring over selected Warp UI improvements: selectable Thought text, message
timestamps, animated theme backgrounds, editable New Window shortcuts,
safer tab renaming and restoration, and text/font/discard crash fixes.

Match upstream orchestration pill geometry and tooltips, and replace expanded
subagent previews with compact links that retain live status and conversation
navigation for launches and follow-up messages.

Include the pending Cargo.lock dependency refresh.

Adapted upstream PRs: #15948, #15884, #15691, #14618, #15772, #15705,
#15605, #14895, #15996, #15771, #14893, and #14603.

app/src/ai/blocklist/history_model.rs

@@ -2167,6 +2167,26 @@ impl BlocklistAIHistoryModel {
         );
     }
 
+    /// Clears a closed surface without notifying a controller whose conversations moved elsewhere.
+    pub(crate) fn clear_conversations_for_closed_terminal_surface(
+        &mut self,
+        terminal_surface_id: EntityId,
+        ctx: &mut ModelContext<Self>,
+    ) {
+        if self
+            .live_conversation_ids_for_terminal_surface
+            .get(&terminal_surface_id)
+            .is_none_or(Vec::is_empty)
+        {
+            self.active_conversation_for_terminal_surface
+                .remove(&terminal_surface_id);
+            self.live_conversation_ids_for_terminal_surface
+                .remove(&terminal_surface_id);
+            return;
+        }
+        self.clear_conversations_for_terminal_surface(terminal_surface_id, ctx);
+    }
+
     /// Handle removing a conversation from the history model, blocklist and in-memory.
     pub fn remove_conversation(
         &mut self,