v1.4.0: Auto-compact streaming, Bedrock summarization support, subagent orchestration, and Galaxy rebrand continuation

Major features:
- Auto-compact: triggers conversation summarization when context window >= 85%,
  compacts Bedrock message history to a summary pair, and tracks live context tokens
- Bedrock summarization: plumbs `is_summarization` flag through translator/client/response
  pipeline, handles SummarizeConversation input type, and marks `summarized` in metadata
- Session restore: rebuilds bedrock_message_history from persisted task messages via
  newly-public `convert_proto_message`, preventing empty history on reconnect
- Subagent orchestration: adds SubagentQuestion/Answer/CompletionSummary event types,
  parent-child question routing with depth limits, retry counting, and drain methods
- Summarization UI: inline SummarizationView in AI blocks with progress/finished states

Refactors:
- Rename WarpTheme → GalaxyTheme across ~100 files (rebrand continuation)
- Rename warp_home_config_dir → galaxy_home_config_dir and related path functions
- Predefined rules: replace "System Defined Rule #N" with descriptive names
  (e.g. "Correctness Over Speed", "Never Guess") and add lookup helpers
- Usage view: replace cumulative input/output token display with live context tokens,
  cache hit rate calculation, and separate cache read/write stats
- Telemetry: remove verbose doc comments, simplify trait definitions
- Facts view: simplify delete permission check (always allow local deletion)
- Remove warp_managed_paths_watcher.rs (dead code)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

app/src/server/cloud_objects/update_manager.rs

@@ -4475,8 +4475,27 @@ impl UpdateManager {
         initiated_by: InitiatedBy,
         ctx: &mut ModelContext<Self>,
     ) {
-        // If the object isn't known to the server yet, we can't delete it.
+        // If the object isn't known to the server yet, delete it locally.
         let Some(server_id) = id.server_id() else {
+            let uid = id.uid();
+            let sync_ids_and_types = CloudModel::handle(ctx).update(ctx, |cloud_model, ctx| {
+                let (sync_ids_and_types, _) = cloud_model.delete_objects_by_id(vec![uid], ctx);
+                sync_ids_and_types
+            });
+            if !sync_ids_and_types.is_empty() {
+                self.save_to_db([ModelEvent::DeleteObjects {
+                    ids: sync_ids_and_types,
+                }]);
+            }
+            ctx.emit(UpdateManagerEvent::ObjectOperationComplete {
+                result: ObjectOperationResult {
+                    success_type: OperationSuccessType::Success,
+                    operation: ObjectOperation::Delete { initiated_by },
+                    client_id: None,
+                    server_id: None,
+                    num_objects: Some(1),
+                },
+            });
             return;
         };