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/pane_group/mod_tests.rs

@@ -49,7 +49,7 @@ use crate::{
     },
     test_util::settings::initialize_settings_for_tests,
     undo_close::UndoCloseStack,
-    warp_managed_paths_watcher::WarpManagedPathsWatcher,
+    galaxy_managed_paths_watcher::GalaxyManagedPathsWatcher,
     workflows::local_workflows::LocalWorkflows,
     workspace::{
         sync_inputs::SyncedInputState, ActiveSession, OneTimeModalModel, WorkspaceRegistry,
@@ -102,7 +102,7 @@ fn initialize_app(app: &mut App) {
     app.add_singleton_model(|_| DetectedRepositories::default());
     app.add_singleton_model(HomeDirectoryWatcher::new_for_test);
     app.add_singleton_model(DirectoryWatcher::new);
-    app.add_singleton_model(WarpManagedPathsWatcher::new_for_testing);
+    app.add_singleton_model(GalaxyManagedPathsWatcher::new_for_testing);
     app.add_singleton_model(FileMCPWatcher::new);
     app.add_singleton_model(|_| FileBasedMCPManager::default());