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/workspace/mod.rs

@@ -714,7 +714,7 @@ pub fn init(app: &mut AppContext) {
             WorkspaceAction::ToggleLeftPanel,
         )
         .with_context_predicate(id!("Workspace"))
-        .with_custom_action(CustomAction::ToggleWarpDrive),
+        .with_custom_action(CustomAction::ToggleGalaxyDrive),
         EditableBinding::new(
             TOGGLE_RIGHT_PANEL_BINDING_NAME,
             BindingDescription::new("Toggle code review")
@@ -764,7 +764,7 @@ pub fn init(app: &mut AppContext) {
         EditableBinding::new(
             LEFT_PANEL_WARP_DRIVE_BINDING_NAME,
             BindingDescription::new("Left Panel: Galaxy Drive"),
-            WorkspaceAction::ToggleWarpDrive,
+            WorkspaceAction::ToggleGalaxyDrive,
         )
         .with_group(bindings::BindingGroup::Navigation.as_str())
         .with_context_predicate(id!("Workspace") & id!(flags::ENABLE_WARP_DRIVE))
@@ -791,7 +791,7 @@ pub fn init(app: &mut AppContext) {
             TOGGLE_WARP_DRIVE_BINDING_NAME,
             BindingDescription::new("Toggle Galaxy Drive")
                 .with_custom_description(bindings::MAC_MENUS_CONTEXT, "Galaxy Drive"),
-            WorkspaceAction::ToggleWarpDrive,
+            WorkspaceAction::ToggleGalaxyDrive,
         )
         .with_context_predicate(id!("Workspace") & id!(flags::ENABLE_WARP_DRIVE)),
         EditableBinding::new(
@@ -1401,7 +1401,7 @@ fn add_open_setting_pages_as_editable_binding(app: &mut AppContext) {
         )
         .with_group(bindings::BindingGroup::Settings.as_str())
         .with_context_predicate(id!("Workspace"))
-        .with_custom_action(CustomAction::ShowAboutWarp),
+        .with_custom_action(CustomAction::ShowAboutGalaxy),
         EditableBinding::new(
             "workspace:show_settings_teams_page",
             BindingDescription::new("Open Settings: Teams")