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/settings_view/appearance_page.rs

@@ -45,8 +45,8 @@ use crate::terminal::settings::{
 };
 use crate::terminal::{BlockListSettings, ShowBlockDividers};
 use crate::terminal::{ShowJumpToBottomOfBlockButton, SizeInfo};
-use crate::themes::theme::{self, RespectSystemTheme, SelectedSystemThemes, ThemeKind, WarpTheme};
-use crate::user_config::WarpConfig;
+use crate::themes::theme::{self, RespectSystemTheme, SelectedSystemThemes, ThemeKind, GalaxyTheme};
+use crate::user_config::GalaxyConfig;
 use crate::util::bindings;
 use crate::window_settings::{
     BackgroundBlurRadius, BackgroundBlurTexture, BackgroundOpacity, LeftPanelVisibilityAcrossTabs,
@@ -2734,7 +2734,7 @@ impl ThemeSelectWidget {
         is_selected: bool,
         app: &AppContext,
     ) -> Box<dyn Element> {
-        let theme: WarpTheme = WarpConfig::as_ref(app).theme_config().theme(&theme_kind);
+        let theme: GalaxyTheme = GalaxyConfig::as_ref(app).theme_config().theme(&theme_kind);
         let mode_ui_label = match theme_chooser_mode {
             ThemeChooserMode::SystemLight => "Light",
             ThemeChooserMode::SystemDark => "Dark",