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>

crates/onboarding/src/slides/theme_picker_slide.rs

@@ -6,7 +6,7 @@ use crate::visuals::theme_picker_visual;
 use crate::OnboardingIntention;
 use galaxy_core::features::FeatureFlag;
 use galaxy_core::send_telemetry_from_ctx;
-use galaxy_core::ui::{appearance::Appearance, theme::color::internal_colors, theme::WarpTheme};
+use galaxy_core::ui::{appearance::Appearance, theme::color::internal_colors, theme::GalaxyTheme};
 use galaxyui::{
     elements::{
         Border, ClippedScrollStateHandle, ConstrainedBox, Container, CornerRadius,
@@ -54,7 +54,7 @@ const TOS_URL: &str = "https://www.warp.dev/terms-of-service";
 
 #[derive(Debug, Clone)]
 struct ThemeOption {
-    theme: WarpTheme,
+    theme: GalaxyTheme,
     mouse_state: MouseStateHandle,
 }
 
@@ -73,7 +73,7 @@ pub struct ThemePickerSlide {
 
 impl ThemePickerSlide {
     pub(crate) fn new(
-        themes: [WarpTheme; 4],
+        themes: [GalaxyTheme; 4],
         onboarding_state: ModelHandle<OnboardingStateModel>,
         ctx: &mut ViewContext<Self>,
     ) -> Self {
@@ -222,7 +222,7 @@ impl ThemePickerSlide {
     fn render_theme_options(
         &self,
         appearance: &Appearance,
-        chrome_theme: &WarpTheme,
+        chrome_theme: &GalaxyTheme,
     ) -> Box<dyn Element> {
         let options = (0..self.theme_options.len())
             .map(|index| {
@@ -316,10 +316,10 @@ impl ThemePickerSlide {
     fn render_theme_option(
         &self,
         appearance: &Appearance,
-        chrome_theme: &WarpTheme,
+        chrome_theme: &GalaxyTheme,
         index: usize,
         theme_name: String,
-        option_theme: &WarpTheme,
+        option_theme: &GalaxyTheme,
         mouse_state: MouseStateHandle,
         interactive: bool,
     ) -> Box<dyn Element> {