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/import/iterm_parser.rs

@@ -2,7 +2,7 @@ use std::path::PathBuf;
 
 use async_trait::async_trait;
 use bitflags::bitflags;
-use galaxy_core::ui::theme::{AnsiColors, TerminalColors, WarpTheme};
+use galaxy_core::ui::theme::{AnsiColors, TerminalColors, GalaxyTheme};
 use galaxyui::{
     fonts::FontInfo, keymap::Keystroke, platform::mac::utils::unicode_char_to_key, DisplayIdx,
 };
@@ -126,7 +126,7 @@ impl ITermTheme {
         mut self,
         suffix: &'static str,
         default_theme: &ITermTheme,
-    ) -> Result<WarpTheme, ThemeError> {
+    ) -> Result<GalaxyTheme, ThemeError> {
         if self.foreground == default_theme.foreground
             || self.background == default_theme.background
         {
@@ -149,7 +149,7 @@ impl ITermTheme {
 
         let accent = calculate_accent_color(background, foreground, cursor, bright);
 
-        Ok(WarpTheme::new(
+        Ok(GalaxyTheme::new(
             background.into(),
             foreground,
             accent.into(),