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/menu.rs

@@ -15,7 +15,7 @@ use galaxyui::elements::{
 };
 use galaxyui::WindowId;
 use galaxyui::{
-    accessibility::{AccessibilityContent, ActionAccessibilityContent, WarpA11yRole},
+    accessibility::{AccessibilityContent, ActionAccessibilityContent, GalaxyA11yRole},
     elements::{
         Align, Border, ConstrainedBox, Container, CornerRadius, CrossAxisAlignment, Dismiss,
         DispatchEventResult, Element, EventHandler, Flex, Hoverable, Icon, MainAxisAlignment,
@@ -2342,28 +2342,28 @@ impl<A: Action + Clone> SubMenu<A> {
                 Custom(AccessibilityContent::new(
                     menu_item,
                     instructions,
-                    WarpA11yRole::TextRole,
+                    GalaxyA11yRole::TextRole,
                 ))
             }
             OpenSubmenu => Custom(AccessibilityContent::new(
                 String::from("Submenu Expanded"),
                 "Press the right key to open the selected submenu",
-                WarpA11yRole::TextRole,
+                GalaxyA11yRole::TextRole,
             )),
             CloseSubmenu(_) => Custom(AccessibilityContent::new(
                 String::from("Submenu Closed"),
                 "Removing focus from a submenu will close the submenu",
-                WarpA11yRole::TextRole,
+                GalaxyA11yRole::TextRole,
             )),
             Close(_) => Custom(AccessibilityContent::new(
                 String::from("Menu Closed"),
                 "Press the escape key to close the menu",
-                WarpA11yRole::TextRole,
+                GalaxyA11yRole::TextRole,
             )),
             Enter => Custom(AccessibilityContent::new(
                 String::from("Action Selected"),
                 "Press the enter key to execute the selected menu item action",
-                WarpA11yRole::TextRole,
+                GalaxyA11yRole::TextRole,
             )),
             HoverSubmenuLeafNode { .. }
             | UnhoverSubmenuParent(_)