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/galaxy_web_event_bus/src/lib.rs

@@ -6,10 +6,10 @@ use wasm_bindgen::JsCast;
 
 /// Events emitted from Warp on Web to the host JavaScript app.
 ///
-/// These must stay in sync with the [`WarpEvent` TypeScript type](https://github.com/warpdotdev/warp-server/blob/develop/client/src/warp-client/index.ts).
+/// These must stay in sync with the [`GalaxyEvent` TypeScript type](https://github.com/warpdotdev/warp-server/blob/develop/client/src/warp-client/index.ts).
 #[derive(Debug, Clone, Serialize)]
 #[serde(tag = "kind", rename_all = "SCREAMING_SNAKE_CASE")]
-pub enum WarpEvent {
+pub enum GalaxyEvent {
     LoggedOut,
     SessionJoined,
     ErrorLogged { error: String },
@@ -42,7 +42,7 @@ mod ffi {
 }
 
 /// Emit an event to the host JavaScript app.
-pub fn emit_event(event: WarpEvent) {
+pub fn emit_event(event: GalaxyEvent) {
     let serialized =
         serde_wasm_bindgen::to_value(&event).expect("Event must convert to JavaScript");
     match ffi::emit_event(serialized) {