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/integration/src/test/launch_configs.rs

@@ -50,7 +50,7 @@ pub fn test_add_launch_config_to_warp_config() -> Builder {
                         .clone();
                     launch_config_data_source.read(app, |palette, app| {
                         // Note that this can be a synchronous assertion because unlike the next test step,
-                        // we don't have concurrency with a WarpConfig watcher thread
+                        // we don't have concurrency with a GalaxyConfig watcher thread
                         assert_eq!(
                             palette.run_query(&Query::from(""), app).unwrap().len(),
                             0,

crates/integration/src/test/workflows.rs

@@ -104,7 +104,7 @@ pub fn test_loading_project_workflows() -> Builder {
 
                     workflows.read(app, |workflows, _| {
                         // Note that this can be a synchronous assertion because unlike the next assertion,
-                        // we don't have concurrency with a WarpConfig watcher thread
+                        // we don't have concurrency with a GalaxyConfig watcher thread
                         async_assert_eq!(
                             workflows.project_workflows().count(),
                             0,