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/workspace/view/wasm_view.rs

@@ -20,7 +20,7 @@ use crate::view_components::action_button::{
 };
 use crate::wasm_nux_dialog::{WasmNUXDialog, WasmNUXDialogEvent};
 use crate::workspace::action::WorkspaceAction;
-use crate::workspace::view::{NotebookSource, OpenWarpDriveObjectSettings, Workspace};
+use crate::workspace::view::{NotebookSource, OpenGalaxyDriveObjectSettings, Workspace};
 use crate::BlocklistAIHistoryModel;
 
 const TRANSCRIPT_PANEL_WIDTH: f32 = 280.0;
@@ -101,7 +101,7 @@ impl Workspace {
             ConversationDetailsPanelEvent::OpenPlanNotebook { notebook_uid } => {
                 me.open_notebook(
                     &NotebookSource::Existing((*notebook_uid).into()),
-                    &OpenWarpDriveObjectSettings::default(),
+                    &OpenGalaxyDriveObjectSettings::default(),
                     ctx,
                     true,
                 );