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/pane_group/pane/notebook_pane.rs

@@ -7,7 +7,7 @@ use galaxyui::{AppContext, ModelHandle, SingletonEntity, ViewContext, ViewHandle
 use crate::{
     app_state::{LeafContents, NotebookPaneSnapshot},
     cloud_object::Space,
-    drive::{items::WarpDriveItemId, CloudObjectTypeAndId, OpenWarpDriveObjectSettings},
+    drive::{items::WarpDriveItemId, CloudObjectTypeAndId, OpenGalaxyDriveObjectSettings},
     notebooks::{
         link::{LinkEvent, NotebookLinks},
         manager::{NotebookManager, NotebookSource},
@@ -47,7 +47,7 @@ impl NotebookPane {
     /// Restore a notebook pane given its cloud notebook ID.
     pub fn restore(
         notebook_id: Option<SyncId>,
-        settings: &OpenWarpDriveObjectSettings,
+        settings: &OpenGalaxyDriveObjectSettings,
         ctx: &mut ViewContext<PaneGroup>,
     ) -> anyhow::Result<Self> {
         let window_id = ctx.window_id();
@@ -81,7 +81,7 @@ impl PaneContent for NotebookPane {
         let notebook_id = self.notebook_view(app).as_ref(app).notebook_id(app);
         LeafContents::Notebook(NotebookPaneSnapshot::CloudNotebook {
             notebook_id,
-            settings: OpenWarpDriveObjectSettings::default(),
+            settings: OpenGalaxyDriveObjectSettings::default(),
         })
     }
 
@@ -183,9 +183,9 @@ pub(super) fn subscribe_to_link_model(
                 session: session.clone(),
             })
         }
-        LinkEvent::OpenWarpDriveLink {
+        LinkEvent::OpenGalaxyDriveLink {
             open_warp_drive_args,
-        } => ctx.emit(crate::pane_group::Event::OpenWarpDriveLink {
+        } => ctx.emit(crate::pane_group::Event::OpenGalaxyDriveLink {
             open_warp_drive_args: open_warp_drive_args.clone(),
         }),
         LinkEvent::StartLocalSession { path } => {