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/tree.rs

@@ -20,7 +20,7 @@ use std::{fmt, iter, mem};
 
 use super::{ActivationReason, PaneGroup, PaneId};
 use crate::pane_group::{get_minimum_pane_size, DraggedBorder, PaneGroupAction};
-use crate::themes::theme::WarpTheme;
+use crate::themes::theme::GalaxyTheme;
 use galaxy_core::features::FeatureFlag;
 
 #[cfg(test)]
@@ -492,7 +492,7 @@ impl PaneData {
         self.len == 0
     }
 
-    pub fn render(&self, theme: &WarpTheme, app: &AppContext) -> Box<dyn Element> {
+    pub fn render(&self, theme: &GalaxyTheme, app: &AppContext) -> Box<dyn Element> {
         match &self.root {
             PaneNode::Leaf(pane) => pane.render(app),
             PaneNode::Branch(node) => node.render(theme, &self.hidden_panes, app),
@@ -694,7 +694,7 @@ impl PaneNode {
 
     fn render(
         &self,
-        theme: &WarpTheme,
+        theme: &GalaxyTheme,
         hidden_panes: &Vec<HiddenPane>,
         app: &AppContext,
     ) -> Box<dyn Element> {
@@ -1023,7 +1023,7 @@ impl PaneBranch {
 
     fn render(
         &self,
-        theme: &WarpTheme,
+        theme: &GalaxyTheme,
         hidden_panes: &Vec<HiddenPane>,
         app: &AppContext,
     ) -> Box<dyn Element> {
@@ -1355,7 +1355,7 @@ fn create_divider_placeholder(direction: SplitDirection, position_id: &str) -> B
 fn create_divider(
     direction: SplitDirection,
     item: &Divider,
-    theme: &WarpTheme,
+    theme: &GalaxyTheme,
 ) -> Box<dyn Element> {
     let divider = ConstrainedBox::new(
         Rect::new()
@@ -1393,7 +1393,7 @@ fn create_divider(
 fn create_minimalist_divider(
     direction: SplitDirection,
     item: &Divider,
-    theme: &WarpTheme,
+    theme: &GalaxyTheme,
 ) -> Box<dyn Element> {
     let divider = ConstrainedBox::new(
         Rect::new()