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/ai/agent_sdk/driver/error_classification.rs

@@ -1,3 +1,4 @@
+use crate::ai::agent::RenderableAIError;
 use crate::ai::blocklist::task_status_sync_model::classify_renderable_error;
 use crate::server::server_api::ai::TaskStatusUpdate;
 use galaxy_graphql::ai::{AgentTaskState, PlatformErrorCode};
@@ -66,7 +67,7 @@ pub fn classify_driver_error(error: &AgentDriverError) -> (AgentTaskState, TaskS
         AgentDriverError::WarpDriveSyncFailed => (
             AgentTaskState::Error,
             TaskStatusUpdate::with_error_code(
-                "Warp Drive failed to sync. Please check your network connection and try again.",
+                "Galaxy Drive failed to sync. Please check your network connection and try again.",
                 PlatformErrorCode::InternalError,
             ),
         ),
@@ -76,7 +77,7 @@ pub fn classify_driver_error(error: &AgentDriverError) -> (AgentTaskState, TaskS
                 AgentTaskState::Error,
                 TaskStatusUpdate::with_error_code(
                     format!(
-                        "Authentication required. Log in via '{bin} login', provide an API key via '--api-key', or set the WARP_API_KEY environment variable."
+                        "Authentication required. Log in via '{bin} login', provide an API key via '--api-key', or set the GALAXY_API_KEY environment variable."
                     ),
                     PlatformErrorCode::AuthenticationRequired,
                 ),
@@ -95,7 +96,7 @@ pub fn classify_driver_error(error: &AgentDriverError) -> (AgentTaskState, TaskS
             AgentTaskState::Failed,
             TaskStatusUpdate::with_error_code(
                 format!(
-                    "MCP server {uuid} was not found. Verify the server exists in your Warp Drive and the UUID is correct."
+                    "MCP server {uuid} was not found. Verify the server exists in your Galaxy Drive and the UUID is correct."
                 ),
                 PlatformErrorCode::EnvironmentSetupFailed,
             ),
@@ -125,7 +126,7 @@ pub fn classify_driver_error(error: &AgentDriverError) -> (AgentTaskState, TaskS
             AgentTaskState::Failed,
             TaskStatusUpdate::with_error_code(
                 format!(
-                    "Agent profile \"{name}\" not found. Check the profile ID and ensure it exists in your team's Warp Drive."
+                    "Agent profile \"{name}\" not found. Check the profile ID and ensure it exists in your team's Galaxy Drive."
                 ),
                 PlatformErrorCode::ResourceNotFound,
             ),
@@ -134,7 +135,7 @@ pub fn classify_driver_error(error: &AgentDriverError) -> (AgentTaskState, TaskS
             AgentTaskState::Failed,
             TaskStatusUpdate::with_error_code(
                 format!(
-                    "Saved prompt not found for ID {id}. Verify the prompt exists in your Warp Drive."
+                    "Saved prompt not found for ID {id}. Verify the prompt exists in your Galaxy Drive."
                 ),
                 PlatformErrorCode::ResourceNotFound,
             ),
@@ -302,6 +303,31 @@ pub fn classify_driver_error(error: &AgentDriverError) -> (AgentTaskState, TaskS
     }
 }
 
+/// Returns true if an `AgentDriverError` represents a transient condition that
+/// a subagent can recover from by retrying (e.g., network issues, rate limits,
+/// server overload). Permanent errors (auth, config, cancelled) return false.
+pub fn is_self_recoverable(error: &AgentDriverError) -> bool {
+    match error {
+        AgentDriverError::ConversationError { error: renderable } => {
+            matches!(
+                renderable,
+                RenderableAIError::ServerOverloaded
+                    | RenderableAIError::Other {
+                        will_attempt_resume: true,
+                        ..
+                    }
+            )
+        }
+        AgentDriverError::WarpDriveSyncFailed
+        | AgentDriverError::TeamMetadataRefreshTimeout
+        | AgentDriverError::ShareSessionFailed {
+            error: ShareSessionError::Timeout,
+            ..
+        } => true,
+        _ => false,
+    }
+}
+
 #[cfg(test)]
 #[path = "error_classification_tests.rs"]
 mod tests;