Prevent Android chats from freezing or going blank (#1989)

* fix(app): stabilize streamed chat rendering

Use deterministic Markdown AST keys and preserve unique row identities when an assistant message resumes after a tool. Keep native gesture and plan-card children correctly keyed to avoid unsupported Fabric reconciliation paths.

* fix(app): stabilize retained native panels

Keep retained workspace roots in a stable native order and make active
panels present in the selection commit. Hidden panels now stop expensive
subscriptions and animations without losing mounted state.

* fix(app): harden retained panel activity

packages/app/src/components/sidebar/sidebar-workspace-row-content.tsx

@@ -142,7 +142,7 @@ export const SidebarWorkspaceRowContent = memo(function SidebarWorkspaceRowConte
               </Text>
               {scriptIconKind ? <WorkspaceScriptIcon kind={scriptIconKind} /> : null}
             </View>
-            <View style={styles.workspaceRowRight}>{children}</View>
+            <View style={sidebarWorkspaceRowStyles.rowRight}>{children}</View>
           </View>
           {subtitle ? (
             <Text style={styles.workspaceSubtitle} numberOfLines={1}>
@@ -502,7 +502,6 @@ const styles = StyleSheet.create((theme) => ({
     flex: 1,
     minWidth: 0,
   },
-  workspaceRowRight: sidebarWorkspaceRowStyles.rowRight,
   shortcutBadgeOverlay: {
     position: "absolute",
     top: 1,