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

scripts/postinstall-patches.mjs

@@ -5,6 +5,10 @@ import { join } from "node:path";
 // In CI we often install a single workspace (e.g. server/relay/website). Only apply patches
 // when the patched dependency is actually present.
 const patchedPackages = [
+  {
+    nodeModulesPath: "node_modules/react-native-markdown-display",
+    patchPrefix: "react-native-markdown-display+",
+  },
   {
     nodeModulesPath: "node_modules/react-native-draggable-flatlist",
     patchPrefix: "react-native-draggable-flatlist+",