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
2026-07-11 15:39:14 +08:00
parent 860fcb2e35
commit 28a27b02d3
40 changed files with 1244 additions and 543 deletions
@@ -0,0 +1,54 @@
+import { useMemo, useRef } from "react";
+import { useStoreWithEqualityFn } from "zustand/traditional";
+import { useCreateFlowStore } from "@/stores/create-flow-store";
+import { useSessionStore } from "@/stores/session-store";
+import {
+  areSidebarWorkspaceSessionsEqual,
+  buildSidebarWorkspaceEntries,
+  selectSidebarWorkspaceSessions,
+  type SidebarWorkspaceEntry,
+  type SidebarWorkspacePlacement,
+  type SidebarWorkspaceSession,
+} from "./sidebar-workspaces-view-model";
+
+const EMPTY_ENTRIES = new Map<string, SidebarWorkspaceEntry>();
+const EMPTY_SESSIONS: SidebarWorkspaceSession[] = [];
+const EMPTY_PENDING_CREATE_ATTEMPTS: Record<string, never> = {};
+
+export function useSidebarWorkspaceEntries(
+  placements: readonly SidebarWorkspacePlacement[],
+  enabled = true,
+): ReadonlyMap<string, SidebarWorkspaceEntry> {
+  const serverIds = useMemo(
+    () => Array.from(new Set(placements.map((placement) => placement.serverId))),
+    [placements],
+  );
+  const sessions = useStoreWithEqualityFn(
+    useSessionStore,
+    (state) =>
+      enabled ? selectSidebarWorkspaceSessions(state.sessions, serverIds) : EMPTY_SESSIONS,
+    areSidebarWorkspaceSessionsEqual,
+  );
+  const pendingCreateAttempts = useCreateFlowStore((state) =>
+    enabled ? state.pendingByDraftId : EMPTY_PENDING_CREATE_ATTEMPTS,
+  );
+  const previousEntriesRef = useRef<ReadonlyMap<string, SidebarWorkspaceEntry>>(EMPTY_ENTRIES);
+
+  // Collection ownership is intentional: retained sidebars have one cheap
+  // subscription to structurally shared indexes, never one session-store
+  // subscription per mounted row.
+  return useMemo(() => {
+    if (!enabled || placements.length === 0 || sessions.length === 0) {
+      previousEntriesRef.current = EMPTY_ENTRIES;
+      return EMPTY_ENTRIES;
+    }
+    const entries = buildSidebarWorkspaceEntries({
+      placements,
+      sessions,
+      pendingCreateAttempts,
+      previousEntries: previousEntriesRef.current,
+    });
+    previousEntriesRef.current = entries;
+    return entries;
+  }, [enabled, pendingCreateAttempts, placements, sessions]);
+}