fix(FN-2462): enforce frozen-lockfile bootstrap across workflows

- Update CI, version, and test-release workflows to use pnpm install --frozen-lockfile consistently.
- Align contributor and settings documentation plus worktree init examples toward deterministic frozen-lockfile bootstrap.
- Clarify TaskExecutor worktree init guidance to distinguish dependency bootstrap failures from missing workspace dist export failures.
- Refresh workflow, executor, restart, and SettingsModal tests (including stable Node Sync tab selection) to assert the new bootstrap contract.

packages/core/src/types.ts

@@ -1160,7 +1160,7 @@ export interface ProjectSettings {
    *  Only used when pushAfterMerge is true. Default: "origin". */
   pushRemote?: string;
   /** Shell command to run inside each new worktree immediately after creation.
-   *  Useful for project-specific setup (e.g. `pnpm install`, `cp .env.local .env`). */
+   *  Useful for project-specific setup (e.g. `pnpm install --frozen-lockfile`, `cp .env.local .env`). */
   worktreeInitCommand?: string;
   /** Custom test command for the project (e.g. "pnpm test") */
   testCommand?: string;