feat(FN-3583): prevent worktree collisions on manual moves and make heartbe

The merge lands five commits: a fix (FN-3583) that preserves non-tool message boundaries when tools are hidden in CLI bundles, plus hardened test coverage for that regression and bundle asset bootstrapping; worktree collision prevention on manual task moves via a new `worktree-names.ts` module and s

Fusion-Task-Id: FN-3583

packages/cli/src/__tests__/bundle-output-helpers.ts

@@ -46,6 +46,15 @@ export function buildCliWithRealDashboardAssets() {
 
   runBuildCommand("pnpm --filter @fusion/dashboard build:client", workspaceRoot);
   runBuildCommand("pnpm build", cliRoot);
+
+  if (hasBuiltDashboardAssets()) {
+    return;
+  }
+
+  // Fallback for environments where build:client alone does not refresh the
+  // dashboard dist/client bundle consumed by the CLI copy step.
+  runBuildCommand("pnpm --filter @fusion/dashboard build", workspaceRoot);
+  runBuildCommand("pnpm build", cliRoot);
 }
 
 export function readClientIndexHtml() {