fix: regenerate Android autolinking in warmed worktrees

packages/stim-cli/src/__tests__/worktree-warm.test.ts

@@ -488,6 +488,27 @@ test('warm copies literal ignored filenames and skips excluded derived data', ()
   expect(existsSync(join(target, 'node_modules/pkg/.DerivedData'))).toBe(false);
 });
 
+test.each(['android/build/', 'apps/mobile/'])('warm excludes generated autolinking from ignored %s', (ignored) => {
+  write(root, '.gitignore', `${ignored}\n`);
+  const app = ignored.startsWith('apps/') ? 'apps/mobile/' : '';
+  const generated = `${app}android/build/generated`;
+  write(root, `${generated}/autolinking/autolinking.json`, 'source checkout paths');
+  write(root, `${generated}/autolinking/package.json.sha`, 'unchanged checksum');
+  write(root, `${generated}/other/output`, 'reusable output');
+  write(root, `${generated}/autolinking-extra/keep`, 'unrelated output');
+  const result = warm();
+  expect(result.failed).toEqual([]);
+  expect(existsSync(join(target, generated, 'autolinking'))).toBe(false);
+  expect(readFileSync(join(target, generated, 'other/output'), 'utf8')).toBe('reusable output');
+  expect(readFileSync(join(target, generated, 'autolinking-extra/keep'), 'utf8')).toBe('unrelated output');
+  expect(readFileSync(join(root, generated, 'autolinking/autolinking.json'), 'utf8')).toBe('source checkout paths');
+  write(target, `${generated}/autolinking/autolinking.json`, 'destination checkout paths');
+  expect(warm().failed).toEqual([]);
+  expect(readFileSync(join(target, generated, 'autolinking/autolinking.json'), 'utf8')).toBe(
+    'destination checkout paths',
+  );
+});
+
 test('exclusive directory publication preserves an empty directory created after the final precheck', () => {
   write(root, 'node_modules/pkg/index.js', 'source package');
   publication.beforeMkdir = (path) => {

packages/stim-cli/src/__tests__/worktree.test.ts

@@ -565,6 +565,8 @@ test('H1: cloneIgnoredEntries carries a top-level ignored $(...) filename as a l
 
 test('isCarrySkipped skips .DerivedData at any depth and treats .stim normally', () => {
   for (const rel of [
+    'android/build/generated/autolinking',
+    'apps/mobile/android/build/generated/autolinking/autolinking.json',
     '.DerivedData',
     'ios/build/.DerivedData',
     'node_modules/expo-modules-jsi/apple/.DerivedData',

packages/stim-cli/src/guide/lifecycle.ts

@@ -608,7 +608,9 @@ OPT-IN CONCURRENCY LIMITS (UNLIMITED BY DEFAULT)
   paths eligible under the main checkout's Git ignore rules, including .env
   and local configuration. The source's nonempty
   .worktreeexclude replaces its resolved worktree.exclude setting. Nested
-  registered worktrees and .DerivedData are excluded. Warm also skips paths
+  registered worktrees, .DerivedData, and android/build/generated/autolinking
+  caches are excluded, including in nested apps. Gradle regenerates autolinking
+  for the destination checkout on its next build. Warm also skips paths
   overlapping a nested destination worktree or below a symlink ancestor.
 
   Large copies stage privately outside Git working trees on the destination

packages/stim-cli/src/worktree.ts

@@ -20,9 +20,12 @@ import { makeTemporaryDirectory, removeTemporaryEntry } from './temporary.ts';
 const CARRY_SKIP_BASENAMES = new Set(['.DerivedData']);
 
 export function isCarrySkipped(rel: string): boolean {
-  return String(rel)
-    .split('/')
-    .some((seg) => CARRY_SKIP_BASENAMES.has(seg));
+  return (
+    /(^|\/)android\/build\/generated\/autolinking(\/|$)/.test(rel) ||
+    String(rel)
+      .split('/')
+      .some((seg) => CARRY_SKIP_BASENAMES.has(seg))
+  );
 }
 
 export function gitCommonDir(cwd: string): string | null {
@@ -226,7 +229,7 @@ function missingDestinationReason(target: string, rel: string): string | null {
   return lstatSync(join(target, rel), { throwIfNoEntry: false }) ? 'exists' : null;
 }
 
-function publishMissingEntry(from: string, to: string): boolean {
+function publishMissingEntry(from: string, to: string, rel: string): boolean {
   let cloned = true;
   const stat = lstatSync(from);
   if (stat.isSymbolicLink()) {
@@ -248,7 +251,8 @@ function publishMissingEntry(from: string, to: string): boolean {
   } else if (stat.isDirectory()) {
     mkdirSync(to, { mode: stat.mode | 0o700 });
     for (const name of readdirSync(from)) {
-      if (!CARRY_SKIP_BASENAMES.has(name) && !publishMissingEntry(join(from, name), join(to, name))) {
+      const child = `${rel}/${name}`;
+      if (!isCarrySkipped(child) && !publishMissingEntry(join(from, name), join(to, name), child)) {
         cloned = false;
       }
     }
@@ -305,7 +309,7 @@ export function cloneIgnoredEntries({
         continue;
       }
       mkdirSync(dirname(to), { recursive: true });
-      if (!publishMissingEntry(destination, to)) cloned = false;
+      if (!publishMissingEntry(destination, to, rel)) cloned = false;
       copied.push(rel);
     } catch (e) {
       failed.push({ file: rel, error: String((e as Error)?.message || e) });