fix: skip missing sync paths in commit step

app/git.js

@@ -74,7 +74,10 @@ export async function commitAndPush(workspace, repoDir, _spawnSync = spawnSync)
         fs.copyFileSync(src, dest);
       }
 
-      run(['add', ...SYNC_PATHS], repoDir);
+      const existingSyncPaths = SYNC_PATHS.filter(relPath => fs.existsSync(path.join(repoDir, relPath)));
+      if (existingSyncPaths.length > 0) {
+        run(['add', ...existingSyncPaths], repoDir);
+      }
 
       const status = run(['status', '--porcelain'], repoDir);
       if (!status) {

app/git.test.js

@@ -101,6 +101,19 @@ describe('commitAndPush', () => {
     assert.ok(!addCall.args.includes('README.md'));
   });
 
+  it('does not add missing sync paths', async () => {
+    const missingPath = path.join(workspace, '.amazonq/rules/triage-findings.md');
+    fs.rmSync(missingPath, { force: true });
+    fs.rmSync(path.join(workspace, 'repo', '.amazonq/rules/triage-findings.md'), { force: true });
+    const spawn = makeSpawn();
+
+    await commitAndPush(workspace, path.join(workspace, 'repo'), spawn);
+
+    const addCall = spawn.calls.find(c => c.args[0] === 'add');
+    assert.ok(addCall, 'expected git add to run');
+    assert.ok(!addCall.args.includes('.amazonq/rules/triage-findings.md'));
+  });
+
   it('overwrites existing repo copies with workspace files', async () => {
     const repoDir = path.join(workspace, 'repo');
     fs.writeFileSync(path.join(repoDir, '.github/skills/triage-findings/SKILL.md'), 'stale');