fix: restore triage skill files and keep sync non-destructive

app/git.js

@@ -66,9 +66,9 @@ export async function commitAndPush(workspace, repoDir, _spawnSync = spawnSync)
       run(['config', 'user.name', 'AI Review Bot'], repoDir);
 
       const existingSyncPaths = [];
-      const missingSyncPaths = [];
 
-      // Mirror sync files from workspace into the repo copy.
+      // Copy action skill files into the target repo. Existing files are overwritten;
+      // missing source files are ignored so we do not delete target repo content.
       for (const relPath of SYNC_PATHS) {
         const src = path.join(workspace, relPath);
         const dest = path.join(repoDir, relPath);
@@ -76,21 +76,12 @@ export async function commitAndPush(workspace, repoDir, _spawnSync = spawnSync)
           fs.mkdirSync(path.dirname(dest), { recursive: true });
           fs.copyFileSync(src, dest);
           existingSyncPaths.push(relPath);
-          continue;
         }
-
-        if (fs.existsSync(dest)) {
-          fs.rmSync(dest, { force: true });
-        }
-        missingSyncPaths.push(relPath);
       }
 
       if (existingSyncPaths.length > 0) {
         run(['add', ...existingSyncPaths], repoDir);
       }
-      if (missingSyncPaths.length > 0) {
-        run(['rm', '--cached', '--ignore-unmatch', '--', ...missingSyncPaths], repoDir);
-      }
 
       const status = run(['status', '--porcelain'], repoDir);
       if (!status) {