fix: Windows git clone failures — URL reinstall + pipe deadlock + file lock

Three fixes for Windows E2E failures:

1. cm_cli reinstall_node(): URL-based node specs used the full URL
   as lookup key, but internal dicts are keyed by repo basename or
   cnr_id. Use get_cnr_by_repo() for CNR-aware lookup with correct
   is_unknown flag.

2. git_helper.py gitclone(): disable tqdm progress when stderr is
   piped (sys.stderr.isatty() gate) to prevent pipe buffer deadlock.
   Also move stale directories from previous failed clones into
   .disabled/.trash/ before cloning (GitPython handle leak on Windows).

3. try_rmtree(): 3-tier deletion strategy for Windows file locks:
   retry 3x with delay, rename into .disabled/.trash/, then lazy-delete
   via reserve_script as final fallback.

comfyui_manager/common/git_helper.py

@@ -100,8 +100,24 @@ def gitclone(custom_nodes_path, url, target_hash=None, repo_path=None):
     if repo_path is None:
         repo_path = os.path.join(custom_nodes_path, repo_name)
 
-    # Clone the repository from the remote URL
-    repo = git.Repo.clone_from(url, repo_path, recursive=True, progress=GitProgress())
+    # On Windows, previous failed clones may leave directories with locked
+    # .git/objects/pack/* files (GitPython memory-mapped handle leak).
+    # Rename stale directory out of the way so clone can proceed.
+    if os.path.exists(repo_path):
+        import shutil
+        import uuid as _uuid
+        trash_dir = os.path.join(custom_nodes_path, '.disabled', '.trash')
+        os.makedirs(trash_dir, exist_ok=True)
+        trash = os.path.join(trash_dir, repo_name + f'_{_uuid.uuid4().hex[:8]}')
+        try:
+            os.rename(repo_path, trash)
+            shutil.rmtree(trash, ignore_errors=True)
+        except OSError:
+            shutil.rmtree(repo_path, ignore_errors=True)
+
+    # Disable tqdm progress when stderr is piped to avoid deadlock on Windows.
+    progress = GitProgress() if sys.stderr.isatty() else None
+    repo = git.Repo.clone_from(url, repo_path, recursive=True, progress=progress)
 
     if target_hash is not None:
         print(f"CHECKOUT: {repo_name} [{target_hash}]")