fix: Windows git clone failures — URL reinstall + pipe deadlock + file lock (#2726)

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.

pyproject.toml

@@ -5,7 +5,7 @@ build-backend = "setuptools.build_meta"
 [project]
 name = "comfyui-manager"
 license = { text = "GPL-3.0-only" }
-version = "4.1b7"
+version = "4.1b8"
 requires-python = ">= 3.9"
 description = "ComfyUI-Manager provides features to install and manage custom nodes for ComfyUI, as well as various functionalities to assist with ComfyUI."
 readme = "README.md"