feat(cli): add update-cache command, purge reinstall fallback, and batch failure tracking (#2693)

Add `cm-cli update-cache` command that force-fetches all remote data
and populates local cache in blocking mode. Bypasses pip/offline guards
in get_data_by_mode and get_cnr_data by directly fetching channel JSON
files and calling reload('remote'). Solves permanent cold-start issue
where pip-installed cm-cli could never populate CNR cache without
running the web server first.

Add UnifiedManager.purge_node_state() to both glob and legacy packages
for reinstall categorization mismatch (e.g. unknown→nightly). Includes
path traversal protection via commonpath, root directory guard,
comfyui-manager self-protection, and finally-guarded dictionary cleanup.

Add NodeInstallError exception and batch failure tracking to
for_each_nodes: reinstall propagates install failures via
raise_on_fail, for_each_nodes catches NodeInstallError, tracks
failed nodes, reports aggregate summary, and exits non-zero.

Remove debug print in install_node.
Bump version to 4.1b5.

E2E verified:
- update-cache: empty cache (5 lines) → populated (7815 lines)
- reinstall batch: 2 packs, 1 failure → continues to 2nd → summary + exit 1

pyproject.toml

@@ -5,7 +5,7 @@ build-backend = "setuptools.build_meta"
 [project]
 name = "comfyui-manager"
 license = { text = "GPL-3.0-only" }
-version = "4.1b4"
+version = "4.1b5"
 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"