ci: exclude private workflow and spec dirs from sync

Add rsync exclusions for workflow/ and 编写规范/ directories
to prevent internal documents from being synced to LocoWiki.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: Michael-Jetson

.github/workflows/sync-to-locowiki.yml

@@ -83,6 +83,8 @@ jobs:
             rsync -av --delete \
               --exclude='_archive/***' \
               --exclude='*/_archive/***' \
+              --exclude='workflow/***' \
+              --exclude='编写规范/***' \
               --exclude='*.bak' \
               --exclude='*复制版本*' \
               --include='*/' \