[robinv8]

The Sync Plugin Info workflow ran on pushes to both dev and main while always using the same chore/sync-info branch. A dev run force-pushed that branch onto dev, so the main sync PR (#330) suddenly showed the whole LDAP connector, and two bot PRs (#330, #331) shared one branch. Separately, sync-info.sh iterated i18n files in unsorted find order, so zh_CN/en_US could swap between runs and produce large reorder-only diffs.

Changes:

• Trigger only on pushes to dev (changes reach main via dev); set base: dev explicitly and delete-branch: true.
• Add a concurrency group so back-to-back pushes don't race on the branch.
• Sort i18n files with LC_ALL=C sort so key order is deterministic (en_US, then zh_CN, matching the current file).

Tested locally on dev: the regenerated plugins_desc.json only adds the new LDAP and vector-search entries (+65/−0), with no reordering, and two runs are byte-identical.