ci: fix Gitee mirror workflow triggers

.github/workflows/mirror_gitee.yml

@@ -1,22 +1,38 @@
 name: Mirror to Gitee Repo
 
+# Ref creation is also delivered as a push event, but deletion may only emit a
+# delete event. Keep both triggers so removed branches and tags are pruned from
+# the mirror without launching duplicate mirrors for ref creation.
 on:
   push:
-    branches-ignore:
-      - "copilot/**"
-      - "dependabot/**"
-      - "pre-commit-ci-update-config"
+    # Use positive patterns with exclusions so tag pushes can be listed below.
+    # `branches-ignore` by itself disables all tag-triggered runs.
+    branches:
+      - "**"
+      # GitHub creates these ephemeral refs while testing a merge queue entry.
+      # They are neither source branches nor refs that Gitee should receive.
+      - "!gh-readonly-queue/**"
+      - "!copilot/**"
+      - "!dependabot/**"
+      - "!pre-commit-ci-update-config"
+    tags:
+      - "**"
   delete:
-  create:
 
 # Ensures that only one mirror task will run at a time.
 concurrency:
   group: git-mirror
 
 jobs:
   git-mirror:
-    if: github.repository_owner == 'deepmodeling'
-    runs-on: ubuntu-slim
+    # Delete events use the default branch as `github.ref`, so inspect the
+    # payload ref to suppress only ephemeral merge-queue branch deletions.
+    if: >-
+      github.repository_owner == 'deepmodeling' &&
+      (github.event_name != 'delete' ||
+       !startsWith(github.event.ref, 'gh-readonly-queue/'))
+    # This is a Docker action; ubuntu-slim does not provide a Docker daemon.
+    runs-on: ubuntu-latest
     steps:
       - uses: wearerequired/git-mirror-action@v1
         env: