ci(ci): ci 可手动触发，推送时没跑成的提交能补跑

.github/workflows/ci.yml

@@ -17,11 +17,15 @@ name: ci
 #
 # release.yml calls this workflow (workflow_call) before it builds anything, so a tag passes
 # exactly these gates and there is one list of them.
+#
+# workflow_dispatch reruns the suite on a commit whose push produced no run, such as one
+# pushed while Actions was unavailable.
 on:
   push:
     branches: [main]
   pull_request:
   workflow_call:
+  workflow_dispatch:
 
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   contents: read