chore: ci detect 'always' label

Author: zaucy

.github/workflows/main.yml

@@ -5,6 +5,7 @@ name: main
 
 on:
   pull_request:
+    types: [ labeled, opened, synchronize, reopened ]
   merge_group:
 
 jobs:
@@ -25,7 +26,7 @@ jobs:
         with: { clang-format-version: "18" }
 
   test-windows:
-    if: github.event_name == 'merge_group'
+    if: github.event_name == 'merge_group' || contains(github.event.pull_request.labels.*.name, 'ci:always')
     runs-on: windows-latest
     steps:
       - uses: actions/cache@v4
@@ -41,7 +42,7 @@ jobs:
         working-directory: test
 
   test-linux:
-    if: github.event_name == 'merge_group'
+    if: github.event_name == 'merge_group' || contains(github.event.pull_request.labels.*.name, 'ci:always')
     runs-on: ubuntu-latest
     steps:
       - uses: actions/cache@v4