From a0a86b054fd3304f8c4b8aed409ee31fb2c67746 Mon Sep 17 00:00:00 2001
From: XukeWei-cc <301152382+XukeWei-cc@users.noreply.github.com>
Date: Thu, 9 Jul 2026 19:52:56 +0800
Subject: [PATCH] Add main PR source branch guard

---
 .../workflows/validate-pr-source-branch.yml   | 33 +++++++++++++++++++
 1 file changed, 33 insertions(+)
 create mode 100644 .github/workflows/validate-pr-source-branch.yml

diff --git a/.github/workflows/validate-pr-source-branch.yml b/.github/workflows/validate-pr-source-branch.yml
new file mode 100644
index 0000000..fb868a1
--- /dev/null
+++ b/.github/workflows/validate-pr-source-branch.yml
@@ -0,0 +1,33 @@
+name: Validate PR Source Branch
+
+on:
+  pull_request:
+    branches:
+      - main
+    types:
+      - opened
+      - reopened
+      - synchronize
+      - edited
+      - ready_for_review
+
+permissions:
+  contents: read
+
+jobs:
+  validate-source-branch:
+    name: Validate PR source branch
+    runs-on: ubuntu-latest
+    steps:
+      - name: Require feature or fix branch
+        shell: bash
+        env:
+          HEAD_REF: ${{ github.head_ref }}
+        run: |
+          if [[ "$HEAD_REF" =~ ^(feature|fix)-.+$ ]]; then
+            echo "Allowed source branch: $HEAD_REF"
+            exit 0
+          fi
+
+          echo "PRs targeting main must come from a branch named feature-* or fix-*. Current source branch: $HEAD_REF" >&2
+          exit 1