ci(release): split validate-release into two workflows

push to dev triggers update-release-pr.yml (PR update only).
schedule and dispatch trigger validate-release.yml (build + test + record).

Author: vagabondHustler

.github/workflows/update-release-pr.yml

@@ -0,0 +1,51 @@
+name: Update release PR
+run-name: Update release PR
+
+
+on:
+  push:
+    branches:
+      - dev
+
+permissions:
+  contents: read
+  pull-requests: write
+
+concurrency:
+  group: update-release-pr
+  cancel-in-progress: true
+
+env:
+  JOBS: python .github/workflows/scripts/jobs.py
+  VALIDATION_REF: dev
+
+jobs:
+  prepare:
+    name: Open pull request to main
+    runs-on: ubuntu-latest
+    timeout-minutes: 10
+    steps:
+      - uses: actions/checkout@v7
+        with:
+          ref: ${{ env.VALIDATION_REF }}
+          fetch-depth: 0
+
+      - uses: actions/setup-python@v6
+        with:
+          python-version-file: .python-version
+
+      - name: Install commitizen
+        run: |
+          python -m pip install --upgrade pip commitizen
+          python -m pip install -e . --no-deps
+
+      - name: Render preview changelog
+        id: preview
+        run: ${{ env.JOBS }} prepare
+
+      - name: Open or update the release pull request
+        if: ${{ steps.preview.outputs.releasable == 'true' }}
+        run: ${{ env.JOBS }} open_main_pr
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          PREDICTED_VERSION: ${{ steps.preview.outputs.predicted_version }}

.github/workflows/validate-release.yml

@@ -3,9 +3,6 @@ run-name: Validate release
 
 
 on:
-  push:
-    branches:
-      - dev
   schedule:
     - cron: "0 3 * * *"
   workflow_dispatch:
@@ -30,44 +27,11 @@ concurrency:
 env:
   ARTIFACT_RETENTION_DAYS: 90
   JOBS: python .github/workflows/scripts/jobs.py
-  # Scheduled/manual runs start from the default branch; validation always targets the dev branch.
   VALIDATION_REF: dev
 
 jobs:
-  prepare:
-    name: Open pull request to main
-    runs-on: ubuntu-latest
-    timeout-minutes: 10
-    steps:
-      - uses: actions/checkout@v7
-        with:
-          ref: ${{ env.VALIDATION_REF }}
-          fetch-depth: 0
-
-      - uses: actions/setup-python@v6
-        with:
-          python-version-file: .python-version
-
-      - name: Install commitizen
-        run: |
-          python -m pip install --upgrade pip commitizen
-          python -m pip install -e . --no-deps
-
-      - name: Render preview changelog
-        id: preview
-        run: ${{ env.JOBS }} prepare
-
-      - name: Open or update the release pull request
-        if: ${{ steps.preview.outputs.releasable == 'true' }}
-        run: ${{ env.JOBS }} open_main_pr
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-          PREDICTED_VERSION: ${{ steps.preview.outputs.predicted_version }}
-
   gate:
     name: Decide whether to validate
-    needs: prepare
-    if: ${{ always() }}
     runs-on: ubuntu-latest
     timeout-minutes: 10
     outputs: