ci: auto-approve and auto-merge trusted bot pull requests (#6531)

* ci: auto-approve and auto-merge trusted bot pull requests

Replace the approve-only automatic-approval workflow with a combined
approve + enable-auto-merge workflow that also re-runs on every push,
plus a scheduled reconcile job that re-enables auto-merge for prepared
bot PRs if GitHub ever disables it. Bot PRs are gated to the known bot
actors, same-repo head, and base branch dev.

* ci: match bot authors by app slug in reconcile filter

gh pr list reports pull request authors of GitHub Apps as app/<slug>;
adjust the allowlist so the reconcile job actually matches bot PRs.

.github/workflows/automatic-approval.yml

@@ -1,35 +0,0 @@
-name: "[Dependency Updates] Auto Approve"
-on:
-  pull_request:
-    types: [opened, synchronize]
-
-permissions: {}
-
-jobs:
-  approve-automatic-prs:
-    runs-on: ubuntu-latest
-    timeout-minutes: 2
-    # 158783068: homarr-renovate[bot]
-    # 190541745: homarr-crowdin[bot]
-    # 210161987: homarr-update-contributors[bot]
-    # 175486441: homarr-releases[bot]
-    # Extracted from https://api.github.com/users/<username>
-    if: github.actor_id == 158783068 || github.actor_id == 190541745 || github.actor_id == 210161987 || github.actor_id == 175486441
-    steps:
-      - name: Checkout code
-        uses: actions/checkout@v7
-      - name: Obtain token
-        id: obtainToken
-        uses: actions/create-github-app-token@v3
-        with:
-          private-key: ${{ secrets.RENOVATE_APPROVE_PRIVATE_KEY }}
-          client-id: ${{ secrets.RENOVATE_APPROVE_APP_ID }}
-          permission-pull-requests: write # required to approve pull request
-
-      - name: Install GitHub CLI
-        run: sudo apt-get install -y gh
-      - name: Approve automatic PRs
-        env:
-          GITHUB_TOKEN: ${{ steps.obtainToken.outputs.token }}
-        run: |
-          gh pr review ${{github.event.pull_request.number}} --approve --body "Automatically approved by GitHub Action"

.github/workflows/bot-auto-merge-reconcile.yml

@@ -0,0 +1,40 @@
+name: "[Bots] Reconcile Auto-merge"
+
+on:
+  schedule:
+    - cron: "*/30 * * * *"
+  workflow_dispatch:
+
+permissions: {}
+
+jobs:
+  reconcile:
+    runs-on: ubuntu-latest
+    timeout-minutes: 15
+    steps:
+      - name: Obtain token
+        id: obtainToken
+        uses: actions/create-github-app-token@v3
+        with:
+          private-key: ${{ secrets.RENOVATE_APPROVE_PRIVATE_KEY }}
+          client-id: ${{ secrets.RENOVATE_APPROVE_APP_ID }}
+          permission-pull-requests: write # required to enable auto-merge
+
+      - name: Install GitHub CLI
+        run: sudo apt-get install -y gh
+
+      - name: Re-enable auto-merge for prepared bot PRs
+        env:
+          GITHUB_TOKEN: ${{ steps.obtainToken.outputs.token }}
+        run: |
+          # 158783068: homarr-renovate[bot]
+          # 190541745: homarr-crowdin[bot]
+          # 210161987: homarr-update-contributors[bot]
+          # 175441: homarr-releases[bot]
+          gh pr list --repo "${{ github.repository }}" --base dev --state open --limit 100 \
+            --json number,author,reviewDecision,mergeStateStatus,autoMergeRequest \
+            --jq '.[] | select(.author.login as $login | ["app/homarr-renovate", "app/homarr-crowdin", "app/homarr-update-contributors", "app/homarr-releases"] | index($login)) | select(.reviewDecision == "APPROVED") | select(.mergeStateStatus == "CLEAN") | select(.autoMergeRequest == null) | .number' \
+          | while read -r pr; do
+              echo "Re-enabling auto-merge on PR #$pr"
+              gh pr merge "$pr" --auto --squash --delete-branch
+            done

.github/workflows/bot-pr-automerge.yml

@@ -0,0 +1,44 @@
+name: "[Bots] Approve and Auto-merge"
+
+on:
+  pull_request:
+    types: [opened, synchronize, reopened, ready_for_review]
+
+permissions: {}
+
+jobs:
+  approve-and-automerge:
+    runs-on: ubuntu-latest
+    timeout-minutes: 5
+    # 158783068: homarr-renovate[bot]
+    # 190541745: homarr-crowdin[bot]
+    # 210161987: homarr-update-contributors[bot]
+    # 175441: homarr-releases[bot]
+    # Extracted from https://api.github.com/users/<username>
+    if: |
+      (github.actor_id == 158783068 || github.actor_id == 190541745 || github.actor_id == 210161987 || github.actor_id == 175441) &&
+      github.event.pull_request.head.repo.full_name == github.repository &&
+      github.event.pull_request.base.ref == 'dev'
+    steps:
+      - name: Obtain token
+        id: obtainToken
+        uses: actions/create-github-app-token@v3
+        with:
+          private-key: ${{ secrets.RENOVATE_APPROVE_PRIVATE_KEY }}
+          client-id: ${{ secrets.RENOVATE_APPROVE_APP_ID }}
+          permission-pull-requests: write # required to approve a pull request and enable auto-merge
+
+      - name: Install GitHub CLI
+        run: sudo apt-get install -y gh
+
+      - name: Approve and enable auto-merge
+        env:
+          GITHUB_TOKEN: ${{ steps.obtainToken.outputs.token }}
+        run: |
+          PR_NUMBER="${{ github.event.pull_request.number }}"
+          if [ "$(gh pr view "$PR_NUMBER" --json reviewDecision --jq .reviewDecision)" != "APPROVED" ]; then
+            gh pr review "$PR_NUMBER" --approve --body "Automatically approved by Homarr bot policy"
+          fi
+          if [ "$(gh pr view "$PR_NUMBER" --json autoMergeRequest --jq '.autoMergeRequest != null')" != "true" ]; then
+            gh pr merge "$PR_NUMBER" --auto --squash
+          fi