chore: add workflow to sync skills from trigger.dev monorepo

.github/workflows/sync-from-monorepo.yml

@@ -0,0 +1,67 @@
+name: Sync skills from monorepo
+
+on:
+  schedule:
+    - cron: "0 6 * * 1"
+  workflow_dispatch:
+
+permissions:
+  contents: write
+  pull-requests: write
+
+jobs:
+  sync:
+    runs-on: ubuntu-latest
+    if: github.repository == 'triggerdotdev/skills'
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Fetch monorepo skills
+        run: |
+          git clone --depth 1 --filter=blob:none --no-checkout \
+            https://github.com/triggerdotdev/trigger.dev.git monorepo
+          git -C monorepo sparse-checkout set --no-cone packages/cli-v3/skills
+          git -C monorepo checkout
+          echo "MONOREPO_SHA=$(git -C monorepo rev-parse HEAD)" >> "$GITHUB_ENV"
+
+      - name: Apply sync map
+        run: |
+          set -euo pipefail
+          SRC=monorepo/packages/cli-v3/skills
+          jq -r 'to_entries[] | "\(.key)\t\(.value)"' sync-map.json |
+            while IFS=$'\t' read -r src dst; do
+              [ -d "$SRC/$src" ] || { echo "::warning::mapped skill '$src' not found in monorepo"; continue; }
+              rm -rf "./$dst"
+              cp -R "$SRC/$src" "./$dst"
+            done
+          comm -23 \
+            <(find "$SRC" -mindepth 1 -maxdepth 1 -type d -printf '%f\n' | sort) \
+            <(jq -r 'keys[]' sync-map.json | sort) \
+            | sed 's/^/::warning::unmapped monorepo skill: /'
+          rm -rf monorepo
+
+      - name: Open or update pull request
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          set -euo pipefail
+          if [ -z "$(git status --porcelain)" ]; then
+            echo "No changes to sync."
+            exit 0
+          fi
+          git config user.name "github-actions[bot]"
+          git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
+          git checkout -B sync/monorepo-skills
+          git add -A
+          git commit -m "chore: sync skills from triggerdotdev/trigger.dev@${MONOREPO_SHA:0:7}"
+          git push --force-with-lease origin sync/monorepo-skills
+          body="Automated weekly sync from [\`triggerdotdev/trigger.dev@${MONOREPO_SHA:0:7}\`](https://github.com/triggerdotdev/trigger.dev/commit/${MONOREPO_SHA}).
+
+          Mappings live in \`sync-map.json\`. To publish a new monorepo skill, add an entry there. See the workflow run for any unmapped skills."
+          existing=$(gh pr list --head sync/monorepo-skills --state open --json number --jq '.[0].number // empty')
+          if [ -n "$existing" ]; then
+            gh pr edit "$existing" --body "$body"
+          else
+            gh pr create --head sync/monorepo-skills --base main \
+              --title "chore: sync skills from monorepo" --body "$body"
+          fi

sync-map.json

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+{
+  "getting-started": "trigger-setup",
+  "authoring-tasks": "trigger-tasks",
+  "realtime-and-frontend": "trigger-realtime"
+}