security: harden CI against supply-chain attacks (#20476)

- Pin all third-party actions to SHA
- Gate claude.yml triggers to internal authors with Harden-Runner egress
audit
- Ignore fork-PR lifecycle scripts
- Narrow cross-repo dispatch payloads
- Add 7d npm release-age gate
- Add CODEOWNERS on .github/** and .yarnrc.yml

---------

Co-authored-by: prastoin <paul@twenty.com>

.github/workflows/i18n-pull.yaml

@@ -35,7 +35,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4.3.1
         with:
           token: ${{ github.token }}
           ref: ${{ github.head_ref || github.ref_name }}
@@ -69,7 +69,7 @@ jobs:
 
       - name: Pull translations from Crowdin
         if: inputs.force_pull || steps.compile_translations_strict.outcome == 'failure'
-        uses: crowdin/github-action@v2
+        uses: crowdin/github-action@8868a33591d21088edfc398968173a3b98d51706 # v2
         with:
           upload_sources: false
           upload_translations: false
@@ -139,8 +139,7 @@ jobs:
 
       - name: Trigger i18n automerge
         if: steps.compile_translations.outputs.changes_detected == 'true'
-        uses: peter-evans/repository-dispatch@v2
-        with:
-          token: ${{ secrets.TWENTY_INFRA_TOKEN }}
-          repository: twentyhq/twenty-infra
-          event-type: i18n-pr-ready
+        env:
+          GH_TOKEN: ${{ secrets.TWENTY_INFRA_TOKEN }}
+        run: |
+          gh api repos/twentyhq/twenty-infra/dispatches -f event_type=i18n-pr-ready