ci(all-green): lengthen initial delay, tighten polling interval

Give sibling workflows more time to start before the first poll (1 -> 2.5
minutes) and poll more often thereafter (1 minute -> 30 seconds), bumping
retries (20 -> 30) to keep the same overall timeout budget.

Generated by Claude Code.

Author: rochdev

.github/workflows/all-green.yml

@@ -34,12 +34,12 @@ jobs:
       - run: yarn add @actions/core @actions/github octokit
       - run: node scripts/all-green.mjs
         env:
-          DELAY: ${{ github.run_attempt == 1 && '1' || '0' }} # 1 minute on first attempt, no delay on reruns
+          DELAY: ${{ github.run_attempt == 1 && '2.5' || '0' }} # 2.5 minutes on first attempt, no delay on reruns
           RUN_ATTEMPT: ${{ github.run_attempt }}
           GITHUB_PR_NUMBER: ${{ github.event.pull_request.number }}
           GITHUB_TOKEN: ${{ steps.octo-sts.outputs.token }}
-          POLLING_INTERVAL: 1
-          RETRIES: 20
+          POLLING_INTERVAL: 0.5
+          RETRIES: 30
       # Merge every downloaded per-cell `coverage-*` artifact's lcov report into a single
       # `coverage-upload/lcov/lcov.info`, uploaded to both Codecov and Datadog.
       - if: "!cancelled()"