ci: replace fixed 120s sleep with preview URL polling in PR workflows

[Copilot]

The console and screenshots PR preview workflows used a hard sleep 120s to wait for the GitHub Pages preview to become available — too short sometimes, wasteful always. This replaces it with a curl polling loop that exits as soon as the preview responds 2xx (up to 180s timeout).

Changes

Both .github/workflows/console.yml and .github/workflows/screenshots.yml:

• Added job-level PREVIEW_URL env var — single source of truth for the preview URL, reused in all downstream steps
• Replaced Sleep for 120 seconds step with a bash polling loop: checks every 5s, succeeds on any 2xx, exits 1 after 180s timeout
• Removed PR_NUMBER step-level env in screenshots.yml — now uses ${{ env.PREVIEW_URL }} directly

env:
  PREVIEW_URL: https://primajin.github.io/Gyros/pr-preview/pr-${{ github.event.number }}/

- name: Wait for preview URL to be available
  if: steps.wait-for-build.outputs.conclusion == 'success'
  shell: bash
  run: |
    timeout=180; elapsed=0
    until [ "$elapsed" -ge "$timeout" ]; do
      status=$(curl --silent --output /dev/null --write-out "%{http_code}" "${PREVIEW_URL}" || true)
      if [[ "$status" =~ ^2 ]]; then echo "Preview is live (HTTP ${status})"; exit 0; fi
      echo "HTTP ${status} – retrying in 5 s (${elapsed}/${timeout}s elapsed)"
      sleep 5; elapsed=$((elapsed + 5))
    done
    echo "Timed out waiting for preview after ${timeout}s"; exit 1

[github-actions]

PR Preview Action v1.8.1
🚀 View preview at https://Primajin.github.io/Gyros/pr-preview/pr-43/
Built to branch gh-pages at 2026-07-11 09:09 UTC. Preview will be ready when the GitHub Pages deployment is complete.

[github-actions]

2026-07-11T09:10:09.300Z-iPad_Pro_landscape-7865b88.png

• https://github.com/Primajin/Gyros/releases/download/temp/2026-07-11T09.10.09.300Z-iPad_Pro_landscape-7865b88.png

2026-07-11T09:10:09.300Z-iPad_Pro-7865b88.png

• https://github.com/Primajin/Gyros/releases/download/temp/2026-07-11T09.10.09.300Z-iPad_Pro-7865b88.png

2026-07-11T09:10:09.300Z-iPhone_13-7865b88.png

• https://github.com/Primajin/Gyros/releases/download/temp/2026-07-11T09.10.09.300Z-iPhone_13-7865b88.png

[github-actions]

Console Logs

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[Copilot]

Pull request overview

This PR improves the reliability and efficiency of PR preview-dependent workflows by replacing a fixed 120s wait with a polling mechanism that proceeds as soon as the GitHub Pages preview becomes available.

Changes:

• Add a job-level PREVIEW_URL env var as a single source of truth for the PR preview URL.
• Replace the fixed sleep 120s step with a curl-based polling loop (up to 180s) that succeeds on HTTP 2xx.
• Update downstream steps to consume ${{ env.PREVIEW_URL }} (removing the step-level PR_NUMBER env in screenshots.yml).

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
.github/workflows/screenshots.yml	Adds PREVIEW_URL and replaces fixed sleep with polling before running screenshot capture against the preview.
.github/workflows/console.yml	Adds PREVIEW_URL, replaces fixed sleep with polling, and reuses the env var for the console log action URL.

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