fix: remove continue-on-error masking sync workflow failures (#224)

[rishab11250]

Description

Removes continue-on-error: true from the Run sync loop step in sync-leaderboard.yml which was silently swallowing all workflow failures. Replaces it with explicit failure tracking across all 72 iterations, annotated error output, auto-creation of GitHub issues after 3 consecutive failures, and a final summary that causes the workflow step to show red when failures occur.

Linked Issue

Fixes #224

Changes Made

• Added issues: write permission to allow gh issue create
• Removed continue-on-error: true from the Run sync loop step
• Added failure tracking counters (SUCCESS_COUNT, FAIL_COUNT, CONSECUTIVE_FAILS, ISSUE_CREATED)
• Wrapped node scripts/sync-leaderboard.js in if/else to track exit codes instead of silently continuing
• Prints ::error:: annotations per failure visible in the GitHub Actions UI
• Auto-creates a GitHub issue (with type:devops label, run link, and failure details) after 3 consecutive failures, limited to once per run
• Prints a final summary block showing total iterations, successful count, and failed count
• Exits with code 1 if any iteration failed so the step shows ❌ status
• Preserved || true on git pull --rebase as expected transient errors

Type of Change

• Bug fix
• New feature
• UI/Visual update
• Documentation update
• Refactor

Testing

• Tested locally
• Tested on mobile viewport (if applicable)
• No console errors introduced
• Verified with npx prettier --check .github/workflows/sync-leaderboard.yml

Checklist

• My code follows the project's coding style
• I have formatted my code locally by running npx prettier --write . before submitting
• I am submitting my PR from a dedicated feature/* branch, not the main branch
• I have performed a self-review of my code
• My changes generate no new warnings or errors
• I have updated documentation if required
• I have linked the relevant issue

Screenshots / Screen Recording

N/A — workflow-only change, no UI impact.

[github-actions]

Thank you for submitting a pull request.

Please ensure your changes comply with the project's contribution guidelines and that all workflow checks pass successfully.

Formatting and Branching

• Please confirm you have formatted your code locally using npx prettier --write ., or you can simply comment /format on this PR to have our bot do it for you!
• Ensure this PR is made from a feature/* branch and not main.

Note: This project is currently maintained by a solo maintainer, so reviews and responses may sometimes take a little time. Thanks for your patience.