CI-validate-wrappers / validation (push) Has been cancelled
The dependency graph submission to GitHub's Dependency Submission API had no retry logic, causing intermittent HttpError failures that succeed on manual re-run. This adds: - Retry loop with exponential backoff (3 attempts: 1s, 2s, 4s delays) for transient errors (HTTP 429, 5xx) - Non-retryable errors (4xx except 429) fail immediately - HTTP status code included in error messages for better diagnostics - Unit tests for retry classification and error status helpers Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>