v0.2.2

What's changed

• Retry HTTP 502, 503, 504, 520, 522, 523, and 524 once for image generation and editing.
• Honor provider retry headers, with bounded exponential backoff and jitter as the fallback.
• Keep ambiguous transport failures, malformed responses, moderation blocks, usage limits, and other non-retryable errors single-attempt.
• Improve backend error classification and report the final HTTP status after a failed retry.

Full Changelog: v0.2.1...v0.2.2