v1.0.1

fix(proxy): strengthen upstream retry with exponential backoff

• Retry up to 3 times (was 1) for 429/500/503 responses
• Exponential backoff: 2s → 4s → 8s (was fixed 1s)
• Respect retry-after header with 20s cap (was 5s)
• Add ±20% jitter to avoid thundering herd
• Log each retry attempt when CC_VR_DEBUG=1

v1.0.0

Initial release — image-routing proxy for Claude Code