Luan Vu 95885da14e feat(zalo): add file and image upload/send support (#62) ...

## Summary
- Implement UploadImage, SendImage, UploadFile, SendFile in Zalo Personal protocol
- Handle WebSocket control events (cmd=601) for async file upload callbacks
- Add media attachment routing in channel.Send() — auto-detects image vs file
- Add MEDIA: prefix support in message tool for agent file attachments
- Add group_id metadata routing for correct Zalo group API selection

## Review fixes (dc475bc)
- Fix CI: %s for json.Number (was %d)
- Fix path traversal: parseMediaPath restricted to os.TempDir()
- Add 25MB file size limit before upload reads
- Drain stale uploadCallbacks on Listener.reset()
- Split send.go (688 LOC) into send.go, send_image.go, send_file.go, send_helpers.go
- Add 12 unit tests for parseMediaPath

2026-03-06 23:20:50 +07:00

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zalo_e2e

feat(zalo): add file and image upload/send support (#62)

2026-03-06 23:20:50 +07:00