Web client:
- Paperclip file upload button in chat bar
- Chunked upload: 64KB chunks, SHA-256 integrity
- Progress display during send/receive
- Auto-download on complete (browser save dialog)
- Max 10MB per file
WASM:
- decrypt_wire_message now returns file_header and file_chunk
with type, id, filename, chunk data (hex encoded)
Receive flow:
- FileHeader: registers pending transfer
- FileChunk: stores chunk, shows progress
- All chunks received: assembles, triggers blob download
Send flow (web→web or web→CLI):
- File sent as JSON messages (not bincode, for simplicity)
- Receiver handles both JSON and bincode formats
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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