v0.0.35: WASM create_call_signal, selectable identity, web sections
FC-P3-T2: WASM create_call_signal() export
- Accepts signal_type string (offer/answer/hangup/etc), payload, target
- Returns bincode WireMessage::CallSignal bytes for WS send
FC-P3-T9: Selectable identity display in web
- ETH address shown in code-style block, click to copy
- addSys() gains rawHtml parameter for rich content
FC-P3-T5: Section navigation comments in web.rs
- 5 section markers: State, Crypto, Network, UI, Commands
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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