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>

warzone/Cargo.toml

@@ -9,7 +9,7 @@ members = [
 ]
 
 [workspace.package]
-version = "0.0.34"
+version = "0.0.35"
 edition = "2021"
 license = "MIT"
 rust-version = "1.75"