feat(truapi-server): payload-blind wire-debug tap, sinks, and the codegen decode surface - #295
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Adds the producer side of the wire debugger: a
DebugSinktrait in the Rust host core (truapi-server) with taps at the two frame choke points, a loopback WebSocket sink for native hosts, and the codegen surface a debugger decodes against — the wire table plusTRUAPI_WIRE_SCHEMA_HASHover every frame id and its method leg.The tap is payload-blind:
DebugEvent::Framecarries the rawVec<u8>and the inbound tap runs before decode, so a corrupt frame is still observed. Outbound delivers to the product first, then taps. With no sink installed it is one relaxed atomic load. Every emit is wrapped incatch_unwind, and the mutexes on the frame and dispatch paths recover from poisoning, because a sink may be out-of-repo.Nothing consumes the frames yet. The WASM host installs a sink when the JS side passes a
debugEmitcallback; no caller in this stack passes one until the web host dial-out, so the tap is present but unsupplied.docs/design/wire-observability-debug-host.md(docs(design): wire observability and debug host #315)