audit F18 [quality]: ICE candidate handle_ice_candidate result swallowed

[intendednull]

File: crates/web/src/event_processing.rs:128
Severity: quality
Obvious? yes

let _ = vm.borrow().handle_ice_candidate(&from, json); discards a Result from a critical voice-call signaling path. Module-doc on handlers.rs:10 explicitly calls out let _ = ... discards as an antipattern that needs typed handling.

Fix: at minimum log via tracing::warn! so failed ICE exchanges aren't silent.

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Filed by /general-audit @ 6404719 (2026-05-03). master: #567.