* fix(diag): record bridge events in diagnostics page
Connection lost/reconnecting/disconnected and iOS audio interruption
events now appear in the diagnostics dialog alongside existing error
snackbar entries.
* fix(diag): reduce audio callback sample verbosity to debug
The render callback diagnostic sample logged every 100 callbacks
(~2s) at INFO level, flooding the 256-entry release log buffer and
pushing out useful events. Changed to DEBUG so it only appears in
debug builds with the larger 4096-entry buffer.
* fix(diag): add timestamps to Rust diagnostic log entries