Telemetry reports final-step data; no mid-flight turn events

Patch Changes

• a9a22e1: fix(harness): fix telemetry end events to report final-step text and reasoning for multi-step turns
• 9e4e816: fix(harness): avoid emitting onTurnFinished / onTurnFailed when turn is suspended mid-flight
• ea3063f: fix(harness): remove broken bridge channel.interrupt() layer and its usage