Reactor audit 2026-09-23 L30: shutdown report can claim success for never-started workers and hides over-budget AI workers

[faratech]

crates/wfdiag-app/src/workers.rs:526-569 pushes WorkerStopRecord::stopped (stopped_within_budget=true) for Monitor/Diagnostics/History/Provider/Update even when the handle was None (failed/unconfigured at boot); :588-596 discards chat/report stop_and_join(budget) results, so an AI worker missing AI_STOP_BUDGET is absent from ShutdownReport instead of reported over-budget.
Fix: record honest per-worker outcomes (not-started / stopped / over-budget).

[faratech]

Fixed in fb48229.

[faratech]

Fixed in 4077d85 (workers that never started are absent from the report; chat/report join outcome travels on ShutdownReport::ai_stopped_within_budget).