One-off counters now show which old code paths are still being used, so they can be removed.
What's wrong with this entry?
Four one-shot telemetry probes now fire the first time a legacy path is hit, to work out what can be deleted. They cover the Co-Authored-By attribution setting, legacy local settings, the legacy progress bridge, an older token-adoption path and legacy plugin tip counts. No user-visible effect.
- Each probe is deduplicated per call site and can be reset; the token-adoption probe reports the site it fired from, and the plugin tip probe fires once per distinct outcome pair.
tengu_dead_probe_include_coauthored_by, tengu_dead_probe_adopt_ticks_token
Strings lifted out of the shipped bundle, so the claim above can be checked against them.