## Why
In the experiment funnel report, variants with a trial (control,
reduced) show `0` under Actv/Cncl/Rfnd while their signups are still
mid-trial — so the table looked empty even though many of those trials
have already been canceled by the user (Cashier keeps serving the trial
until it ends, then simply doesn't charge). That "already lost, just not
settled yet" cohort was invisible.
On prod right now: 28 subscriptions in `trialing`, of which **10 are
already scheduled to cancel** — a leading churn signal the report was
hiding.
## What
- `ExperimentFunnelCollector`: new per-variant `trialingCanceling`
counter = `stripe_status === 'trialing'` **and** `ends_at !== null`.
- Report table: two new columns — `Trl` (currently in trial, previously
collected but never printed) and `TrlX` (of those, already scheduled to
cancel and won't convert). Discord legend updated.
- Test covering the new counter.
`Trl`/`TrlX` are orthogonal leading indicators; the mature Net%/MRR/ARPU
metrics are unchanged.
## Testing
`php artisan test
tests/Feature/SendExperimentFunnelReportCommandTest.php` — 9 passed.
815ca6244c