The task asked for a `RewardEvents` table plus a backfill. That would have contradicted the published
promise that no viewer, member or donor information is retained after the session ends, and it would
have meant owning a ledger that YouTube already keeps.
So the report is DERIVED on demand instead:
- `Services/SuperChatEventService.cs` — `superChatEvents.list`, parsed for both event types (a sticker
must not be dropped), authorised by the existing `auth/youtube` scope, so no re-consent.
- `Models/SessionRewardSummary.cs` — rolls events up for the session window with **per-currency totals
that are never summed together** (a $5 and a €5 are not $10). Nothing is written down.
- The YPP drawer gains a **THIS SESSION** section: counts are neutral and always shown when there were
events; money appears only when the creator asks for it. `Show monetary metrics` is a drawer toggle,
persisted, **off by default** — a creator who never monetized is never shown a $0.00.
Also: money is labelled as estimates (removed/refunded events are excluded and totals can be restated
for weeks, not days).
Tests: `SessionRewardReportTests` — both reward types parse, the window makes it a session rather than
a channel report, currencies stay separate, an empty session shows nothing, a sticker-only session
still counts. `BackOnAirTests` moves into the serialised `MainViewModelLayoutPath` collection: it builds
a MainViewModel directly and was flaking against parallel tests that swap the static layout path.
FAST gate: 557 passed, 0 failed, 0 warnings.
gramps
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