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InProcessPairUp now consults ModePolicyRegistry per call and reads the fallback threshold from MatchingConfig via IServiceScopeFactory (singleton service consuming a scoped IGameConfigService). New behavior for PvpFirstThenAiFallback modes: when the calling viewer IS the slot's waiter and Now - WaitingSince >= threshold, the waiter unparks and the bridge resolves a Bot match. PvpOnly modes (TK2) keep parking forever (modulo a 5-minute stale-waiter eviction backstop). TimeProvider is injected so tests can drive time forward with FakeTimeProvider — 7 new tests cover the four key transitions (stay-parked / pair-pvp / fall-back / stale-evict) plus per-mode isolation. Fixture uses [FixtureLifeCycle(InstancePerTestCase)] because the assembly is Parallelizable(ParallelScope.All). Program.cs registers ModePolicyRegistry with three rows: TK2 PvpOnly, rotation/unlimited rank PvpFirstThenAiFallback. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>