[Roxas2712]

Gen2Recomped accepted core.logic_speed registrations without a native producer, so portable speed-control mods could load successfully while having no effect. Dispatch the same (next, game) contract as Gen1Recomp through native API 1/2, unified API 2 and API 3.

• Resolve live native options through next() or next(otherGame), then clamp the first hook result to the existing Gen2 speed ladder. Preserve the global saved speed and explicit launch overrides.
• Check link and stacked isFixedSpeed/isMinigame locks before overrides or callbacks. If a lock begins during an accelerated step, cancel the remaining frame budget without triggering hitch suppression.
• Advertise the real producer in capability/unified catalogs. Add a portable example, contract documentation and a pinned-reference CI workflow.

Stack / review scope

Depends on #144 and its existing prerequisites. This branch adds one feature commit on top of 34d5c10ff5cf5c8c65170a339a0ba9504972bf40; the main-target diff includes those unmerged prerequisites. Review only this change.

Validation

• 1,735 focused checks: shared API-3 contract (62), all 15 Gen2 host versions across four API/callback modes (1,266), and real Game:load callback / Game:update / FixedStep clock checks (407). Updated capability suite: 346/346.
• 64 native cross-engine runs, 904 paired observations, on both the feature branch and combined integration. The unchanged example runs on Red, Gold, FireRed and Emerald through native API 1/2, Gen2 unified API 2, and shared API 3.
• Clean pinned Gen1 reference: 79ea62f45fb2ea8f65d081a109431e4eb1bbdb36. Tests preserve native ladder differences (including Gen1's 3X rung), Gen1 GBA boot precedence, explicit next-target routing, invalid results, wrapper/native errors, cleanup and no-mod fallback.
• Clock tests cover 1–200X, mid-frame link/fixed-speed entry, unlock, and real-time audio/camera/presentation.

ROM-free quick suite	Engine	Mod SDK	B30 profile
Parent #144	83/93	3/3	pass
This feature	86/96	3/3	pass
Combined prior PRs + this feature	140/140	3/3	pass

The feature has the same ten failing suites and 17 failing assertions as its parent, with identical failure output; no new regression. Those separately proposed baseline fixes are included in the combined integration at d01a9ea2ba59146531cf007a39e9cee6a9c74d9f. The integration needed only a documentation placement resolution.

Reproduction commands and fixture boundaries are in the contract document. StyLua, actionlint and diff whitespace checks pass. Validation is ROM-free/headless; cartridge playthroughs, GPU rendering and live network sessions are outside these checks.

Hosted CI

GitHub currently reports action_required for all 6 pull-request workflows; jobs await maintainer approval for the fork contribution. These are not hosted passes. New logic-speed contract run. Local results above were completed on the published feature head and the combined integration.

Integration follow-up: the native clock fixture now also supplies the map-metadata and tileset-publication startup dependencies from #205/#208. Its real FixedStep/clock assertions remain in place; all 407 checks pass independently on this branch.