Add reusable native Mod Settings navigation groundwork

[Guffawaffle]

Adds native Mod Settings pages and collapsible sections, keeping setting identity and persistence with each feature adapter. Empty groups are omitted; reused native views reject stale callbacks and reentrant writes. This is the navigation prerequisite for the controls in #282 and does not register new mod settings itself.

Depends on refreshed #277 and #280. Following #313, default-enabled [patches].nativesettingshooks controls the native adapter and [patches].runtimeconfighooks independently controls persistence. The patch registry owns both; native settings and hotkeys no longer install persistence themselves. Shared invocation and lookup helpers are already in dev through #292.

Validation: Windows release build; existing settings catalog, callback, view, choice, slider and persistence fixtures; all 11 example TOMLs. Current Windows static fit covers the installed confirmation/quit/update targets. Exact candidate native navigation smoke and supported macOS native extent/execution evidence remain outstanding; fixture success does not establish native UI behavior.

[Guffawaffle]

Hook/feature alignment follow-up for #313

Follow-up to #313: keep hook installation independent of feature enablement, with default-enabled compatibility switches under [patches] and feature checks inside the installed hooks.

This branch inherits the hardcoded native-settings installer from #277. Bring forward that parent's real default-enabled [patches] switch and the refreshed persistence parent from #280. Navigation/page availability must not force unrelated feature hooks on. This is the convergence point for #277 and #280; update both owning parents before carrying the result into #282 and its sibling branches.

Settings cascade (verified from current branch ancestry): #279 → #280; #277 + #280 → #281 → #282; sibling branches from #282 are #285, #293 and #297. #285 additionally depends on #269; #297 additionally depends on #296. Correct the owning parent first, then carry the fix through every dependent branch while preserving each sibling's scope.

Implemented in 7f9ea43fd69c2299a0d751d9e8c169015196ca4d. Both corrected parents are merged. Native settings retain default-enabled [patches].nativesettingshooks and persistence has its independent registry owner through runtimeconfighooks. The native installer no longer installs persistence directly. Obsolete platform/debug/capacity documentation is corrected. Windows validation passed for unchanged source before the documentation-only correction; CI is queued. Native game/Mac qualification remains open. Next: #282 and its sibling branches.