refactor(world): own live environment state

Move the DAT sky, selected day group, world clock, weather, AdminEnvirons bridge, and debug cycles into a one-shot WorldEnvironmentController while preserving GameWindow's public aliases and accepted startup/session/render order. Correct the named retail citations and register the remaining environment audio and fog/radar gaps.

Co-authored-by: Codex <codex@openai.com>

docs/plans/2026-07-22-gamewindow-slice-8-composition-lifecycle.md

@@ -20,7 +20,7 @@ audit.
   define host-quiescence failure semantics.
 - [x] C — extract live-session host/reset/binding callbacks and verify the
   embedded skill formula against named retail.
-- [ ] D — extract retail world-environment/day/weather behavior.
+- [x] D — extract retail world-environment/day/weather behavior.
 - [ ] E — extract two-phase raw pointer/camera input, focus, and framebuffer
   resize behind symmetric named subscriptions.
 - [ ] F — extract the sole gameplay input-action router plus focused combat and
@@ -471,6 +471,21 @@ checkpoint; the final connected lifecycle gate remains Checkpoint L.
 - Preserve existing named-retail citations and registered sound adaptation;
   diagnostics call typed commands rather than owning time/weather state.
 
+Result: `WorldEnvironmentController` is now the sole owner of the clock,
+loaded sky descriptor, selected day group, Weather state, server time sync,
+AdminEnvirons bridge, and time/weather debug cycles. `GameWindow` preserves its
+public readonly clock/weather aliases but only composes the owner into render
+and session seams. Initialization is explicitly one-shot, and missing GameTime
+restores the documented fallback origin instead of inheriting process-global
+state. Named-oracle review corrected the day picker to
+`SkyDesc::CalcPresentDayGroup @ 0x00500E10` and AdminEnvirons to
+`CPlayerSystem::Handle_Admin__Environs @ 0x0055DE20`; TS-54/TS-55 now register
+the carried centered-audio and complete fog/ambient/radar gaps. Three
+corrected-diff reviews are clean; 17 focused tests, the App suite (3,059 pass /
+3 intentional skips), the warning-free Release build, and the full suite
+(7,419 pass / 5 intentional skips) pass. No connected gate was required for
+this behavior-preserving ownership checkpoint.
+
 ### E — pointer, focus, and framebuffer resize
 
 - Make SilkKeyboard/Mouse sources and dispatcher links reversible, then attach