Extract 7 sibling PresentationSystemGroup systems (client-only, observe-only), faithfully relocating methods+fields so behavior is preserved by construction:
- HudSystem (2129->1588L): BoonModalHudSystem, RouteMapHudSystem, MetaShopHudSystem, ClassPrepPortalHudSystem — each owns its own runtime UIDocument (MenuUi.LoadPanelSettings + own sortingOrder + EnsureEventSystem), the proven EnemyMarkerSystem/OnboardingSystem pattern; no shared root, no new static bridge.
- CombatFeedbackSystem (1300->914L): RoomPortalBeaconSystem, EnemyHealthBarSystem, EnemyDangerTelegraphSystem — each owns its FX-root + mats (via FeedbackFx), self-queries enemies + self-detects its edge (health-bar LastHp; danger _prevWindup), prunes its caches each frame.
Verified: compiles clean (0 errors), 466/466 EditMode tests pass, Play world-creation clean (no ComponentSystemSorter cycle, no OnCreate exception, 0 console errors). NOTE: the final VISUAL smoke (panels appear at the right lifecycle; enemy health bars / danger telegraphs / portal beacon render; buttons live) needs a FOCUSED Play pass — the play-mode transition throttles while Unity is unfocused, so I could not drive live frames headlessly.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
kronic
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