Measured findings:
Authenticated Calendar House editor load measured around 600 ms locally.
SQL calls were generally around 50-65 ms after warm-up.
The main recent bloat was the Help UI wiring: the editor had 615 help icons and about 1.5 MB of HTML.
Optimisations made:
Reduced repeated hidden help icons in [Edit.cshtml (line 409)](C:/Source/PlotLine/PlotLine/Views/FloorPlans/Edit.cshtml:409), especially per-block editors and repeated transition edit modals.
Help icons now measure at 107, with HTML reduced to about 1.26 MB.
Optimised occupancy warning calculation in [CoreServices.cs (line 7883)](C:/Source/PlotLine/PlotLine/Services/CoreServices.cs:7883) by grouping occupancy rows once instead of repeatedly scanning them per scene.
Added new index migration [083_FloorPlanEditorOccupancyIndexes.sql](C:/Source/PlotLine/PlotLine/Sql/083_FloorPlanEditorOccupancyIndexes.sql) for Floor Plan scene/occupancy lookups. Applied locally.
Verified:
Structure/Occupancy mode still works.
Previous/Next scene changes the selected scene.
Tokens and transitions still render.
Help icons still resolve to articles.
dotnet build PlotLine.slnx passes with 0 warnings and 0 errors.
No Floor Plans behaviour, transition logic, occupancy data model, or feature architecture changes.
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