docs: add current developer feature index

docs/BUILD_IN_PUBLIC_PLAN.md

@@ -1,5 +1,14 @@
 # The Steward — Build-in-Public Visual Slice Plan
 
+> **Current-status note (2026-08-13):** This document remains the scoped Jajce
+> visual-production plan. The simulation has since added authored content
+> packs, shared player/NPC activity commands, generated situations/dialogue,
+> regional records, and reversible High/Balanced/Low presentation profiles.
+> Use the [developer index](DEVELOPER_INDEX.md) and
+> [presentation guide](FEATURE_PRESENTATION_PERFORMANCE.md) for the current
+> implementation map. The visual plan's phase history is retained for capture
+> provenance and does not claim that regional gameplay is production-wired.
+
 ## Purpose
 
 This plan adapts the proposed “Jajce simulation garden” to the repository as it
@@ -630,7 +639,9 @@ The adjusted first milestone is complete when:
 - River, waterfall foam, mist, warm lighting, and first foliage are present.
 - A beauty camera produces a strong 10–20 second shot.
 - A rough navigation test proves the main route is viable.
-- The existing simulation has not yet been duplicated or moved.
+- The existing simulation remains in one `SimulationManager`; regional records
+  and the caravan proof are additive and have not replaced the local Jajce
+  facade.
 
 ## Definition of “Simulation Garden 01”