feat: scale village queries and enrich Jajce center

docs/BUILD_IN_PUBLIC_PLAN.md

@@ -412,6 +412,13 @@ coverage validates the texture contract, presentation nodes, terrain shape,
 stable resources, and navigation. Clip capture and a visual performance review
 remain presentation checkpoints rather than missing implementation.
 
+`Jajce Center 02` adds the first reviewed composition pass beyond that baseline:
+the summit citadel and residential roof amphitheater read as one center, the
+waterfall feeds a Terrain3D-sampled turquoise ribbon, and bounded camera-local
+grass, conifers, richer deciduous silhouettes, and oversized butterflies add
+life without changing simulation authority. The matched review lives in
+[`baselines/JAJCE_CENTER_02.md`](baselines/JAJCE_CENTER_02.md).
+
 ### Exit condition
 
 The lookdev scene can produce a compelling 10–20 second clip with no gameplay.
@@ -755,14 +762,25 @@ Completed:
     NPC and event counts. The first reviewed capture sets a local 600-NPC target,
     records identical checksums across samples, and exposes repeated scarce-food
     population scans plus objective-event growth as the next measured work.
+33. Shared population query view: stable-ID all/living/starving indexes are
+    built once per deterministic tick and refreshed through interleaved NPC
+    updates. Baseline 02 preserves every checksum and improves the 600-NPC case
+    by 23.3% without simulation LOD.
+34. `Jajce Center 02`: the reviewed matched capture strengthens the citadel,
+    cascading homes, bridge, waterfall, terrain-following river, conifer/tree
+    clusters, and ambient butterflies. Roughly 10,400 camera-local grass
+    particles remain short and patchy and bend from real actor transforms.
 
 Next:
 
-1. Reuse one stable per-tick population view in the existing
-   trusted-starving-subject query, preserve exact action/checksum behavior, and
-   rerun simulation scaling baseline 01. Let the resulting profile determine
-   whether the following slice needs another bounded query optimization, a
-   spatial index, or the first active/abstract LOD contract.
+1. Measure and implement a loaded-resource spatial query through
+   `ActiveWorldAdapter` for far-apart Terrain3D-authored finite sources. Keep
+   simulation-owned resource records, stable IDs, current score/reachability,
+   reservations, player parity, and unload/rebind behavior unchanged.
+2. Sculpt a real Terrain3D river channel and waterfall shelf before adding a
+   broad foliage asset pass. Use Terrain3D particles for nearby grass and
+   intentional instancing for tree/fern/rock masses; add livestock only with a
+   real identity and interaction contract.
 
 Do not start with GIS data, a full city, a large asset pack, or more NPC
 mechanics. The next proof is a beautiful stage for the systems that already