feat: scale village queries and enrich Jajce center

docs/LEARNING_ROADMAP.md

@@ -469,8 +469,10 @@ important history.
 
 [Simulation scaling baseline 01](benchmarks/SIMULATION_SCALING_BASELINE_01.md)
 sets the first local target at 600 data-only full-fidelity NPCs while preserving
-deterministic state. Revisit that target when world presentation or LOD enters
-the measured workload.
+deterministic state. [Baseline 02](benchmarks/SIMULATION_SCALING_BASELINE_02.md)
+keeps identical final checksums after one reusable per-tick population view and
+improves that case from 65.84 to 85.81 ticks per second. Revisit the target when
+world presentation or LOD enters the measured workload.
 
 ## Milestone 9 — Player interaction and social agency
 
@@ -862,15 +864,35 @@ workload exclusions, checksums, and local 50-ticks-per-second reference target
 live in
 [Simulation scaling baseline 01](benchmarks/SIMULATION_SCALING_BASELINE_01.md).
 
-The immediate next slice should build one bounded per-tick population view for
-the existing trusted-starving-subject query. That scarce-food path currently
-rebuilds an all-NPC lookup for each applicable idle decision, making it the
-first code-level candidate consistent with the measured superlinear growth.
-Preserve exact selection/checksum behavior and rerun the same ledger before
-choosing a spatial index or active/abstract LOD design.
+The first measured optimization is also complete. `SimulationPopulationView`
+builds stable-ID all/living/starving indexes once per tick, refreshes them after
+each interleaved NPC update, and serves relationship/action queries without
+entering saved state. Every baseline-02 checksum exactly matches baseline 01.
+The 600-NPC case falls from 15,187.74 to 11,654.10 microseconds per tick, a
+23.3% improvement, while small fixtures expose the expected fixed dictionary
+cost. See
+[Simulation scaling baseline 02](benchmarks/SIMULATION_SCALING_BASELINE_02.md).
+
+The immediate next systems slice should now prove spatial discovery for the
+world vision: index loaded finite `ResourceNode` anchors through
+`ActiveWorldAdapter` so Terrain3D-authored sources can be placed much farther
+apart without an all-node scan for every resolution. Preserve stable IDs,
+current distance/risk/comfort/priority scoring, reachability, reservations,
+player parity, unload/rebind authority, and exact deterministic outcomes. First
+measure 18, 180, and 1,800 loaded candidates; do not choose a generic spatial
+framework or active/abstract LOD mode before that real consumer proves the
+contract.
 
 Recently completed:
 
+- Shared population query view: one transient per-tick all/living/starving
+  index replaces repeated scarce-food relationship scans, preserves exact
+  checksums, and improves the reviewed 600-NPC workload by 23.3%.
+- `Jajce Center 02`: matched before/after captures now document a larger summit
+  citadel, cascading timber-plaster homes, terrain-following turquoise river,
+  rock-framed waterfall, richer tree silhouettes, restrained conifer clusters,
+  oversized butterflies, and short camera-local grass that bends around real
+  player/NPC transforms without becoming simulation state.
 - Deterministic simulation scaling baseline: schema-valid full-fidelity
   fixtures, a repeatable CLI runner, and a fast headless regression now record
   population throughput, phase timing, serialized-state growth, history