feat: author discoverable forest edge

docs/baselines/JAJCE_FOREST_EDGE_06.md

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+# Jajce Forest Edge 06
+
+Captured: 2026-07-18
+
+## Files
+
+- [before forest edge](jajce_forest_edge_06_before.png)
+- [authored forest edge](jajce_forest_edge_06_after.png)
+- [finite trees depleted](jajce_forest_edge_06_depleted.png)
+- `world/jajce/ForestEdgeResourceCluster.tscn`
+- `world/jajce/TerrainResourceCluster.gd`
+- `tests/jajce_forest_edge_cluster_test.gd`
+
+The images use the same 1280×720 camera, fixed daylight value, warmup, and
+Metal renderer. Debug labels are hidden. The before frame shows two generic
+resource boxes below disconnected south-edge trees. The authored frame uses
+the same finite IDs as the two central harvestable trees; the depleted frame
+shows those two as stumps while the decorative forest silhouette remains.
+
+## Visual reduction
+
+The forest edge contains:
+
+- 10 low-poly fern clumps;
+- 8 oversized cream-stem, warm-cap mushrooms;
+- 6 flattened forest stones;
+- 2 decorative deciduous silhouette trees; and
+- 2 finite harvestable trees with amount-derived crowns and stumps.
+
+The 24 understory details use three `MultiMeshInstance3D` batches. The two
+existing south-edge conifers remain outside the cluster and frame it at a
+larger scale. This keeps the grove legible from the village without turning the
+whole terrain into dense foliage.
+
+## Authority and shared authoring contract
+
+`ResourceAnchors` contains only `tree_forest_grove_01` and
+`tree_forest_grove_02`, preserving their definitions and the existing total of
+eighteen finite resources. `DecorativeInstances` contains no `ResourceNode`
+descendants and never enters saves, reservations, checksums, or conservation.
+
+The riverbank and forest edge are now the two concrete consumers of
+`TerrainResourceCluster`. That small shared base owns only their proven scene
+contract: terrain snapping for authored trees and interaction points, bounded
+MultiMesh placement, fern mesh construction, resource-anchor enumeration, and
+presentation statistics. Resource-specific palettes, offsets, and meshes stay
+in each cluster.
+
+Both finite trees reuse `HarvestableTreePresentation`. Depletion therefore
+removes only the authoritative standing trees; the two decorative trees and
+surrounding conifers remain, giving the living world an honest but not barren
+silhouette.
+
+## Discovery, navigation, and restore proof
+
+The trees moved roughly five metres deeper into the forest edge. Their
+village-facing interaction points are approximately 26.5 m and 26.2 m from the
+village origin, beyond the adapter's initial 24 m query. The focused scenario
+confirms both IDs appear only in the farther query, disables every other wood
+source, and resolves `tree_forest_grove_01` after more than one range pass.
+
+The same scenario asks the project-owned navigation map for real paths to both
+interaction points, verifies each endpoint is reached, and checks every route
+point against Terrain3D height. No terrain or navigation rebake was needed.
+
+Finally, the test leaves the first tree at one configured yield, saves that low
+state, and completes a real reserved NPC gather. The exact yield enters NPC
+inventory and the tree becomes a stump. Restoring the snapshot rebinds the
+same stable ID and reconstructs the sparse standing crown from authoritative
+amount alone.
+
+## Next slice
+
+Introduce one named goat as an identity-backed simulation entity rather than a
+resource prop. Its stable ID, position, and hunger/feed state should be saved;
+one NPC and the player should share an exact feed interaction that withdraws
+real pantry food. A herd, breeding, products, and animal spatial indexing stay
+deferred until that contract is proven.
+
+## Capture commands
+
+```bash
+HOME="$PWD/logs/quality/godot_profile" \
+APPDATA="$PWD/logs/quality/godot_profile" \
+LOCALAPPDATA="$PWD/logs/quality/godot_profile" \
+/Applications/Godot.app/Contents/MacOS/Godot \
+  --path "$PWD" --script res://tools/capture_jajce_lookdev.gd -- \
+  --scene=res://world/jajce/JajceForestEdgeLookdev.tscn \
+  --output=res://docs/baselines/jajce_forest_edge_06_after.png \
+  --hide-resource-labels
+```
+
+For the depleted frame, append:
+
+```text
+--resource-amount=tree_forest_grove_01:0
+--resource-amount=tree_forest_grove_02:0
+```

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