Expansion phase: settlements — the North joins the world

Runs 5-6 logged in FINDINGS.md (soul layer validated: nature debris
0.000 vs selfish 0.225 after two years; the ledger works).

Towns are now real spatial structure: TownDef seeds (South at the
bottom of the map, North at the top), NPCs affiliate with a home town,
communal duty serves your own settlement (buildings are town-tagged,
founding uses the town centroid and per-town shelter caps), and each
town raises its own shelters and granary. Generational (North) soul
profile added — temperament only until the knowledge system lands.
Map shows town labels; rosters and CSVs carry town columns.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

FINDINGS.md

@@ -95,13 +95,60 @@ East.
 
 ---
 
+## Run 5 — The soul layer, uncalibrated: everyone a sinner
+
+**Setup:** warmth echoes (memory replaces omniscience), refusal debris,
+commons-line harvest debris, soul-to-soul atmospheric pressure, debris
+metabolic tax (faster drain, weaker meals).
+
+**Result:** justice arrived — all 108 refusals belonged to the selfish
+three, whose health collapsed to 31–64 while nature souls held 100 (the
+selfish never rest, so they have no healing loop — laziness blocking
+recovery is fully emergent). But two pathologies: (1) the whole village
+ratcheted to maxed others-regard debris, because the 50% commons penalty
+line sat above the nature souls' own 45% harvest floor and debris had no
+clearing path — harm without healing; (2) warmth-weighted asking plus
+near-total gift transfers produced a 2,501-gift winter food-swapping
+loop, and the universal debris tax turned the hungry gap into famine
+(village nourishment 0.00).
+
+**Lesson:** a moral system needs calibrated innocence and a redemption
+path, or it converges to universal guilt and reads as noise.
+
+## Run 6 — The soul layer, calibrated: the ledger works
+
+**Setup:** commons line lowered to 40% (below any respectful floor);
+gifts capped (keep 5, give ≤3, ask only when genuinely hungry); giving
+heals the giver (−0.003 others-regard vs +0.02 per refusal — harm ~7×
+easier than healing).
+
+**Result — the design document, in numbers:**
+- **Nature souls: debris 0.000 after two years.** The innocent are
+  innocent.
+- **Selfish souls: 0.225 and climbing.** The debris gap is total and
+  driven entirely by how each soul lives.
+- Gift ping-pong dead (2 gifts); the contact log is 18 refusals — in the
+  hungry gap the only villagers with surplus are the hoarders, so the
+  starving ask them, are refused, and learn. The village's warmth map is
+  a map of learned coldness pointing at three names.
+- Material consequences within one lifetime are mild — the selfish stay
+  comfortable. **The sim's justice is written in the souls, not the
+  outcomes.** That is correct: in the full game, the ledger cashes out
+  at death (heavy debris carries forward; the rebirth verdict; the grave
+  nobody tends). The sim now produces exactly the input reincarnation
+  consumes.
+
+---
+
 ## Next
 
-1. **Port the soul layer into the sim**: imprint triad accumulation,
-   social memory of gifts/refusals, consequences routed through behavior
-   (the generous get helped first; the ungenerous get asked last, served
-   last, remembered coldly). Rerun the contrast test; see if the village
-   organically stops carrying its parasites.
-2. Instrumentation gap: per-villager nourishment/health in
-   `soak_npc_days.csv` (currently the village average hides who starves).
-3. Save/load round-trip (SPEC §9 amendment) — still outstanding.
+Soul layer: done and validated (runs 5–6). The expansion phase begins:
+
+1. **Towns as spatial structure**: multiple settlements with their own
+   centroids, buildings, and granaries; NPCs affiliated with a home town
+   but free to roam — the blend space between towns becomes real.
+2. **The North (Generational) town**: second settlement; its signature
+   knowledge/teaching system (SPEC §5) is the largest unbuilt spec piece.
+3. Inter-town contact and trade routes (Phase 3); object-level soul
+   residue traveling with traded goods.
+4. Save/load round-trip (SPEC §9 amendment) — still outstanding.