Merge pull request 'pack: v0.37.0 — village supply/demand + Structory structure mods' (#75) from feature/v0.37.0-villages-and-structures into main

Pre-wipe consolidation. After this, the seed pick is unblocked.

bnstoolkit 0.4.1 → 0.5.0 — village supply/demand throttle
- 64×64 block tiles each have a finite demand pool per cost item
- Spur-paying trades decrement their tile's pool; pool refills over 1
  hour real-time (lazy refresh, no scheduled tick, no perf overhead)
- Saturated trades show vanilla "out of stock" in the UI until the
  villager restocks AND the tile's demand has refilled
- ~150 spurs/hour cap per tile in a fully-stocked multi-profession hall
- 50-librarian-hall exploit dies; players who want more income must
  build halls in distant tiles (overworld logistics) OR diversify
  professions (each item type has its own pool)
- Anyone with /bns admin can inspect a tile's state — full picture
  lives in server.persistentData.bnsVillageDemand

New worldgen mods (Modrinth — both NeoForge 1.21.1):
- Structory 1.3.16 — 15 small thematic ruins: chapels, graveyards,
  fire-watch towers, abandoned camps, boats, outcast huts
- Structory: Towers 1.0.16 — 21 mid/rare-tier towers: lighthouses,
  engineer's tower, ocean pillars, wizard towers, end towers

Density assessment (per earlier audit): pack goes from ~52 to ~88
generating structure types. Towers are mostly rare-tier (40-80 chunk
spacing) so they read as discoveries, not clutter. Loot is in line
with vanilla bastion/mansion tier — finite chest pool that the
diminishing-returns sell shop and village supply system already
balance against.

Pack mods: 102 → 104.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

pack/pack.lock.json

@@ -1,13 +1,13 @@
 {
   "$schema": "Brass-and-Sigil pack.lock.json - generated, do not edit by hand unless you know what you are doing",
   "name": "Brass and Sigil",
-  "version": "0.36.0",
+  "version": "0.37.0",
   "minecraft": "1.21.1",
   "loader": {
     "type": "neoforge",
     "version": "21.1.228"
   },
-  "lockedAt": "2026-06-07T09:27:18Z",
+  "lockedAt": "2026-06-07T16:26:12Z",
   "mods": [
     {
       "source": "modrinth",
@@ -1130,6 +1130,28 @@
       "sha1": "07fdfa3a75c3481770ce0118090a347d89e3a560",
       "size": 88382,
       "side": "both"
+    },
+    {
+      "source": "modrinth",
+      "slug": "structory",
+      "versionId": "Nvh2sSPX",
+      "version": "1.3.16",
+      "path": "mods/Structory_26.1_v1.3.16.jar",
+      "url": "https://cdn.modrinth.com/data/aKCwCJlY/versions/Nvh2sSPX/Structory_26.1_v1.3.16.jar",
+      "sha1": "ee48f145a3a09fdb3f492576cbc21ed26abc74bb",
+      "size": 1261336,
+      "side": "both"
+    },
+    {
+      "source": "modrinth",
+      "slug": "structory-towers",
+      "versionId": "ioKwCTuD",
+      "version": "1.0.16",
+      "path": "mods/Structory_Towers_26.1_v1.0.16.jar",
+      "url": "https://cdn.modrinth.com/data/j3FONRYr/versions/ioKwCTuD/Structory_Towers_26.1_v1.0.16.jar",
+      "sha1": "ed22fe659cb3020f2e86b7619ce721714b9546be",
+      "size": 491545,
+      "side": "both"
     }
   ],
   "defaultServer": {