feat: A-frame tent + portal walk-through field + texture polish

- camping: replace cube tent with A-frame slope panels (tent_panel_l/r) +
  cardinal_direction permutations; vote-skip sleep that mixes
  player.isSleeping bed sleepers with tent occupants and respects the
  playersSleepingPercentage gamerule; new weathered-canvas texture.
- lobby: walk-through silverlabs:portal_field block (no collision,
  translucent swirl, cross-plane geo) auto-placed above each portal frame;
  invisible silverlabs:portal_label entity floats above each portal with
  the destination world name; transfer detection now scans down through
  the field to find the destination frame.
- postal: regenerate post_office and mailbox block textures so they fill
  the full block face (brick + POST plaque, full red panel with slot/latch
  /flag/rivets) instead of small sprites floating on transparent.
- dynamite + tow-boat: ship the addons (volumes wired into all four
  worlds; enabled_packs registers them into Mya's world).
- art: build-textures.py extended; build-art-catalog.py added to project.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

village-evolution-addon/enabled_packs.json

@@ -4,11 +4,15 @@
     {"pack_id": "9a3f8d2e-7c5b-4e1a-b9d2-1f6e3c4a8b50", "version": [1, 0, 0]},
     {"pack_id": "c8e51d72-9a4f-4b3e-b8c1-2f7d3e6a4b80", "version": [1, 0, 0]},
     {"pack_id": "b4d72e91-8c43-4f1a-95d2-7e3b6c8a0d10", "version": [1, 0, 0]},
-    {"pack_id": "d7a4b9c1-2e3f-4a5b-8c6d-1f2e3d4c5b60", "version": [1, 0, 0]}
+    {"pack_id": "d7a4b9c1-2e3f-4a5b-8c6d-1f2e3d4c5b60", "version": [1, 0, 0]},
+    {"pack_id": "fac83943-16bc-4790-aa05-631894f59a03", "version": [1, 0, 0]},
+    {"pack_id": "a35d89fd-99e1-497a-9e78-35443c0cd59f", "version": [1, 0, 0]}
   ],
   "resource_packs": [
     {"pack_id": "9a3f8d2e-7c5b-4e1a-b9d2-1f6e3c4a8b53", "version": [1, 0, 1]},
     {"pack_id": "c8e51d72-9a4f-4b3e-b8c1-2f7d3e6a4b83", "version": [1, 0, 1]},
-    {"pack_id": "d7a4b9c1-2e3f-4a5b-8c6d-1f2e3d4c5b63", "version": [1, 0, 0]}
+    {"pack_id": "d7a4b9c1-2e3f-4a5b-8c6d-1f2e3d4c5b63", "version": [1, 0, 0]},
+    {"pack_id": "a18bdde1-53f8-49aa-b06d-6f0ec6c45b46", "version": [1, 0, 0]},
+    {"pack_id": "c6193eda-f160-475b-ab65-fca17741e41b", "version": [1, 0, 0]}
   ]
 }