Crafting stations, strongboxes and bags

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

README.md

@@ -51,6 +51,13 @@ Alpha. One season, bandit raids plus two friendly events, six buildings.
   area. Rings for offence (swing speed, crit, power), amulets for defence (max
   HP, ward, regen), trinkets for the rest (XP, double gathering,
   masterwork).
+- **Stations and storage:** builders make a station for every crafting
+  skill (anvil stand, jeweller's bench, hearth, alembic, tanning rack, loom),
+  as fast as the smith's tools for gathering, from the tier's planks and
+  hardware and another trade's bars, leather or cloth. Builders also make
+  strongboxes (+2 to +14 bank slots) and homesteaders sew bags (+250 to
+  +2,000 per stack); each has one slot on the Bank page, and a smaller one
+  can't go on while the bank holds more than it would.
 - **Tiers:** six RuneScape-style tiers (copper, iron, steel, mithril,
   adamant, rune at levels 1–75) of ore, trees (up to enchanted), hides (deer,
   boar, bear, elk, sabrecat, mammoth) and fibres (flax, cotton, silk,