M8: progression, items, bankarta och sparfil

- internal/progress: katalog (skills.json 12 noder, items.json 25 items)
  med validering; XP/nivåer (150·n(n+1)/2) och skillpoäng; skillträd med
  krav och kostnad; items per plats med buffar, genvägar (JR Pass, kartor,
  powerbank) och färgton; banresultat och upplåsning (huvudbanor i ordning,
  sidospår efter föräldern); 33 %-regeln som test
- internal/save: versionerad JSON med kunskap, plånbok, debuffar,
  progression och pågående bana + seed; atomisk skrivning; migrering;
  ~/.config/metro-puzzle-jp/save.json resp. %AppData%
- sim: RunOptions får Extra/FogRadius/Landmarks/FreeGates/RevealAll/
  InfiniteBattery; luck påverkar trängselzonen; Fog.RevealAll och extra
  landmärken
- game: bankarta i spelbrädesstil ersätter menyn (⟳ återupptar med sparad
  seed), skillträd (T), garderob (I), butik i kiosken (B), XP/nivå/items/
  upplåsningar på resultatet, spelaren tonas av skins; autospar vid banstart,
  efter banan och vid köp; flaggor -save/-nosave
- level: kind/order/parent/rewards/shop; ny sidobana 002b Kabukicho som
  belönar skinnet Kimono; 001 belönar Salaryman-skinnet; butikssortiment
  på 002/003
- tools/shots: demo-sparfil (build/, aldrig den riktiga), bilder av karta,
  skills, garderob och butik; alla körningar med -nosave
- docs/README/wiki uppdaterade

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

resources/text/en.json

@@ -20,7 +20,7 @@
   "hud.steps": "Steps",
   "hud.controls": "Esc: menu  M: map",
   "level.wrong_train": "Wrong train!",
-  "result.hint": "R: replay   L: word list   Enter/Esc: menu",
+  "result.hint": "R: replay   L: word list   Enter/Esc: map",
   "hud.card": "Card",
   "hud.track": "Track",
   "hud.next_train_in": "Next train in",
@@ -132,5 +132,54 @@
   "hud.arriving": "The train is pulling in…",
   "hud.closing": "Doors closing - board now!",
   "hud.leaving": "The train is leaving…",
-  "hud.train_near": "Train approaching!"
+  "hud.train_near": "Train approaching!",
+  "map.level": "Level",
+  "map.xp": "XP",
+  "map.skill_points": "Skill points",
+  "map.side": "Side trip",
+  "map.party": "Party",
+  "map.resume": "⟳ resume (saved seed)",
+  "map.locked": "Locked – clear the previous level first.",
+  "map.hint": "Arrows: level  Enter: start  L: words  T: skills  I: wardrobe  P: phone  Esc",
+  "skills.title": "Skills  技",
+  "skills.to_next": "XP to next",
+  "skills.already": "Already unlocked.",
+  "skills.unlocked": "Unlocked: %s",
+  "skills.need_points": "Costs %d skill points – level up by clearing levels.",
+  "skills.need_req": "Requires an earlier skill in the branch.",
+  "skills.hint": "Arrows: select   Enter: unlock   Esc/T: back",
+  "items.title": "Wardrobe  持ち物",
+  "items.owned": "items",
+  "items.owned_short": "owned",
+  "items.wearing": "worn",
+  "items.none": "Nothing yet – buy at kiosks (B) or clear side trips.",
+  "items.worn": "You wear %s.",
+  "items.removed": "You took off %s.",
+  "items.total": "Total",
+  "items.hint": "Arrows: select   Enter: wear/remove   Esc/I: back",
+  "shop.title": "Shop",
+  "shop.owned": "You already have that.",
+  "shop.bought": "Bought: %s",
+  "shop.too_expensive": "You cannot afford it.",
+  "shop.hint": "Arrows: select   Enter: buy   Esc/B: close",
+  "hud.shop_prompt": "B: shop",
+  "result.level_up": "Level up!",
+  "result.new_items": "New",
+  "result.unlocked": "Unlocked",
+  "stat.speed": "speed",
+  "stat.thirst": "thirst",
+  "stat.focus": "focus",
+  "stat.toilet": "toilet",
+  "stat.luck": "luck",
+  "slot.head": "head",
+  "slot.face": "face",
+  "slot.body": "body",
+  "slot.feet": "feet",
+  "slot.bag": "bag",
+  "effect.kana": "reads kana",
+  "effect.fog": "+%d sight",
+  "effect.landmarks": "landmarks on map",
+  "effect.free_gates": "free gates",
+  "effect.reveal": "map: %s",
+  "effect.battery": "infinite battery"
 }