Merge Workstream F: unlocks/inventory UI + sigil designer + listening tool

frontend/src/i18n/en.json

@@ -13,6 +13,7 @@
     "home": "the threshold",
     "codex": "codex",
     "shop": "shop",
+    "inventory": "inventory",
     "seance": "séance",
     "enter": "enter",
     "logout": "depart"
@@ -405,6 +406,43 @@
     },
     "honesty": "the Ultimate Quantum Box is in active development — this is a reservation manifest, no payment is taken. the website works fully without it; hardware only knocks louder."
   },
+  "inventory": {
+    "back": "← back to the séance",
+    "pageTitle": "THE SHELF",
+    "pageSubtitle": "what the veil has left you, and what it will still trade for",
+    "title": "inventory",
+    "essenceLabel": "essence",
+    "unlocksTitle": "unlocks",
+    "noUnlocks": "nothing unlocked yet",
+    "ownedTag": "[OWNED]",
+    "lockedTag": "[LOCKED]",
+    "priceValue": "{{price}} essence",
+    "priceUnknown": "price unknown",
+    "priceEstimate": "(est.)",
+    "buy": "buy",
+    "buying": "buying…",
+    "buyInsufficient": "not enough essence",
+    "buyError": "the purchase failed",
+    "itemsTitle": "items",
+    "itemsLoading": "reading the shelf…",
+    "itemsEmpty": "nothing collected yet",
+    "sigil": {
+      "title": "sigil designer",
+      "canvasLabel": "circle of anchor points",
+      "slotLabel": "anchor point {{slot}}",
+      "coordLabel": "coords",
+      "hoverHint": "hover an anchor point",
+      "pointsLabel": "points",
+      "lastLabel": "last",
+      "runeLabel": "rune",
+      "nameLabel": "name",
+      "namePlaceholder": "untitled sigil",
+      "save": "inscribe sigil",
+      "saving": "inscribing…",
+      "saved": "the sigil is bound",
+      "error": "the sigil would not hold"
+    }
+  },
   "haunting": {
     "whisper": {
       "behindYou": "behind you",