fix(block2): sharing config UX + discovery + labels (raw feedback batch)

From on-device feedback:
- Area is no longer shown as a raw geohash 'name'. 'Use my location' is the
  primary action; a human status line says whether your area is set (coarse,
  never exact). The geohash code + the relay servers moved under 'Advanced'
  (code field labelled 'a code like sp3e9 — not a place name'), which also
  brings back node/relay selection that had been fully hidden.
- Location denial no longer yanks you into system settings — returns quietly
  with an actionable inline message.
- Discovery no longer spins forever when nobody's sharing nearby: a timeout
  resolves 'searching' to the empty state.
- Home card 'Open market' -> 'Market' + 'Discover and share seeds nearby'
  (the word 'open' confused).

i18n en/es/pt; analyzer clean; the use-my-location test asserts the status flip.

apps/app_seeds/lib/i18n/en.i18n.json

@@ -12,8 +12,8 @@
   },
   "home": {
     "tagline": "Share and grow local seeds",
-    "openMarket": "Open market",
-    "openMarketSubtitle": "Browse and exchange",
+    "openMarket": "Market",
+    "openMarketSubtitle": "Discover and share seeds nearby",
     "yourInventory": "Your inventory",
     "yourInventorySubtitle": "Manage your seeds"
   },
@@ -348,8 +348,13 @@
     "setupIntro": "Sharing with people nearby is optional. Just set your rough area — you're already connected to shared community servers so people can find what you offer, with no company in the middle.",
     "areaLabel": "Your area",
     "areaHelp": "Kept rough on purpose — your zone, never an exact spot.",
+    "areaSet": "Your area is set — kept coarse, never your exact spot",
+    "areaNotSet": "Area not set yet — use your location, or add a code under Advanced",
+    "advanced": "Advanced",
+    "areaCodeLabel": "Area code",
+    "areaCodeHint": "A short code like sp3e9 — not a place name",
     "serversLabel": "Community servers",
-    "serversHelp": "Pick one or more shared servers. Anyone can use them — or add your own community's below.",
+    "serversHelp": "One address per line (wss://…). Leave the defaults if unsure.",
     "serversAdvanced": "Add another server",
     "save": "Save",
     "saved": "Saved",