Fix/UI (#500)

* Remove link previews: link URLs inline\n\n- Delete LinkPreviewView and all references\n- Strip preview usage from ContentView\n- Make detected URLs tappable via .link attribute\n- Add MessageTextHelpers for tokens/length checks\n- Wire helpers into iOS/macOS targets

* Peer list UX: match message colors, use map pin icon, stable ordering\n\n- Color list names and icons with same peer color as messages\n- Default icon mappin; teleported uses face.dashed (iOS)\n- Geohash: move teleported peers to bottom\n- Maintain stable order: append new peers, remove missing\n- Mesh list: replace state icons with colored mappin/person

* Fix peer list build errors: remove ambiguous Set type, avoid guard in ViewBuilder, remove duplicate bindings, and simplify person lookup

* Peer list: remove onChange expressions to avoid type-check issues; rely on ObservedObject updates

* Peer lists: simplify view structure to satisfy SwiftUI type checker (replace Group with VStack, flatten body)

* Peer lists: move ordering mutations to onAppear/onChange, keep body pure; fix result builder errors

* Fix: remove trailing modifiers outside if/else to avoid ViewBuilder type issues

* Color parity: fix seed cache to include color scheme; normalize Nostr seeds; switch to mappin.circle icon

* Peer colors: ensure exact match with message colors\n\n- Mesh list uses same seed logic as messages (getNoiseKeyForShortID fallback)\n- Color cache keyed by theme; normalize nostr seeds\n- Icons: use mappin.and.ellipse (default) and face.dashed for teleported\n- Teleport tag: accept "teleported" in addition to "teleport" and presence events

* Fix geohash color mismatch: populate nostrKeyMapping before building messages in resubscribe; also honor t,teleport tag for teleported state

* Message actions: username tap opens sheet via clickable AttributedString; message tap inserts @mention; rename to 'direct message'

* Cashu UX: suppress 'Show more' when message contains a Cashu token (chips handle rendering)

* Cashu detection: broaden regex (allow '.') + shorter min length; avoid long-text fallback when Cashu present so chips render and no full blob

* Geohash levels: rename region->province, country->region; update labels, precision, UI, manager mapping, tests; add Codable backward-compat for renamed cases

* Fix braces in LocationChannel.swift: close enum before extension to satisfy file-scope declarations

* Geohash links: make #geohash tappable and open that channel (bitchat://geohash/<gh>); handle in ContentView.onOpenURL with validation and selection

* Underline tappable #geohash mentions for clarity

* Geochat: sanitize timeline on channel switch to remove any blank-content entries (prevents blank rows)

* Xcode project: sync sources after UI changes (remove LinkPreview, add helpers, update build refs)

---------

Co-authored-by: jack <jackjackbits@users.noreply.github.com>

bitchat/Protocols/LocationChannel.swift

@@ -5,8 +5,8 @@ enum GeohashChannelLevel: CaseIterable, Codable, Equatable {
     case block
     case neighborhood
     case city
-    case region
-    case country
+    case province   // previously .region
+    case region     // previously .country
 
     /// Geohash length used for this level.
     var precision: Int {
@@ -14,9 +14,9 @@ enum GeohashChannelLevel: CaseIterable, Codable, Equatable {
         case .block: return 7
         case .neighborhood: return 6
         case .city: return 5
-        case .region: return 4
-        case .country: return 2
-        }
+        case .province: return 4
+        case .region: return 2
+    }
     }
 
     var displayName: String {
@@ -24,8 +24,48 @@ enum GeohashChannelLevel: CaseIterable, Codable, Equatable {
         case .block: return "Block"
         case .neighborhood: return "Neighborhood"
         case .city: return "City"
+        case .province: return "Province"
         case .region: return "Region"
-        case .country: return "Country"
+    }
+}
+}
+// Backward-compatible Codable for renamed cases
+extension GeohashChannelLevel {
+    init(from decoder: Decoder) throws {
+        let container = try decoder.singleValueContainer()
+        if let raw = try? container.decode(String.self) {
+            switch raw {
+            case "block": self = .block
+            case "neighborhood": self = .neighborhood
+            case "city": self = .city
+            case "region": self = .province      // old "region" maps to new .province
+            case "country": self = .region       // old "country" maps to new .region
+            case "province": self = .province
+            default:
+                self = .block
+            }
+        } else if let precision = try? container.decode(Int.self) {
+            switch precision {
+            case 7: self = .block
+            case 6: self = .neighborhood
+            case 5: self = .city
+            case 4: self = .province
+            case 0...3: self = .region
+            default: self = .block
+            }
+        } else {
+            self = .block
+        }
+    }
+
+    func encode(to encoder: Encoder) throws {
+        var container = encoder.singleValueContainer()
+        switch self {
+        case .block: try container.encode("block")
+        case .neighborhood: try container.encode("neighborhood")
+        case .city: try container.encode("city")
+        case .province: try container.encode("province")
+        case .region: try container.encode("region")
         }
     }
 }