Fixes/location channels (#465)

* Remove "street" location channel; add coverage + names; style mesh

- Drop GeohashChannelLevel.street and update mappings/tests\n- Map geohash lengths >=8 to Block in teleport, no Street\n- Show ~distance coverage (mi/km via Locale.measurementSystem) next to each #geohash\n- Add reverse geocoding to display coarse names (country/region/city/neighborhood) per level\n- Style "#mesh" row title with toolbar blue\n- Fix iOS 16 deprecation: use Locale.measurementSystem

* Project: update Xcode project (auto)

* UI: use '~' without trailing space before location name in sheet

* Location sheet: poll for location at regular intervals while open (replace significant-move updates)

* UI: show Bluetooth range next to #bluetooth in location sheet

* UI: remove leading '#' from mesh title in location sheet

* UI: bold location name in sheet when geohash has >0 people; refactor row to render subtitle pieces

* UI: bold mesh/level titles when participant count > 0; factor meshCount()

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

bitchat/Protocols/LocationChannel.swift

@@ -2,7 +2,6 @@ import Foundation
 
 /// Levels of location channels mapped to geohash precisions.
 enum GeohashChannelLevel: CaseIterable, Codable, Equatable {
-    case street
     case block
     case neighborhood
     case city
@@ -12,7 +11,6 @@ enum GeohashChannelLevel: CaseIterable, Codable, Equatable {
     /// Geohash length used for this level.
     var precision: Int {
         switch self {
-        case .street: return 8
         case .block: return 7
         case .neighborhood: return 6
         case .city: return 5
@@ -23,7 +21,6 @@ enum GeohashChannelLevel: CaseIterable, Codable, Equatable {
 
     var displayName: String {
         switch self {
-        case .street: return "Street"
         case .block: return "Block"
         case .neighborhood: return "Neighborhood"
         case .city: return "City"
@@ -68,4 +65,3 @@ enum ChannelID: Equatable, Codable {
         }
     }
 }
-