feat: filter mesh, geohash, bridge, and group rows by name

Each people-sheet section accepts an optional nameFilter so a shared
search field can narrow nicknames without reshaping PeerListModel.

bitchat/Views/BridgePeopleList.swift

@@ -39,6 +39,8 @@ struct PeopleSectionHeader: View {
 struct BridgePeopleList: View {
     @ObservedObject private var bridgeService = BridgeService.shared
     @ThemedPalette private var palette
+    /// People-sheet search query; empty means show every row.
+    var nameFilter: String = ""
 
     private enum Strings {
         static let sectionTitle = String(localized: "bridge_people.section_title", defaultValue: "across the bridge", comment: "Section header in the people sheet for participants reachable via the mesh bridge")
@@ -50,7 +52,10 @@ struct BridgePeopleList: View {
         // (a serving neighbor's carriers) even while this device's own
         // bridge is off — whoever is visible in the timeline belongs in the
         // sheet.
-        if !bridgeService.bridgedParticipants.isEmpty {
+        let people = bridgeService.bridgedParticipants.filter {
+            PeopleNameFilter.matches($0.displayName, query: nameFilter)
+        }
+        if !people.isEmpty {
             VStack(alignment: .leading, spacing: 0) {
                 PeopleSectionHeader(
                     icon: "network",
@@ -58,7 +63,7 @@ struct BridgePeopleList: View {
                     title: Strings.sectionTitle
                 )
 
-                ForEach(bridgeService.bridgedParticipants) { person in
+                ForEach(people) { person in
                     HStack(spacing: 4) {
                         Text(person.displayName)
                             .bitchatFont(size: 14)

bitchat/Views/GeohashPeopleList.swift

@@ -4,13 +4,16 @@ struct GeohashPeopleList: View {
     @EnvironmentObject private var peerListModel: PeerListModel
     @ThemedPalette private var palette
     let onTapPerson: () -> Void
+    /// People-sheet search query; empty means show every row.
+    var nameFilter: String = ""
     @Environment(\.colorScheme) var colorScheme
     @State private var orderedIDs: [String] = []
 
     private enum Strings {
         static let noneNearby: LocalizedStringKey = "geohash_people.none_nearby"
+        static let noMatches: LocalizedStringKey = "content.people.search.no_matches"
         static let youSuffix: LocalizedStringKey = "geohash_people.you_suffix"
-        static let blockedTooltip = String(localized: "geohash_people.tooltip.blocked", comment: "Tooltip shown next to users blocked in geohash channels")
+        static let blockedTooltip = String(localized: "geohash_people.tooltip.blocked", comment: "Tooltip shown next to people blocked in geohash channels")
         static let unblock: LocalizedStringKey = "geohash_people.action.unblock"
         static let block: LocalizedStringKey = "geohash_people.action.block"
         static let unblockText = String(localized: "geohash_people.action.unblock", comment: "Context menu action to unblock a person")
@@ -32,7 +35,19 @@ struct GeohashPeopleList: View {
                     .padding(.top, 12)
             }
         } else {
-            let people = peerListModel.geohashPeople
+            let people = peerListModel.geohashPeople.filter {
+                PeopleNameFilter.matches($0.displayName, query: nameFilter)
+            }
+            let filterActive = !nameFilter.trimmingCharacters(in: .whitespacesAndNewlines).isEmpty
+            if people.isEmpty && filterActive {
+                VStack(alignment: .leading, spacing: 0) {
+                    Text(Strings.noMatches)
+                        .bitchatFont(size: 14)
+                        .foregroundColor(palette.secondary)
+                        .padding(.horizontal)
+                        .padding(.top, 12)
+                }
+            } else {
             let currentIDs = people.map(\.id)
 
             let displayIDs = orderedIDs.filter { currentIDs.contains($0) } + currentIDs.filter { !orderedIDs.contains($0) }
@@ -152,6 +167,7 @@ struct GeohashPeopleList: View {
                 for id in ids where !newOrder.contains(id) { newOrder.append(id) }
                 if newOrder != orderedIDs { orderedIDs = newOrder }
             }
+            }
         }
     }
 

bitchat/Views/GroupChatList.swift

@@ -8,6 +8,8 @@ struct GroupChatList: View {
 
     let groups: [GroupChatRow]
     let onTapGroup: (PeerID) -> Void
+    /// People-sheet search query; empty means show every row.
+    var nameFilter: String = ""
 
     private enum Strings {
         static let header = String(localized: "groups.section.header", comment: "Section header above the private groups list")
@@ -19,7 +21,8 @@ struct GroupChatList: View {
     }
 
     var body: some View {
-        if !groups.isEmpty {
+        let visible = groups.filter { PeopleNameFilter.matches($0.name, query: nameFilter) }
+        if !visible.isEmpty {
             VStack(alignment: .leading, spacing: 0) {
                 // Same glyph+label header shape as #mesh / across the bridge.
                 PeopleSectionHeader(
@@ -28,7 +31,7 @@ struct GroupChatList: View {
                     title: Strings.header
                 )
 
-                ForEach(groups) { group in
+                ForEach(visible) { group in
                     HStack(spacing: 4) {
                         Text("#\(group.name)")
                             .bitchatFont(size: 14)

bitchat/Views/MeshPeerList.swift

@@ -10,12 +10,15 @@ struct MeshPeerList: View {
     /// Optional so existing call sites (and previews/tests) keep compiling;
     /// when absent the block/unblock context-menu entry is hidden.
     var onToggleBlock: ((MeshPeerRow) -> Void)? = nil
+    /// People-sheet search query; empty means show every row.
+    var nameFilter: String = ""
     @Environment(\.colorScheme) var colorScheme
 
     @State private var orderedIDs: [String] = []
 
     private enum Strings {
         static let noneNearby: LocalizedStringKey = "geohash_people.none_nearby"
+        static let noMatches: LocalizedStringKey = "content.people.search.no_matches"
         static let blockedTooltip = String(localized: "geohash_people.tooltip.blocked", comment: "Tooltip shown next to a blocked peer indicator")
         static let newMessagesTooltip = String(localized: "mesh_peers.tooltip.new_messages", comment: "Tooltip for the unread messages indicator")
         static let connected = String(localized: "content.accessibility.connected_mesh", comment: "Accessibility label for mesh-connected peer indicator")
@@ -41,7 +44,8 @@ struct MeshPeerList: View {
         let displayIDs = orderedIDs.filter { currentIDs.contains($0) } + currentIDs.filter { !orderedIDs.contains($0) }
         let peers: [MeshPeerRow] = displayIDs.compactMap { id in
             peerListModel.meshRows.first(where: { $0.id == id })
-        }
+        }.filter { PeopleNameFilter.matches($0.displayName, query: nameFilter) }
+        let filterActive = !nameFilter.trimmingCharacters(in: .whitespacesAndNewlines).isEmpty
 
         if peerListModel.meshRows.isEmpty {
             // Match the section's row rhythm (same size, indent, and vertical
@@ -52,6 +56,12 @@ struct MeshPeerList: View {
                 .foregroundColor(palette.secondary)
                 .padding(.horizontal)
                 .padding(.vertical, 4)
+        } else if peers.isEmpty && filterActive {
+            Text(Strings.noMatches)
+                .bitchatFont(size: 14)
+                .foregroundColor(palette.secondary)
+                .padding(.horizontal)
+                .padding(.vertical, 4)
         } else {
             VStack(alignment: .leading, spacing: 0) {
                 ForEach(0..<peers.count, id: \.self) { idx in