fix(ios): restore profile dedup + remove dead reconnect path

apps/ios/ADE/Services/SyncService.swift

@@ -1423,6 +1423,24 @@ final class SyncService: ObservableObject {
       .first { !$0.isEmpty }
   }
 
+  private func profileHasTailnetRoute(_ profile: HostConnectionProfile) -> Bool {
+    if profile.tailscaleAddress != nil { return true }
+    if let last = profile.lastSuccessfulAddress, syncIsTailscaleRoute(last) { return true }
+    return profile.savedAddressCandidates.contains(where: syncIsTailscaleRoute)
+  }
+
+  private func shouldPreferProfile(_ candidate: HostConnectionProfile, over existing: HostConnectionProfile) -> Bool {
+    if candidate.updatedAt != existing.updatedAt {
+      return candidate.updatedAt > existing.updatedAt
+    }
+    let candidateTailnet = profileHasTailnetRoute(candidate)
+    let existingTailnet = profileHasTailnetRoute(existing)
+    if candidateTailnet != existingTailnet {
+      return candidateTailnet
+    }
+    return candidate.lastSuccessfulAddress != nil && existing.lastSuccessfulAddress == nil
+  }
+
   private func loadSavedProfilesRaw() -> [String: HostConnectionProfile] {
     guard let data = UserDefaults.standard.data(forKey: profilesKey) else {
       return [:]
@@ -1434,6 +1452,9 @@ final class SyncService: ObservableObject {
       var migrated: [String: HostConnectionProfile] = [:]
       for profile in legacyArray {
         guard let key = profileStorageKey(profile) else { continue }
+        if let existing = migrated[key], !shouldPreferProfile(profile, over: existing) {
+          continue
+        }
         migrated[key] = profile
       }
       syncConnectLog.warning("Migrated \(legacyArray.count, privacy: .public) legacy array-format host profiles to dict format (\(migrated.count, privacy: .public) keyed)")
@@ -1453,15 +1474,59 @@ final class SyncService: ObservableObject {
   }
 
   private func saveSavedProfiles(_ profiles: [String: HostConnectionProfile]) {
-    if profiles.isEmpty {
+    let normalized = deduplicatedProfiles(profiles)
+    if normalized.isEmpty {
       UserDefaults.standard.removeObject(forKey: profilesKey)
       return
     }
-    if let data = try? encoder.encode(profiles) {
+    if let data = try? encoder.encode(normalized) {
       UserDefaults.standard.set(data, forKey: profilesKey)
     }
   }
 
+  private func profileIdentityKeys(_ profile: HostConnectionProfile) -> [String] {
+    var keys: [String] = []
+    if let id = profile.hostIdentity?.trimmingCharacters(in: .whitespacesAndNewlines), !id.isEmpty {
+      keys.append("identity:\(id)")
+    }
+    if let device = profile.lastHostDeviceId?.trimmingCharacters(in: .whitespacesAndNewlines), !device.isEmpty {
+      keys.append("device:\(device)")
+    }
+    if let name = profile.hostName?.trimmingCharacters(in: .whitespacesAndNewlines), !name.isEmpty {
+      keys.append("name:\(name.lowercased()):\(profile.port)")
+    }
+    if let last = profile.lastSuccessfulAddress?.trimmingCharacters(in: .whitespacesAndNewlines), !last.isEmpty {
+      keys.append("addr:\(last):\(profile.port)")
+    }
+    return keys
+  }
+
+  private func deduplicatedProfiles(_ profiles: [String: HostConnectionProfile]) -> [String: HostConnectionProfile] {
+    var canonicalProfiles: [HostConnectionProfile] = []
+    var keyToIndex: [String: Int] = [:]
+    for profile in profiles.values {
+      let identityKeys = profileIdentityKeys(profile)
+      let matchedIndex = identityKeys.lazy.compactMap { keyToIndex[$0] }.first
+      if let index = matchedIndex {
+        if shouldPreferProfile(profile, over: canonicalProfiles[index]) {
+          canonicalProfiles[index] = profile
+        }
+        for key in identityKeys { keyToIndex[key] = index }
+      } else {
+        let index = canonicalProfiles.count
+        canonicalProfiles.append(profile)
+        for key in identityKeys { keyToIndex[key] = index }
+      }
+    }
+    var byKey: [String: HostConnectionProfile] = [:]
+    byKey.reserveCapacity(canonicalProfiles.count)
+    for profile in canonicalProfiles {
+      guard let key = profileStorageKey(profile) else { continue }
+      byKey[key] = profile
+    }
+    return byKey
+  }
+
   private func migrateTokenIfNeeded(for profile: HostConnectionProfile) {
     guard let key = profileStorageKey(profile),
           keychain.loadToken(hostKey: key) == nil,
@@ -1639,37 +1704,6 @@ final class SyncService: ObservableObject {
     lastError = nil
   }
 
-  func reconnectToSavedHost(_ host: DiscoveredSyncHost, preferTailnet: Bool = false) async {
-    guard let profile = profile(forSavedHost: host), let token = tokenForProfile(profile) else {
-      lastError = "That saved host is missing pairing credentials. Pair it again from Settings."
-      connectionState = .error
-      return
-    }
-    keychain.saveToken(token)
-    saveProfile(profile)
-    await reconnectIfPossible(userInitiated: true, preferTailnet: preferTailnet || host.tailscaleAddress != nil)
-  }
-
-  private func profile(forSavedHost host: DiscoveredSyncHost) -> HostConnectionProfile? {
-    let normalizedHostId = host.hostIdentity?.trimmingCharacters(in: .whitespacesAndNewlines).lowercased()
-    let hostAddresses = Set((host.addresses + (host.tailscaleAddress.map { [$0] } ?? [])).map(syncNormalizedRouteHost))
-    return loadSavedProfiles().values.first { profile in
-      if let normalizedHostId,
-         let profileIdentity = profile.hostIdentity?.trimmingCharacters(in: .whitespacesAndNewlines).lowercased(),
-         profileIdentity == normalizedHostId {
-        return true
-      }
-      let profileAddresses = Set(
-        (profile.savedAddressCandidates
-         + profile.discoveredLanAddresses
-         + (profile.lastSuccessfulAddress.map { [$0] } ?? [])
-         + (profile.tailscaleAddress.map { [$0] } ?? []))
-          .map(syncNormalizedRouteHost)
-      )
-      return !profileAddresses.isDisjoint(with: hostAddresses)
-    }
-  }
-
   private func shouldPreferTailnetForUserReconnect(_ profile: HostConnectionProfile) -> Bool {
     guard let snapshot = lastNetworkPathSnapshot else { return false }
     return syncShouldRoamToTailnet(