ios: resolve SimpleX names on search, show each result once

The keyboard Search key on the chat list now also resolves a typed
SimpleX name online, alongside the directory search, and shows what it
finds as a Names part between the local chats and the directory
results. Resolution never raises an alert: apiConnectPlan gains an
onFailure mode, and existing callers keep alerting by default.

Each directory entry is looked up in the store (store-only, as entries
are now group or channel links only) so a chat the user already sees
locally, or found by name, is not shown again; names already in the
local list are hidden the same way. A directory row is matched to a
name only by the link the core resolved, never by a profile field the
name's owner writes, so a name cannot hide a genuine directory row.

The "Search in Directory" row, retry and "Show more" keep the names
already shown. One helper drives the spinner from whether anything is
in flight, and every publish checks the search generation, so a late
reply after a text change or cancel writes nothing. The first-search
alert now also names the server that resolves names.

Run: 002-ios-directory-search-ui, slice 3

apps/ios/Shared/Model/SimpleXAPI.swift

@@ -1057,7 +1057,11 @@ func apiSearchDirectory(_ text: String, cursor: JSONValue?) async -> DirectorySe
     return nil
 }
 
-func apiConnectPlan(connLink: String, resolveMode: PlanResolveMode = .unknown, linkOwnerSig: LinkOwnerSig? = nil, inProgress: BoxedValue<Bool>) async -> ConnectionPlanResult? {
+enum ConnectPlanFailure {
+    case alert, log
+}
+
+func apiConnectPlan(connLink: String, resolveMode: PlanResolveMode = .unknown, linkOwnerSig: LinkOwnerSig? = nil, inProgress: BoxedValue<Bool>, onFailure: ConnectPlanFailure = .alert) async -> ConnectionPlanResult? {
     guard let userId = ChatModel.shared.currentUser?.userId else {
         logger.error("apiConnectPlan: no current user")
         return nil
@@ -1068,7 +1072,12 @@ func apiConnectPlan(connLink: String, resolveMode: PlanResolveMode = .unknown, l
     }
     // a .never (typing) search that matches nothing locally is not an error to surface
     if case .error(.error(.notResolvedLocally)) = r { return nil }
-    if let r { await apiConnectResponseAlert(r) }
+    if let r {
+        switch onFailure {
+        case .alert: await apiConnectResponseAlert(r)
+        case .log: logger.debug("apiConnectPlan: \(String(describing: r))")
+        }
+    }
     return nil
 }