Stabilize beta release with warning cleanup and edge-case fixes

SportsTime/Features/Polls/Views/PollsListView.swift

@@ -12,9 +12,10 @@ struct PollsListView: View {
     @State private var polls: [TripPoll] = []
     @State private var isLoading = false
     @State private var hasLoadedInitially = false
-    @State private var error: PollError?
+    @State private var errorMessage: String?
     @State private var showJoinPoll = false
     @State private var joinCode = ""
+    @State private var pendingJoinCode: IdentifiableShareCode?
 
     var body: some View {
         Group {
@@ -50,10 +51,17 @@ struct PollsListView: View {
             TextField("Enter code", text: $joinCode)
                 .textInputAutocapitalization(.characters)
             Button("Join") {
-                // Navigation will be handled by deep link
-                if !joinCode.isEmpty {
-                    // TODO: Navigate to poll detail
+                let normalizedCode = joinCode
+                    .trimmingCharacters(in: .whitespacesAndNewlines)
+                    .uppercased()
+
+                guard normalizedCode.count == 6 else {
+                    errorMessage = "Share code must be exactly 6 characters."
+                    return
                 }
+
+                pendingJoinCode = IdentifiableShareCode(id: normalizedCode)
+                joinCode = ""
             }
             Button("Cancel", role: .cancel) {
                 joinCode = ""
@@ -61,14 +69,21 @@ struct PollsListView: View {
         } message: {
             Text("Enter the 6-character poll code")
         }
-        .alert("Error", isPresented: .constant(error != nil)) {
-            Button("OK") {
-                error = nil
+        .navigationDestination(item: $pendingJoinCode) { code in
+            PollDetailView(shareCode: code.value)
+        }
+        .alert(
+            "Error",
+            isPresented: Binding(
+                get: { errorMessage != nil },
+                set: { if !$0 { errorMessage = nil } }
+            )
+        ) {
+            Button("OK", role: .cancel) {
+                errorMessage = nil
             }
         } message: {
-            if let error {
-                Text(error.localizedDescription)
-            }
+            Text(errorMessage ?? "Please try again.")
         }
     }
 
@@ -99,14 +114,14 @@ struct PollsListView: View {
 
     private func loadPolls() async {
         isLoading = true
-        error = nil
+        errorMessage = nil
 
         do {
             polls = try await PollService.shared.fetchMyPolls()
         } catch let pollError as PollError {
-            error = pollError
+            errorMessage = pollError.localizedDescription
         } catch {
-            self.error = .unknown(error)
+            self.errorMessage = PollError.unknown(error).localizedDescription
         }
 
         isLoading = false