fix(ios): Fix iOS session creation and file browser issues

- Fix working directory validation to fall back to home directory when iOS sends invalid paths
- Fix file browser API client to handle correct response format (absolutePath + files)
- Improve session creation header design with translucent material and fixed height
- Add authentication support placeholder for future API protection
- Add better error logging for debugging API issues
- Move TerminalTextFieldStyle to SessionCreateView for better organization

The iOS app can now create sessions successfully and browse directories without errors.

ios/VibeTunnel.xcodeproj/project.pbxproj

@@ -97,7 +97,7 @@
 			attributes = {
 				BuildIndependentTargetsInParallel = YES;
 				LastSwiftUpdateCheck = 1600;
-				LastUpgradeCheck = 1600;
+				LastUpgradeCheck = 2600;
 				TargetAttributes = {
 					788687F02DFF4FCB00B22C15 = {
 						CreatedOnToolsVersion = 16.0;
@@ -205,6 +205,7 @@
 				MTL_FAST_MATH = YES;
 				ONLY_ACTIVE_ARCH = YES;
 				SDKROOT = iphoneos;
+				STRING_CATALOG_GENERATE_SYMBOLS = YES;
 				SWIFT_ACTIVE_COMPILATION_CONDITIONS = "DEBUG $(inherited)";
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
 			};
@@ -329,6 +330,7 @@
 				MTL_ENABLE_DEBUG_INFO = NO;
 				MTL_FAST_MATH = YES;
 				SDKROOT = iphoneos;
+				STRING_CATALOG_GENERATE_SYMBOLS = YES;
 				SWIFT_COMPILATION_MODE = wholemodule;
 				VALIDATE_PRODUCT = YES;
 			};

ios/VibeTunnel/Services/APIClient.swift

@@ -283,9 +283,15 @@ class APIClient: APIClientProtocol {
         }
     }
     
+    private func addAuthenticationIfNeeded(_ request: inout URLRequest) {
+        // For now, we don't have authentication configured in the iOS app
+        // This is a placeholder for future authentication support
+        // The server might be running without password protection
+    }
+    
     // MARK: - File System Operations
     
-    func browseDirectory(path: String) async throws -> [FileEntry] {
+    func browseDirectory(path: String) async throws -> (absolutePath: String, files: [FileEntry]) {
         guard let baseURL = baseURL else {
             throw APIError.noServerConfigured
         }
@@ -300,11 +306,31 @@ class APIClient: APIClientProtocol {
         var request = URLRequest(url: url)
         request.httpMethod = "GET"
         
+        // Add authentication header if needed
+        addAuthenticationIfNeeded(&request)
+        
         let (data, response) = try await session.data(for: request)
+        
+        // Log response for debugging
+        if let httpResponse = response as? HTTPURLResponse {
+            print("[APIClient] Browse directory response: \(httpResponse.statusCode)")
+            if httpResponse.statusCode >= 400 {
+                if let errorString = String(data: data, encoding: .utf8) {
+                    print("[APIClient] Error response body: \(errorString)")
+                }
+            }
+        }
+        
         try validateResponse(response)
         
-        let entries = try decoder.decode([FileEntry].self, from: data)
+        // Decode the response which includes absolutePath and files
-        return entries
+        struct BrowseResponse: Codable {
+            let absolutePath: String
+            let files: [FileEntry]
+        }
+        
+        let browseResponse = try decoder.decode(BrowseResponse.self, from: data)
+        return (absolutePath: browseResponse.absolutePath, files: browseResponse.files)
     }
     
     func createDirectory(path: String) async throws {

ios/VibeTunnel/Views/Connection/ServerConfigForm.swift

@@ -182,21 +182,3 @@ struct ServerConfigForm: View {
         }
     }
 }
-
-// Custom text field style
-struct TerminalTextFieldStyle: TextFieldStyle {
-    func _body(configuration: TextField<Self._Label>) -> some View {
-        configuration
-            .font(Theme.Typography.terminalSystem(size: 16))
-            .foregroundColor(Theme.Colors.terminalForeground)
-            .padding(Theme.Spacing.md)
-            .background(
-                RoundedRectangle(cornerRadius: Theme.CornerRadius.medium)
-                    .fill(Theme.Colors.cardBackground)
-            )
-            .overlay(
-                RoundedRectangle(cornerRadius: Theme.CornerRadius.medium)
-                    .stroke(Theme.Colors.primaryAccent.opacity(0.3), lineWidth: 1)
-            )
-    }
-}

ios/VibeTunnel/Views/FileBrowserView.swift

@@ -297,12 +297,11 @@ class FileBrowserViewModel: ObservableObject {
         defer { isLoading = false }
         
         do {
-            let fetchedEntries = try await apiClient.browseDirectory(path: path)
+            let result = try await apiClient.browseDirectory(path: path)
-            // For now, we'll use the requested path as the current path
+            // Use the absolute path returned by the server
-            // The Go server doesn't return the absolute path in the response
+            currentPath = result.absolutePath
-            currentPath = path
             withAnimation(.easeInOut(duration: 0.2)) {
-                entries = fetchedEntries
+                entries = result.files
             }
         } catch {
             print("[FileBrowser] Failed to load directory: \(error)")

ios/VibeTunnel/Views/Sessions/SessionCreateView.swift

@@ -1,5 +1,23 @@
 import SwiftUI
 
+// Custom text field style for terminal-like appearance
+struct TerminalTextFieldStyle: TextFieldStyle {
+    func _body(configuration: TextField<Self._Label>) -> some View {
+        configuration
+            .font(Theme.Typography.terminalSystem(size: 16))
+            .foregroundColor(Theme.Colors.terminalForeground)
+            .padding()
+            .background(
+                RoundedRectangle(cornerRadius: Theme.CornerRadius.small)
+                    .fill(Theme.Colors.cardBackground)
+            )
+            .overlay(
+                RoundedRectangle(cornerRadius: Theme.CornerRadius.small)
+                    .stroke(Theme.Colors.cardBorder, lineWidth: 1)
+            )
+    }
+}
+
 struct SessionCreateView: View {
     @Binding var isPresented: Bool
     let onCreated: (String) -> Void
@@ -208,14 +226,29 @@ struct SessionCreateView: View {
             .navigationBarHidden(true)
             .safeAreaInset(edge: .top) {
                 // Custom Navigation Bar with proper safe area handling
-                VStack(spacing: 0) {
+                ZStack {
+                    // Background with blur and transparency
+                    Rectangle()
+                        .fill(.ultraThinMaterial)
+                        .background(Theme.Colors.terminalBackground.opacity(0.5))
+                    
+                    // Content
                     HStack {
-                        Button("Cancel") {
+                        Button(action: {
                             HapticFeedback.impact(.light)
                             isPresented = false
-                        }
+                        }) {
+                            Text("Cancel")
                                 .font(.system(size: 17))
                                 .foregroundColor(Theme.Colors.errorAccent)
+                        }
+                        .buttonStyle(PlainButtonStyle())
+                        
+                        Spacer()
+                        
+                        Text("New Session")
+                            .font(.system(size: 17, weight: .semibold))
+                            .foregroundColor(Theme.Colors.terminalForeground)
                         
                         Spacer()
                         
@@ -230,16 +263,23 @@ struct SessionCreateView: View {
                             } else {
                                 Text("Create")
                                     .font(.system(size: 17, weight: .semibold))
+                                    .foregroundColor(command.isEmpty ? Theme.Colors.primaryAccent.opacity(0.5) : Theme.Colors.primaryAccent)
                             }
                         }
-                        .foregroundColor(Theme.Colors.primaryAccent)
+                        .buttonStyle(PlainButtonStyle())
                         .disabled(isCreating || command.isEmpty)
                     }
-                    .padding(.horizontal)
+                    .padding(.horizontal, 20)
                     .padding(.vertical, 16)
-                    .frame(maxWidth: .infinity)
-                    .background(.ultraThinMaterial.opacity(0.8))
                 }
+                .frame(height: 56) // Fixed height for the header
+                .overlay(
+                    // Subtle bottom border
+                    Rectangle()
+                        .fill(Theme.Colors.cardBorder.opacity(0.15))
+                        .frame(height: 0.5),
+                    alignment: .bottom
+                )
             }
             .onAppear {
                 loadDefaults()