fix(ui): add unsaved changes confirmation when switching profiles

- Add onHasChangesUpdate callback to ProfileEditor

- Track editor dirty state in ApiPage parent

- Show confirmation dialog before discarding unsaved changes

- Handle edge case for 'New' profile button

Closes #163

ui/src/components/profiles/editor/index.tsx

@@ -4,7 +4,7 @@
  */
 
 /* eslint-disable react-refresh/only-export-components */
-import { useState, useMemo, useCallback } from 'react';
+import { useState, useMemo, useCallback, useEffect } from 'react';
 import { useQuery, useMutation, useQueryClient } from '@tanstack/react-query';
 import { Button } from '@/components/ui/button';
 import { ConfirmDialog } from '@/components/shared/confirm-dialog';
@@ -16,7 +16,7 @@ import { FriendlyUISection } from './friendly-ui-section';
 import { RawEditorSection } from './raw-editor-section';
 import type { ProfileEditorProps, Settings, SettingsResponse } from './types';
 
-export function ProfileEditor({ profileName, onDelete }: ProfileEditorProps) {
+export function ProfileEditor({ profileName, onDelete, onHasChangesUpdate }: ProfileEditorProps) {
   const [localEdits, setLocalEdits] = useState<Record<string, string>>({});
   const [conflictDialog, setConflictDialog] = useState(false);
   const [rawJsonEdits, setRawJsonEdits] = useState<string | null>(null);
@@ -100,6 +100,11 @@ export function ProfileEditor({ profileName, onDelete }: ProfileEditorProps) {
     return Object.keys(localEdits).length > 0;
   }, [rawJsonEdits, localEdits, settings]);
 
+  // Notify parent of hasChanges state
+  useEffect(() => {
+    onHasChangesUpdate?.(computedHasChanges);
+  }, [computedHasChanges, onHasChangesUpdate]);
+
   // Save mutation
   const saveMutation = useMutation({
     mutationFn: async () => {

ui/src/components/profiles/editor/types.ts

@@ -16,4 +16,5 @@ export interface SettingsResponse {
 export interface ProfileEditorProps {
   profileName: string;
   onDelete?: () => void;
+  onHasChangesUpdate?: (hasChanges: boolean) => void;
 }

ui/src/pages/api.tsx

@@ -37,6 +37,8 @@ export function ApiPage() {
   const [isCreateDialogOpen, setCreateDialogOpen] = useState(false);
   const [createMode, setCreateMode] = useState<'normal' | 'openrouter'>('normal');
   const [deleteConfirm, setDeleteConfirm] = useState<string | null>(null);
+  const [editorHasChanges, setEditorHasChanges] = useState(false);
+  const [pendingSwitch, setPendingSwitch] = useState<string | null>(null);
 
   // Prefetch OpenRouter models when page loads (lazy - won't block render)
   useOpenRouterModels();
@@ -71,7 +73,21 @@ export function ApiPage() {
   // Handle create success
   const handleCreateSuccess = (name: string) => {
     setCreateDialogOpen(false);
-    setSelectedProfile(name);
+    // Use the same unsaved changes check as profile selection
+    if (editorHasChanges && selectedProfile !== null) {
+      setPendingSwitch(name);
+    } else {
+      setSelectedProfile(name);
+    }
+  };
+
+  // Handle profile selection with unsaved changes check
+  const handleProfileSelect = (name: string) => {
+    if (editorHasChanges && selectedProfile !== name) {
+      setPendingSwitch(name);
+    } else {
+      setSelectedProfile(name);
+    }
   };
 
   return (
@@ -168,9 +184,7 @@ export function ApiPage() {
                     key={profile.name}
                     profile={profile}
                     isSelected={selectedProfile === profile.name}
-                    onSelect={() => {
+                    onSelect={() => handleProfileSelect(profile.name)}
-                      setSelectedProfile(profile.name);
-                    }}
                     onDelete={() => setDeleteConfirm(profile.name)}
                   />
                 ))}
@@ -208,6 +222,7 @@ export function ApiPage() {
             <ProfileEditor
               profileName={selectedProfileData.name}
               onDelete={() => setDeleteConfirm(selectedProfileData.name)}
+              onHasChangesUpdate={setEditorHasChanges}
             />
           ) : (
             <OpenRouterQuickStart
@@ -242,6 +257,20 @@ export function ApiPage() {
         onConfirm={() => deleteConfirm && handleDelete(deleteConfirm)}
         onCancel={() => setDeleteConfirm(null)}
       />
+
+      {/* Unsaved Changes Confirmation */}
+      <ConfirmDialog
+        open={!!pendingSwitch}
+        title="Unsaved Changes"
+        description={`You have unsaved changes in "${selectedProfile}". Discard and switch to "${pendingSwitch}"?`}
+        confirmText="Discard & Switch"
+        variant="destructive"
+        onConfirm={() => {
+          setSelectedProfile(pendingSwitch);
+          setPendingSwitch(null);
+        }}
+        onCancel={() => setPendingSwitch(null)}
+      />
     </div>
   );
 }