fix: enforce preset profile engine compatibility

app/src/lib/api/client.ts

@@ -102,12 +102,6 @@ class ApiClient {
     return this.request<{ engine: string; voices: PresetVoice[] }>(`/profiles/presets/${engine}`);
   }
 
-  async seedPresetProfiles(
-    engine: string,
-  ): Promise<{ engine: string; created: number; total_available: number }> {
-    return this.request(`/profiles/presets/${engine}/seed`, { method: 'POST' });
-  }
-
   async updateProfile(profileId: string, data: VoiceProfileCreate): Promise<VoiceProfileResponse> {
     return this.request<VoiceProfileResponse>(`/profiles/${profileId}`, {
       method: 'PUT',