update site generation flow

frontend/src/app/core/models/llm.ts

@@ -73,6 +73,40 @@ export interface GenerationVersion {
   createdAt: string;
 }
 
+export interface PatternSuggestion {
+  title: string;
+  description: string;
+}
+
+export interface SectionSuggestion {
+  title: string;
+  description: string;
+  slug: string;
+  patterns: PatternSuggestion[];
+}
+
+export interface SuggestSectionsRequest {
+  briefDescription: string;
+  provider: string;
+  apiKey?: string;
+  baseUrl?: string;
+  model?: string;
+}
+
+export interface SuggestSectionsResponse {
+  sections: SectionSuggestion[];
+}
+
+export interface SelectedSection {
+  title: string;
+  description: string;
+  slug: string;
+  selected: boolean;
+  customNotes: string;
+  selectedPattern: string | null;
+  customPatternDesc: string;
+}
+
 export interface LLMKeyEntry {
   configured: boolean;
   baseUrl?: string;