refac: lazy load prompts/tools/functions/tags

src/lib/stores/index.ts

@@ -28,11 +28,13 @@ export const pinnedChats = writable([]);
 export const tags = writable([]);
 
 export const models: Writable<Model[]> = writable([]);
-export const prompts: Writable<Prompt[]> = writable([]);
-export const knowledge: Writable<Document[]> = writable([]);
 
-export const tools = writable([]);
-export const functions = writable([]);
+
+export const prompts: Writable<null | Prompt[]> = writable(null);
+export const knowledge: Writable<null | Document[]> = writable(null);
+export const tools = writable(null);
+export const functions = writable(null);
+
 
 export const banners: Writable<Banner[]> = writable([]);