Add semantic cache support using ChromaDB

src/types.ts

@@ -90,12 +90,20 @@ export class PathValidationError extends OllamaError {
 // Plugin Configuration
 // ============================================================
 
+export interface CacheConfig {
+  enabled: boolean;
+  similarityThreshold: number;
+  collectionName: string;
+  embeddingModel: string;
+}
+
 export interface PluginSettings {
   ollamaUrl: string;
   model: string;
   vaultSearchLimit: number;
   maxMessageHistory: number;
   lastIndexTime: number;
+  cacheConfig: CacheConfig;
 }
 
 // ============================================================