fix: rename collectionId to collectionName in searchVec for proper filtering (#61)

src/store.ts

@@ -619,7 +619,7 @@ export type Store = {
 
   // Search
   searchFTS: (query: string, limit?: number, collectionId?: number) => SearchResult[];
-  searchVec: (query: string, model: string, limit?: number, collectionId?: number) => Promise<SearchResult[]>;
+  searchVec: (query: string, model: string, limit?: number, collectionName?: string) => Promise<SearchResult[]>;
 
   // Query expansion & reranking
   expandQuery: (query: string, model?: string) => Promise<string[]>;
@@ -702,7 +702,7 @@ export function createStore(dbPath?: string): Store {
 
     // Search
     searchFTS: (query: string, limit?: number, collectionId?: number) => searchFTS(db, query, limit, collectionId),
-    searchVec: (query: string, model: string, limit?: number, collectionId?: number) => searchVec(db, query, model, limit, collectionId),
+    searchVec: (query: string, model: string, limit?: number, collectionName?: string) => searchVec(db, query, model, limit, collectionName),
 
     // Query expansion & reranking
     expandQuery: (query: string, model?: string) => expandQuery(query, model, db),
@@ -1900,7 +1900,7 @@ export function searchFTS(db: Database, query: string, limit: number = 20, colle
 // Vector Search
 // =============================================================================
 
-export async function searchVec(db: Database, query: string, model: string, limit: number = 20, collectionId?: number): Promise<SearchResult[]> {
+export async function searchVec(db: Database, query: string, model: string, limit: number = 20, collectionName?: string): Promise<SearchResult[]> {
   const tableExists = db.prepare(`SELECT name FROM sqlite_master WHERE type='table' AND name='vectors_vec'`).get();
   if (!tableExists) return [];
 
@@ -1943,9 +1943,9 @@ export async function searchVec(db: Database, query: string, model: string, limi
   `;
   const params: string[] = [...hashSeqs];
 
-  if (collectionId) {
+  if (collectionName) {
     docSql += ` AND d.collection = ?`;
-    params.push(String(collectionId));
+    params.push(collectionName);
   }
 
   const docRows = db.prepare(docSql).all(...params) as {