feat: add sqlite-vec memory search acceleration

src/agents/memory-search.test.ts

@@ -29,6 +29,12 @@ describe("memory search config", () => {
           memorySearch: {
             provider: "openai",
             model: "text-embedding-3-small",
+            store: {
+              vector: {
+                enabled: false,
+                extensionPath: "/opt/sqlite-vec.dylib",
+              },
+            },
             chunking: { tokens: 500, overlap: 100 },
             query: { maxResults: 4, minScore: 0.2 },
           },
@@ -40,6 +46,11 @@ describe("memory search config", () => {
             memorySearch: {
               chunking: { tokens: 320 },
               query: { maxResults: 8 },
+              store: {
+                vector: {
+                  enabled: true,
+                },
+              },
             },
           },
         ],
@@ -52,6 +63,8 @@ describe("memory search config", () => {
     expect(resolved?.chunking.overlap).toBe(100);
     expect(resolved?.query.maxResults).toBe(8);
     expect(resolved?.query.minScore).toBe(0.2);
+    expect(resolved?.store.vector.enabled).toBe(true);
+    expect(resolved?.store.vector.extensionPath).toBe("/opt/sqlite-vec.dylib");
   });
 
   it("merges remote defaults with agent overrides", () => {

src/agents/memory-search.ts

@@ -23,6 +23,10 @@ export type ResolvedMemorySearchConfig = {
   store: {
     driver: "sqlite";
     path: string;
+    vector: {
+      enabled: boolean;
+      extensionPath?: string;
+    };
   };
   chunking: {
     tokens: number;
@@ -77,9 +81,15 @@ function mergeConfig(
     modelPath: overrides?.local?.modelPath ?? defaults?.local?.modelPath,
     modelCacheDir: overrides?.local?.modelCacheDir ?? defaults?.local?.modelCacheDir,
   };
+  const vector = {
+    enabled: overrides?.store?.vector?.enabled ?? defaults?.store?.vector?.enabled ?? true,
+    extensionPath:
+      overrides?.store?.vector?.extensionPath ?? defaults?.store?.vector?.extensionPath,
+  };
   const store = {
     driver: overrides?.store?.driver ?? defaults?.store?.driver ?? "sqlite",
     path: resolveStorePath(agentId, overrides?.store?.path ?? defaults?.store?.path),
+    vector,
   };
   const chunking = {
     tokens: overrides?.chunking?.tokens ?? defaults?.chunking?.tokens ?? DEFAULT_CHUNK_TOKENS,