Update project files

src/memory/LongTermMemory.ts

@@ -17,13 +17,16 @@ export class LongTermMemory {
     private store: LongTermStore;
     private filePath: string;
     private dirty = false;
+    /** Hard cap on retained entries — oldest are trimmed when exceeded. Default 100 (matches MemoryConfig.longTermMaxEntries). */
+    private maxEntries: number;
 
-    constructor(brainPath: string) {
+    constructor(brainPath: string, maxEntries = 100) {
         const memoryDir = path.join(brainPath, 'memory');
         if (!fs.existsSync(memoryDir)) {
             fs.mkdirSync(memoryDir, { recursive: true });
         }
         this.filePath = path.join(memoryDir, 'long_term.json');
+        this.maxEntries = maxEntries > 0 ? maxEntries : 100;
         this.store = this.load();
     }
 
@@ -62,6 +65,12 @@ export class LongTermMemory {
             referenceCount: 0
         };
         this.store.entries.push(entry);
+        // Enforce the retention cap — drop the oldest entries (by createdAt) once
+        // over the limit. The store array is append-ordered, so the oldest are at
+        // the front; we trim from there.
+        if (this.store.entries.length > this.maxEntries) {
+            this.store.entries.splice(0, this.store.entries.length - this.maxEntries);
+        }
         this.dirty = true;
         this.save();
         return entry;