feat(core): add large memory regression test

memory-tests/baselines.json

@@ -1,30 +1,55 @@
 {
   "version": 1,
-  "updatedAt": "2026-04-08T01:21:58.770Z",
+  "updatedAt": "2026-04-10T15:36:04.547Z",
   "scenarios": {
     "multi-turn-conversation": {
       "heapUsedBytes": 120082704,
       "heapTotalBytes": 177586176,
       "rssBytes": 269172736,
-      "timestamp": "2026-04-08T01:21:57.127Z"
+      "externalBytes": 4304053,
+      "timestamp": "2026-04-10T15:35:17.603Z"
     },
     "multi-function-call-repo-search": {
       "heapUsedBytes": 104644984,
       "heapTotalBytes": 111575040,
       "rssBytes": 204079104,
-      "timestamp": "2026-04-08T01:21:58.770Z"
+      "externalBytes": 4304053,
+      "timestamp": "2026-04-10T15:35:22.480Z"
     },
     "idle-session-startup": {
       "heapUsedBytes": 119813672,
       "heapTotalBytes": 177061888,
       "rssBytes": 267943936,
-      "timestamp": "2026-04-08T01:21:53.855Z"
+      "externalBytes": 4304053,
+      "timestamp": "2026-04-10T15:35:08.035Z"
     },
     "simple-prompt-response": {
       "heapUsedBytes": 119722064,
       "heapTotalBytes": 177324032,
       "rssBytes": 268812288,
-      "timestamp": "2026-04-08T01:21:55.491Z"
+      "externalBytes": 4304053,
+      "timestamp": "2026-04-10T15:35:12.770Z"
+    },
+    "resume-large-chat-with-messages": {
+      "heapUsedBytes": 106545568,
+      "heapTotalBytes": 111509504,
+      "rssBytes": 202596352,
+      "externalBytes": 4306101,
+      "timestamp": "2026-04-10T15:36:04.547Z"
+    },
+    "resume-large-chat": {
+      "heapUsedBytes": 106513760,
+      "heapTotalBytes": 111509504,
+      "rssBytes": 202596352,
+      "externalBytes": 4306101,
+      "timestamp": "2026-04-10T15:35:59.528Z"
+    },
+    "large-chat": {
+      "heapUsedBytes": 106471568,
+      "heapTotalBytes": 111509504,
+      "rssBytes": 202596352,
+      "externalBytes": 4306101,
+      "timestamp": "2026-04-10T15:35:53.180Z"
     }
   }
 }