Add logging thread safety and improve stats output

tasks/logStats.ts

···
+import { claimTaskThread, releaseTaskThread } from "../util/session.ts";
+import { msRandomOffset } from "../util/time.ts";
+import { session } from "../util/session.ts";
+
 export const logStats = () => {
   if (!claimTaskThread()) {
     const newDelay = msRandomOffset(5, 10);
···
         (newDelay / 1000) / 60
       } minutes…`,
     );
-    // session is busy, try to check notifications in 5~10 minutes.
-    setTimeout(logCounts, newDelay);
+    // session is busy, logging stats in 5~10 minutes.
+    setTimeout(logStats, newDelay);
     releaseTaskThread();
     return;
   }
···
   console.log(
     "stats so far: ",
     `
+
+======================================
+
 # Session stats since last reflection:
 
 - likes: ${session.likeCount}
···
 ${session.agentName} has reflected ${session.reflectionCount} time${
       session.reflectionCount > 0 ? "s" : ""
     } since last server start.
+
+======================================
+
+
 `,
   );
-  setTimeout(logCounts, msRandomOffset(5, 15));
+  setTimeout(logStats, msRandomOffset(5, 15));
   releaseTaskThread();
 };