tools: remove hardcoded fallback paths in memory_remember, task_check

tools/memory_remember

@@ -15,7 +15,7 @@ title    = sys.argv[1]
 tags_csv = sys.argv[2]
 body     = sys.argv[3]
 
-mount = os.environ.get("OLLIE") or os.path.expanduser("~/mnt/ollie")
+mount = os.environ["OLLIE"]
 mem_dir = os.path.join(mount, "m")
 
 if not os.path.isdir(mem_dir):

tools/task_check

@@ -10,7 +10,7 @@ if not sid:
     print("error: OLLIE_SESSION_ID not set", file=sys.stderr)
     sys.exit(1)
 
-ollie = os.environ.get("OLLIE", os.path.expanduser("~/mnt/ollie"))
+ollie = os.environ["OLLIE"]
 plan_path = os.path.join(ollie, "s", sid, "plan")
 
 try: