adjust default log, pick and config locations. renotify on critical only, make user sessions persistem

hbd/server/config.py

@@ -16,12 +16,10 @@ SERVER_DEFAULTS = {
     "hbd_host": "",             # Bind address (empty = all interfaces)
 
     # Persistence
-    "pickfile": "/tmp/hb.pick",
+    "pickfile": os.path.join(os.path.expanduser("~"), ".hb.pick"),  # File to store host state between restarts
 
     # Logging
-    "logfile": "/var/log/heartbeat.log",
-    "logfmt": "text",           # text or msg or json
-
+    "logfile": os.path.join(os.path.expanduser("~"), ".hb.log"),
     # Notification channels
     "notification_channels": {},  # Named channels with type and credentials
     "default_notification_channels": [],  # Default channels if host doesn't specify