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

hbd/server/main.py

@@ -27,6 +27,7 @@ def save_state(config, hbdclass):
     """Save current state to pickle file. Safe to call at any time."""
     import pickle
     import os
+    from . import users as users_mod
 
     # Clear timer references before pickling (they can't be serialized)
     for hostname, host in list(hbdclass.Host.hosts.items()):
@@ -48,6 +49,7 @@ def save_state(config, hbdclass):
             pick = pickle.Pickler(pickf)
             pick.dump(hbdclass.Host.hosts)
             pick.dump(data.msgs)
+            pick.dump(users_mod.save_sessions())
         os.replace(tmpfile, pickfile)
     except Exception as e:
         logger.error("Failed to save state: %s", e)
@@ -432,6 +434,7 @@ def load_pickled_hosts(config, hbdclass):
     import os
     import pickle
     from . import config as config_mod
+    from . import users as users_mod
 
     pickfile = config.get("pickfile", "hbd.pickle")
     dyndnshosts = config_mod.get_dyndnshosts(config)
@@ -445,6 +448,10 @@ def load_pickled_hosts(config, hbdclass):
         try:
             hbdclass.Host.hosts = pick.load()
             data.msgs = pick.load()
+            try:
+                users_mod.load_sessions(pick.load())
+            except Exception:
+                pass  # older pickle without sessions — fine
             pickf.close()
         except Exception as e:
             logger.exception("load pickled failed: %s", e)