feat: remove remaining use of session.toml

programs/include/montauk/user.h

@@ -328,22 +328,7 @@ namespace user {
         return false;
     }
 
-    // ---- Session state and current user helpers ----
-
-    // Persist login session state after successful login.
-    // Current processes should use getuser() for their active username.
-    inline void set_session(const char* username) {
-        montauk::toml::Doc doc;
-        doc.init();
-        config::set_string(&doc, "session.username", username);
-        config::save("session", &doc);
-        doc.destroy();
-    }
-
-    // Clear the session (on logout).
-    inline void clear_session() {
-        montauk::fdelete("0:/config/session.toml");
-    }
+    // ---- Current user helpers ----
 
     // Read the current process username into buf. Returns true if one is set.
     inline bool get_session_username(char* buf, int bufSz) {