Add active user session tracking from agent user :0 2026-07-16 15:46

user     pts/0        2026-07-16 15:50 (:0)
user     pts/1        2026-07-16 16:46 (:0)
user     pts/2        2026-07-17 09:05 (:0) to server UI

server/database.py

@@ -38,3 +38,11 @@ def run_migrations():
             with engine.connect() as conn:
                 conn.execute(text("ALTER TABLE audit_log ADD COLUMN username TEXT"))
                 conn.commit()
+
+    # Heartbeat: add sessions column if missing
+    if "heartbeats" in insp.get_table_names():
+        hb_cols = {c["name"] for c in insp.get_columns("heartbeats")}
+        if "sessions" not in hb_cols:
+            with engine.connect() as conn:
+                conn.execute(text("ALTER TABLE heartbeats ADD COLUMN sessions TEXT"))
+                conn.commit()