feat: RDP flap auto-disconnect and hide break button after reconnect (0.4.10)

Add optional auto logoff of stuck sessions on RDG flap and direct RDP failure. Hide the RDS break button on old flap 302 when the user later reconnects or the workstation session is closed.

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/alembic/versions/025_auto_rdp_flap_disconnect.py

@@ -0,0 +1,26 @@
+"""auto RDP flap disconnect setting in ui_settings
+
+Revision ID: 025_auto_rdp_flap_disconnect
+Revises: 024_login_security
+Create Date: 2026-07-02
+
+"""
+
+from alembic import op
+import sqlalchemy as sa
+
+revision = "025_auto_rdp_flap_disconnect"
+down_revision = "024_login_security"
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    op.add_column(
+        "ui_settings",
+        sa.Column("auto_rdp_flap_disconnect", sa.Boolean(), server_default="false", nullable=False),
+    )
+
+
+def downgrade() -> None:
+    op.drop_column("ui_settings", "auto_rdp_flap_disconnect")