refactor(auth): replace dashboard sessions with stateless tokens and session control (#6329)

* refactor(auth): replace dashboard sessions with stateless tokens

* feat(auth): harden session issuance and distributed enforcement

* fix(proxy): preserve trusted proxy compatibility defaults

* refactor: address dashboard auth review feedback

* refactor: remove classic frontend and flatten web app

web/src/components/ai-elements/connection.tsx

@@ -0,0 +1,46 @@
+/*
+Copyright (C) 2023-2026 QuantumNous
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU Affero General Public License as
+published by the Free Software Foundation, either version 3 of the
+License, or (at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU Affero General Public License for more details.
+
+You should have received a copy of the GNU Affero General Public License
+along with this program. If not, see <https://www.gnu.org/licenses/>.
+
+For commercial licensing, please contact support@quantumnous.com
+*/
+import type { ConnectionLineComponent } from '@xyflow/react'
+
+const HALF = 0.5
+
+export const Connection: ConnectionLineComponent = ({
+  fromX,
+  fromY,
+  toX,
+  toY,
+}) => (
+  <g>
+    <path
+      className='animated'
+      d={`M${fromX},${fromY} C ${fromX + (toX - fromX) * HALF},${fromY} ${fromX + (toX - fromX) * HALF},${toY} ${toX},${toY}`}
+      fill='none'
+      stroke='var(--color-ring)'
+      strokeWidth={1}
+    />
+    <circle
+      cx={toX}
+      cy={toY}
+      fill='#fff'
+      r={3}
+      stroke='var(--color-ring)'
+      strokeWidth={1}
+    />
+  </g>
+)