Add WebRTC support and remove deviceId from apis

server/docs/swagger.yaml

@@ -691,6 +691,25 @@ definitions:
         example: 0.1.0-poc
         type: string
     type: object
+  transport.WebRTCConnectRequest:
+    properties:
+      driver_id:
+        example: driver-alice
+        type: string
+      sdp:
+        type: string
+      type:
+        example: offer
+        type: string
+    type: object
+  transport.WebRTCConnectResponse:
+    properties:
+      sdp:
+        type: string
+      type:
+        example: answer
+        type: string
+    type: object
 host: localhost:8080
 info:
   contact:
@@ -1973,6 +1992,29 @@ paths:
       summary: Get MJPEG video stream from ESP32
       tags:
       - video
+  /api/webrtc/connect:
+    post:
+      consumes:
+      - application/json
+      description: Accepts SDP Offer, negotiates peer connection, and returns SDP
+        Answer. Routes video and control data via DataChannels.
+      parameters:
+      - description: SDP Offer details
+        in: body
+        name: body
+        required: true
+        schema:
+          $ref: '#/definitions/transport.WebRTCConnectRequest'
+      produces:
+      - application/json
+      responses:
+        "200":
+          description: SDP Answer negotiation success
+          schema:
+            $ref: '#/definitions/transport.WebRTCConnectResponse'
+      summary: Establish WebRTC connection for driver-car 1-to-1 proxying
+      tags:
+      - webrtc
   /health:
     get:
       description: Returns 200 OK with current engine phase, WS connection count and