new gpr

docs/run_config.md

@@ -236,7 +236,6 @@ GPR geometry and processing configuration.
 
 ```json
 "gpr": {
-  "mode": "point",
   "relative_permittivity": 1.0,
   "tx_geometry": [
     {"output_pos": 0, "x_m": 0.905}
@@ -251,7 +250,6 @@ Fields:
 
 | Field | Meaning |
 | --- | --- |
-| `mode` | GPR processing mode. |
 | `relative_permittivity` | Medium relative permittivity used for propagation speed. |
 | `tx_geometry` | Transmitter positions keyed by output switch position. |
 | `rx_geometry` | Receiver positions keyed by input switch position. |
@@ -321,4 +319,3 @@ Compact-M K209 via remote server:
   "driver_mode": "native"
 }
 ```
-