Add bench UART ports and cold-start reset to goTool autotest.

Bench configs define command and console serial paths; scenarios can
reset nodes via esptool before tests. Smoke resets all nodes then waits
for ESP-NOW join.

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

goTool/testdata/README.md

@@ -2,29 +2,35 @@
 
 ## Bench config (`configs/*.json`)
 
-Describes your hardware bench (for documentation and slave lookup in tests).
+Describes your hardware bench: network, MACs, and serial ports.
 
 | Field | Meaning |
 |-------|---------|
 | `id` | Config name; referenced by scenarios |
-| `network` | ESP-NOW network **1–8** (must match DIP/IO expander on all nodes) |
-| `master_mac` | Expected WiFi MAC of the master ESP (reference) |
-| `slaves[].id` | Short name used in scenario `input.slave` / `expect.slave` |
-| `slaves[].mac` | Full slave STA MAC (must match `gotool clients`) |
+| `network` | ESP-NOW network **1–8** (DIP / IO expander on all nodes) |
+| `master_mac` | Master WiFi STA MAC (reference) |
+| `uart.baud` | Command UART baud (default **921600**) |
+| `uart.master` | **gotool** port — external UART adapter on master GPIO2/3 (e.g. `/dev/ttyUSB0`) |
+| `uart.master_console` | Master USB-JTAG/console for **reset** via esptool (e.g. `/dev/ttyACM0`) |
+| `slaves[].id` | Short name for scenarios (`input.slave`, `expect.slave`) |
+| `slaves[].mac` | Slave STA MAC (must match `gotool clients`) |
 | `slaves[].client_id` | Optional; default = last MAC byte |
+| `slaves[].console` | Slave USB console for **reset** (optional, e.g. `/dev/ttyACM1`) |
 
-Copy `example-lab.json` to e.g. `my-lab.json` and set real MACs.
+Copy `example-lab.json` → `my-lab.json` and set real paths (`ls /dev/ttyUSB* /dev/ttyACM*`).
+
+`gotool test` uses `uart.master` when `-port` is omitted. Override with `-port /dev/…`.
 
 ## Scenario (`scenarios/*.json`)
 
-Ordered steps: UART commands with `input` and `expect`.
+Ordered steps: UART commands, delays, or esptool reset.
 
 | Step field | Meaning |
 |------------|---------|
 | `delay_ms` | Sleep only (no command) |
-| `command` | `version`, `clients`, `deadzone`, `unicast_test` |
-| `input` | Command arguments (see below) |
-| `expect` | Assertions on the response |
+| `command` | See below |
+| `input` | Command arguments |
+| `expect` | Assertions (UART commands only) |
 
 ### Commands
 
@@ -38,10 +44,25 @@ Ordered steps: UART commands with `input` and `expect`.
 **unicast_test** — `input`: `slave` or `client_id`, `seq`  
 `expect`: `success`, `seq`
 
+**reset** — esptool hard-reset via console port from bench config (no `expect`).  
+`input`: `target` (`master`) or `slave` (`pod-1`), or `all: true`; optional `wait_ms` after each reset (default 2000).
+
+Example reset steps:
+
+```json
+{ "name": "reset master", "command": "reset", "input": { "target": "master", "wait_ms": 3000 } },
+{ "name": "reset all", "command": "reset", "input": { "all": true, "wait_ms": 2500 } }
+```
+
+Requires `python -m esptool` or `esptool.py` on PATH (ESP-IDF).
+
+The `smoke` scenario resets every node with a configured `console` port, waits **10 s** for boot and ESP-NOW join, then runs the UART checks.
+
 ### Example
 
 ```bash
 cd goTool
-go run . -port /dev/ttyUSB0 test -config my-lab -scenario smoke
-go run . -port /dev/ttyUSB0 test -list-configs
+go run . test -config example-lab -scenario smoke
+go run . test -config my-lab -scenario smoke -port /dev/ttyUSB1
+go run . test -list-configs
 ```

goTool/testdata/configs/example-lab.json

@@ -1,13 +1,19 @@
 {
   "id": "example-lab",
-  "description": "Example bench — replace MACs and network with your hardware",
+  "description": "Example bench — replace MACs, network, and serial paths",
   "network": 1,
   "master_mac": "50:78:7d:18:00:10",
+  "uart": {
+    "baud": 921600,
+    "master": "/dev/ttyUSB0",
+    "master_console": "/dev/ttyACM0"
+  },
   "slaves": [
     {
       "id": "pod-1",
       "mac": "50:78:7d:18:01:10",
-      "client_id": 16
+      "client_id": 16,
+      "console": "/dev/ttyACM1"
     }
   ]
 }

goTool/testdata/scenarios/smoke.json

@@ -1,21 +1,29 @@
 {
   "id": "smoke",
-  "description": "Basic master UART checks (no slaves required for version)",
+  "description": "Cold-start smoke: reset all nodes, wait for join, then UART checks",
   "config": "example-lab",
   "steps": [
     {
-      "name": "firmware version",
+      "name": "reset all nodes",
+      "command": "reset",
+      "input": {
+        "all": true,
+        "wait_ms": 2500
+      }
+    },
+    {
+      "name": "boot and ESP-NOW join",
+      "delay_ms": 10000
+    },
+    {
+      "name": "master UART up",
       "command": "version",
       "expect": {
         "version_min": 1
       }
     },
     {
-      "name": "wait for ESP-NOW join",
-      "delay_ms": 5000
-    },
-    {
-      "name": "slave visible",
+      "name": "slave registered",
       "command": "clients",
       "expect": {
         "min_clients": 1,