chore: reorganize submodules from vendor to samples/projects and update references

scripts/ci/common/download-meshtastic-ota.sh

@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 # Download BLE/unified OTA companion image into PlatformIO BUILD_DIR when Meshtastic *.mt.json is present.
-# No-op for non-Meshtastic builds (no mt.json). Mirrors vendor/meshtastic-firmware/.github/workflows/build_firmware.yml.
+# No-op for non-Meshtastic builds (no mt.json). Mirrors samples/projects/meshtastic-firmware/.github/workflows/build_firmware.yml.
 set -euo pipefail
 
 BUILD_DIR="${1:?usage: download-meshtastic-ota.sh BUILD_DIR}"

scripts/ci/test/fw-pio-smoke-envs.json

@@ -2,22 +2,22 @@
   "description": "PlatformIO environment names for Heltec WiFi LoRa 32 V3 and RAK WisBlock 4631, per vendored tree. Names taken from PIO UnknownEnvNamesError listings (pio run -e __invalid__).",
   "projects": [
     {
-      "path": "vendor/microReticulum-Firmware",
+      "path": "samples/projects/microReticulum-Firmware",
       "heltec_v3": "heltec_wifi_lora_32_V3",
       "rak_4631": "wiscore_rak4631"
     },
     {
-      "path": "vendor/meshtastic-firmware",
+      "path": "samples/projects/meshtastic-firmware",
       "heltec_v3": "heltec-v3",
       "rak_4631": "rak4631"
     },
     {
-      "path": "vendor/meshtastic-baymesh",
+      "path": "samples/projects/meshtastic-baymesh",
       "heltec_v3": "heltec-v3",
       "rak_4631": "rak4631"
     },
     {
-      "path": "vendor/meshcore-firmware",
+      "path": "samples/projects/meshcore-firmware",
       "heltec_v3": "Heltec_v3_companion_radio_ble",
       "rak_4631": "RAK_4631_companion_radio_ble"
     }