Merge remote-tracking branch 'origin/dev' into mqtt-bridge-implementation-flex

Resolve conflicts: keep MQTT prefs skip/pad and append rx_boosted_gain I/O
per dev layout; add devcontainer node feature from dev.

Made-with: Cursor

.devcontainer/devcontainer.json

@@ -2,6 +2,7 @@
 	"name": "MeshCore",
 	"image": "mcr.microsoft.com/devcontainers/python:3-bookworm",
 	"features": {
+		"ghcr.io/devcontainers/features/node:1": {},
 		"ghcr.io/rocker-org/devcontainer-features/apt-packages:1": {
 			"packages": [
 				"sudo"