v2: generic S-Series module with live discovery, dynamic options and meters

Rewrite of the module around what the console itself reports:

- Settings cut to console address/ports, the iPad relay and debug logging;
  nothing site-specific remains. An upgrade script carries v1 configs and
  remaps v1 actions/feedbacks whose ids were reused.
- On connect the module reads every name, buss type (aux/group), stereo
  mode, fader/mute/solo/pan and the snapshot list; entities that never
  answer are hidden. Definitions rebuild (debounced, skipped when
  identical) when names, buss types or snapshots change.
- Every entity option is a searchable dropdown of live names. 70 actions
  cover inputs, aux sends, group assigns, busses, matrix outputs and sends,
  control groups, graphic EQs, channel-strip switches, trim/gain/filters and
  snapshots, each level with set and encoder-friendly adjust variants.
- Boolean, value and bar feedbacks for every state, input level and
  gain-reduction meters via the console's meter subscription protocol, and
  about 2800 presets including rotary knob presets with live level text.
- A write guard keeps fast encoder turns from being undone by delayed
  echoes; feedbacks are re-checked per instance.
- Relay: the client table survives config changes, idle iPads are kept for
  an hour by default (0 = forever), bind failures retry and show in status.

npm test: 326 checks pass on Node 25 and on Companion's Node 22.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

package.json

@@ -1,7 +1,7 @@
 {
 	"name": "companion-module-digico-s31",
-	"version": "0.1.0",
-	"description": "DiGiCo S21/S31 aux-send control for Bitfocus Companion, with a relay so several DiGiCo iPad apps can share the console's single remote slot",
+	"version": "0.2.0",
+	"description": "DiGiCo S21/S31 control for Bitfocus Companion: discovers the console, dropdowns with live names, rotary presets, feedbacks and input meters, plus a relay so several DiGiCo iPad apps can share the console's single remote slot",
 	"type": "module",
 	"main": "src/main.js",
 	"license": "MIT",