Unified endpoint config type: one Host/IP : Port control in admin

New configSchema type 'endpoint' declared in the module spec: anything
that points at a device or service on the network must be one endpoint
field, rendered identically for every module in /admin as a joined
Host/IP : Port control and stored/handed to the module server as
{ host, port }. Migrates all three connection modules — ProdCom (was a
full URL field), ProPresenter and Timers (were separate host + port
fields). Legacy stored configs (prodcomUrl / flat host+port) keep
working until the admin form is re-saved, at which point the new shape
replaces them. MODULE-GUIDE documents the type and the presentation
rule: no split host/port fields, and full URLs only for genuine web
addresses.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01RNYUv9EyrGSFmCnmH7WYKH

modules/propresenter-timers/server.js

@@ -65,8 +65,12 @@ function clearedState(enabled) {
 module.exports = {
   init({ config, log }) {
     const streams = new Set();
-    const host = String(config.host || '');
-    const port = Number(config.port) || 1025;
+    // Endpoint config. Legacy flat host/port keys (saved before the endpoint
+    // field existed) can only still be present until the admin form is
+    // re-saved, so when they exist they win over the endpoint's default.
+    const ep = config.propresenter && typeof config.propresenter === 'object' ? config.propresenter : {};
+    const host = String(config.host ?? ep.host ?? '');
+    const port = Number(config.port ?? ep.port) || 1025;
     const password = String(config.password || '');
     const enabled = Boolean(host && port);