Merge origin/main (shell 1.13.0): version fix lands as 1.13.1

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

server.js

@@ -2343,8 +2343,17 @@ function handleRequest(req, res) {
 
   /* — shell API — */
   if (urlPath === '/api/modules' && req.method === 'GET') {
+    // Beside what dashboards may load: the installed modules that are not
+    // running, by id and name only, so a tile one of them left in a layout
+    // can say why it is not drawn ("module disabled") instead of guessing at
+    // "not installed". Nothing of their config travels with it.
+    const inactive = [...manifests.keys()].filter((id) => !isActive(id)).map((id) => ({
+      id,
+      name: String(manifests.get(id).name || id),
+      reason: isEnabled(id) ? 'incompatible' : 'disabled',
+    }));
     Promise.all([...manifests.keys()].filter(isActive).map(clientManifest))
-      .then((list) => sendJson(res, 200, { modules: list }))
+      .then((list) => sendJson(res, 200, { modules: list, inactive }))
       .catch((err) => {
         console.error('[proddash] /api/modules failed:', err);
         if (!res.headersSent) sendJson(res, 500, { error: 'Server error.' });