Fix SVG markup in select options, add missing name placeholders

Remove SVG icon function calls from <option> textContent — native
select elements render markup as literal text. Capture template options
now show "name (engine_type)", source options show just the name.

Add i18n placeholders to automation and scene editor name inputs.
Rename HAOS Scenes device from "{server_name} Scenes" to "Scenes".

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

server/src/wled_controller/static/js/features/streams.js

@@ -282,7 +282,7 @@ async function loadAvailableEngines() {
         availableEngines.forEach(engine => {
             const option = document.createElement('option');
             option.value = engine.type;
-            option.textContent = `${getEngineIcon(engine.type)} ${engine.name}`;
+            option.textContent = engine.name;
             if (!engine.available) {
                 option.disabled = true;
                 option.textContent += ` (${t('templates.engine.unavailable')})`;
@@ -1563,7 +1563,7 @@ async function populateStreamModalDropdowns() {
             opt.value = tmpl.id;
             opt.dataset.name = tmpl.name;
             opt.dataset.engineType = tmpl.engine_type;
-            opt.textContent = `${getEngineIcon(tmpl.engine_type)} ${tmpl.name}`;
+            opt.textContent = `${tmpl.name} (${tmpl.engine_type})`;
             templateSelect.appendChild(opt);
         });
     }
@@ -1581,7 +1581,7 @@ async function populateStreamModalDropdowns() {
             const opt = document.createElement('option');
             opt.value = s.id;
             opt.dataset.name = s.name;
-            opt.textContent = `${getPictureSourceIcon(s.stream_type)} ${s.name}`;
+            opt.textContent = s.name;
             sourceSelect.appendChild(opt);
         });
     }