Add Target FPS slider to WLED target editor dialog

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

server/src/wled_controller/static/index.html

@@ -271,6 +271,18 @@
                         <select id="target-editor-source"></select>
                     </div>
 
+                    <div class="form-group">
+                        <div class="label-row">
+                            <label for="target-editor-fps" data-i18n="targets.fps">Target FPS:</label>
+                            <button type="button" class="hint-toggle" onclick="toggleHint(this)" title="?">?</button>
+                        </div>
+                        <small class="input-hint" style="display:none" data-i18n="targets.fps.hint">Target frames per second for capture and LED updates (10-90)</small>
+                        <div class="slider-row">
+                            <input type="range" id="target-editor-fps" min="10" max="90" value="30" oninput="document.getElementById('target-editor-fps-value').textContent = this.value">
+                            <span id="target-editor-fps-value" class="slider-value">30</span>
+                        </div>
+                    </div>
+
                     <div class="form-group">
                         <div class="label-row">
                             <label for="target-editor-border-width" data-i18n="targets.border_width">Border Width (px):</label>