Add motion-design skills from iart-ai/motion-design-skills

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_013TAaJBzbmePTECuv62BXYX

.agents/skills/after-effects/scripts/batch-rename.jsx

@@ -0,0 +1,41 @@
+/*
+ * batch-rename.jsx
+ * Renames the selected layers in the active comp to:  baseName_##
+ * with a zero-padded, incrementing index.
+ *
+ * Usage: select layers in a comp, then File > Scripts > Run Script File...
+ * Edit BASE_NAME, START_INDEX, and PAD below.
+ */
+
+(function batchRename() {
+    var BASE_NAME   = "layer";   // base name applied to every selected layer
+    var START_INDEX = 1;          // first number
+    var PAD         = 2;          // zero-padding width (2 -> 01, 02 ...)
+
+    var comp = app.project.activeItem;
+    if (!(comp && comp instanceof CompItem)) {
+        alert("Open a composition and select one or more layers first.");
+        return;
+    }
+
+    var sel = comp.selectedLayers;
+    if (sel.length === 0) {
+        alert("No layers selected.");
+        return;
+    }
+
+    function pad(n, width) {
+        var s = String(n);
+        while (s.length < width) s = "0" + s;
+        return s;
+    }
+
+    app.beginUndoGroup("Batch Rename Layers");
+    try {
+        for (var i = 0; i < sel.length; i++) {
+            sel[i].name = BASE_NAME + "_" + pad(START_INDEX + i, PAD);
+        }
+    } finally {
+        app.endUndoGroup();
+    }
+})();