TrimCode.js: remove extra indentation

Scripts/TrimCode.js

@@ -0,0 +1,31 @@
+/**
+{
+  "api": 1,
+  "name": "Trim Code",
+  "description": "Removes extra indentation but keeps original code structure.",
+  "author": "Josh Angelsberg",
+  "icon": "scissors",
+  "tags": "trim,indent,whitespace,code"
+}
+**/
+
+function main(input) {
+  // split into lines
+  const lines = input.text.split('\n');
+  if (!lines.length) return;
+
+  // trim leading whitespace on the first line
+  const firstLine = lines[0];
+  const trimmedFirst = firstLine.trimStart();
+  const indentCount = firstLine.length - trimmedFirst.length;
+
+  // apply the same slice to every line
+  const result = lines.map((line, idx) =>
+    idx === 0
+      ? trimmedFirst
+      : line.slice(indentCount)
+  );
+
+  // rejoin and update
+  input.text = result.join('\n');
+}