fix unwanted generation of additional _dotenv_ variables

scripts/generate-http-docs.js

@@ -92,6 +92,15 @@ function sanitizeVarName(value) {
         .replace(/^([0-9])/, '_$1') || 'value';
 }
 
+function parsePlaceholderContent(content) {
+    const trimmed = String(content).trim();
+    const dotenvMatch = trimmed.match(/^\$dotenv\s+(.+)$/i);
+    if (dotenvMatch) {
+        return { name: dotenvMatch[1].trim(), isDotenv: true };
+    }
+    return { name: trimmed, isDotenv: false };
+}
+
 function collectPlaceholders(value) {
     if (typeof value !== 'string') {
         return [];
@@ -100,7 +109,7 @@ function collectPlaceholders(value) {
     const regex = /\{\{([^{}]+)\}\}/g;
     let match;
     while ((match = regex.exec(value)) !== null) {
-        placeholders.push(match[1]);
+        placeholders.push(parsePlaceholderContent(match[1]).name);
     }
     return placeholders;
 }
@@ -342,10 +351,13 @@ function buildRequestContent(request, requestName, requestConfig = {}, dotenvVar
         if (typeof value !== 'string') {
             return value;
         }
-        return value.replace(/\{\{([^{}]+)\}\}/g, (match, name) => {
+        return value.replace(/\{\{([^{}]+)\}\}/g, (match, inner) => {
-            const normalized = String(name).trim();
+            const placeholder = parsePlaceholderContent(inner);
-            if (normalized && dotenvVariables.has(normalized)) {
+            if (placeholder.isDotenv) {
-                return `{{$dotenv ${normalized}}}`;
+                return match;
+            }
+            if (placeholder.name && dotenvVariables.has(placeholder.name)) {
+                return `{{$dotenv ${placeholder.name}}}`;
             }
             return match;
         });