fix(readme): document maxLineLength option for base64ts output and add example and tip

readme.md

@@ -91,6 +91,7 @@ tsbundle uses `npmextra.json` for configuration. Here's an example:
 | `bundler` | `"esbuild"` \| `"rolldown"` \| `"rspack"` | `"esbuild"` | Which bundler to use |
 | `production` | `boolean` | `false` | Enable minification |
 | `includeFiles` | `string[]` | `[]` | Glob patterns for additional files (HTML, assets) |
+| `maxLineLength` | `number` | `0` (unlimited) | For `base64ts` mode: max chars per line in output |
 
 ### Output Modes
 
@@ -108,6 +109,8 @@ export const files: { path: string; contentBase64: string }[] = [
 ];
 ```
 
+**Tip:** If you're working with AI tools that have line length limitations, set `maxLineLength` (e.g., `200`) to split long base64 strings across multiple lines.
+
 ## Available Bundlers 🔧
 
 tsbundle supports three modern bundlers:
@@ -241,7 +244,8 @@ Config:
         "outputMode": "base64ts",
         "bundler": "esbuild",
         "production": true,
-        "includeFiles": ["./html/index.html"]
+        "includeFiles": ["./html/index.html"],
+        "maxLineLength": 200
       }
     ]
   }