Initial commit: Developer Tools MVP with visual editor

- Complete React app with 7 developer tools
- JSON Tool with visual structured editor
- Serialize Tool with visual structured editor
- URL, Base64, CSV/JSON, Beautifier, Diff tools
- Responsive navigation with dropdown menu
- Dark/light mode toggle
- Mobile-responsive design with sticky header
- All tools working with copy/paste functionality

node_modules/lilconfig/dist/index.d.ts

@@ -0,0 +1,38 @@
+export declare type LilconfigResult = null | {
+    filepath: string;
+    config: any;
+    isEmpty?: boolean;
+};
+interface OptionsBase {
+    stopDir?: string;
+    searchPlaces?: string[];
+    ignoreEmptySearchPlaces?: boolean;
+    packageProp?: string | string[];
+}
+export declare type Transform = TransformSync | ((result: LilconfigResult) => Promise<LilconfigResult>);
+export declare type TransformSync = (result: LilconfigResult) => LilconfigResult;
+declare type LoaderResult = any;
+export declare type LoaderSync = (filepath: string, content: string) => LoaderResult;
+export declare type Loader = LoaderSync | ((filepath: string, content: string) => Promise<LoaderResult>);
+export declare type Loaders = Record<string, Loader>;
+export declare type LoadersSync = Record<string, LoaderSync>;
+export interface Options extends OptionsBase {
+    loaders?: Loaders;
+    transform?: Transform;
+}
+export interface OptionsSync extends OptionsBase {
+    loaders?: LoadersSync;
+    transform?: TransformSync;
+}
+export declare const defaultLoaders: LoadersSync;
+declare type AsyncSearcher = {
+    search(searchFrom?: string): Promise<LilconfigResult>;
+    load(filepath: string): Promise<LilconfigResult>;
+};
+export declare function lilconfig(name: string, options?: Partial<Options>): AsyncSearcher;
+declare type SyncSearcher = {
+    search(searchFrom?: string): LilconfigResult;
+    load(filepath: string): LilconfigResult;
+};
+export declare function lilconfigSync(name: string, options?: OptionsSync): SyncSearcher;
+export {};