Add utility files: spec-parser, file-writer, helpers, wizard

src/utils/helpers.ts

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+export function capitalize(str: string): string {
+  return str.charAt(0).toUpperCase() + str.slice(1);
+}
+
+export function camelCase(str: string): string {
+  return str.replace(/[-_](.)/g, (_, c) => c.toUpperCase());
+}
+
+export function kebabCase(str: string): string {
+  return str.replace(/([a-z])([A-Z])/g, '$1-$2').toLowerCase();
+}
+
+export function snakeCase(str: string): string {
+  return str.replace(/([a-z])([A-Z])/g, '$1_$2').toLowerCase();
+}
+
+export function quoteString(str: string, language: string): string {
+  const quotes: Record<string, { single: string; double: string }> = {
+    python: { single: "'", double: '"' },
+    go: { single: "'", double: '"' },
+    rust: { single: "'", double: '"' },
+    javascript: { single: "'", double: '"' },
+    typescript: { single: "'", double: '"' },
+  };
+
+  const langQuotes = quotes[language] || quotes.javascript;
+
+  if (str.includes(langQuotes.single) && str.includes(langQuotes.double)) {
+    return `${langQuotes.single}${str.replace(new RegExp(langQuotes.single, 'g'), `\\${langQuotes.single}`)}${langQuotes.single}`;
+  }
+
+  if (str.includes(langQuotes.single)) {
+    return `${langQuotes.double}${str}${langQuotes.double}`;
+  }
+
+  return `${langQuotes.single}${str}${langQuotes.single}`;
+}
+
+export function escapeString(str: string, language: string): string {
+  const escapes: Record<string, Record<string, string>> = {
+    python: { '\\': '\\\\', "'": "\\'", '"': '\\"', '\n': '\\n', '\t': '\\t' },
+    go: { '\\': '\\\\', '"': '\\"', '\n': '\\n', '\t': '\\t' },
+    rust: { '\\': '\\\\', '"': '\\"', '\n': '\\n', '\t': '\\t' },
+    javascript: { '\\': '\\\\', "'": "\\'", '"': '\\"', '\n': '\\n', '\t': '\\t', '`': '\\`' },
+    typescript: { '\\': '\\\\', "'": "\\'", '"': '\\"', '\n': '\\n', '\t': '\\t', '`': '\\`' },
+  };
+
+  const langEscapes = escapes[language] || escapes.javascript;
+
+  let result = str;
+  for (const [char, escape] of Object.entries(langEscapes)) {
+    result = result.split(char).join(escape);
+  }
+
+  return result;
+}
+
+export function indent(text: string, spaces: number): string {
+  const indentStr = ' '.repeat(spaces);
+  return text.split('\n').map(line => line ? indentStr + line : line).join('\n');
+}
+
+export function trimEndNewlines(str: string): string {
+  return str.replace(/\n+$/g, '');
+}