feat(slugify-url-safe-string): autonomous SDLC [{{pipelineResult.runId}}]

src/lib/slugify.test.ts

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+import { describe, it, expect } from 'vitest';
+import { slugify } from './slugify';
+
+describe('slugify', () => {
+  it('converts basic string with spaces', () => {
+    expect(slugify('Hello World')).toBe('hello-world');
+  });
+
+  it('strips accented characters', () => {
+    expect(slugify('Café über')).toBe('cafe-uber');
+  });
+
+  it('handles multiple spaces', () => {
+    expect(slugify('multiple   spaces here')).toBe('multiple-spaces-here');
+  });
+
+  it('replaces special characters with hyphens', () => {
+    expect(slugify('hello@world! How_are you?')).toBe('hello-world-how-are-you');
+  });
+
+  it('returns already-clean slug unchanged (except lowercased)', () => {
+    expect(slugify('already-clean-slug')).toBe('already-clean-slug');
+  });
+
+  it('returns empty string for empty input', () => {
+    expect(slugify('')).toBe('');
+  });
+
+  it('returns empty string for all special chars', () => {
+    expect(slugify('!@#$%^&*()_+=[]{}|;:",.<>?/\\')).toBe('');
+  });
+
+  it('handles numbers mixed with text', () => {
+    expect(slugify('Product 123 name!')).toBe('product-123-name');
+  });
+});

src/lib/slugify.ts

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+export function slugify(text: string): string {
+  // Normalize to NFD form to split accented letters
+  const normalized = text.normalize('NFD');
+  // Remove diacritics (accents)
+  const withoutAccents = normalized.replace(/\p{Diacritic}+/gu, '');
+  // Replace non-alphanumeric chars (including underscores and spaces) with hyphens
+  const replaced = withoutAccents.replace(/[^a-zA-Z0-9]+/g, '-');
+  // Lowercase
+  const lower = replaced.toLowerCase();
+  // Collapse multiple hyphens
+  const collapsed = lower.replace(/-+/g, '-');
+  // Trim leading/trailing hyphens
+  const trimmed = collapsed.replace(/^-+|-+$/g, '');
+  return trimmed;
+}