Tasks

1. Add humanizeLabel utility to src/utils.ts

• [x] 1.1 Add function humanizeLabel(name: string): string that splits on -, capitalizes the first letter of each word, and joins with a space
• [x] 1.2 Verify edge cases: empty string returns "", single word capitalizes first letter

2. Apply humanizeLabel in page generators

• [x] 2.1 In generateSpecPage: replace spec.name heading with humanizeLabel(spec.name)
• [x] 2.2 In generateChangeIndexPage: replace change.name heading with humanizeLabel(change.name)
• [x] 2.3 In generateSpecsIndexPage: replace spec.name link text with humanizeLabel(spec.name)
• [x] 2.4 In generateChangesIndexPage: replace change.name link text with humanizeLabel(change.name) (both active and archived sections)

3. Apply humanizeLabel in sidebar builder

• [x] 3.1 In generateOpenSpecSidebar: replace s.name with humanizeLabel(s.name) for spec items
• [x] 3.2 In generateOpenSpecSidebar: replace c.name with humanizeLabel(c.name) for change group text (active and archived)

4. Update tests

• [x] 4.1 Add unit tests for humanizeLabel in src/__tests__/utils.test.ts covering: multi-word, single-word, empty string
• [x] 4.2 Update any existing test assertions that compare against raw kebab-case headings or sidebar text to use the humanized form