Function title_to_slug 

pub fn title_to_slug(title: &str) -> String

Convert a bean title into a URL-safe kebab-case slug for use in filenames.

Algorithm:

1. Trim whitespace
2. Lowercase all characters
3. Replace spaces with hyphens
4. Remove non-alphanumeric characters except hyphens
5. Collapse consecutive hyphens into single hyphen
6. Remove leading/trailing hyphens
7. Truncate to 50 characters
8. Return “unnamed” if empty

Examples

• “My Task” → “my-task”
• “Build API v2.0” → “build-api-v20”
• “Foo Bar” → “foo-bar”
• “Implement bn show to render Markdown” → “implement-bn-show-to-render-markdown”
• “Update Bean parser to read .md + YAML frontmatter” → “update-bean-parser-to-read-md-yaml-frontmatter”
• “My-Task!!!” → “my-task”
• “ Spaces “ → “spaces”
• “” (empty) → “unnamed”
• “a” (single char) → “a”