Update Featured Checklist and Product Guidelines

[hughescoin]

What changed? Why?

• Converted featured recommendations to use <Steps> component
• Optimized image sizing in product guidelines
• Added link to Bolero Music example onboarding flow
• Renamed overview page to "Featured Checklist"

Notes to reviewers

How has it been tested?

[cb-heimdall]

✅ Heimdall Review Status

Requirement	Status	More Info
Reviews	✅ 1/1	Denominator calculation Show calculation 1 if user is bot 0 1 if user is external 0 2 if repo is sensitive 0 From .codeflow.yml 1 Additional review requirements Show calculation Max 0 0 From CODEOWNERS 0 Global minimum 0 Max 1 1 1 if commit is unverified 0 Sum 1