feat: add reusable creator UI primitives

[HasToBeJames]

Description

Add a shared set of creator-facing UI primitives so small metrics, subtitles, list row dividers, and profile fact grids render consistently across the marketplace experience.

Closes #46
Closes #47
Closes #52
Closes #53

Changes proposed

What were you told to do?

Implement reusable UI patterns for creator surfaces by adding a mini stat chip, a compact section subtitle, a reusable list row divider treatment, and a responsive creator profile info grid that fit the existing app styling.

What did I do?

Shared creator UI primitives

• added MiniStatChip for compact label/value metrics in tight spaces
• added CompactSectionSubtitle and updated SectionHeading to use the shared subtitle pattern
• added CreatorListRowDivider for subtle reusable row separation in list-style layouts
• added CreatorProfileInfoGrid for repeated creator facts in a responsive card grid

Marketplace integration

• updated CreatorCard to render mini metric chips and the shared row divider without affecting the existing grid layout
• added a creator spotlight section on the landing page to exercise the subtitle and responsive info grid components in a profile-style layout
• kept the styling aligned with the existing amber-accented marketplace look and feel

Check List (Check all the applicable boxes)

• My code follows the code style of this project.
• This PR does not contain plagiarized content.
• The title and description of the PR is clear and explains the approach.
• I am making a pull request against the main branch (left side).
• My commit messages styles matches our requested structure.
• My code additions will fail neither code linting checks nor unit test.
• I am only making changes to files I was requested to.

Screenshots / Testing Evidence

Validated with pnpm lint and pnpm build. The landing page now shows shared creator metric chips and a profile-style spotlight section using the new subtitle and responsive info grid components.

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