Add API support for component props

[wise-king-sullyman]

Problem Statement

Component props documentation is currently generated via npm run build:props and accessible through a standalone /props?components=... endpoint. However, this doesn't integrate with the hierarchical API structure used for content navigation (/api/[version]/[section]/[page]).

Goal

Integrate component props data into the versioned, hierarchical API structure to enable consumers to fetch props alongside or separately from component documentation content.

Proposed Solution

Add a props endpoint that aligns with the existing API hierarchy:

GET /api/v6/components/alert/props → Returns props for the Alert component

Completion Criteria

• API Route Created

  • Create /api/[version]/[section]/[page]/props.ts route
  • Route returns JSON array of props objects from props.json
  • Lookup is case-insensitive (e.g., alert, Alert, ALERT all work)

• Error Handling

  • Return 404 when props don't exist for the requested component
  • Return appropriate error messages for invalid paths
  • Handle cases where props.json hasn't been generated

• Documentation

  • Update README.mdx with new props API endpoint
  • Update the api index route
  • Update OpenAPI spec in /api/openapi.json.ts if applicable

• Testing

  • Test valid requests
  • Test error cases (missing props, invalid paths)
  • Verify integration with existing build:props workflow

• Backwards Compatibility

  • Existing /props?components=... endpoint continues to work
  • No breaking changes to props.json structure
  • Works whether props.json exists or not (graceful degradation)

Out of Scope

• Changes to the build:props command or props generation logic
• Automatic props generation during build (optional enhancement for later)