Replace legacy API documentation approach with modern Scalar-based rendering:
## Architecture Changes
- Add renderer abstraction (`layouts/partials/api/`) supporting Scalar and RapiDoc
- Create `api` layout type for API reference pages (single.html, list.html)
- Configure renderer via `site.Params.apiRenderer` (default: scalar)
## OpenAPI Processing Pipeline (TypeScript)
- `api-docs/scripts/generate-openapi-articles.ts` - Main generation script
- `api-docs/scripts/openapi-paths-to-hugo-data/` - OpenAPI to Hugo data converter
- Generates per-endpoint path fragments for AI agent access
- Creates Hugo content pages with `type: api` frontmatter
## AI Agent Accessibility
- Full specs at `/openapi/influxdb-{product}.yml` and `.json`
- Per-endpoint fragments at `/openapi/influxdb-{product}/paths/`
- `<link rel="alternate">` tags in HTML for machine discovery
## Scalar Features
- Dark/light theme support synchronized with site theme
- InfluxData brand colors
- Responsive layout
- Download link for OpenAPI spec
## Products Supported
- cloud-v2, oss-v2
- influxdb3-core, influxdb3-enterprise
- cloud-dedicated, cloud-serverless, clustered
Usage: node api-docs/scripts/dist/generate-openapi-articles.js [product]
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