Strip Graphile internals from SDK search skill, simplify queries, fix GraphQL naming

- Remove all Graphile adapter/plugin internals (SearchAdapter, normalization math, plugin config)
- Simplify example queries: searchScore works without selecting individual score fields
- Fix GraphQL naming: documents not allDocuments (constructivePreset convention)
- TypeScript examples first, GraphQL in collapsible details blocks
- Focus SDK skill on: create fields/indexes -> codegen -> query via TS SDK

Author: pyramation