docs: fill examples page — currently all TBD stubs

[rickcedwhat-ai]

Problem

docs/examples/index.md has 5 TBD markers and zero real content:

• MUI DataGrid example — TBD
• AG Grid example — TBD
• Standard HTML table — TBD
• Infinite scroll — TBD
• Outline section — TBD

This is a user-facing documentation page linked from the docs site navigation.

Note

Partially overlaps with #133 (AG Grid / TanStack Table example). Could be addressed together.

Found in GBU report 2026-07-29.