# Table Composition Complex Child Table

Level: organism. Inventory status: `pattern-only`.

## Purpose and Anatomy

Show a parent summary row with an expandable child table when the child records
have a different column model. Compose the summary from standard Table Cells
with a published Chevron; expanded content follows immediately beneath it and
contains an optional title and an independently headed table.

## Behavior and Accessibility

The screen owns group identity, child records, counts, initial expansion and
loading policy. Chevron appearance must match the visible expanded region.
A static Figma state does not establish keyboard interaction, navigation or
production loading. Any implemented expansion needs a named control and an
exposed expanded state; no implementation is claimed here.

## Runtime Boundary

This entry has no standalone Angular API, local code, focused test, export or
Storybook story. Do not infer runtime behavior from the Figma composition.

## Figma Evidence and Assembly

Read-only Plugin API inspection and screenshot on 2026-09-22 verified
[parent `18785:184884`](https://www.figma.com/design/EO9tuCsqwuHL8cZ4Eb2psR/?node-id=18785-184884)
and expanded fragment `18785:184924`: an open summary row precedes an indented
region containing a title and a child table with independent header/body columns.

The sibling [assembly contract](table-composition-complex-child-table.figma.md)
owns exact anatomy, dependency closure and verification predicates. Its newly
verified scope resolves this owner's prior missing-sidecar gap only; other
complex-table owners remain separate.

## Documentation Task

`LUU-427` · [GitHub Issue 10](https://github.com/logisticsdesign/logistics-2/issues/10) ·
verified member `danil-lebedev`, GitHub ID `50231562` · agent `Codex` / Specs ·
run/session `luu427-grouped-table-20260922`.