# DS-009 — Reusable WALKA metric tile

Status: COMPLETED
Issue: #108
PR: #114
Parent UI Task Master: #85
Implementation branch: `agent/ds-009-metric-tile`

## Delivered

- Added `WalkaMetricTile` under `mobile/lib/design_system/components/cards/`.
- Centralizes compact value/label/supporting-text hierarchy using existing WALKA typography and color tokens.
- Supports centered and start alignment without owning or inventing business values.
- Exposes a generated accessible label with an override for clearer spoken wording when needed.
- Focused widget tests cover hierarchy, optional supporting text, alignment, semantics and compact-width wrapping.

## Guardrails

- No business metric values are embedded in the component.
- No feature-page integration.
- No Product Master, backend, Amazon boundary or protected `Images/` changes.

## Validation receipts

- PR head: `8b53a89ab6c298d177aae1309ec416bde3f93c27`.
- PR workflow: run #494 / `31390966240` — Flutter Analyze, full Flutter tests and Android release APK Green.
- PR APK artifact: `9063768710`, digest `sha256:6d81bcaca015f9ad1b574389c4e4ab1acc04248bec848aaad3db112c3041660f`.
- Stable merge: `be7526d426c8e280f46b65a90f60b34fc7d5f485`.
- Combined stable-main validation containing DS-008..DS-012: run #504 / `31391703159` Green, including release APK and stable publication.
- Combined stable APK artifact: `9064126077`, digest `sha256:36c5dc7461014af8a6f628372325ff73a562d64ef5a3b0172cc24e0d091591bc`.
- Stable verified APK source: `f3b6d465c9b69d8b58bf666f7d59ed38fcbfada1`; APK SHA-256 `902b6986a5b748f1b9351441ac4d0bb162a1cbcc22d612b8fba7d47677c36905`.
