# DS-004 — Reusable WALKA secondary button

Status: COMPLETED
Issue: #94
Parent UI Task Master: #85
Implementation branch: `agent/ds-004-secondary-button`
Pull request: #100
Stable merge: `a6c33a789f05a0296d860d39c90e7edccd03a05b`

## Delivered

- Added `WalkaSecondaryButton` under `mobile/lib/design_system/components/buttons/`.
- Uses the existing global OutlinedButton theme rather than duplicating navy border/radius/touch-target values.
- Supports optional leading icon, expanded width, enabled and disabled states.
- Focused widget tests cover theme inheritance, callback, minimum themed height, icon, full-width layout and disabled state.

## Validation receipt

- PR head: `f92142b8e666c7519a3a1891251f4ddf7f832701`.
- PR workflow: `31387343604` / run #474 — GREEN.
- Flutter Analyze: GREEN.
- Full Flutter tests: GREEN.
- Android runner + WALKA branding: GREEN.
- Release APK: GREEN.
- Candidate artifact: `9062355930`.
- Candidate digest: `sha256:8206be9d5c795969f453dd25bd9e1c603c390de263eaa85da17d0b4b40732859`.
- Stable merge: `a6c33a789f05a0296d860d39c90e7edccd03a05b`.
- Combined stable-main validation after DS-002..DS-006: workflow `31388321272` / run #486 — GREEN including release APK publication.
- Combined stable source: `90f59f792b92d4789159f44c2714339f6357b042`.
- Verified APK SHA-256: `c070b853cd6d23bef31b304bce3d0983a6d51e36f9b3726b5fd12cc6705936f2`.

## Guardrails preserved

No feature screen, Product Master, navigation, backend, Amazon boundary or protected `Images/` changes.
