* docs(GRO-1289): add UAT_PLAYBOOK.md with auth base URL test cases
Add UAT_PLAYBOOK.md covering VITE_API_URL auth resolution:
- TC-AUTH-4.1.x: Tests for when VITE_API_URL is set
- TC-AUTH-4.2.x: Tests for when VITE_API_URL is unset (window.location.origin fallback)
- TC-AUTH-4.3.x: Session persistence tests
Updated UAT_PLAYBOOK.md §4 — auth base URL resolution test cases.
GRO-1289
* docs(GRO-1289): restore full UAT_PLAYBOOK with auth base URL test cases
- Restored Pre-conditions section (§3)
- Restored original §5.1 Authentication UI test cases
- Inserted new auth base URL resolution test cases (§5.2–§5.4):
- TC-AUTH-5.2.x: VITE_API_URL set scenarios
- TC-AUTH-5.3.x: VITE_API_URL unset fallback scenarios
- TC-AUTH-5.4.x: Session persistence scenarios
- Restored all other feature test sections (§5.5–§5.17)
- Restored broader Update Policy (§7)
Updated UAT_PLAYBOOK.md §5.2–§5.4 — auth base URL resolution test cases
Co-Authored-By: Paperclip <noreply@paperclip.ing>
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Co-authored-by: Chris Farhood <chris@farhood.org>
Co-authored-by: Paperclip <noreply@paperclip.ing>