Release 5.0.0

[armando-rodriguez-cko]

• The merchant-specific subdomain option is now required. Set it, or pass useLegacyDomain to keep using the shared checkout.com hosts (feat: require the subdomain option or an explicit useLegacyDomain opt-out #448)
• An invalid subdomain now throws instead of being silently ignored, including on the exported EnvironmentSubdomain class (feat: require the subdomain option or an explicit useLegacyDomain opt-out #448)
• Document optional amount on payment voids to support partial voids (feat(payments): document and type optional amount on payment voids #449)
• Document the ISV (SaaS seller) payout schedule fields balance_minimum, carry_forward_enabled and payment_instrument_id (feat(accounts): document ISV payout schedule fields and response links #450)

[agent-wall-e]

🟢 Risk Classification: LOW

Approval route: AI Auto-Approval
Rollback controls: Automated Instant Rollback + feature flags

Classification reasons

• 2.2.7_dependency_upgrade

Operational gates

• ✅ jira_ticket
• ✅ independent_review

Files analysed: 1

---

_{wall-e 2026.06.19-02 · policy 376219bc71e6…}

[agent-wall-e]

🔬 Debug — why this classification?

Each reason code emitted by the classifier, its source clause in the AI in SDLC Control Framework, and what it means.

Reason code	Kind	Clause	Meaning
2.2.7_dependency_upgrade	classifying	§2.2.7	All files are manifest + lockfile, and no security-sensitive package was touched.

Kinds:

• classifying — this rule contributed to the chosen tier.
• informational — context only; did not by itself decide the tier.

See issue #3 for the proposal to formalise this map as Appendix A of the standards doc.

_{wall-e 2026.06.19-02 · debug}

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[agent-wall-e]

✅ Auto-approved — this PR meets all Low-risk criteria.

All checks passed, no unresolved comments, and the change classification is:

• 2.2.7_dependency_upgrade

_{wall-e 2026.06.19-02 · policy 376219bc71e6…}