feat(billing): validate details when adding card

[RemiBonnet]

Summary

https://qovery.slack.com/archives/C02P3MA2NKT/p1790002401588209

• Requires customers to enter their billing address before organization creation instead of silently defaulting to New York.
• Requires a VAT number for EU billing countries and keeps it optional elsewhere.
• Validates supported EU and US postal-code formats and trims billing values before submission.
• Reuses the billing details form and validation between onboarding and organization settings.

Screenshots / Recordings

Testing

• Onboarding focused Jest suites: 7 tests
• Organization billing focused Jest suites: 25 tests
• ESLint on affected files
• TypeScript checks for both affected libraries
• Formatting and diff checks

PR Checklist

• I followed naming, styling, and TypeScript rules (see .cursor/rules)
• I performed a self-review (diff inspected, dead code removed)
• I titled the PR using Conventional Commits with a scope when possible - required for semantic-release
• I only kept necessary comments, written in English
• I involved a designer to validate UI changes if I am not a designer
• I covered new business logic with tests (unit)
• I confirmed CI is green (Codecov red can be accepted)
• I reviewed and executed locally any assisted code

---

Summary by cubic

Requires valid billing details before a card can be added in organization settings and stops creating default billing details during onboarding.

• Removes the implicit New York billing address created at organization creation.
• Requires a VAT number for EU billing countries, keeps it optional elsewhere, and shows rejected VAT numbers inline on the field.
• Validates postal codes against supported EU and US formats and requires a value for unsupported countries.
• Trims billing values before submission and saves them before a card is added.
• Disables the add/update card button until billing details are valid and the card form is complete.
• Shows an error toast when adding a card or saving billing details fails validation.
• Fixes Chargebee card field styling in dark mode.

^{Written for commit 0aa58ca. Summary will update on new commits.}

[nx-cloud]

View your CI Pipeline Execution ↗ for commit 0aa58ca

Command	Status	Duration	Result
nx run console:build --parallel=3 --configurati...	✅ Succeeded	58s	View ↗
nx affected --target=test --parallel=3 --config...	✅ Succeeded	3m 4s	View ↗
nx affected --target=lint --parallel=3	✅ Succeeded	2m 27s	View ↗
nx-cloud record -- yarn nx format:check	✅ Succeeded	6s	View ↗

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---

☁️ Nx Cloud last updated this comment at 2026-09-22 12:32:11 UTC

[cubic-dev-ai]

All reported issues were addressed across 10 files

<sub>Reply with feedback, questions, or to request a fix.

Re-trigger cubic</sub>

[codecov]

Codecov Report

❌ Patch coverage is 74.24242% with 17 lines in your changes missing coverage. Please review.
✅ Project coverage is 50.60%. Comparing base (841ab40) to head (0aa58ca).
⚠️ Report is 2 commits behind head on staging.

Files with missing lines	Patch %	Lines
...tings-billing-details/settings-billing-details.tsx	70.27%	2 Missing and 9 partials ⚠️
...b/hooks/use-add-credit-card/use-add-credit-card.ts	0.00%	2 Missing ⚠️
...s/use-delete-credit-card/use-delete-credit-card.ts	0.00%	2 Missing ⚠️
...rc/lib/components/inputs/input-text/input-text.tsx	0.00%	2 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           staging    #2994      +/-   ##
===========================================
- Coverage    51.43%   50.60%   -0.83%     
===========================================
  Files          710     1264     +554     
  Lines        17398    27758   +10360     
  Branches      5231     8384    +3153     
===========================================
+ Hits          8949    14048    +5099     
- Misses        7002    11390    +4388     
- Partials      1447     2320     +873     

Flag	Coverage Δ
unittests	50.60% <74.24%> (-0.83%)	⬇️

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[rmnbrd]

Looks good to me ✅

[RemiBonnet]

🎉 This PR is included in version 1.360.0 🎉

The release is available on GitHub release

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