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fix(verify): stop printing the issuer twice on co-branded credentials - #85

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fix/verify-cobrand-duplicate
Aug 29, 2026
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fix(verify): stop printing the issuer twice on co-branded credentials#85
teetangh merged 2 commits into
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fix/verify-cobrand-duplicate

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@teetangh teetangh commented Aug 29, 2026

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Found during a browser tour of the open PRs, and confirmed live on the #80 preview:

Issued by Nalanda University × Nalanda University

Every program certificate rendered it. A program run by the same organisation that awards it stores that organisation in both issuer and metadata.coBrandPartner, and the page concatenated them unconditionally.

Cosmetic, but it lands on the one page a sceptical employer actually reads — the page the entire "verifiable credential" pitch rests on. Three seeded program credentials show it today: NX7K-4MPQ-W2TR, NX9P-2KTM-R7WD, NX4B-8HLQ-Z3VG.

Why fixed in code, not in the seed

The data isn't wrong — the organisation genuinely is both issuer and partner. The presentation was wrong, and patching the seed would leave any real tenant that co-brands with itself hitting the same thing.

issuerLine() is extracted as a pure helper (matching canGrade / canAccessTenantType / asCourseLevel) and compares case-insensitively after trimming, because credential metadata is hand-entered and "nalanda university" is the same institution as "Nalanda University".

Verification

pnpm typecheck clean · pnpm lint 0 errors · 119 tests (+4: genuine co-brand, same-org, casing/whitespace variants, and the no-co-brand fallback).

No schema changes. No overlap with #77, #78, #79, #80, #81 or #82 — none touch this file.

Summary by CodeRabbit

  • Improvements

    • Verification pages now display issuer and co-brand information consistently.
    • Duplicate issuer names are suppressed, including case or whitespace variations.
    • Missing or blank co-brand details now fall back cleanly to the issuer name.
  • Tests

    • Added coverage for co-brand formatting and fallback scenarios.

Found during a browser tour of the open PRs. The public credential page rendered

    Issued by Nalanda University × Nalanda University

for every program certificate, because a program run by the same organisation
that awards it stores that organisation in both `issuer` and
`metadata.coBrandPartner`, and the page concatenated them unconditionally.

Small, but it lands on the one page a sceptical employer actually reads — the
page the whole "verifiable credential" pitch rests on. Three seeded program
credentials show it today (NX7K-4MPQ-W2TR, NX9P-2KTM-R7WD, NX4B-8HLQ-Z3VG).

Fixed in code rather than in the seed: the data is legitimate — the org really
is both issuer and partner — so the presentation is what was wrong, and any
tenant that co-brands with itself would have hit this again.

`issuerLine()` is extracted as a pure helper and compares case-insensitively
after trimming, since credential metadata is hand-entered and "nalanda
university" is the same institution as "Nalanda University".

Tests: 119 (+4).
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📒 Files selected for processing (3)
  • src/app/(marketing)/verify/[code]/page.tsx
  • src/lib/credentials/issuer-line.ts
  • tests/unit/issuer-line.test.ts
📝 Walkthrough

Walkthrough

The PR adds the shared issuerLine helper, tests its formatting rules, and uses its result in the verification page issuer pill.

Changes

Issuer line formatting

Layer / File(s) Summary
Issuer line helper and coverage
src/lib/credentials/issuer-line.ts, tests/unit/issuer-line.test.ts
The new helper formats distinct issuer and co-brand names, suppresses duplicates, and falls back to the issuer. Tests cover casing, whitespace, missing values, and blank values.
Verification page integration
src/app/(marketing)/verify/[code]/page.tsx
The verification page uses issuerLine(issuer, coBrandPartner) and displays the resulting issuer text.

Estimated code review effort: 2 (Simple) | ~10 minutes

Merge Risk: 🔵 Low · up to 8f943

The verification page can fail to render for credentials with malformed co-brand metadata because the new formatting logic trims the value without first confirming it is a string. This is a bounded, localized risk that is mergeable with explicit owner awareness and follow-up.

Poem

A rabbit trims the issuer line
And joins two names with × so fine
Duplicate partners hop away
Tests guard each case today
The verification pill shines clear

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name Status Explanation Resolution
Docstring Coverage ⚠️ Warning Docstring coverage is 50.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 2 functions across 3 files. Write docstrings for the functions missing them to satisfy the coverage threshold.
✅ Passed checks (4 passed)
Check name Status Explanation
Description Check ✅ Passed Check skipped - CodeRabbit’s high-level summary is enabled.
Title check ✅ Passed The title clearly and concisely describes the main change: preventing duplicate issuer text on co-branded credential verification pages.
Linked Issues check ✅ Passed Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check ✅ Passed Check skipped because no linked issues were found for this pull request.
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  • Create PR with unit tests
  • Commit unit tests in branch fix/verify-cobrand-duplicate

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Actionable comments posted: 1

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Inline comments:
In `@src/lib/credentials/issuer-line.ts`:
- Line 13: Update issuerLine to verify coBrandPartner is a string before
trimming it, normalizing only string values and preserving the issuer fallback
for non-string metadata.
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📒 Files selected for processing (3)
  • src/app/(marketing)/verify/[code]/page.tsx
  • src/lib/credentials/issuer-line.ts
  • tests/unit/issuer-line.test.ts

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Comment thread src/lib/credentials/issuer-line.ts
`credential.metadata` is an untyped JSON column, so the
`as { coBrandPartner?: string }` cast on the verify page was a compile-time
promise only. A non-string that reached the row some other way would land on
`issuerLine`'s `.trim()` and throw — a 500 on the public credential page
instead of the issuer fallback.

`coBrandPartnerFrom()` does the narrowing where the JSON is read, so
`issuerLine` stays pure and typed. Every live row is a string today, so this
changes nothing that renders now; it closes the boundary.

Part of #85

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
@teetangh
teetangh merged commit 6afce50 into dev Aug 29, 2026
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@teetangh teetangh mentioned this pull request Aug 29, 2026
@teetangh
teetangh deleted the fix/verify-cobrand-duplicate branch August 29, 2026 13:34
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