port(upstream): #2909 - show organization quota with zero total

[bloodf]

Summary

• What changed: ports upstream decolua/9router#2909 into this fork, adapted to fork structure rather than copied verbatim. Only the hunk matching the upstream PR title was ported.
• Why it changed: the behavior was verified missing against origin/main before any code was written; see the audit ledger docs/campaigns/upstream-open-pr-shortlist-2026-08-12.md.

Type

• fix: — bug fix (committed as port(upstream):, an allowed type in .commitlintrc.cjs)

Breaking changes

• No

Testing

• What was tested: the new unit/translator test for this change, plus the full suite on this branch.
• Commands run: cd tests && npm run test:ci
• Evidence:
  • Raw failures: 0, Known failures still failing: 0
  • Load-bearing proof: the production hunk was reverted with the new test left in place; the test went red, then green on restore. A passing test alone was not accepted as proof.
  • Live seam confirmed reachable by real traffic:
    /dashboard/quota → ProviderLimits.fetchQuota → /api/usage/[id] → getQoderUsage → parseQuotaData('qoder')

Checklist

• Tests added or updated for behavioral changes
• No new dependencies
• Conventional commit used
• CHANGELOG updated if this change is user-facing
• No secrets, keys, credentials, or tokens committed