Quota gates are resource-state conflicts, not payment failures —
RFC 9110 reserves 402 for billing/payment failures specifically. The
canonical Molecule-AI/docs PR #82 already shipped the corrected text;
this brings the molecule-core copy of the tutorial in line.
The inline parenthetical "(not 402 Payment Required — quota gates are
resource-state conflicts, not payment failures, per RFC 9110)" doubles
as a regression anchor: a future edit that flips 409 back to 402 would
have to also reword that explanation, making the change a deliberate
two-step act rather than a casual oversight.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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