Avoid Postman bearer false positive

[roshanjonah]

Summary

• Reword the attachment download operation description to avoid Postman Secret Scanner treating documentation text as a bearer token
• Regenerate the mailbox Postman collection from the updated OpenAPI snapshot
• Sync hosted Postman collections

Verification

• npm run postman:emit
• npm run postman:check
• npm run confidentiality:check
• npm run external-links:check
• POSTMAN_API_KEY=... npm run postman:hosted:sync
• POSTMAN_API_KEY=... npm run postman:hosted:check

[mintlify]

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Project	Status	Preview	Updated (UTC)
sendmux	🔴 Failed	–	Jul 3, 2026, 2:15 AM

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