[umpireboulianne-design]

Summary

• Add a ## Support log redaction & troubleshooting section to docs/DEPLOY.md listing the credentials, headers, session keys, and pre-reveal bid values/nonces that must be removed from keeper (services/keeper), appraisal API (services/appraisal-api), SDK/relayer (packages/sdk), and browser/DevTools (apps/web) logs before sharing.
• Add an automated test in scripts/check-deploy-docs.test.mjs verifying that docs/DEPLOY.md documents all four log surfaces and the required redaction fields while keeping node scripts/check-deploy-docs.mjs green.

Supply-chain review

• No package scripts or dependencies changed. If changed, explain why below.
• No .vscode/, workflow, or other editor/config file changes. If changed, list them below.
• No lockfile changes. If changed, explain the update below.
• No binary or font asset changes. If changed, list and justify them below.
• I confirm no automatic task (such as preinstall/postinstall) was added.
• I confirm no hidden executable payload (encoded blob, obfuscated command, or unexpected binary) was added.
• Any changed executable or binary was reviewed by a maintainer.

Testing

• node scripts/check-deploy-docs.mjs (passes)
• node --test scripts/check-deploy-docs.test.mjs (8/8 tests pass)
• node scripts/check-links.js (passes)

Closes #547
Fixes #547