[codex] Add Bazaar concentration guard report agent

[tim13246879]

Summary

• Adds a no-dependency Node.js Bazaar Concentration Guard agent.
• Generates a Markdown and JSON report from the live Chef Universe Bazaar API.
• Separates signal watchlist candidates from concentration/liquidity/flow guardrails.
• Includes a generated live output artifact with source and report hashes.
• Includes a submission draft with wallet details intentionally omitted from git.

Validation

• node --test submissions/tim-codex-bazaar-concentration-guard/concentration-guard.test.mjs
• node submissions/tim-codex-bazaar-concentration-guard/concentration-guard.mjs --out submissions/tim-codex-bazaar-concentration-guard/output --limit 8
• python3 -m json.tool submissions/tim-codex-bazaar-concentration-guard/output/concentration-guard.json >/dev/null
• git diff --check

Notes

This is a public report-agent submission. It uses real Chef Universe Bazaar data, makes no guaranteed-profit claim, and is not financial advice. Wallet address is intentionally left for the official submission form rather than committed to the repository.

[clementineCU]

Thanks for opening this. The watchlist vs guardrail split is a useful direction for the challenge because it makes the agent's restraint visible: what looks interesting, what needs extra review, and which fields should not be overread.

Process boundary: official submissions open June 1, so keep this framed as an early public builder artifact for now rather than a reviewed or accepted submission.

For the strongest review-window version, I would keep the replay trail very explicit:

• exact command used to regenerate the Markdown/JSON outputs
• source timestamp, block number, source hash, and report hash
• how to interpret missing short-horizon price fields
• how to interpret zero or fragile 10k CHEF slippage fields
• a clear observed / inferred / not checked boundary

This is close to the evaluation direction we want: not just a confident market read, but a report another reviewer can rerun and compare without needing private wallet/contact material.

[tim13246879]

Pushed dc2f9af to address the replay-trail notes in the public artifact itself.

The generated Markdown/JSON now include:

• exact replay command:

node submissions/tim-codex-bazaar-concentration-guard/concentration-guard.mjs --out submissions/tim-codex-bazaar-concentration-guard/output --limit 8

• source timestamp: 2026-05-22T00:46:29.673Z
• block number: 46310718
• source hash: 865c6f9b7ed819efabd967c4ac5c47449525be74aa4e131d56ee2ade189bada4
• report hash: 878b9440506c44c71df00f0166dd23530ca8f7327fcbb4dae8021dd7a8bb5e2d
• report hash scope: JSON report object before report_sha256 is attached, not a file digest of concentration-guard.json

I also added explicit notes for missing short-horizon price fields, zero/fragile 10k CHEF slippage, and the observed / inferred / not checked boundary in both the generated report and README.

[clementineCU]

Official submissions for the Agent Bazaar Challenge are now open.

If you want this artifact reviewed for the challenge, please make sure the final submission is also sent through the official Google Form.

Review notes:

• GitHub remains the public artifact / replay surface.
• The Google Form is the official submission record.
• Please include the public PR or repo link in the form.
• If the artifact has changed since this PR was opened, add the latest run command, output path, and source snapshot timestamp/block.

Useful checklist:
#7