Add Price Watcher x402 listing + logo

[mooniesai]

This PR adds Price Watcher x402 to the x402 ecosystem listing.

The service provides a paid price-checking API protected by x402 exact-payment middleware.

Added:

• Metadata entry under typescript/site/app/ecosystem/partners-data/price-watcher
• Professional logo under typescript/site/public/logos
• Live production endpoint:
  https://e-commerce-price-monitoring-production.up.railway.app/

The service enables AI agents to:

• Retrieve real-time product prices from a provided URL
• Evaluate optional price thresholds
• Integrate programmable price intelligence into automation workflows

Tests

• Verified production deployment on Railway
• Confirmed /playwright-check endpoint returns success
• Confirmed /v1/price/check enforces 402 payment
• Confirmed successful JSON response after payment

Example:

curl -X POST https://e-commerce-price-monitoring-production.up.railway.app/v1/price/check
-H "Content-Type: application/json"
-d '{"url":"https://example.com","threshold":100}'
Checklist

• Metadata structure matches existing ecosystem entries
• Logo path resolves correctly
• Production endpoint is live and reachable

[cb-heimdall]

🟡 Heimdall Review Status

Requirement	Status	More Info
Reviews	🟡 0/1	Denominator calculation Show calculation 1 if user is bot 0 1 if user is external 0 2 if repo is sensitive 0 From .codeflow.yml 1 Additional review requirements Show calculation Max 0 0 From CODEOWNERS 0 Global minimum 0 Max 1 1 1 if commit is unverified 1 Sum 2

[vercel]

Someone is attempting to deploy a commit to the Coinbase Team on Vercel.

A member of the Team first needs to authorize it.

[phdargen]

We require commit signing, please rebase and verify your commits.
See here for instructions: https://docs.github.com/en/authentication/managing-commit-signature-verification/about-commit-signature-verification

[Must-be-Ash]

please tag me to review once you have signed your commits