fix(payment-detection): mantle subgraph URL

[alexandre-abrioux-rf]

Description

This PR changes the Mantle subgraph URL, which currently returns an error when called.

Tests

Calling the current URL

curl 'https://subgraph-api.mantle.xyz/api/public/555176e7-c1f4-49f9-9180-f2f03538b039/subgraphs/requestnetwork/request-payments-mantle/v0.1.0/gn' \
  -X POST \
  --data-raw '{"query":"{\n  _meta {\n    block {\n      hash\n      timestamp\n    }\n  }\n}"}'

--> gives failure:

{
  "errors": [
    {
      "message": "deployment `requestnetwork/request-payments-mantle_67eb19c6-a23c-4b88-8517-593d8e5bac34` does not exist"
    }
  ]
}

Calling the fixed URL

curl 'https://subgraph-api.mantle.xyz/api/public/555176e7-c1f4-49f9-9180-f2f03538b039/subgraphs/requestnetwork/request-payments-mantle/541f68f/gn' \
  -X POST \
  --data-raw '{"query":"{\n  _meta {\n    block {\n      hash\n      timestamp\n    }\n  }\n}"}'

--> results in:

{
  "data": {
    "_meta": {
      "block": {
        "hash": "0x69fe6384dff4d2e70cddb80e44c2a1a53909e7890ffe8e47a29e2cd5097a1c18",
        "timestamp": 1785919632
      }
    }
  }
}

Why the URL change?

The hash 541f68f corresponds to the following commit: RequestNetwork/payments-subgraph@541f68f ; but I'm not sure how it was deployed, as the deployment CI still refers to an old URL graph.fusionx.finance: https://github.com/RequestNetwork/payments-subgraph/blob/c176246e16061c10ca794f0ebba318ec7b70fc52/.github/workflows/deploy.yaml#L67

[greptile-apps]

Greptile Summary

The PR replaces the broken Mantle payment subgraph endpoint with the working 541f68f deployment.

• Updates the Mantle URL used by payment detection.
• Updates the corresponding URL assertion to match the implementation.

Confidence Score: 5/5

The PR appears safe to merge.

No blocking failure remains; the implementation and its Mantle URL assertion now use the same endpoint.

Important Files Changed

Filename	Overview
packages/payment-detection/src/thegraph/client.ts	Replaces the obsolete Mantle deployment URL with the endpoint documented as working in the PR.
packages/payment-detection/test/thegraph/client.test.ts	Updates the Mantle URL expectation, resolving the previously reported stale assertion.

_{Reviews (2): Last reviewed commit: "fix test" | Re-trigger Greptile}