ci: inject private Robinhood RPCs

[findolor]

Motivation

Robinhood local DB catch-up cannot complete reliably against the public registry RPCs: the official endpoint rate-limits historical log requests and the fallback requires authenticated archive access.

Solution

• Require PRIVATE_ROBINHOOD_RPC_URLS in the private-registry upload workflow.
• Extend the private artifact builder with repeatable and comma-separated Robinhood RPC options.
• Generalize the RPC-prepending transformer so private URLs can be injected for both Base and Robinhood.
• Keep private endpoints first while preserving and deduplicating public fallbacks.

Deployment prerequisite

Before running the updated workflow, enable Robinhood Mainnet for the provider credentials and set the repository secret PRIVATE_ROBINHOOD_RPC_URLS. The existing Base credentials are network-scoped: Alchemy reports Robinhood is disabled for the app, and HyperRPC returns HTTP 403 on the Robinhood endpoint.

Checks

• bash -n scripts/build-private-registry-artifact.sh
• Workflow YAML parses successfully
• Generic transformer resolves both networks.base.rpcs and networks.robinhood.rpcs
• Generated settings prepend dummy private endpoints and deduplicate existing public endpoints for both networks
• Missing Robinhood private RPC input fails validation

[findolor]

• ci: inject private Robinhood RPCs #82 👈 (View in Graphite)
• main

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