Renamed CDP env vars to modern convention

[CarsonRoscoe]

Description

CDP Env var naming has changed from v1 to v2 in the CDP SDK. As we're moving the repo over to using the latest version, we are also updating all the env var naming conventions along the way.

tl;dr: CDP_API_KEY_NAME -> CDP_API_KEY_ID and CDP_API_KEY_PRIVATE_KEY -> CDP_API_KEY_SECRET

Tests

Testing by randomly selecting CDP examples in both Typescript and Python to run, and confirming they are all running as expected.

Note

This knowingly breaks the next and mcp templates in the create-onchain-agent CLI locally. They will automatically be fixed once we do our next release on Friday. In the meantime, we are ignoring these templates from the turborepo so that it does not trip up our github actions.

(The break is that they rely on the new interface, but they install from the npm registry, so until the release is out, they are trying to use an interface that is not yet available)

Checklist

• Added documentation to all relevant README.md files
• Added a changelog entry

[cb-heimdall]

✅ Heimdall Review Status

Requirement	Status	More Info
Reviews	✅ 1/1	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 0 Sum 1

[avidreder]

LGTM