fix: Include the AI Judge Config key with tracked metrics

[jsonbailey]

Note

Propagates AI config key throughout configs and adds judgeConfigKey to evaluation scores and tracking metadata.

• API/Types:
  • Add required key to LDAIConfig and surface it in all config variants.
  • Extend EvalScore with optional judgeConfigKey.
• Config Utils:
  • Update fromFlagValue/to*Config to accept key and include it in configs.
  • Change createDisabledConfig to require key and embed it in returned configs.
• Client (LDAIClientImpl):
  • Pass key to LDAIConfigUtils.fromFlagValue and createDisabledConfig.
  • Agent multi-fetch now returns configs containing their key.
• Judge:
  • Include judgeConfigKey in parsed evaluation results based on this._aiConfig.key.
• Tracking (LDAIConfigTrackerImpl):
  • trackEvalScores sends judgeConfigKey with event context.
• Tests:
  • Update unit tests to expect key on configs and judgeConfigKey in evals.

^{Written by Cursor Bugbot for commit 6cf3980. This will update automatically on new commits. Configure here.}

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