[jeffdupont]

What

Part of AIC-3692. #176 renamed the telemetry resource's project id attribute from highlight.project_id to launchdarkly.project_id, but the docs never named either one. The client README and agents.md listed service.name and deployment.environment as what initClient() sets, and stopped there.

The README note and the agents.md bullet say initClient() sets launchdarkly.project_id to the resolved SDK key, not the project's ID. Neither mentions highlight.project_id: no customer-facing doc ever named it, and the changelog's breaking-change entry from #176 covers the rename.

Docs only: packages/client/README.md and packages/client/agents.md. No code, API report or link changes. The Python SDK gets the same note in launchdarkly/python-ai-sdk#239.

Checks

• The added lines contain no links, no URLs and no references to the private spec.
• Every statement matches lifecycle.ts on main and the tests fix(client)!: stamp launchdarkly.project_id on the telemetry resource #176 changed in lifecycle.test.ts.
• Committed through the GitHub API, so Biome wasn't run locally. CI covers it.

🤖 Generated with Claude Code

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Note

Overview
Documents what initClient() already puts on the OTel resource after the rename from highlight.project_id to launchdarkly.project_id.

packages/client/README.md and agents.md now state that launchdarkly.project_id is set to the resolved SDK key, not the LaunchDarkly project ID, and that this attribute is not configurable via env or options (unlike service.name and deployment.environment). No runtime or API changes.

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