Goal

Add a tiny expected-values note under the Environment variable quick reference section in examples/README.md so first-time users know what values to use when they want isolated trace storage or a non-default UI port.

Scope

Keep this docs-only and edit only:

• examples/README.md

Suggested location: directly below the environment variable quick reference table.

Suggested change

Add one or two short sentences showing practical values, for example:

• BROWSERTRACE_HOME=/tmp/browsertrace-demo for an isolated local demo store.
• BROWSERTRACE_PORT=4000 when port 3000 is already in use.

Keep the existing Windows PowerShell examples in the troubleshooting sections unchanged unless you only need to reference them.

Acceptance criteria

• The note mentions both BROWSERTRACE_HOME and BROWSERTRACE_PORT.
• It keeps the wording concise and beginner-friendly.
• It does not change code, examples, or generated assets.
• It does not ask for stars, upvotes, reposts, or promotion.

Verification

Please include the exact commands you ran. For a docs-only change, this is enough:

git diff --check
uv run --python 3.11 --extra dev pytest tests/test_metadata.py -q

If uv is not available in your environment, say that in the PR and run the closest local docs check you can.