Add Claude launch config to ignore list

[ComputelessComputer]

Ignore .claude/launch.json to prevent committing local run configuration artifacts and reduce accidental inclusion of environment-specific files.

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Note

Low Risk
Only updates .gitignore; no application, auth, or runtime behavior changes.

Overview
Adds .claude/launch.json to .gitignore under the existing agent scratch / reference material section, alongside entries like .tmp/ and .codex-security-*.

This keeps local Claude run/launch configuration out of commits so environment-specific tooling files are not accidentally checked in.

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