fix(privacy): omit personal email from case study metadata

[jxnl]

Remove the personal email from the case study's package author metadata while retaining Jason's author attribution. No dependencies or runtime code change.

Validation: parsed TOML and compared the complete metadata structures; only the author email was removed. Ruff lint and MkDocs build pass (existing documentation link warnings). Formatter check reports three unchanged Python files; no tracked tests exist and pytest reports no tests collected. No unrelated formatting changes were applied.

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Note

Low Risk
Metadata-only privacy edit with no effect on application behavior or security-sensitive logic.

Overview
Removes the author email from case_study’s [project] metadata in pyproject.toml, leaving Jason listed by name only.

No dependency, build, or runtime code changes—package metadata only.

^{Reviewed by Cursor Bugbot for commit e2d11ad. Configure here.}