Description

This PR implements the logfire auth logout command, allowing users to remove their stored credentials from ~/.logfire/default.toml directly via the CLI.

Closes #1596

Changes

• Core: Added logout(base_url) method to UserTokenCollection in logfire/_internal/auth.py to handle targeted and complete token removal.
• CLI Handler: Added parse_logout() in logfire/_internal/cli/auth.py.
• Testing: Added tests in tests/test_auth.py and tests/test_cli.py.

Usage

logfire auth logout               # Log out of all regions

logfire --region us auth logout   # Log out of a specific region

Summary by cubic

Adds the logfire auth logout subcommand to remove saved credentials in ~/.logfire/default.toml for all regions or a specific region. Shows per-URL success, clear errors, and exits with code 1 on failure.

• New Features
  • Implemented UserTokenCollection.logout(base_url=None) to delete token(s), persist changes, return removed URL(s), and raise LogfireConfigError when not logged in or URL not found.
  • Added CLI auth logout (parse_logout) under auth; respects --region or logs out from all; prints per-URL confirmation and the final removal path; exits 1 on errors.
  • Updated stubs in logfire-api and added tests for single/multiple removal, wrong/missing region, not-logged-in cases, and CLI outputs/exit codes.

^{Written for commit 5327757. Summary will update on new commits.}