Create logout, and Fire global event for need login

Currently only console.log "Need Login" and no logout for currently login user.

No file names or tests are provided. Start by searching the codebase for the "Need Login" console.log and the current auth/session logic, especially where login state is tracked. In the same flow, add/logout wiring and fire a global need-login event where the log currently happens. Validate by running the app and checking that the auth-required path emits the event instead of logging and a logged-in user can successfully log out.

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