Add `felis breakGlass`, a root-only interactive TUI that provisions or
resets the Owner account directly against Postgres and enables local
password login. It is the local-root recovery path that bypasses web
Zero Trust by design - used to bootstrap the first Owner credential and
to recover when the web login is unreachable.
- Bare `felis` prints CLI usage only; breakGlass is the sole subcommand
that enters a TUI rather than running as a CLI.
- Refuses to run unless euid is 0 (try: sudo felis breakGlass); on
non-Unix platforms the euid check also refuses.
- Generates a one-time Owner password, sets must_change_password, and
prints a durable summary (username, one-time password, op.console
login URL derived from the configured root domain) after the
alt-screen TUI is torn down.
Covered by Go unit tests over a fake owner store.
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