Local reviews faster; deprecated flags removed

CLI v0.6.0

v0.6.0 makes local reviews faster to start, easier to understand, and simpler to operate.

• coderabbit review --fast adds an explicit opt-in for faster local reviews.
• Auth status, sign-in, organization selection, and rate-limit messages now provide clearer context in coderabbit auth status.
• --interactive and --prompt-only are deprecated; use plain review mode and coderabbit review --agent.
• Ctrl-C now exits review and auth cleanup promptly.
• Repository-to-organization matching now handles SSH remotes with non-git users (such as GitHub Enterprise org-named users), ssh:// remotes with custom ports, and self-hosted instances registered on custom web ports or subpaths, so reviews attribute to your installed organization instead of falling back to free review limits.
• Branch lists are no longer corrupted by Git worktree markers when a branch is checked out in another worktree.

See the CLI documentation and CLI Command Reference for more details.