Wire claude-opus-4-8 (+ [1m] variant) through the team model picker
alongside 4.7 and 4.6, point the opus alias label at 4.8, update the
reasoning/long-context predicates, and switch the fast-mode UI
message to mention 4.8.
- Introduced CLI_INSTALLER_VERIFY_PROVIDER_MODELS IPC channel for on-demand model verification.
- Implemented handler for verifying provider models in the CliInstallerService.
- Enhanced CLI installation status management with model verification state and availability.
- Updated related components to support model verification feedback in the UI.