[theNEXlevel]

Summary

• Replace MUI, custom, and browser-native modal interactions with shadcn Base UI Dialog and AlertDialog components.
• Add an app-level queued confirmation service and give prompts task-specific titles, descriptions, and action labels while preserving workflow outcomes and focus behavior.
• Sync and archive the accessible-shadcn-dialogs OpenSpec change.
• Fix local Next image patterns for the versioned logo and capture the bulk registration grid API from onGridReady before validation.

Verification

• pnpm type-check
• pnpm lint
• openspec validate --specs
• Keyboard and Windows NVDA review across ordinary, destructive, nested, result, and grid confirmation dialogs.