Builds the full TaskDialog on top of the existing @base-ui/react
Dialog primitive. Covers create mode, edit mode (status field +
created_at metadata + delete), dirty-check AlertDialog, delete
confirm AlertDialog, Cmd+Enter submit, and per-field char counters.
Uses react-hook-form + zodResolver against the shared taskSchema.
Priority and status are extracted to PrioritySegmented and
StatusSelect sub-components using MD3 tokens throughout.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
