Audit caught 'data-state not emitted' on the ColorPicker Provider. The
morfo declares `data-state ∈ [open, closed]` with `value: v.stateRef('open')`
— the runtime's `syncAttrs` can sync this from `dom.apply`, but only if
the provider receives a `ref` on its opts (which the ColorPickerProvider
doesn't — `ColorPickerOpts` extends `ProviderOpts` + `StateProps` without
the ref slot).
Rather than re-shape the opts to add ref + bind it in the wrapper, just
emit `data-state` explicitly in the provider's props derivation, same
form as the other six declarative attrs that the provider already
materialises (`data-format`, `data-invalid`, `data-disabled`,
`data-readonly`, `data-required`, `aria-invalid`). Matches the
dialog/drawer/popover doctrinal pattern for disclosure attrs.
After this commit `morfo:check`: 1 issue remaining (date-picker
`data-kind="date"` — separate domain issue, addressed next).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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