RawAccordion / EddAccordion. el-id lands as data-testid on the accordion
root. The expand toggle is the icon button inside the summary.

RawAutocomplete. el-id lands as id on the combobox <input>.

RawButton, RawFab, RawIconButton, RawChoiceButton.
el-id lands as data-testid on the <button>.

RawCheckbox and RawSwitch. el-id lands as id on the native
<input type=checkbox>, so checked state is read from the input itself.

Collect browser errors while a test runs, e.g. to fail a smoke test when
a page throws or logs an error.

  (let [errors (console/watch-errors!)]
    ... drive the UI ...
    (is (empty? (console/page-errors errors))))

EddDatePicker / RawDatePicker.

MUI v9 renders a sectioned field: el-id lands on a hidden input and the
visible value lives in Day / Month / Year spinbutton sections. These
functions hide that so tests only deal with "dd.MM.yyyy" strings.

RawDialog. MUI renders the dialog in a portal; el-id lands as
data-testid on the dialog root, so it is found wherever it is mounted.

Read-only queries for display components: typography, badge, chip,
avatar, alert, list, table, tree view, card, backdrop, progress, skeleton.

RawDrawer / RawSwipeableDrawer. el-id lands as data-testid on the drawer
root, which is portalled and only present while open.

RawMenu / RawMenuItem. Items carry their own el-id.

RawRadioGroup. el-id lands as data-testid on the radiogroup.

RawSelect and RawFormSelect.
RawSelect: el-id is the combobox itself.
RawFormSelect: the combobox is el-id + "-select".

RawSlider. el-id lands on the slider root <span>; the value lives on
the inner <input type=range>, which is driven with the keyboard.

RawSnackbar. el-id lands as data-testid on the snackbar root, which only
exists while it is open.

RawSwitch. Behaves like a checkbox (el-id lands on the native input,
role=switch). For two-value switches `on?` means the right value.

RawTabs. el-id lands as data-testid on the tabs root.

EddTextEditor / RawTextEditor. The editor uses el-id as its id and derives
the editable area and the edit / save / discard buttons from it.

RawTextField, RawNumberField, RawPercentField.
el-id lands as id on the native <input>.

RawToggleButtonGroup / RawToggleButton. el-id lands as data-testid on
the group; buttons are found by their value.

RawTooltip. el-id lands as data-testid on the wrapping Grid; the tooltip
popup is portalled with role=tooltip.

Read the current state of any primitive by el-id, and scan a whole page
into a nested map keyed by el-id segments.

`reading-of` detects the primitive type from the rendered DOM and returns a
reading map:
  text / number / percent field -> {:type :input        :value ".." :label ".."}
  checkbox                       -> {:type :checkbox     :value true  :label ".."}
  switch                         -> {:type :switch       :value true  :label ".."}
  select                         -> {:type :select       :value "selected label"}
  radio group                    -> {:type :radio        :value "selected value"}
  slider                         -> {:type :slider       :value 30.0}
  autocomplete                   -> {:type :autocomplete :value ".." or ["chip" ..]}
  anything else                  -> {:type :text         :text "visible text"}

`scan` returns the same reading maps as its leaves. The detection and
nesting logic lives in web.primitives.testing.scan, shared with the
gallery's in-browser snapshot button.