docs(web-test): сжать описание мультивыбора selectValue в SKILL.md

Убрано перечисление 4 внутренних поверхностей и «auto-detected gesture» —
протекающая реализация, модели не нужна. Оставлено только то, что нужно
вызывающей модели: массив → мультивыбор, replace, форма возврата
(values/notSelected), формы элементов.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

.claude/skills/web-test/SKILL.md

@@ -340,21 +340,14 @@ await selectValue('Документ', '0000-000601', { type: 'Реализаци
 
 Also supports DCS labels — auto-enables the paired checkbox.
 
-**Multi-select (value-list fields)** — pass an **array** to select several values at once. Works
-across all "список значений" surfaces (checkbox form, intermediate pool + Подбор, inline cloud
-dropdown, catalog multi-row select) — the right gesture is auto-detected. Always **replace**
-semantics (the field ends up with exactly the given set):
+**Multi-select** — pass an **array** to select several values at once; the field is set to exactly
+that set (replace). Returns `selected: { field, values, notSelected? }` — `values` are the ones
+actually selected; any value the field doesn't offer goes to `notSelected: [{ value, reason }]`
+(the call doesn't throw). Elements take the same forms as `search` (string, or `{ col: value }`).
 ```js
 await selectValue('Наименование компании', ['Альфа ООО', 'Бета АО']);
-// result.selected = { field: 'Наименование компании', values: ['Альфа ООО', 'Бета АО'] }
-
-// Values not offered by the field land in notSelected (the call does not throw):
-const r = await selectValue('Организации', ['Альфа ООО', 'Несуществующая']);
-// r.selected = { field: 'Организации', values: ['Альфа ООО'],
-//                notSelected: [{ value: 'Несуществующая', reason: 'not_in_list' }] }
+// selected: { field: 'Наименование компании', values: ['Альфа ООО', 'Бета АО'] }
 ```
-Array elements are strings (the displayed value); objects `{ col: value }` are passed through as
-the catalog search (for surfaces that open a selection catalog).
 
 #### `fillTableRow(fields, opts)` → form state with `filled` (+ optional `notFilled`)
 Fill table row cells via Tab navigation. Value is a plain string, `{ value, type }` for composite-type cells, or `''`/`null` to clear (Shift+F4).