diff --git a/.claude/skills/web-test/SKILL.md b/.claude/skills/web-test/SKILL.md
index 5b298bfb..df37a757 100644
--- a/.claude/skills/web-test/SKILL.md
+++ b/.claude/skills/web-test/SKILL.md
@@ -240,6 +240,7 @@ Fill form fields by label (fuzzy match). Auto-detects field type.
 | `'5000'` | Plain text | Clipboard paste |
 | `'true'` / `'да'` | Checkbox | Toggle |
 | `'Оплата поставщику'` | Radio | Fuzzy label match |
+| `''` / `null` | Any (except checkbox/radio) | Clear via Shift+F4 |
 
 **DCS report filters**: use human-readable label names. Checkbox is auto-enabled:
 ```js
@@ -250,10 +251,10 @@ await fillFields({
 ```
 
 Returns `{ filled: [{ field, ok, value, method }], form: {...} }`.
-Method is one of: `'toggle'` | `'radio'` | `'paste'` | `'dropdown'` | `'form'` | `'typeahead'`
+Method is one of: `'clear'` | `'toggle'` | `'radio'` | `'paste'` | `'dropdown'` | `'form'` | `'typeahead'`
 
 #### `selectValue(field, search, opts?)` → form state with `selected`
-Select a value from reference field via dropdown or selection form. More reliable than `fillFields` for reference fields that need exact selection from a catalog.
+Select a value from reference field via dropdown or selection form. More reliable than `fillFields` for reference fields that need exact selection from a catalog. Pass empty `search` (`''` or `null`) to clear the field (Shift+F4).
 
 `search` — string for simple search, or `{ field: value }` object for per-field advanced search:
 ```js
@@ -274,7 +275,7 @@ await selectValue('Документ', '0000-000601', { type: 'Реализаци
 Also supports DCS labels — auto-enables the paired checkbox.
 
 #### `fillTableRow(fields, opts)` → form state
-Fill table row cells via Tab navigation. Value is a plain string or `{ value, type }` for composite-type cells.
+Fill table row cells via Tab navigation. Value is a plain string, `{ value, type }` for composite-type cells, or `''`/`null` to clear (Shift+F4).
 
 | Option | Description |
 |--------|-------------|
@@ -435,7 +436,7 @@ Table matching accepts both technical name (`tables[].name`) and visual label (`
 | Key | Context | Action |
 |-----|---------|--------|
 | `F8` | Reference field focused | Create new catalog item |
-| `Shift+F4` | Reference field focused | Clear field value |
+| `Shift+F4` | Any input field focused | Clear field value (auto via `''`/`null` in fillFields/selectValue/fillTableRow) |
 | `F4` | Reference field focused | Open selection form |
 | `Alt+F` | List/table form | Open advanced search dialog |
 
diff --git a/.claude/skills/web-test/scripts/browser.mjs b/.claude/skills/web-test/scripts/browser.mjs
index f8b79403..ca6c07e5 100644
--- a/.claude/skills/web-test/scripts/browser.mjs
+++ b/.claude/skills/web-test/scripts/browser.mjs
@@ -1834,6 +1834,19 @@ export async function fillFields(fields) {
         await waitForStable();
       }
       const selector = `[id="${r.inputId}"]`;
+      // Clear field via Shift+F4 if value is empty (not applicable to checkbox/radio)
+      const rawValue = fields[r.field];
+      const isEmpty = rawValue === '' || rawValue === null || rawValue === undefined;
+      if (isEmpty && !r.isCheckbox && !r.isRadio) {
+        await page.click(selector);
+        await page.waitForTimeout(200);
+        await page.keyboard.press('Shift+F4');
+        await page.waitForTimeout(300);
+        await page.keyboard.press('Tab');
+        await waitForStable();
+        results.push({ field: r.field, ok: true, value: '', method: 'clear' });
+        continue;
+      }
       if (r.isCheckbox) {
         // Checkbox: compare desired with current, toggle if mismatch
         const desired = String(fields[r.field]).toLowerCase();
@@ -2314,6 +2327,27 @@ export async function selectValue(fieldName, searchText, { type } = {}) {
   if (highlightMode) try { await highlight(fieldName); await page.waitForTimeout(500); await unhighlight(); } catch {}
   try {
 
+  // === CLEAR FIELD if searchText is empty/null ===
+  if (!searchText && searchText !== 0) {
+    const inputId = await page.evaluate(`(() => {
+      const p = 'form${formNum}_';
+      const name = ${JSON.stringify(btn.fieldName)};
+      const el = document.querySelector('[id="' + p + name + '"], [id="' + p + name + '_i0"]');
+      return el ? el.id : null;
+    })()`);
+    if (inputId) {
+      await page.click(`[id="${inputId}"]`);
+      await page.waitForTimeout(200);
+      await page.keyboard.press('Shift+F4');
+      await page.waitForTimeout(300);
+      await page.keyboard.press('Tab');
+      await waitForStable();
+    }
+    if (highlightMode) try { await unhighlight(); } catch {}
+    const formData = await getFormState();
+    return { ...formData, selected: { field: fieldName, search: null, method: 'clear' } };
+  }
+
   // === COMPOSITE TYPE HANDLING ===
   // When `type` is specified, clear the field first to reset cached type,
   // then open type selection dialog, pick the type, then pick the value.
@@ -2781,7 +2815,9 @@ export async function fillTableRow(fields, { tab, add, row, table } = {}) {
 
     // Skip if cell already contains the desired value (single-field optimization)
     const firstKey0 = Object.keys(fields)[0];
-    const firstVal0 = typeof fields[firstKey0] === 'object' ? fields[firstKey0].value : String(fields[firstKey0]);
+    const rawFirstVal = fields[firstKey0];
+    const firstVal0 = rawFirstVal === null || rawFirstVal === undefined || rawFirstVal === ''
+      ? '' : (typeof rawFirstVal === 'object' ? rawFirstVal.value : String(rawFirstVal));
     let firstFieldSkipped = false;
     if (cellCoords.currentText && firstVal0 &&
         cellCoords.currentText.toLowerCase().includes(firstVal0.toLowerCase())) {
@@ -2795,6 +2831,57 @@ export async function fillTableRow(fields, { tab, add, row, table } = {}) {
     // Then escalate: dblclick → F4 if needed.
     await page.mouse.click(cellCoords.x, cellCoords.y);
 
+    // Clear cell via Shift+F4 if value is empty
+    if (firstVal0 === '') {
+      await page.waitForTimeout(500);
+      // Check if click opened a selection form — close it first
+      let openedForm = await page.evaluate(`(() => {
+        const forms = {};
+        document.querySelectorAll('[id]').forEach(el => {
+          if (el.offsetWidth === 0 && el.offsetHeight === 0) return;
+          const m = el.id.match(/^form(\\d+)_/);
+          if (m) forms[m[1]] = true;
+        });
+        const nums = Object.keys(forms).map(Number).filter(n => n > ${formNum});
+        return nums.length > 0 ? Math.max(...nums) : null;
+      })()`);
+      if (openedForm !== null) {
+        await page.keyboard.press('Escape');
+        await page.waitForTimeout(500);
+      } else {
+        // No form opened — need to enter edit mode first (dblclick), then close any form that opens
+        await page.mouse.dblclick(cellCoords.x, cellCoords.y);
+        await page.waitForTimeout(500);
+        openedForm = await page.evaluate(`(() => {
+          const forms = {};
+          document.querySelectorAll('[id]').forEach(el => {
+            if (el.offsetWidth === 0 && el.offsetHeight === 0) return;
+            const m = el.id.match(/^form(\\d+)_/);
+            if (m) forms[m[1]] = true;
+          });
+          const nums = Object.keys(forms).map(Number).filter(n => n > ${formNum});
+          return nums.length > 0 ? Math.max(...nums) : null;
+        })()`);
+        if (openedForm !== null) {
+          await page.keyboard.press('Escape');
+          await page.waitForTimeout(500);
+        }
+      }
+      await page.keyboard.press('Shift+F4');
+      await page.waitForTimeout(300);
+      const results = [{ field: firstKey0, ok: true, method: 'clear', value: '' }];
+      // If more fields remain, process them on the same row
+      const remaining = { ...fields };
+      delete remaining[firstKey0];
+      if (Object.keys(remaining).length > 0) {
+        const more = await fillTableRow(remaining, { row, table });
+        if (Array.isArray(more)) results.push(...more);
+        else if (more?.filled) results.push(...more.filled);
+      }
+      const formData = await getFormState();
+      return { filled: results, form: formData };
+    }
+
     // Check if clicked cell is a checkbox (toggle-on-click, no edit mode)
     const checkboxInfo = await page.evaluate(`(() => {
       const el = document.elementFromPoint(${cellCoords.x}, ${cellCoords.y});
@@ -3154,8 +3241,14 @@ export async function fillTableRow(fields, { tab, add, row, table } = {}) {
   // 4. Prepare pending fields for fuzzy matching
   const pending = new Map();
   for (const [key, val] of Object.entries(fields)) {
-    if (val && typeof val === 'object' && 'value' in val) {
-      pending.set(key, { value: String(val.value), type: val.type || null, filled: false });
+    if (val === null || val === undefined || val === '') {
+      pending.set(key, { value: '', type: null, filled: false });
+    } else if (val && typeof val === 'object' && 'value' in val) {
+      const innerVal = val.value;
+      pending.set(key, {
+        value: innerVal === null || innerVal === undefined || innerVal === '' ? '' : String(innerVal),
+        type: val.type || null, filled: false
+      });
     } else {
       pending.set(key, { value: String(val), type: null, filled: false });
     }
@@ -3268,6 +3361,18 @@ export async function fillTableRow(fields, { tab, add, row, table } = {}) {
     const info = pending.get(matchedKey);
     const text = info.value;
 
+    // Clear cell if value is empty (Shift+F4 = native 1C clear)
+    if (text === '') {
+      await page.keyboard.press('Shift+F4');
+      await page.waitForTimeout(300);
+      info.filled = true;
+      results.push({ field: matchedKey, cell: cell.fullName, ok: true, method: 'clear', value: '' });
+      if ([...pending.values()].every(p => p.filled)) break;
+      await page.keyboard.press('Tab');
+      await page.waitForTimeout(500);
+      continue;
+    }
+
     // If user specified a type, always clear and use type selection flow
     if (info.type) {
       await page.keyboard.press('Shift+F4');  // Clear cell to reset any inherited type
diff --git a/docs/web-test-guide.md b/docs/web-test-guide.md
index 8d4e188e..54134a90 100644
--- a/docs/web-test-guide.md
+++ b/docs/web-test-guide.md
@@ -243,9 +243,9 @@ await closeForm({ save: false });
 | Функция | Описание | Возвращает |
 |---------|----------|------------|
 | `clickElement(text, {dblclick?})` | Клик по кнопке/ссылке/строке. `{dblclick: true}` для открытия из списка | form state или `{ submenu }` |
-| `fillFields({name: value})` | Заполнить поля (текст, чекбокс, радио, ссылки, DCS-фильтры) | `{ filled: [{field, ok, method}], form }` |
-| `selectValue(field, search, opts?)` | Выбрать из справочника. search: текст или `{поле: значение}`. `{ type }` для составного типа | form state с `selected` |
-| `fillTableRow(fields, {tab?, add?, row?})` | Заполнить строку. Значение: строка или `{ value, type }` для составного типа | form state |
+| `fillFields({name: value})` | Заполнить поля (текст, чекбокс, радио, ссылки, DCS-фильтры). Пустое значение (`''`/`null`) = очистка | `{ filled: [{field, ok, method}], form }` |
+| `selectValue(field, search, opts?)` | Выбрать из справочника. search: текст, `{поле: значение}` или `''`/`null` для очистки. `{ type }` для составного типа | form state с `selected` |
+| `fillTableRow(fields, {tab?, add?, row?})` | Заполнить строку. Значение: строка, `{ value, type }` для составного типа, `''`/`null` для очистки | form state |
 | `deleteTableRow(row, {tab?})` | Удалить строку по индексу | form state |
 | `closeForm({save?})` | Закрыть форму. `save: false` = "Нет", `save: true` = "Да". Возвращает `closed: true/false` | form state с `closed` |
 | `filterList(text, {field?, exact?})` | Фильтр списка. Без field = все колонки, с field = расширенный поиск | form state |
@@ -260,6 +260,7 @@ await closeForm({ save: false });
 | `'true'` / `'да'` | Чекбокс | toggle |
 | `'Оплата поставщику'` | Радио | fuzzy match по меткам |
 | `'Склад бытовой техники'` (DCS) | Фильтр отчёта | авто-включение чекбокса + заполнение |
+| `''` / `null` | Любое (кроме чекбокс/радио) | очистка через Shift+F4 |
 
 ### Утилиты
 
@@ -291,7 +292,7 @@ await closeForm({ save: false });
 | Клавиша | Контекст | Действие |
 |---------|----------|----------|
 | `F8` | Ссылочное поле | Создать новый элемент |
-| `Shift+F4` | Ссылочное поле | Очистить значение |
+| `Shift+F4` | Любое поле | Очистить значение (автоматизировано: `fillFields({ поле: '' })`) |
 | `F4` | Ссылочное поле | Форма выбора |
 | `Alt+F` | Список/таблица | Расширенный поиск |