refactor(bitable): simplify code after ce-simplify-code pass

Behavior-preserving simplifications (net -22 lines):
- useResponsiveBreakpoint: remove createHandler factory, share single sync fn
- RecordDetailDrawer: remove isEditable wrapper, call isFieldEditable directly
- ViewConfigPanel: merge duplicate saveGrouping/saveConditionalFormat into saveU5Config
- groupingRulesUtils: use Array.find instead of for-loop, simplify Number.isFinite check
- GroupingEditor: simplify filter callback to single-expression arrow

Verified: typecheck + build:frontend + ruff all pass.

Refs: ce-simplify-code (LFG Step 3)

src/agentkit/server/frontend/src/components/bitable/GroupingEditor.vue

@@ -127,14 +127,13 @@ watch(
 // these have opaque values that don't form meaningful groups. Number/text/
 // date/select/multiselect all group by their scalar value.
 const selectableFields = computed(() =>
-  props.fields.filter((f) => {
-    return (
+  props.fields.filter(
+    (f) =>
       f.field_type !== 'formula' &&
       f.field_type !== 'lookup' &&
       f.field_type !== 'attachment' &&
-      f.field_type !== 'image'
-    )
-  }),
+      f.field_type !== 'image',
+  ),
 )
 
 function fieldName(fieldId: string): string {

src/agentkit/server/frontend/src/components/bitable/RecordDetailDrawer.vue

@@ -67,7 +67,7 @@
               </span>
             </template>
             <!-- Read-only renders -->
-            <template v-if="!isEditable(f)">
+            <template v-if="!isFieldEditable(f)">
               <SelectDisplay
                 v-if="f.field_type === 'select' || f.field_type === 'multiselect'"
                 :value="(record.values[f.id] as string | string[] | null | undefined)"
@@ -232,13 +232,9 @@ const showFooter = computed(
   () =>
     !!record.value &&
     fields.value.length > 0 &&
-    fields.value.some(isEditable),
+    fields.value.some(isFieldEditable),
 )
 
-function isEditable(f: IBitableField): boolean {
-  return isFieldEditable(f)
-}
-
 function isAgentOwned(f: IBitableField): boolean {
   return f.owner === 'agent'
 }
@@ -264,7 +260,7 @@ watch(
     }
     if (!rec) return
     for (const f of fields.value) {
-      if (!isEditable(f)) continue
+      if (!isFieldEditable(f)) continue
       // Clone primitive values; clone arrays so multiselect edits don't
       // mutate the store's record.
       const v = rec.values[f.id]
@@ -284,7 +280,7 @@ watch(
       // Re-trigger hydration by reassigning via the record watch.
       for (const k of Object.keys(editBuffer)) delete editBuffer[k]
       for (const f of fields.value) {
-        if (!isEditable(f)) continue
+        if (!isFieldEditable(f)) continue
         const v = record.value.values[f.id]
         editBuffer[f.id] = Array.isArray(v) ? [...v] : (v ?? undefined)
       }
@@ -308,7 +304,7 @@ async function onSubmit(): Promise<void> {
     // from currentRecord.values inside updateRecordFields (preserves them).
     const edited: Record<string, unknown> = {}
     for (const f of fields.value) {
-      if (!isEditable(f)) continue
+      if (!isFieldEditable(f)) continue
       if (f.id in editBuffer) edited[f.id] = editBuffer[f.id]
     }
     const ok = await store.updateRecordFields(props.recordId, edited)

src/agentkit/server/frontend/src/components/bitable/ViewConfigPanel.vue

@@ -69,7 +69,7 @@
           :fields="fields"
         />
         <div class="view-config-panel__actions">
-          <a-button type="primary" @click="saveGrouping">保存分组</a-button>
+          <a-button type="primary" @click="saveU5Config">保存分组</a-button>
         </div>
       </a-tab-pane>
 
@@ -80,7 +80,7 @@
           :fields="fields"
         />
         <div class="view-config-panel__actions">
-          <a-button type="primary" @click="saveConditionalFormat">保存条件格式</a-button>
+          <a-button type="primary" @click="saveU5Config">保存条件格式</a-button>
         </div>
       </a-tab-pane>
     </a-tabs>
@@ -210,15 +210,9 @@ async function saveHidden(): Promise<void> {
 // U5: save group_by + conditional_formatting through the new
 // updateViewConfig action (which calls the same PATCH /views endpoint;
 // the route layer validates the U5 sub-keys and 422s on invalid input).
-async function saveGrouping(): Promise<void> {
-  if (!props.view) return
-  await store.updateViewConfig(props.view.id, {
-    group_by: groupByItems.value,
-    conditional_formatting: cfRules.value,
-  })
-}
-
-async function saveConditionalFormat(): Promise<void> {
+// Both tabs' save buttons call this — saving either tab persists both U5
+// keys together (matches the existing merge-then-PATCH behavior).
+async function saveU5Config(): Promise<void> {
   if (!props.view) return
   await store.updateViewConfig(props.view.id, {
     group_by: groupByItems.value,

src/agentkit/server/frontend/src/composables/useResponsiveBreakpoint.ts

@@ -57,26 +57,18 @@ export function useResponsiveBreakpoint(): ResponsiveBreakpoint {
     isDesktop.value = !isMobile.value && !isTablet.value
   }
 
-  function createHandler(): () => void {
-    return () => sync()
-  }
-
-  const mobileHandler = createHandler()
-  const tabletHandler = createHandler()
-  const wideHandler = createHandler()
-
+  // sync 是稳定的函数引用，3 个 mql 共用同一 handler（每个 mql 独立 add/remove）。
   onMounted(() => {
     sync()
-    // addEventListener('change', ...) 是现代标准 API
-    mobileMql?.addEventListener('change', mobileHandler)
-    tabletMql?.addEventListener('change', tabletHandler)
-    wideMql?.addEventListener('change', wideHandler)
+    mobileMql?.addEventListener('change', sync)
+    tabletMql?.addEventListener('change', sync)
+    wideMql?.addEventListener('change', sync)
   })
 
   onUnmounted(() => {
-    mobileMql?.removeEventListener('change', mobileHandler)
-    tabletMql?.removeEventListener('change', tabletHandler)
-    wideMql?.removeEventListener('change', wideHandler)
+    mobileMql?.removeEventListener('change', sync)
+    tabletMql?.removeEventListener('change', sync)
+    wideMql?.removeEventListener('change', sync)
   })
 
   return { isMobile, isTablet, isDesktop, isWide }

src/agentkit/server/frontend/src/helpers/groupingRulesUtils.ts

@@ -259,11 +259,7 @@ export function findFirstMatchingRule(
   value: unknown,
   rules: ConditionalFormatRule[] | undefined,
 ): ConditionalFormatRule | null {
-  if (!rules || rules.length === 0) return null
-  for (const rule of rules) {
-    if (matchConditionalFormatRule(value, rule)) return rule
-  }
-  return null
+  return rules?.find((rule) => matchConditionalFormatRule(value, rule)) ?? null
 }
 
 // ---------------------------------------------------------------------------
@@ -356,7 +352,8 @@ function sortGroupKeys(keys: string[], direction: GroupDirection): void {
   for (const k of keys) {
     if (k === '') continue
     const n = Number(k)
-    if (k !== '' && !Number.isNaN(n) && Number.isFinite(n)) {
+    // Number.isFinite excludes NaN/Infinity; '' already skipped above.
+    if (Number.isFinite(n)) {
       numericKeys.push({ value: n, key: k })
     } else {
       stringKeys.push(k)