修复新建记录时无法自动填充默认值的问题

frontend/src/core/pagetype/default.vue

@@ -982,6 +982,47 @@ async function loadMeta() {
   }
 }
 
+// Set default values from field definitions for new records
+function applyDefaultValues() {
+  const titleField = pageMeta.value?.title_field
+
+  for (const field of metaFields.value) {
+    if (!field.default || field.fieldname === titleField) continue
+    if (field.fieldtype === 'Table' || field.fieldtype === 'Table MultiSelect') continue
+
+    const defaultVal = String(field.default)
+    let value: any = undefined
+
+    if (defaultVal === '__user' || defaultVal.toLowerCase() === 'user') {
+      value = authStore.user?.name || ''
+    } else if (defaultVal === 'user_fullname') {
+      value = authStore.user?.full_name || ''
+    } else if (defaultVal === 'Today') {
+      value = new Date().toISOString().split('T')[0]
+    } else if (defaultVal.toLowerCase() === 'now') {
+      if (field.fieldtype === 'Time') {
+        value = new Date().toTimeString().slice(0, 8)
+      } else {
+        value = new Date().toISOString().slice(0, 19).replace('T', ' ')
+      }
+    } else if (defaultVal.startsWith(':')) {
+      // Dynamic defaults (e.g. ":User") - skip for now, handled by plugins
+      continue
+    } else if (field.fieldtype === 'Check') {
+      value = defaultVal === '1' ? 1 : 0
+    } else if (field.fieldtype === 'Select' && defaultVal) {
+      // Use the default as-is for Select fields
+      value = defaultVal
+    } else {
+      value = field.default
+    }
+
+    if (value !== undefined && record[field.fieldname] === undefined) {
+      record[field.fieldname] = value
+    }
+  }
+}
+
 // 应用字段配置插件
 async function applyFieldConfig() {
   const { triggerFieldConfig } = await import('@/core/plugins/fieldPlugin')
@@ -1057,6 +1098,8 @@ async function loadDetail() {
   if (isNew.value) {
     Object.keys(record).forEach(k => delete record[k])
     originalRecord.value = {}
+    // Set default values from field definitions
+    applyDefaultValues()
     // Trigger record init plugins for new records
     await triggerRecordInit(entity.value, record)
     // Apply field config plugins for new records (set default values)
@@ -1427,6 +1470,12 @@ watch(
       toolbarComponent.value = tb ? markRaw(tb) : null
       await loadMeta()
       await loadDetail()
+      // Re-subscribe realtime for the new document
+      if (!isNew.value && String(newVal.id)) {
+        realtime.watchDocument(entity.value, String(newVal.id), {
+          onUpdate: handlePgUpdate
+        })
+      }
     } else if (idChanged) {
       // Only id changed: reload detail + re-subscribe realtime
       await loadDetail()