fix: align appointment viewing and fleet follow-up navigation

src/modules/appointment-calendar/AppointmentCalendarPanel.vue

@@ -15,6 +15,7 @@ export interface CalendarEvent {
   fields: Array<{ label: string; value?: string | null }>
   inboundCodes?: Array<string | null | undefined>
   canEdit?: boolean
+  canView?: boolean
   canDelete?: boolean
   sourcePath?: string
 }
@@ -32,6 +33,7 @@ const emit = defineEmits<{
   range: [range: { from: string; to: string }]
   create: [date: string]
   edit: [event: CalendarEvent]
+  view: [event: CalendarEvent]
   delete: [event: CalendarEvent]
   open: [event: CalendarEvent]
 }>()
@@ -124,7 +126,8 @@ defineExpose({ selectedDate, mode })
           <h3>{{ event.title }}</h3><p v-if="event.subtitle" class="event-subtitle">{{ event.subtitle }}</p>
           <dl><div v-for="field in event.fields" :key="field.label" :class="{ 'wide-field': ['系统单号', '完整时段', '预约备注'].includes(field.label) }"><dt>{{ field.label }}</dt><dd>{{ field.value || '—' }}</dd></div></dl>
           <AppointmentInboundCodes v-if="event.inboundCodes" :codes="event.inboundCodes" />
-          <footer v-if="event.canEdit || event.canDelete || event.sourcePath" class="density-actions">
+          <footer v-if="event.canView || event.canEdit || event.canDelete || event.sourcePath" class="density-actions">
+            <el-button v-if="event.canView" class="density-action" :disabled="loading" @click="emit('view', event)">查看预约</el-button>
             <el-button v-if="event.sourcePath" class="density-action" :disabled="loading" @click="emit('open', event)">查看来源</el-button>
             <el-button v-if="event.canEdit" class="density-action" :disabled="loading" @click="emit('edit', event)">编辑</el-button>
             <el-button v-if="event.canDelete" class="density-action" data-tone="danger" :disabled="loading" @click="emit('delete', event)">取消预约</el-button>