docs: document template naming and maintenance refactor

Update agent and LLM guidance to reference the architecture strategy and
add a template naming rule that keeps reusable abstractions domain-neutral.

Mark maintenance Phase 3 as complete and document the page driver/page
component refactors for EditableGrid and MasterDetail variants.docs: document template naming and maintenance refactor

Update agent and LLM guidance to reference the architecture strategy and
add a template naming rule that keeps reusable abstractions domain-neutral.

Mark maintenance Phase 3 as complete and document the page driver/page
component refactors for EditableGrid and MasterDetail variants.

src/components/maint/EditableGrid.vue

@@ -2,7 +2,7 @@
   <div class="d-flex flex-column">
     <v-card variant="flat">
       <v-card-title class="d-flex flex-wrap align-center py-0 ga-2">
-        <span class="text-h6">可編輯表格維護示範</span>
+        <span class="text-h6">{{ title }}</span>
         <v-chip :color="hasAnyChange ? 'warning' : 'success'" variant="tonal">
           {{ hasAnyChange ? '有未儲存變更' : '已同步' }}
         </v-chip>
@@ -377,6 +377,15 @@ import { computed, ref, watch } from 'vue'
 import ConfirmDialog from '@/components/maint/CommonConfirmDialog.vue'
 import { useEditableStudentGrid } from '@/composables/maint/useEditableStudentGrid'
 
+withDefaults(
+  defineProps<{
+    title?: string
+  }>(),
+  {
+    title: '可編輯表格維護示範',
+  }
+)
+
 const {
   departments,
   enrollYears,