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/pages/PageEditableGridMaintenance.vue

@@ -0,0 +1,12 @@
+<script setup lang="ts">
+import EditableStudentGrid from '@/components/maint/EditableGrid.vue'
+import type { MaintenancePageModel } from '@/models/page'
+
+defineProps<{
+  page: MaintenancePageModel
+}>()
+</script>
+
+<template>
+  <EditableStudentGrid :title="page.title" />
+</template>