feat: закрыть остаточные P1/P2 по профилю, когорте и ведомости

- профиль приведён к docs/09: variant/level, updatedBy/name, лимит попыток
- V14: NOT NULL и полная уникальность когорты, preflight legacy-групп
- возврат группы из архива и история членства на странице группы
- пагинация групп и плоского списка материалов
- пакетные сдачи ведомости одним запросом
- XLSX-preflight импорта и audit-тесты ростера
- LDD: 66 claims, 398 тестов, release PASS

services/academic-service/src/main/kotlin/ru/ysu/lms/academic/content/ContentService.kt

@@ -359,24 +359,31 @@ class ContentService(
         articles.save(a)
     }
 
+    /** Плоский список материалов; [limit] = 0 — все записи (совместимость API). */
     @Transactional(readOnly = true)
-    fun listAll(): List<ContentArticleView> {
+    fun listAll(
+        offset: Int = 0,
+        limit: Int = 0,
+    ): List<ContentArticleView> {
         val chById = chapters.findAllByOrderByPositionAscIdAsc().associateBy { it.id }
         val secById = sections.findAllByOrderByPositionAscIdAsc().associateBy { it.id }
-        return articles.findAllByOrderByPositionAscIdAsc().mapNotNull { a ->
-            val sec = secById[a.sectionId] ?: return@mapNotNull null
-            val ch = chById[sec.chapterId] ?: return@mapNotNull null
-            ContentArticleView(
-                id = a.id.toString(),
-                chapterSlug = ch.slug,
-                chapterTitle = ch.title,
-                sectionSlug = sec.slug,
-                sectionTitle = sec.title,
-                slug = a.slug,
-                title = a.title,
-                bodyMd = a.bodyMd,
-            )
-        }
+        val all =
+            articles.findAllByOrderByPositionAscIdAsc().mapNotNull { a ->
+                val sec = secById[a.sectionId] ?: return@mapNotNull null
+                val ch = chById[sec.chapterId] ?: return@mapNotNull null
+                ContentArticleView(
+                    id = a.id.toString(),
+                    chapterSlug = ch.slug,
+                    chapterTitle = ch.title,
+                    sectionSlug = sec.slug,
+                    sectionTitle = sec.title,
+                    slug = a.slug,
+                    title = a.title,
+                    bodyMd = a.bodyMd,
+                )
+            }
+        if (limit <= 0) return all
+        return all.drop(offset.coerceAtLeast(0)).take(limit.coerceIn(1, MAX_ARTICLE_PAGE))
     }
 
     @Transactional
@@ -385,6 +392,10 @@ class ContentService(
         bytes: ByteArray,
         sync: Boolean = true,
     ): ContentImportResult = importer.importZip(filename, bytes, sync)
+
+    private companion object {
+        const val MAX_ARTICLE_PAGE = 500
+    }
 }
 
 /**

services/academic-service/src/main/kotlin/ru/ysu/lms/academic/controller/ContentAdminController.kt

@@ -158,7 +158,10 @@ class ContentAdminController(
     }
 
     @GetMapping("/articles")
-    fun list() = contentService.listAll()
+    fun list(
+        @RequestParam(defaultValue = "0") offset: Int,
+        @RequestParam(defaultValue = "0") limit: Int,
+    ) = contentService.listAll(offset, limit)
 
     @PostMapping("/chapters")
     fun createChapter(

services/academic-service/src/test/kotlin/ru/ysu/lms/academic/content/CourseContentIntegrationTest.kt

@@ -92,6 +92,21 @@ class CourseContentIntegrationTest {
             .build()
     }
 
+    @Test
+    fun `admin article list supports offset and limit`() {
+        repeat(3) { seedMaterial(courseId = null, published = true) }
+
+        val all = contentService.listAll()
+        assertThat(all.size).isGreaterThanOrEqualTo(3)
+        val first = contentService.listAll(offset = 0, limit = 2)
+        val second = contentService.listAll(offset = 2, limit = 1)
+
+        assertThat(first).hasSize(2)
+        assertThat(second).hasSize(1)
+        assertThat(first.map { it.id }).doesNotContainAnyElementsOf(second.map { it.id })
+        assertThat(contentService.listAll(offset = 0, limit = 0)).hasSize(all.size)
+    }
+
     @Test
     fun `anonymous tree contains only global chapters with ALL audience`() {
         val global = seedChapter(title = "Глобальная", courseId = null, audience = "ALL")