Fix learn dialog rendering, add lab publish/draft toggle, bump to v0.1.2

- learn/index.html: restructured dialogs inside section divs to fix scope
- learn/index.html: edit-article dialogs via flat articles list in modal blocks
- LearnController: sectionChoices for select options; secure article fetching
- ContentService: createArticlePlaced: new section adjacent to anchor section
- lab status: published = student-visible, draft = hidden
- lab toggle: click badge in labs list or button in lab header to switch status
- added badge-btn CSS class, removed inline styles
- removed all th:onclick with expressions → data-modal attributes
- footer v0.1.2

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

@@ -231,6 +231,13 @@ class ContentService(
     fun createArticlePlaced(title: String, bodyMd: String, chapterId: UUID?, newChapterTitle: String?,
                             sectionId: UUID?, newSectionTitle: String?): ContentArticleView {
         val targetSection: ContentSection = when {
+            sectionId != null && !newSectionTitle.isNullOrBlank() -> {
+                val anchor = sections.findById(sectionId)
+                    .orElseThrow { NotFoundException("Раздел не найден") }
+                val node = createSection(anchor.chapterId, newSectionTitle, null)
+                sections.findById(UUID.fromString(node.id))
+                    .orElseThrow { NotFoundException("Раздел не найден") }
+            }
             sectionId != null -> sections.findById(sectionId)
                 .orElseThrow { NotFoundException("Раздел не найден") }
             !newSectionTitle.isNullOrBlank() -> {

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

@@ -55,6 +55,12 @@ class LabController(private val labService: LabService) {
     fun deleteVariant(@PathVariable id: UUID, @PathVariable variantId: UUID): LabDetail =
         labService.deleteVariant(id, variantId)
 
+    @PostMapping("/{id}/toggle-status")
+    @PreAuthorize("hasAuthority('ROLE_ADMIN')")
+    fun toggleStatus(@PathVariable id: UUID) {
+        labService.toggleStatus(id)
+    }
+
     @PostMapping
     @PreAuthorize("hasAuthority('ROLE_ADMIN')")
     fun create(@Valid @RequestBody body: LabCreateRequest): LabDetail = labService.create(body)

services/academic-service/src/main/kotlin/ru/ysu/lms/academic/lab/LabService.kt

@@ -257,10 +257,10 @@ class LabService(
         return detail(labId)
     }
 
-    @Transactional
+@Transactional
     fun addLevel(labId: UUID, request: LevelSaveRequest) {
         val lab = labs.findById(labId).orElseThrow { NotFoundException("Лабораторная не найдена") }
-        if (request.code.isNullOrBlank()) throw BadRequestException("Код уровня не может быть пустым")
+        if (request.code.isBlank()) throw BadRequestException("Код уровня не может быть пустым")
         val existing = labLevels.findByLabIdOrderByPosition(labId)
         labLevels.save(
             LabLevel(
@@ -273,6 +273,13 @@ class LabService(
         )
     }
 
+    @Transactional
+    fun toggleStatus(labId: UUID) {
+        val lab = labs.findById(labId).orElseThrow { NotFoundException("Лабораторная не найдена") }
+        lab.status = if (lab.status == "published") "draft" else "published"
+        labs.save(lab)
+    }
+
     private fun findOrCreateSemester(title: String, year: Int): Semester {
         semesters.findFirstByActiveTrue()?.let { return it }
         val t = title.ifBlank { "осень" }