Lab editing and group grades

- academic-service: PUT /labs/{id} (title, deadline, defense, points, status,
  description), POST/PUT/DELETE variants endpoints
- progress-service: lab_grades table, POST/GET /api/v1/grades, GET /me/grades
- gateway: routes for /api/v1/assign and /api/v1/grades
- web: lab edit page (metadata + per-variant forms + add/delete variant)
- web: group page shows grades matrix per lab with editable score inputs
  and computed average column
- web: student dashboard renders statement via markdown, shows deadline

services/progress-service/src/main/kotlin/ru/ysu/lms/progress/Dtos.kt

@@ -1,6 +1,7 @@
 package ru.ysu.lms.progress
 
 import com.fasterxml.jackson.annotation.JsonIgnoreProperties
+import java.math.BigDecimal
 
 data class LevelAssignmentRequest(
     val studentId: String,
@@ -120,4 +121,16 @@ data class LabStudentsResponse(
 data class GroupAssignmentResponse(
     val groupName: String,
     val students: List<EnrichedAssignment>,
+)
+
+data class GradeSetRequest(
+    val studentId: String,
+    val labId: String,
+    val score: BigDecimal,
+)
+
+data class GradeResponse(
+    val studentId: String,
+    val labId: String,
+    val score: BigDecimal,
 )

services/progress-service/src/main/kotlin/ru/ysu/lms/progress/ProgressController.kt

@@ -64,4 +64,16 @@ class ProgressController(
         @RequestParam labId: UUID,
         @AuthenticationPrincipal jwt: Jwt,
     ): List<VariantAssignmentResponse> = service.assignmentsForLabEnriched(labId, jwt.tokenValue)
+
+    @PostMapping("/grades")
+    @PreAuthorize("hasAuthority('ROLE_ADMIN')")
+    fun setGrade(@Valid @RequestBody body: GradeSetRequest): GradeResponse = service.setGrade(body)
+
+    @GetMapping("/grades")
+    @PreAuthorize("hasAuthority('ROLE_ADMIN')")
+    fun listGrades(): List<GradeResponse> = service.listGrades()
+
+    @GetMapping("/me/grades")
+    fun myGrades(@AuthenticationPrincipal jwt: Jwt): List<GradeResponse> =
+        service.listGrades().filter { it.studentId == jwt.subject }
 }

services/progress-service/src/main/kotlin/ru/ysu/lms/progress/ProgressService.kt

@@ -2,17 +2,23 @@ package ru.ysu.lms.progress
 
 import org.springframework.stereotype.Service
 import org.springframework.transaction.annotation.Transactional
+import ru.ysu.lms.common.BadRequestException
+import ru.ysu.lms.progress.domain.LabGrade
+import ru.ysu.lms.progress.domain.LabGradeKey
 import ru.ysu.lms.progress.domain.StudentLabLevel
 import ru.ysu.lms.progress.domain.VariantAssignment
+import ru.ysu.lms.progress.repo.LabGradeRepository
 import ru.ysu.lms.progress.repo.StudentLabLevelRepository
 import ru.ysu.lms.progress.repo.VariantAssignmentRepository
 import ru.ysu.lms.progress.domain.StudentLabLevelKey
+import java.math.BigDecimal
 import java.util.UUID
 
 @Service
 class ProgressService(
     private val levels: StudentLabLevelRepository,
     private val assignments: VariantAssignmentRepository,
+    private val grades: LabGradeRepository,
     private val academic: AcademicClient,
     private val identity: IdentityClient,
 ) {
@@ -169,6 +175,22 @@ class ProgressService(
     fun getStudentAssignments(studentId: UUID): List<VariantAssignment> =
         assignments.findByStudentId(studentId)
 
+    @Transactional
+    fun setGrade(request: GradeSetRequest): GradeResponse {
+        if (request.score < BigDecimal.ZERO || request.score > BigDecimal("5")) {
+            throw BadRequestException("Оценка должна быть в диапазоне 0–5")
+        }
+        val key = LabGradeKey(UUID.fromString(request.studentId), UUID.fromString(request.labId))
+        val grade = grades.findById(key).orElseGet { LabGrade(studentId = key.studentId, labId = key.labId) }
+        grade.score = request.score
+        grades.save(grade)
+        return GradeResponse(request.studentId, request.labId, request.score)
+    }
+
+    @Transactional(readOnly = true)
+    fun listGrades(): List<GradeResponse> =
+        grades.findAllBy().map { GradeResponse(it.studentId.toString(), it.labId.toString(), it.score) }
+
     @Transactional(readOnly = true)
     fun getStudentAssignment(studentId: UUID, labId: UUID, token: String): MeAssignmentResponse? {
         val va = assignments.findByStudentIdAndLabId(studentId, labId) ?: return null

services/progress-service/src/main/kotlin/ru/ysu/lms/progress/domain/LabGrade.kt

@@ -0,0 +1,26 @@
+package ru.ysu.lms.progress.domain
+
+import jakarta.persistence.Column
+import jakarta.persistence.Entity
+import jakarta.persistence.Id
+import jakarta.persistence.IdClass
+import jakarta.persistence.Table
+import java.io.Serializable
+import java.math.BigDecimal
+import java.time.Instant
+import java.util.UUID
+
+@Entity
+@Table(name = "lab_grades")
+@IdClass(LabGradeKey::class)
+class LabGrade(
+    @Id @Column(nullable = false) var studentId: UUID = UUID(0, 0),
+    @Id @Column(nullable = false) var labId: UUID = UUID(0, 0),
+    @Column(nullable = false) var score: BigDecimal = BigDecimal.ZERO,
+    @Column(nullable = false) var updatedAt: Instant = Instant.now(),
+)
+
+data class LabGradeKey(
+    val studentId: UUID = UUID(0, 0),
+    val labId: UUID = UUID(0, 0),
+) : Serializable

services/progress-service/src/main/kotlin/ru/ysu/lms/progress/repo/LabGradeRepository.kt

@@ -0,0 +1,12 @@
+package ru.ysu.lms.progress.repo
+
+import org.springframework.data.jpa.repository.JpaRepository
+import ru.ysu.lms.progress.domain.LabGrade
+import ru.ysu.lms.progress.domain.LabGradeKey
+import java.util.UUID
+
+interface LabGradeRepository : JpaRepository<LabGrade, LabGradeKey> {
+    fun findAllBy(): List<LabGrade>
+    fun findByStudentId(studentId: UUID): List<LabGrade>
+    fun findByStudentIdAndLabId(studentId: UUID, labId: UUID): LabGrade?
+}

services/progress-service/src/main/resources/db/migration/V3__grades.sql

@@ -0,0 +1,9 @@
+-- Lab grades: one grade per student per lab.
+
+CREATE TABLE lab_grades (
+    student_id uuid        NOT NULL,
+    lab_id     uuid        NOT NULL,
+    score      numeric(4,1) NOT NULL,
+    updated_at timestamptz NOT NULL DEFAULT now(),
+    PRIMARY KEY (student_id, lab_id)
+);