feat: Implement Compliance Academy E-Learning module (Phases 1-7)

Add complete Academy backend (Go) and frontend (Next.js) for DSGVO/IT-Security/AI-Literacy compliance training:
- Go backend: Course CRUD, enrollments, quiz evaluation, PDF certificates (gofpdf), video generation pipeline (ElevenLabs + HeyGen)
- In-memory data store with PostgreSQL migration for future DB support
- Frontend: Course creation (AI + manual), lesson viewer, interactive quiz, certificate viewer with PDF download
- Fix existing compile errors in generate.go (SearchResult type mismatch), llm/service.go (unused var), rag/service.go (Unicode chars)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

admin-v2/ai-compliance-sdk/cmd/server/main.go

@@ -96,6 +96,43 @@ func main() {
 		checkpointHandler := api.NewCheckpointHandler()
 		v1.GET("/checkpoints", checkpointHandler.GetAll)
 		v1.POST("/checkpoints/validate", checkpointHandler.Validate)
+
+		// Academy (Compliance E-Learning)
+		academyHandler := api.NewAcademyHandler(dbPool, llmService, ragService)
+		academy := v1.Group("/academy")
+		{
+			// Course CRUD
+			academy.GET("/courses", academyHandler.ListCourses)
+			academy.GET("/courses/:id", academyHandler.GetCourse)
+			academy.POST("/courses", academyHandler.CreateCourse)
+			academy.PUT("/courses/:id", academyHandler.UpdateCourse)
+			academy.DELETE("/courses/:id", academyHandler.DeleteCourse)
+
+			// Statistics
+			academy.GET("/statistics", academyHandler.GetStatistics)
+
+			// Enrollments
+			academy.GET("/enrollments", academyHandler.ListEnrollments)
+			academy.POST("/enrollments", academyHandler.EnrollUser)
+			academy.PUT("/enrollments/:id/progress", academyHandler.UpdateProgress)
+			academy.POST("/enrollments/:id/complete", academyHandler.CompleteEnrollment)
+
+			// Quiz
+			academy.POST("/lessons/:id/quiz", academyHandler.SubmitQuiz)
+
+			// Certificates
+			academy.POST("/enrollments/:id/certificate", academyHandler.GenerateCertificateEndpoint)
+			academy.GET("/certificates/:id", academyHandler.GetCertificate)
+			academy.GET("/certificates/:id/pdf", academyHandler.DownloadCertificatePDF)
+
+			// AI Course Generation
+			academy.POST("/courses/generate", academyHandler.GenerateCourse)
+			academy.POST("/lessons/:id/regenerate", academyHandler.RegenerateLesson)
+
+			// Video Generation
+			academy.POST("/courses/:id/generate-videos", academyHandler.GenerateVideos)
+			academy.GET("/courses/:id/video-status", academyHandler.GetVideoStatus)
+		}
 	}
 
 	// Create server