fix: Restore all files lost during destructive rebase

A previous `git pull --rebase origin main` dropped 177 local commits,
losing 3400+ files across admin-v2, backend, studio-v2, website,
klausur-service, and many other services. The partial restore attempt
(660295e2) only recovered some files.

This commit restores all missing files from pre-rebase ref 98933f5e
while preserving post-rebase additions (night-scheduler, night-mode UI,
NightModeWidget dashboard integration).

Restored features include:
- AI Module Sidebar (FAB), OCR Labeling, OCR Compare
- GPU Dashboard, RAG Pipeline, Magic Help
- Klausur-Korrektur (8 files), Abitur-Archiv (5+ files)
- Companion, Zeugnisse-Crawler, Screen Flow
- Full backend, studio-v2, website, klausur-service
- All compliance SDKs, agent-core, voice-service
- CI/CD configs, documentation, scripts

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

school-service/cmd/seed/main.go

@@ -0,0 +1,92 @@
+package main
+
+import (
+	"context"
+	"flag"
+	"fmt"
+	"log"
+	"os"
+	"time"
+
+	"github.com/google/uuid"
+	"github.com/jackc/pgx/v5/pgxpool"
+
+	"github.com/breakpilot/school-service/internal/seed"
+)
+
+func main() {
+	// Parse command line flags
+	teacherIDStr := flag.String("teacher-id", "", "Teacher UUID (required)")
+	dbURL := flag.String("db", "", "Database URL (or set DATABASE_URL env var)")
+	flag.Parse()
+
+	// Get database URL
+	databaseURL := *dbURL
+	if databaseURL == "" {
+		databaseURL = os.Getenv("DATABASE_URL")
+	}
+	if databaseURL == "" {
+		databaseURL = "postgres://postgres:postgres@localhost:5432/school_service?sslmode=disable"
+	}
+
+	// Get teacher ID
+	var teacherID uuid.UUID
+	if *teacherIDStr == "" {
+		// Use a default demo teacher ID if not provided
+		teacherID = uuid.MustParse("e9484ad9-32ee-4f2b-a4e1-d182e02ccf20")
+		log.Printf("Using default teacher ID: %s", teacherID)
+	} else {
+		var err error
+		teacherID, err = uuid.Parse(*teacherIDStr)
+		if err != nil {
+			log.Fatalf("Invalid teacher ID: %v", err)
+		}
+	}
+
+	// Connect to database
+	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Minute)
+	defer cancel()
+
+	config, err := pgxpool.ParseConfig(databaseURL)
+	if err != nil {
+		log.Fatalf("Unable to parse database URL: %v", err)
+	}
+
+	pool, err := pgxpool.NewWithConfig(ctx, config)
+	if err != nil {
+		log.Fatalf("Unable to connect to database: %v", err)
+	}
+	defer pool.Close()
+
+	// Test connection
+	if err := pool.Ping(ctx); err != nil {
+		log.Fatalf("Unable to ping database: %v", err)
+	}
+
+	fmt.Println("==============================================")
+	fmt.Println("  School Service - Seed Data Generator")
+	fmt.Println("==============================================")
+	fmt.Printf("Teacher ID: %s\n", teacherID)
+	fmt.Printf("Database:   %s\n", databaseURL)
+	fmt.Println()
+
+	// Run seeder
+	seeder := seed.NewSeeder(pool, teacherID)
+	if err := seeder.SeedAll(ctx); err != nil {
+		log.Fatalf("Seeding failed: %v", err)
+	}
+
+	fmt.Println()
+	fmt.Println("==============================================")
+	fmt.Println("  Seed Data Generation Complete!")
+	fmt.Println("==============================================")
+	fmt.Println()
+	fmt.Println("Created:")
+	fmt.Println("  - 3 School Years (2022/23, 2023/24, 2024/25)")
+	fmt.Println("  - 6 Classes per year (5a, 5b, 6a, 6b, 7a, 7b)")
+	fmt.Println("  - 15-25 Students per class")
+	fmt.Println("  - 10 Subjects")
+	fmt.Println("  - Exam results with realistic grade distribution")
+	fmt.Println("  - Attendance records")
+	fmt.Println()
+}