Phase 1: database schema, migrations, repository, user seeding

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

cmd/server/main.go

@@ -6,6 +6,7 @@ import (
 	"net/http"
 	"os"
 	"os/signal"
+	"path/filepath"
 	"syscall"
 	"time"
 
@@ -13,6 +14,7 @@ import (
 	"github.com/go-chi/chi/v5/middleware"
 
 	"qbank/internal/config"
+	"qbank/internal/db"
 )
 
 func main() {
@@ -21,6 +23,25 @@ func main() {
 	logger := slog.New(slog.NewJSONHandler(os.Stdout, nil))
 	slog.SetDefault(logger)
 
+	if err := os.MkdirAll(cfg.DataDir, 0755); err != nil {
+		slog.Error("create data dir", "err", err)
+		os.Exit(1)
+	}
+
+	database, err := db.Open(filepath.Join(cfg.DataDir, "qbank.db"))
+	if err != nil {
+		slog.Error("open database", "err", err)
+		os.Exit(1)
+	}
+	defer database.Close()
+
+	if err := db.Seed(database, cfg.AdminUsers); err != nil {
+		slog.Error("seed users", "err", err)
+		os.Exit(1)
+	}
+
+	_ = db.New(database) // repo will be wired into handlers in later phases
+
 	r := chi.NewRouter()
 	r.Use(middleware.RequestID)
 	r.Use(requestLogger(logger))