Fix .gitignore: track cmd/ directories, add mdsync + server source

cmd/server/main.go

@@ -0,0 +1,73 @@
+package main
+
+import (
+	"fmt"
+	"log"
+	"net/http"
+	"os"
+
+	"github.com/google/uuid"
+
+	"markdownhub/internal/api"
+	"markdownhub/internal/auth"
+	"markdownhub/internal/db"
+	"markdownhub/internal/files"
+)
+
+func main() {
+	dataDir := envOr("MH_DATA_DIR", "./data")
+	port := envOr("MH_PORT", "8080")
+	secret := envOr("MH_SECRET", "dev-secret-change-me")
+
+	database, err := db.Open(dataDir + "/db/markdownhub.db")
+	if err != nil {
+		log.Fatalf("Failed to open database: %v", err)
+	}
+	defer database.Close()
+
+	if err := db.Migrate(database); err != nil {
+		log.Fatalf("Failed to run migrations: %v", err)
+	}
+
+	ensureAdminUser(database, dataDir)
+
+	router := api.NewRouter(database, dataDir, secret)
+
+	fmt.Printf("MarkdownHub listening on :%s\n", port)
+	log.Fatal(http.ListenAndServe(":"+port, router))
+}
+
+func ensureAdminUser(database *db.DB, dataDir string) {
+	var count int
+	database.QueryRow("SELECT COUNT(*) FROM users").Scan(&count)
+	if count > 0 {
+		return
+	}
+
+	email := envOr("MH_ADMIN_EMAIL", "admin@localhost")
+	password := envOr("MH_ADMIN_PASSWORD", "admin")
+
+	hash, err := auth.HashPassword(password)
+	if err != nil {
+		log.Fatalf("Failed to hash admin password: %v", err)
+	}
+
+	id := uuid.New().String()
+	_, err = database.Exec(
+		"INSERT INTO users (id, username, email, password_hash, is_admin) VALUES (?, ?, ?, ?, ?)",
+		id, "admin", email, hash, true,
+	)
+	if err != nil {
+		log.Fatalf("Failed to create admin user: %v", err)
+	}
+
+	files.EnsureUserDir(dataDir, id)
+	fmt.Printf("Created admin user: %s\n", email)
+}
+
+func envOr(key, fallback string) string {
+	if v := os.Getenv(key); v != "" {
+		return v
+	}
+	return fallback
+}