feat(admin): initialize procurement service skeleton

admin/internal/storage/sqlite/sqlite.go

@@ -0,0 +1,13 @@
+// Package sqlite 提供采购服务的 SQLite 驱动注册。
+package sqlite
+
+import (
+	"database/sql"
+
+	_ "github.com/mattn/go-sqlite3"
+)
+
+// Open 打开 SQLite 数据源；调用方负责其 schema 与生命周期。
+func Open(dataSourceName string) (*sql.DB, error) {
+	return sql.Open("sqlite3", dataSourceName)
+}

admin/internal/storage/sqlite/sqlite_test.go

@@ -0,0 +1,24 @@
+package sqlite_test
+
+import (
+	"context"
+	"testing"
+
+	"cmbuyer/admin/internal/storage/sqlite"
+)
+
+func TestOpen(t *testing.T) {
+	database, err := sqlite.Open(":memory:")
+	if err != nil {
+		t.Fatalf("open SQLite database: %v", err)
+	}
+	t.Cleanup(func() {
+		if err := database.Close(); err != nil {
+			t.Errorf("close SQLite database: %v", err)
+		}
+	})
+
+	if err := database.PingContext(context.Background()); err != nil {
+		t.Fatalf("ping SQLite database: %v", err)
+	}
+}