Initial commit: TaskPool React panel

- React frontend with route-level code splitting
- Backend rebranded from Baihu to TaskPool
- DB brand migration script and local compatibility

internal/models/big_text.go

@@ -0,0 +1,24 @@
+package models
+
+import (
+	"gorm.io/gorm"
+	"gorm.io/gorm/schema"
+)
+
+// BigText 自定义大数据文本类型，自动处理跨数据库类型差异
+// MySQL: LONGTEXT (4GB)
+// PostgreSQL: TEXT
+// SQLite: TEXT
+type BigText string
+
+func (BigText) GormDBDataType(db *gorm.DB, field *schema.Field) string {
+	switch db.Dialector.Name() {
+	case "mysql":
+		return "LONGTEXT"
+	case "postgres":
+		return "TEXT"
+	case "sqlite":
+		return "TEXT"
+	}
+	return "TEXT"
+}