feat: add tenant and user management with migrations, handlers, and tests

- Implemented tenant and user management features including:
  - Tenant creation and management with associated migrations.
  - User creation and management with associated migrations.
  - Tenant membership management with associated migrations.
  - Platform user roles management with associated migrations.
  - Quota management with associated migrations.
  - Article and template management with associated migrations.
- Added HTTP handlers for templates and workspaces.
- Created tests for protected and public routes.
- Introduced a script to check tenant scope in SQL queries.
- Documented task plan for backend completion and frontend foundation.

server/internal/shared/middleware/recovery.go

@@ -0,0 +1,30 @@
+package middleware
+
+import (
+	"net/http"
+	"runtime/debug"
+
+	"github.com/gin-gonic/gin"
+	"go.uber.org/zap"
+)
+
+func Recovery(logger *zap.Logger) gin.HandlerFunc {
+	return func(c *gin.Context) {
+		defer func() {
+			if r := recover(); r != nil {
+				logger.Error("panic recovered",
+					zap.Any("error", r),
+					zap.String("stack", string(debug.Stack())),
+					zap.String("request_id", RequestIDFromGin(c)),
+				)
+				c.AbortWithStatusJSON(http.StatusInternalServerError, gin.H{
+					"code":       50000,
+					"message":    "internal_error",
+					"detail":     "An unexpected error occurred",
+					"request_id": RequestIDFromGin(c),
+				})
+			}
+		}()
+		c.Next()
+	}
+}