feat(security): add BeforeHandle hook for auth checks after model resolution

- Implement BeforeHandle hook to enforce authentication based on model rules.
- Integrate with existing security mechanisms to allow or deny access.
- Update documentation to reflect new hook and its usage.

pkg/resolvespec/README.md

@@ -644,6 +644,7 @@ handler.Hooks().Register(resolvespec.BeforeCreate, func(ctx *resolvespec.HookCon
     CreatedAt time.Time `json:"created_at"`
     Tags      []Tag     `json:"tags,omitempty" gorm:"many2many:post_tags"`
 }
+
 // Schema.Table format
 handler.registry.RegisterModel("core.users", &User{})
 handler.registry.RegisterModel("core.posts", &Post{})
@@ -654,11 +655,13 @@ handler.Hooks().Register(resolvespec.BeforeCreate, func(ctx *resolvespec.HookCon
 ```go
 package main
 
+import (
     "log"
     "net/http"
 
     "github.com/bitechdev/ResolveSpec/pkg/resolvespec"
     "github.com/gorilla/mux"
+    "gorm.io/driver/postgres"
     "gorm.io/gorm"
 )
 

pkg/resolvespec/handler.go

@@ -138,6 +138,26 @@ func (h *Handler) Handle(w common.ResponseWriter, r common.Request, params map[s
 	validator := common.NewColumnValidator(model)
 	req.Options = validator.FilterRequestOptions(req.Options)
 
+	// Execute BeforeHandle hook - auth check fires here, after model resolution
+	beforeCtx := &HookContext{
+		Context:   ctx,
+		Handler:   h,
+		Schema:    schema,
+		Entity:    entity,
+		Model:     model,
+		Writer:    w,
+		Request:   r,
+		Operation: req.Operation,
+	}
+	if err := h.hooks.Execute(BeforeHandle, beforeCtx); err != nil {
+		code := http.StatusUnauthorized
+		if beforeCtx.AbortCode != 0 {
+			code = beforeCtx.AbortCode
+		}
+		h.sendError(w, code, "unauthorized", beforeCtx.AbortMessage, err)
+		return
+	}
+
 	switch req.Operation {
 	case "read":
 		h.handleRead(ctx, w, id, req.Options)

pkg/resolvespec/hooks.go

@@ -12,6 +12,10 @@ import (
 type HookType string
 
 const (
+	// BeforeHandle fires after model resolution, before operation dispatch.
+	// Use this for auth checks that need model rules and user context simultaneously.
+	BeforeHandle HookType = "before_handle"
+
 	// Read operation hooks
 	BeforeRead HookType = "before_read"
 	AfterRead  HookType = "after_read"
@@ -43,6 +47,9 @@ type HookContext struct {
 	Writer  common.ResponseWriter
 	Request common.Request
 
+	// Operation being dispatched (e.g. "read", "create", "update", "delete")
+	Operation string
+
 	// Operation-specific fields
 	ID     string
 	Data   interface{} // For create/update operations

pkg/resolvespec/security_hooks.go

@@ -2,6 +2,7 @@ package resolvespec
 
 import (
 	"context"
+	"net/http"
 
 	"github.com/bitechdev/ResolveSpec/pkg/common"
 	"github.com/bitechdev/ResolveSpec/pkg/logger"
@@ -10,6 +11,17 @@ import (
 
 // RegisterSecurityHooks registers all security-related hooks with the handler
 func RegisterSecurityHooks(handler *Handler, securityList *security.SecurityList) {
+	// Hook 0: BeforeHandle - enforce auth after model resolution
+	handler.Hooks().Register(BeforeHandle, func(hookCtx *HookContext) error {
+		if err := security.CheckModelAuthAllowed(newSecurityContext(hookCtx), hookCtx.Operation); err != nil {
+			hookCtx.Abort = true
+			hookCtx.AbortMessage = err.Error()
+			hookCtx.AbortCode = http.StatusUnauthorized
+			return err
+		}
+		return nil
+	})
+
 	// Hook 1: BeforeRead - Load security rules
 	handler.Hooks().Register(BeforeRead, func(hookCtx *HookContext) error {
 		secCtx := newSecurityContext(hookCtx)