[log] Add debug logging to guard registry

internal/guard/registry.go

@@ -4,8 +4,12 @@ import (
 	"fmt"
 	"log"
 	"sync"
+
+	"github.com/githubnext/gh-aw-mcpg/internal/logger"
 )
 
+var debugLog = logger.New("guard:registry")
+
 // Registry manages guard instances for different MCP servers
 type Registry struct {
 	guards map[string]Guard // serverID -> guard
@@ -14,13 +18,15 @@ type Registry struct {
 
 // NewRegistry creates a new guard registry
 func NewRegistry() *Registry {
+	debugLog.Print("Creating new guard registry")
 	return &Registry{
 		guards: make(map[string]Guard),
 	}
 }
 
 // Register registers a guard for a specific server
 func (r *Registry) Register(serverID string, guard Guard) {
+	debugLog.Printf("Registering guard for serverID=%s, guardName=%s", serverID, guard.Name())
 	r.mu.Lock()
 	defer r.mu.Unlock()
 
@@ -30,14 +36,17 @@ func (r *Registry) Register(serverID string, guard Guard) {
 
 // Get retrieves the guard for a server, or returns a noop guard if not found
 func (r *Registry) Get(serverID string) Guard {
+	debugLog.Printf("Getting guard for serverID=%s", serverID)
 	r.mu.RLock()
 	defer r.mu.RUnlock()
 
 	if guard, ok := r.guards[serverID]; ok {
+		debugLog.Printf("Found guard for serverID=%s, guardName=%s", serverID, guard.Name())
 		return guard
 	}
 
 	// Return noop guard as default
+	debugLog.Printf("No guard registered for serverID=%s, returning noop guard", serverID)
 	log.Printf("[Guard] No guard registered for server '%s', using noop guard", serverID)
 	return NewNoopGuard()
 }
@@ -52,6 +61,7 @@ func (r *Registry) Has(serverID string) bool {
 
 // Remove removes a guard registration
 func (r *Registry) Remove(serverID string) {
+	debugLog.Printf("Removing guard for serverID=%s", serverID)
 	r.mu.Lock()
 	defer r.mu.Unlock()
 	delete(r.guards, serverID)
@@ -100,19 +110,23 @@ func RegisterGuardType(name string, factory GuardFactory) {
 
 // CreateGuard creates a guard instance by name using registered factories
 func CreateGuard(name string) (Guard, error) {
+	debugLog.Printf("Creating guard with name=%s", name)
 	registeredGuardsMu.RLock()
 	defer registeredGuardsMu.RUnlock()
 
 	// Handle built-in guards
 	if name == "noop" || name == "" {
+		debugLog.Print("Using built-in noop guard")
 		return NewNoopGuard(), nil
 	}
 
 	// Try to find in registered factories
 	if factory, ok := registeredGuards[name]; ok {
+		debugLog.Printf("Found factory for guard type: %s", name)
 		return factory()
 	}
 
+	debugLog.Printf("Unknown guard type: %s", name)
 	return nil, fmt.Errorf("unknown guard type: %s", name)
 }