chore: consolidate local integration changes

backend/internal/domain/identity_cache.go

@@ -0,0 +1,19 @@
+package domain
+
+import "time"
+
+type IdentityCacheStatus struct {
+	Status          string     `json:"status"`
+	RedisReady      bool       `json:"redisReady"`
+	ObservedCount   int64      `json:"observedCount"`
+	KeyCount        int64      `json:"keyCount"`
+	LastRefreshedAt *time.Time `json:"lastRefreshedAt,omitempty"`
+	LastError       string     `json:"lastError,omitempty"`
+	UpdatedAt       *time.Time `json:"updatedAt,omitempty"`
+}
+
+type IdentityCacheFlushResult struct {
+	Status      string    `json:"status"`
+	FlushedKeys int64     `json:"flushedKeys"`
+	UpdatedAt   time.Time `json:"updatedAt"`
+}