diff --git a/internal/config/model.go b/internal/config/model.go
index f1708f4..8b41df8 100644
--- a/internal/config/model.go
+++ b/internal/config/model.go
@@ -5,15 +5,12 @@ import "time"
 // ConfigEntry stores runtime-tunable configuration in the database.
 // Values are stored as strings but helpers exist for ints/bools/durations.
 //
-// NOTE: keep keys stable; they are effectively part of the public admin surface.
-//
 // Example keys:
 // - upload.max_file_size_bytes
 // - upload.multi.max_files
 // - upload.max_hours
 // - ratelimit.login.per_minute
 // - ratelimit.api.per_minute
-//
 type ConfigEntry struct {
 	Key       string `gorm:"primaryKey;size:128"`
 	Value     string `gorm:"size:2048"`
diff --git a/internal/config/repository.go b/internal/config/repository.go
index b836c5e..4f5cfb1 100644
--- a/internal/config/repository.go
+++ b/internal/config/repository.go
@@ -19,7 +19,6 @@ func (r *Repository) Get(key string) (*ConfigEntry, error) {
 }
 
 func (r *Repository) Upsert(key, value string) error {
-	// Prefer a simple approach that works across sqlite/postgres/mysql.
 	// Try update first, then insert if nothing updated.
 	res := r.db.Model(&ConfigEntry{}).Where("key = ?", key).Update("value", value)
 	if res.Error != nil {