Refactor blob storage to use UUID primary keys and implement streaming chunking

- Changed blob table to use ID (UUID) as primary key instead of hash
- Blob records are now created at packing start, enabling immediate chunk associations
- Implemented streaming chunking to process large files without memory exhaustion
- Fixed blob manifest generation to include all referenced blobs
- Updated all foreign key references from blob_hash to blob_id
- Added progress reporting and improved error handling
- Enforced encryption requirement for all blob packing
- Updated tests to use test encryption keys
- Added Cyrillic transliteration to README

internal/database/module.go

@@ -7,6 +7,7 @@ import (
 	"path/filepath"
 
 	"git.eeqj.de/sneak/vaultik/internal/config"
+	"git.eeqj.de/sneak/vaultik/internal/log"
 	"go.uber.org/fx"
 )
 
@@ -32,7 +33,13 @@ func provideDatabase(lc fx.Lifecycle, cfg *config.Config) (*DB, error) {
 
 	lc.Append(fx.Hook{
 		OnStop: func(ctx context.Context) error {
-			return db.Close()
+			log.Debug("Database module OnStop hook called")
+			if err := db.Close(); err != nil {
+				log.Error("Failed to close database in OnStop hook", "error", err)
+				return err
+			}
+			log.Debug("Database closed successfully in OnStop hook")
+			return nil
 		},
 	})