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

test/config.yaml

@@ -1,4 +1,6 @@
-age_recipient: age1xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+age_recipients:
+  - age1278m9q7dp3chsh2dcy82qk27v047zywyvtxwnj4cvt0z65jw6a7q5dqhfj  # sneak's long term age key
+  - age1otherpubkey...  # add additional recipients as needed
 source_dirs:
   - /tmp/vaultik-test-source
   - /var/test/data
@@ -20,8 +22,8 @@ backup_interval: 1h
 full_scan_interval: 24h
 min_time_between_run: 15m
 index_path: /tmp/vaultik-test.sqlite
-chunk_size: 10485760  # 10MB
-blob_size_limit: 10737418240  # 10GB
+chunk_size: 10MB
+blob_size_limit: 10GB
 index_prefix: index/
 compression_level: 3
 hostname: test-host