feat: Complete professional cleanup with full functionality

- All 24 tests passing including edge cases
- Fix encryption config storage and retrieval mechanism
- Maintain complete brainy functionality during cleanup
- Professional open source repository ready for 1.2.0 release
- Zero commercial content contamination
- Robust protection systems in place

models/Xenova/all-MiniLM-L6-v2/tokenizer_config.json

@@ -0,0 +1,15 @@
+{
+  "clean_up_tokenization_spaces": true,
+  "cls_token": "[CLS]",
+  "do_basic_tokenize": true,
+  "do_lower_case": true,
+  "mask_token": "[MASK]",
+  "model_max_length": 512,
+  "never_split": null,
+  "pad_token": "[PAD]",
+  "sep_token": "[SEP]",
+  "strip_accents": null,
+  "tokenize_chinese_chars": true,
+  "tokenizer_class": "BertTokenizer",
+  "unk_token": "[UNK]"
+}