feat(ai): integrate local Ollama AI for in-context sentence translation and caching (Task 13)

.gitignore

@@ -6,13 +6,17 @@ __pycache__/
 venv/
 ENV/
 
-# Database
+# Database & Local Data
 *.sqlite3
 *.sqlite
 *.db
 *.db-journal
 *.db-wal
 *.db-shm
+data/ollama/
+data/*.db
+data/*.db-wal
+data/*.db-shm
 
 # Environment & Secret variables
 .env