feat: implementar Fase 2 del roadmap (Modo Replica Exacta / Mirroring)

backend/migrate_karens_replicator.py

@@ -0,0 +1,29 @@
+import sqlite3
+import os
+
+DB_PATH = os.path.join(os.path.dirname(__file__), "onever_drive.db")
+
+def migrate():
+    print(f"Connecting to {DB_PATH}...")
+    conn = sqlite3.connect(DB_PATH)
+    cursor = conn.cursor()
+    
+    columns_to_add = [
+        ("exclude_patterns", "VARCHAR(255) DEFAULT '' NOT NULL"),
+        ("skip_hidden", "BOOLEAN DEFAULT 0 NOT NULL"),
+        ("skip_system", "BOOLEAN DEFAULT 0 NOT NULL"),
+        ("skip_readonly", "BOOLEAN DEFAULT 0 NOT NULL")
+    ]
+    
+    for col_name, col_def in columns_to_add:
+        try:
+            cursor.execute(f"ALTER TABLE backup_jobs ADD COLUMN {col_name} {col_def}")
+            print(f"Column '{col_name}' added successfully to backup_jobs.")
+        except sqlite3.OperationalError as e:
+            print(f"Column '{col_name}' could not be added (maybe it already exists?): {e}")
+            
+    conn.commit()
+    conn.close()
+
+if __name__ == "__main__":
+    migrate()