Replace multiple boolean variables with a bitflag approach for tracking
required update operations in the patch_verge function. This improves
code maintainability and potentially performance by:
1. Using a single integer variable with bit operations instead of multiple booleans
2. Defining clear flags as enum variants for better code readability
3. Simplifying flag checks with bitwise operations
The UpdateFlags enum provides a clear and type-safe way to represent
different types of updates needed when patching Verge configuration.
