The cache returns mutable data structures (dictionaries and lists) directly without copying. This means callers can inadvertently modify the cached data, affecting subsequent calls.

[DYAI2025]

The cache returns mutable data structures (dictionaries and lists) directly without copying. This means callers can inadvertently modify the cached data, affecting subsequent calls.

For example:

session1 = bridge.get_current_session()
session1["patterns"].append({"new": "pattern"})  # Modifies cache!
session2 = bridge.get_current_session()  # Returns modified data

Consider returning deep copies of cached data to prevent unintended mutations:

import copy
return copy.deepcopy(entry["data"])

Originally posted by @Copilot in #17 (comment)