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hemna
c975dd85d8
stats() had a bare 'return self.data' on the first line that:
- returned the raw internal dict without holding self.lock (race condition)
- made the locked loop below unreachable dead code
- returned the wrong shape (callers expect age/old/packet/last keys, not
the raw was_old_before_update internal key)
Remove the early return so the existing with self.lock: loop executes.
Tests added (tests/packets/test_watch_list.py):
- test_stats_empty: empty watch list returns {}
- test_stats_returns_enriched_shape: verifies the four expected keys are
present and the raw-internal 'was_old_before_update' key is absent
- test_stats_not_raw_internal_dict: returned dict must not be wl.data itself
- setUp/tearDown: reset class-level data and initialized to prevent leakage
Closes #237