fix(client): raise AttributeError, not KeyError, for missing dunders

[bluetoothbot]

What: ONVIFService.__getattr__ now raises AttributeError for missing dunders instead of KeyError.

Why: __getattr__ only runs after normal attribute lookup fails, so the old return self.__dict__[name] always raised KeyError. Python's data model requires AttributeError here — a KeyError escapes hasattr() and the 3-arg getattr(obj, name, default) fallback (both only suppress AttributeError), and it breaks copy.deepcopy(), which probes __deepcopy__ on the instance:

copy.deepcopy(service)                 # KeyError -> AttributeError (now works)
hasattr(service, "__deepcopy__")       # KeyError -> False
getattr(service, "__deepcopy__", None) # KeyError -> None

How: Replaced return self.__dict__[name] with raise AttributeError(name), keeping the original intent (don't proxy dunder access to the ONVIF operation dispatcher). Updated the test that pinned the old KeyError behavior and added coverage for the stdlib protocols above.

Testing: pytest (256 passed), ruff check clean.

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Quality Report

Changes: 87 files changed, 9581 insertions(+), 1475 deletions(-)

Code scan: 20 issue(s) found

• README.rst:61 — debug print statement
• README.rst:111 — debug print statement
• examples/events.py:20 — debug print statement
• examples/events.py:24 — debug print statement
• examples/events.py:25 — debug print statement
• examples/events.py:27 — debug print statement
• examples/events.py:29 — debug print statement
• examples/events.py:62 — debug print statement
• examples/events.py:74 — debug print statement
• examples/events.py:84 — debug print statement

Tests: failed (FAILED)

Branch hygiene: clean

Generated by Kōan

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

Files with missing lines	Coverage Δ
onvif/client.py	100.00% <100.00%> (ø)

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