# Task 2 Report: Update Errors Module with Context

## Status: DONE

## What I Implemented

Added optional `response: bytes | None` parameter to `HubBaseException.__init__()`, which propagates to all subclasses (`NotConnectedException`, `NotRunningException`, `CannotConnectException`, `InvalidResponseException`). Also added `from __future__ import annotations` for the `bytes | None` union syntax.

## Files Changed

- `aiopulse/errors.py` — Added `__init__` with `response` parameter to `HubBaseException`
- `tests/test_errors.py` — Added test classes: `TestHubBaseException`, `TestInvalidResponseException`, `TestNotConnectedException`, `TestCannotConnectException`, `TestNotRunningException`

## What I Tested

- Ran `python -m pytest tests/test_errors.py -v` → **13/13 passing**
- Ran `python -m pytest tests/ -v` → **160/161 passing** (1 pre-existing failure in `test_hub.py::TestHubDiscover::test_discover_with_hub` — unrelated to this task)

## Commits

- `1eca8d3` — `feat: add response context to exception classes`

## Self-Review Findings

None. Implementation matches the task spec exactly. All tests pass. The one pre-existing failure (`test_discover_with_hub`) is unrelated to this change.

## Concerns

None.
