# Task 15: Create CHANGELOG and Final Verification - Report

## Status: DONE_WITH_CONCERNS

## What Was Done

### CHANGELOG.md Created
Created `CHANGELOG.md` documenting all v0.5.0 changes following Keep a Changelog format. Committed as `7594a47`.

## Verification Results

### pytest: ✅ PASS
- **200/200 tests passed**
- Coverage: 94%
- Command: `py -m pytest tests/ -v --cov=aiopulse`

### mypy: ⚠️ NOT AVAILABLE
- mypy is not installed in the system Python or the venv
- Cannot verify type checking

### ruff: ⚠️ 53 ERRORS
- Command: `py -m ruff check .`
- **32 fixable** with `--fix`
- Breakdown by error type:
  - **I001** (import sorting): 12 occurrences across library and test files
  - **E501** (line too long >88): 22 occurrences, mostly in test docstrings and test code
  - **F401** (unused imports): 6 occurrences in test files
  - **UP032** (use f-string): 8 occurrences in `room.py`, `scene.py`, `demo.py`
  - **UP035** (collections.abc): 1 in `demo.py`
  - **UP045** (X | None): 1 in `demo.py`
  - **N818** (exception naming): 1 in `errors.py` (`HubBaseException` → should end with `Error`)

### Concerns

1. **mypy not installed**: Cannot verify type checking passes. Needs to be installed separately.
2. **ruff errors**: 53 errors exist. Most are pre-existing (line length in tests, import sorting, unused imports in tests, demo.py modernization). The library source files (`aiopulse/`) have relatively few issues (I001 in 4 files, UP032 in 2 files, N818 in 1 file). The task brief expected "No errors" for ruff but the modernization scope didn't include fixing all pre-existing lint issues.
3. **Exception naming (N818)**: `HubBaseException` would need renaming to `HubBaseError` which is a breaking API change.

## Commit

- `7594a47` - docs: add changelog for v0.5.0 release
