docs(changelog): add Unreleased entry; update test count 697→698, statements 2007→2008

Author: t0kubetsu

CHANGELOG.md

@@ -9,6 +9,13 @@ Version numbers follow [Semantic Versioning](https://semver.org/spec/v2.0.0.html
 
 ## [Unreleased]
 
+### Changed
+- `__init__`: added `NullHandler` on the `"mailvalidator"` logger so library
+  users do not see spurious "No handler found" warnings (consistent with all
+  other platform modules).
+- CLI: internal variable `as_json` renamed to `json_output` across all
+  sub-commands, aligning with the platform-wide naming convention.
+
 ---
 
 ## [0.1.6] — 2026-04-30

CLAUDE.md

@@ -86,7 +86,7 @@ pytest tests/checks/test_spf.py -v
 
 - Test runner: `pytest` (auto-configured via `pyproject.toml`)
 - Coverage flag already wired: `--cov=mailvalidator --cov-report=term-missing`
-- **Current state: 697 tests, 100% coverage** across all 19 modules (2 007 statements)
+- **Current state: 698 tests, 100% coverage** across all 19 modules (2 008 statements)
 - Shared fixtures in `tests/conftest.py` — use `make_tls()`, `make_mx_result()`,
   `console_capture()`, `make_simple_result()`, `make_rsa_cert_der()`,
   `make_ec_cert_der()` rather than building objects by hand

README.md

@@ -14,7 +14,7 @@ $ mailvalidator check example.com
 ```
 
 ![Python](https://img.shields.io/badge/python-%3E%3D3.11-blue)
-![Tests](https://img.shields.io/badge/tests-697%20passing-brightgreen)
+![Tests](https://img.shields.io/badge/tests-698%20passing-brightgreen)
 ![Coverage](https://img.shields.io/badge/coverage-100%25-brightgreen)
 ![License](https://img.shields.io/badge/license-GPLv3-lightgrey)
 
@@ -402,7 +402,7 @@ pytest tests/checks/test_smtp.py -v
 pytest tests/checks/test_spf.py::TestSPFCoverage -v
 ```
 
-The test suite has **697 tests** and achieves **100% coverage** (2 007
+The test suite has **698 tests** and achieves **100% coverage** (2 008
 statements) across all modules. Coverage reporting is pre-configured in
 `pyproject.toml` — no extra flags needed.