v1.3.0

• ConfigEntryAuthFailed / ConfigEntryNotReady — async_setup_entry now raises proper
  HA exceptions instead of return False, enabling automatic credential re-prompt and retry UI.
• Options flow precedence fix — poll interval is now read from entry.options before
  entry.data, so a configured override is preserved after integration reload.
• Integration tests — 6 async tests with pytest-homeassistant-custom-component covering
  setup, auth failure, connection failure, unload, entity creation, and options reload.
• HTTP client edge-case tests — 14 new tests covering login failures, HTTP errors, unauthenticated
  calls, and ensure_authenticated; client.py coverage raised to 91%.
• HTML parser contract tests — 40 tests across 9 fixture files covering strategies A/B/C/D,
  EN/IT i18n, offline detection, parse errors, and all label resolution fallbacks; parsers.py at 100%.
• mypy gradual type checking — [tool.mypy] section in pyproject.toml; CI blocks on type errors.
• Extended ruff rules — added C4, PIE, RET, TC rule sets.
• CI Python matrix — validate.yml now runs on Python 3.11 and 3.12.
• Coverage gate — CI fails if total coverage drops below 85%.
• release.yml — automated GitHub Release on v*.*.* tags, with manifest version