v2.3.0-beta.2 – SOC % unit, bounds fix, plug helper refactor

v2.3.0-beta.2 – Pre-release for testing

Supersedes beta.1. Enable "Show beta versions" in HACS → Integrations → Jackery SolarVault → (gear icon) to install.

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Fixed

• SOC Charge Limit slider range corrected to 50–100 % (was 0–100 %; values below 50 % were silently ignored by device)
• SOC Discharge Limit slider range corrected to 5–49 % (was 0–100 %; values above 49 % were silently ignored by device)
• Smart plug switch creation filter tightened: only devType=6 creates switches (previous check was too broad)

Added

• Percentage unit on SOC sliders: SOC Charge Limit, SOC Discharge Limit and SOC Force Charge now show the % unit in the HA UI (closes #16)
• Dynamic SOC limit bounds: Slider min/max update automatically when device reports minSocChg/maxSocChg/minSocDischg/maxSocDischg

Refactored

• Plug helper functions moved from switch.py to sensor.py as shared public exports

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Test coverage: 87 tests, 53.88 % coverage