Complete UI Overhaul - fix path

🎉 v1.5.2 – Patch Release

This release fixes two issues reported by the community after the v1.5.0 UI overhaul.

🐛 Bug Fixes

1. Mains‑powered nodes no longer show a misleading 0 % battery
   Nodes that are permanently powered via USB or mains and report 0 V / 0 % now display a clean “Mains powered” indicator with a plug icon, instead of a red 0 % battery bar. This removes the false low‑battery warning for wired repeaters.

2. Hub card now shows the correct device name
   The hub name is now taken from the Home Assistant device registry (name_by_user or name) or from the entity’s friendly_name, rather than being reconstructed from the entity ID. Hubs with custom names (e.g. “SaarMesh.de HASS”) now appear correctly, instead of being shown as a mangled string like “Saarmesh de pi5”.

✨ Improvements

• Added Hub software version
• Added caching for hub and node discovery – reduces repeated work and improves dashboard performance.
• Introduced a global neighbours index – much faster neighbour lookups when multiple cards are on the dashboard.

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