RoomFlow v0.0.66

Each _start_hold_dim tick read the light's current brightness from
hass.states and stepped from there. Plejd only reports a new brightness
seconds after a write, so every tick recomputed from the same stale
value and re-sent the same target: a 4s hold on vardagsrum_taklampa
moved it 255 -> 245 and stopped. The ramp now takes the brightness once
at the start of the hold and keeps a running level.

HOLD_DIM_INTERVAL_SECONDS goes from 0.05 to 0.15 so a full sweep takes
~4s (was ~1.3s once the ramp really moves) and the mesh gets ~7 writes/s
instead of ~20.

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Installation

HACS: Integrations → ⋮ → Custom repositories → add this repo as an Integration → search RoomFlow → install → restart Home Assistant.
Manual: download roomflow.zip below and extract it to your custom_components/ folder.

Full Changelog: v0.0.65...v0.0.66