v0.78.0 - scenarios: what they do and why

scenarios-card: each row says what the scenario does and why, without a tap - the volume it sets on each channel (muted / vol N%, templates rendered now by Home Assistant), other options and targets, its conditions with their result (nested and/or spelled out, input_datetime by name), and a warning when another active scenario turns the same channel off (the off wins) or the channel is switched off. overview-card: active scenario chips add what they silence or turn down, conditions as tooltip.