schmidt.florian
92438348e7
ci / build-test (push) Successful in 1m14s
Adds the "sum meter" the user asked for: a meter that doesn't physically exist but represents the sum of other meters in the flow view. - FlowService: a Virtual-mode meter has no readings of its own; its flow value is the sum of its upstream meters, resolved in topological order (so "Summe Solar" = Solar 1 + Solar 2, and Grid + Summe Solar → House with the remainder as "Other" = export / battery / inverter losses). - Meters editor: a hint when Mode = Virtual explaining the sum-meter behaviour. - Reference data seeds the full demo chain: Solar 1 + Solar 2 → Summe Solar; Netz + Summe Solar → Haus → Auto + Other — so /energy/1 shows a multi-level Sankey out of the box. - Fix: SankeyChart Unit was passed as the literal string "_graph.Unit" (missing @) so node labels read "_graph.Unit" instead of "kWh". Caught by screenshotting the live page. Test: Virtual_sum_meter_aggregates_its_upstreams. 69 Core + 50 Integration = 119 green. Live-verified with a browser screenshot of the multi-level flow. Claude-Session: https://claude.ai/code/session_01Lz2RqAsnQhetqWNoCDfexK