[bkonick]

The Laps, Race Control, and Standings dashboards derive the hidden race_from / race_to variables from the selected race. When no race is selected — e.g. a fresh local stack with an empty races table — those queries returned no row, the variables were empty, and every panel filtering on time >= ${race_from}ms failed with invalid operation: time and *influxql.VarRef are not compatible.

Both queries now aggregate with max() so they always return one row: race_from falls back to 0 and race_to to now. With no race selected, the panels show "No data" instead of an error. For a selected race the values are unchanged, including now for a race with no end_time yet.

Verified against the local stack: the new and old SQL return identical values for a finished race and an open race, and every race-dependent panel across the three dashboards now queries without error when no race exists.

🤖 Generated with Claude Code

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