ghost 894d705e83 perf(dashboard): streamline investment activity totals (#2257) ...

* perf(dashboard): streamline investment activity totals

* fix(dashboard): skip empty investment totals cache writes

Short-circuit empty investment account totals before cache fetch and move the new SQL query capture regression helper into test/support.

* refactor(dashboard): address review on investment totals query

- Drop defensive ArgumentError guards in InvestmentStatement::Totals#initialize.
  The sole caller (totals_query) always passes correct types, and the
  empty_result early-return already handles the zero-accounts case.
- Remove the redundant accounts JOIN and its family_id/status filters from the
  aggregation SQL. account_ids is already scoped to the family's visible
  (draft/active) investment accounts, so the join back to accounts is
  unnecessary work in the query plan. Drop the now-unused family_id param.
- Add a regression assertion that the aggregate no longer joins accounts.

2026-06-18 20:18:18 +02:00

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