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* fix(bokslut): make dispositions storno-safe and derive fond math from opening balances A reversed year_end voucher kept its storno in the income statement while the original was excluded (source_type asymmetry), inflating resultat fore dispositioner by exactly the reversed amount, and the posted-only fond balance produced a phantom negative 212X that leaked a bogus aterforing proposal. Support case: a user double-booked periodiseringsfond, reversed both correctly, and the dispositions page still showed wrong numbers. - trial-balance excludeYearEndClosing now also excludes entries chained to reversed year_end entries via reverses_id/correction_of_id (grammar verified against staging PostgREST) - listExistingPeriodiseringsfonder counts posted+reversed so storno pairs cancel, and returns opening balances per fond - schablonintakt per IL 30 kap 6a: opening balance base, rate = SLR per closing year (1.96% FY2025, 2.55% FY2026), replacing the wrong SLR+1pp 0.0355 constant - avsattning 25% cap is year-total: already-provisioned current-cohort growth consumes headroom in both preview and commit, so re-running the flow can no longer double-book the fond - SLP posts before avsattning (deductible, shrinks the cap base) and is posted-aware: no double proposal or double count on resumed runs - sumPostedYearEndDispositions counts correction replacements of reversed year_end entries and exposes the SLP portion Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> * refactor(bokslut): use roundOre for new fond/disposition rounding Satisfies the naive-ore-round ratchet that tightened on main; identical arithmetic, pinned by the existing exact-value tests. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> * fix(bokslut): address PR #1063 review findings - computeProposal receives the already-validated period row: a transient DB failure can no longer silently skip a requested disposition (and two redundant per-item period fetches are gone) - getSchablonintaktRate fails closed for unmapped years instead of falling back to the latest known rate: statutory rates are never guessed; POST rate override remains the escape hatch - listExistingPeriodiseringsfonder is opening-balance-entry aware: a fond carried via the OB entry booked by year-end closing was counted twice (once from history, once from the OB entry); balances now derive from OB + current-period activity when an OB entry exists - periodStart is validated as a real calendar date, not just a shape - reversed year_end correction targets resolve company-wide in sumPostedYearEndDispositions, matching the trial balance exclusion Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> --------- Co-authored-by: Claude Fable 5 <noreply@anthropic.com>