* fix: add missing default_voucher_series column to company_settings
The /settings/bookkeeping form, TypeScript types, and Zod schema have all
referenced company_settings.default_voucher_series, but no migration ever
added it. Saving the setting failed with: "Could not find the
'default_voucher_series' column of 'company_settings' in the schema cache".
Adds the column (text NOT NULL DEFAULT 'A') with a CHECK constraint that
mirrors the Zod validation ([A-Z]), plus a PostgREST schema reload.
Migration already applied to production to unblock reporting users.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
* fix: explicitly enforce NOT NULL and DEFAULT on default_voucher_series
ADD COLUMN IF NOT EXISTS silently skips the column definition when the
column already exists, so environments that got the column out-of-band
could end up with a different NOT NULL/DEFAULT attribute than a fresh boot.
Add explicit idempotent ALTER COLUMN statements that reassert both, with
a backfill pass so SET NOT NULL can't fail on legacy nullable rows.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
