feat(balance): i18n + CHANGELOG for priced kind
- Adds keys under balance.category.kind, balance.category.form.kindLabel
/ kindHint*, balance.category.actions.deleteHasAccountsHint,
balance.category.error.has_accounts, balance.account.form
.symbolRequiredForPriced, balance.snapshot.priced.* (FR + EN).
- Extends balance.errors.* with the four new typed codes:
snapshot_priced_quantity_required,
snapshot_priced_unit_price_required,
snapshot_priced_value_mismatch,
snapshot_simple_must_be_scalar.
- CHANGELOG entries (FR + EN) under [Unreleased].
Refs #140
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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