* feat(mcp): accept article_id on gnubok_create_invoice lines
Invoice lines staged via MCP can now reference a catalog article
(artikelregister). Staging prefills description, unit, unit_price,
vat_rate and revenue account from the article with explicit-wins
semantics, mirroring the web line picker. Unknown, foreign-company and
deactivated articles are refused at staging, as is a price prefill from
an article priced in another currency. The approval executor gains a
company-scope gate for staged article_id values: the FK on
invoice_items.article_id proves existence, not tenancy.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
* fix(mcp): adopt article VAT rate only from the customer's default set
Web line picker parity (InvoiceEditor's applyArticle guard): an article's
stored vat_rate is its domestic rate. The prefill previously staged it
unconditionally, and the staging/commit gates check the wider permitted
set (which includes 25/12/6 for taxed-where-performed supplies), so
{article_id, quantity} to a validated EU business staged 25% Swedish VAT
onto a reverse-charge invoice. The customer is now fetched before the
prefill and the article rate is adopted only when it is in the
customer's default rate set; foreign-business lines fall back to the 0%
reverse-charge/export default unless the agent sets vat_rate explicitly.
Prefill logic extracted into resolveInvoiceLineFromArticle (CodeRabbit).
Found by the skeptic review pass (two independent refutations) and the
Swedish accounting compliance bot, all converging on the same defect.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
* fix(invoices): name the article VAT adoption set in vat-rules, not the MCP server
The vat-rate-gate-parity guard pins that no invoice write path mentions
getAvailableVatRates: gating on the picker default is the bug it exists
to prevent. The article-rate adoption in gnubok_create_invoice needs the
default set for a different purpose (prefill, not gating), so the
semantics move into lib/invoices/vat-rules.ts as
getArticleVatRateAdoptionSet(), with tests pinning that adoption is
empty for single-rate foreign customers and always a subset of the
permitted set. server.ts keeps gating on getPermittedVatRates.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
Mattsson
caa0c3b41d