polish(vat): title-row Exportera, fused period chip, chip classification, calm SKV status (#1181)

Founder feedback on the live momsdeklaration (2026-07-25):

- The black Exportera now sits on the title row like every other page:
  standalone report pages render their own PageHeader (FocusedReport
  passes the title and skips its own), and the period chips get their
  own row below.
- Year + quarter/month fuse into ONE chip ("Kvartal 3 2026") listing
  five years reverse-chronologically with month-span annotations;
  cadence stays behind the Period chip. Yearly keeps FyPicker, which
  is already a fused rakenskapsar chip.
- The RC-basis worklist's Leverantorstyp/Typ av inkop selects (old
  boxy style with labels) become ContextPicker chips, in the toolbar
  and in each expanded row.
- SkatteverketPanel connection status per the locked conventions: the
  contradictory "Ansluten" + "Session utgangen" badge cluster becomes
  muted "Ansluten" text for the normal state and one attn sentence
  with an embedded "Fornya med BankID" action for the expired session.

Verified via sandbox screenshots (Playwright against dev).

Co-authored-by: Claude Fable 5 <noreply@anthropic.com>

DECISIONS.md

@@ -371,3 +371,4 @@ One line per decision: `[YYYY-MM-DD] <decision>: <why>`. Appended by agents and
 [2026-07-25] Removed invented 6-month minimum for first räkenskapsår: BFL 3 kap 3 § sets no floor (Bolagsverket: "hur kort som helst", max 18 months); the check only existed for isFirstPeriod, exactly the case the law exempts, and blocked a customer shortening an autumn-registered first year to Dec 31.
 [2026-07-25] Article EUR-price support bug: root cause was the edit dialog omitting currency from initialData (form defaulted SEK and PATCHed it back) plus kr-hardcoded formatCurrency calls; export gets a Valuta column + suffix-free decimalColumn instead of extending CURRENCY_FORMAT, importer Valuta detection deferred as follow-up to keep the diff scoped.
 [2026-07-25] Reinstated article deactivation as an explicit PATCH active-toggle button on the detail page (support: odinaero.se) instead of reverting DELETE to soft-delete: 8a9a930f intentionally made DELETE hard-delete for unused articles, but that left invoice-referenced articles (ARTICLE_IN_USE) with no retire path; the old deactivate i18n keys were still in messages/ and are reused.
+[2026-07-25] Momsdeklaration period selection fused into one chip (year+quarter/month, reverse-chron, 5 years) instead of separate year and period pickers; cadence stays behind the Period chip. Standalone report pages now render their own PageHeader so Exportera sits on the title row per convention 9.