fix(worker): S2 proactive tips logic, i18n parity, hardened test DB reset

- processProactiveTips now iterates all expiring items sorted by urgency and
  emits the first candidate with a recipe that clears 7-day dedup.
- Add pt-PT proactive-tip templates; remove en-GB duplicate; parity test
  asserts against shared-types SUPPORTED_LANGUAGE_TAGS.
- Serialize DB test setup via turbo dependencies; seed truncates only *_test
  DBs, guarded by both --test flag and DB name suffix.

packages/shared-types/src/locale.ts

@@ -31,6 +31,22 @@ export interface LocaleContext {
   currencyCode: string;
 }
 
+/** Kanoniska UI-språk (BCP 47) som alla notismallar måste täcka. */
+export const SUPPORTED_LANGUAGE_TAGS = [
+  "sv-SE",
+  "en-US",
+  "de-DE",
+  "fr-FR",
+  "es-ES",
+  "it-IT",
+  "pl-PL",
+  "nl-NL",
+  "fi-FI",
+  "da-DK",
+  "nb-NO",
+  "pt-PT",
+] as const;
+
 export const DEFAULT_LOCALE_PREFERENCES: UserLocalePreferences = {
   languageTag: "sv-SE",
   regionCode: "SE",