test(links): prove a period search returns exactly that period

Parser cases for every accepted form in de, en, es, fr, it, pl and ko and
the near misses that stay text; builder cases for every family; and an
integration walk over three years of lab results, conditions, visits and
documents, with records either side of each boundary in the person's
zone, across every page.

src/components/documents/__tests__/document-record-links.test.tsx

@@ -18,6 +18,7 @@ vi.mock("@/components/links/use-link-picker-pages", async (importOriginal) => ({
     setTerm: vi.fn(),
     searchPending: false,
     filterLocally: true,
+    period: null,
     hasOlder: false,
     hasNewer: false,
     loadingOlder: false,