feat(vaccinations): carry the immunization log through export and restore

- a new backup section reads the dose and its document link through
  their own delegates and writes both ends in one file, the arrangement
  the visit section already uses
- the practitioner and the visit remap to the rows the same restore put
  back; the booster reminder never travels, so its reference resolves to
  null and the drop is reported rather than swallowed
- the antigen slug restores verbatim: a slug the catalogue has since
  dropped still says what a person was given
- the round trip seeds a dose with every optional column filled and
  reads each one back, so a returning row count cannot stand in for a
  returning record

src/app/api/export/__tests__/per-type-routes.test.ts

@@ -36,6 +36,8 @@ vi.mock("@/lib/db", () => ({
     encounterDocumentLink: { findMany: vi.fn().mockResolvedValue([]) },
     encounterLabLink: { findMany: vi.fn().mockResolvedValue([]) },
     encounterConditionLink: { findMany: vi.fn().mockResolvedValue([]) },
+    vaccinationRecord: { findMany: vi.fn().mockResolvedValue([]) },
+    vaccinationDocumentLink: { findMany: vi.fn().mockResolvedValue([]) },
     // v1.15.0 — cycle tables read by the full-backup helper.
     cycleProfile: { findUnique: vi.fn() },
     menstrualCycle: { findMany: vi.fn() },
@@ -115,6 +117,10 @@ beforeEach(() => {
   vi.mocked(prisma.encounterConditionLink.findMany).mockResolvedValue(
     [] as never,
   );
+  vi.mocked(prisma.vaccinationRecord.findMany).mockResolvedValue([] as never);
+  vi.mocked(prisma.vaccinationDocumentLink.findMany).mockResolvedValue(
+    [] as never,
+  );
 });
 
 afterEach(() => {

src/app/api/export/encrypted/__tests__/route.test.ts

@@ -34,6 +34,8 @@ vi.mock("@/lib/db", () => ({
     encounterDocumentLink: { findMany: vi.fn().mockResolvedValue([]) },
     encounterLabLink: { findMany: vi.fn().mockResolvedValue([]) },
     encounterConditionLink: { findMany: vi.fn().mockResolvedValue([]) },
+    vaccinationRecord: { findMany: vi.fn().mockResolvedValue([]) },
+    vaccinationDocumentLink: { findMany: vi.fn().mockResolvedValue([]) },
     cycleProfile: { findUnique: vi.fn().mockResolvedValue(null) },
     menstrualCycle: { findMany: vi.fn().mockResolvedValue([]) },
     cycleDayLog: { findMany: vi.fn().mockResolvedValue([]) },