Fix QA re-review: add missing types, aria-label, and temperament text

- Add MedicalAlert, AlertSeverity, CoatType, preferredCuts, medicalAlerts,
  temperamentScore, temperamentFlags to @groombook/types Pet interface
- Add aria-label="Add" to the preferred cuts + button
- Fix temperament text expectation from "(/4/5)" to "(4/5)"

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

src/__tests__/PetForm.test.tsx

@@ -148,7 +148,7 @@ describe("PetForm", () => {
       temperamentFlags: ["Anxious", "Good with kids"],
     };
     render(<PetForm pet={petWithTemperament} onSave={onSave} onCancel={onCancel} />);
-    expect(screen.getByText("(/4/5)")).toBeTruthy();
+    expect(screen.getByText("(4/5)")).toBeTruthy();
     expect(screen.getByText("Anxious")).toBeTruthy();
     expect(screen.getByText("Good with kids")).toBeTruthy();
   });