Moved test database teardown into defer blocks and unified the one-decimal formatting in the Website service.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

Services/Website/Sources/Library/Internal/Pages/WantsPage.swift

@@ -219,8 +219,8 @@ private extension WantsPage {
                 SelectField(
                     name: "min-grade",
                     title: "Lowest grade",
-                    options: [("", "Any grade")] + Grading.scale.map { ($0.grade.gradeLabel, "\($0.grade.gradeLabel) · \($0.code)") },
-                    selected: draft.minGrade?.gradeLabel ?? ""
+                    options: [("", "Any grade")] + Grading.scale.map { ($0.grade.oneDecimal, "\($0.grade.oneDecimal) · \($0.code)") },
+                    selected: draft.minGrade?.oneDecimal ?? ""
                 )
                 TextField(
                     name: "max-price",
@@ -260,7 +260,7 @@ private extension WantsPage {
     ) -> String {
         [
             want.slabbedOnly ? "slabbed only" : nil,
-            want.minGrade.map { "grade ≥ \($0.gradeLabel)" },
+            want.minGrade.map { "grade ≥ \($0.oneDecimal)" },
             want.maxPriceCents.map { "max \($0.euros)" },
             "ships from EU only",
         ]
@@ -275,7 +275,7 @@ private extension WantsPage {
         var parameters = SearchParameters().setting(.query, to: want.title.replacingOccurrences(of: "·", with: " "))
 
         if let minGrade = want.minGrade {
-            parameters = parameters.setting(.gradeMin, to: minGrade.gradeLabel)
+            parameters = parameters.setting(.gradeMin, to: minGrade.oneDecimal)
         }
 
         if let maxPriceCents = want.maxPriceCents {