Clarify business day average label

Author: stephanos

Sources/AgentTally/Presentation/MenuRowsBuilder.swift

@@ -68,11 +68,11 @@ public enum MenuRowsBuilder {
           .disabled("Today: $\(StatusPresenter.displayDollarAmount(for: spending.todayCost))"))
         rows.append(
           .disabled(
-            "Month: $\(StatusPresenter.displayDollarAmount(for: spending.monthCost)) (\(state.businessDays) biz days)"
+            "Month: $\(StatusPresenter.displayDollarAmount(for: spending.monthCost)) (\(businessDaysLabel(state.businessDays)))"
           )
         )
         rows.append(
-          .disabled("Avg/Day: $\(StatusPresenter.displayDollarAmount(for: spending.avgPerDay))")
+          .disabled("Avg/Biz Day: $\(StatusPresenter.displayDollarAmount(for: spending.avgPerDay))")
         )
         rows.append(
           .disabled(
@@ -161,4 +161,8 @@ public enum MenuRowsBuilder {
 
     return "AgentTally v\(appVersion)"
   }
+
+  private static func businessDaysLabel(_ count: Int) -> String {
+    count == 1 ? "1 business day" : "\(count) business days"
+  }
 }

Tests/MenuRowsHarness.swift

@@ -98,12 +98,12 @@ func testMenuRowsBuilder() throws {
     "menu should place the spending source label directly above the spending rows"
   )
   try expect(
-    rows.contains(.disabled("Month: $209 (4 biz days)")),
-    "month cost should round up to the next display dollar"
+    rows.contains(.disabled("Month: $209 (4 business days)")),
+    "month cost should round up to the next display dollar and label business days"
   )
   try expect(
-    rows.contains(.disabled("Avg/Day: $53")),
-    "average cost should round up to the next display dollar"
+    rows.contains(.disabled("Avg/Biz Day: $53")),
+    "average cost should clarify it is per business day"
   )
   try expect(
     rows.contains(.disabled("Last usage: 40s ago")),
@@ -122,7 +122,7 @@ func testMenuRowsBuilder() throws {
     "Codex today cost should be shown"
   )
   try expect(
-    rows.contains(.disabled("Month: $40 (4 biz days)")),
+    rows.contains(.disabled("Month: $40 (4 business days)")),
     "Codex month cost should be shown"
   )
   try expect(