fix(hormone-detail): drop "Auto" / "Change" prefix from arrow buttons

User feedback: the verb prefix is redundant — the arrow + next site
name already conveys "this will switch to that site." Simplify both
the site action sheet's auto entry and the bottom Change button to
just "→ Left Glute" (or whatever's next). Fallback "Auto" / "Change"
text only appears when there's no suggested site to display.

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

Author: antazoey

Sources/PatchDay/Hormones/Views/HormoneDetailView.swift

@@ -282,16 +282,15 @@ struct HormoneDetailView: View {
             return NSLocalizedString("Auto", comment: "Auto-pick site")
         }
         let name = suggested.name.isEmpty ? SiteStrings.NewSite : suggested.name
-        return "\(NSLocalizedString("Auto", comment: ""))  → \(name)"
+        return "→ \(name)"
     }
 
     private var changeButtonText: String {
-        let base = NSLocalizedString("Change", comment: "Apply site + date together")
         guard let sdk = container.sdk, let suggested = sdk.sites.suggested else {
-            return base
+            return NSLocalizedString("Change", comment: "Apply site + date together")
         }
         let name = suggested.name.isEmpty ? SiteStrings.NewSite : suggested.name
-        return "\(base)  → \(name)"
+        return "→ \(name)"
     }
 
     private func save() {