fix: match provider picker to action popup

Tests/ConjureKitTests/ActionsBackgroundTests.swift

@@ -29,3 +29,35 @@ import Testing
         actions.close(animated: false)
     }
 }
+
+@Test @MainActor func providerPickerOpensBelowAnchorAndKeepsCurrentSelection() throws {
+    _ = NSApplication.shared
+    let window = NSWindow(contentRect: NSRect(x: 0, y: 0, width: 750, height: 480),
+                          styleMask: .borderless, backing: .buffered, defer: false)
+    window.isReleasedWhenClosed = false
+    let host = try #require(window.contentView)
+    let pill = NSView(frame: NSRect(x: 500, y: 420, width: 230, height: 36))
+    let anchor = NSButton(frame: pill.bounds)
+    pill.addSubview(anchor)
+    host.addSubview(pill)
+    let popup = ApplicationActionsController()
+    defer { popup.close(animated: false); window.orderOut(nil) }
+    var selections: [Bool] = []
+    popup.selectProvider = { selections.append($0) }
+    popup.showProviders(selectedOpenAI: true, relativeTo: anchor)
+    host.layoutSubtreeIfNeeded()
+    let rect = popup.view.convert(popup.view.bounds, to: host)
+    #expect(rect.maxY < pill.frame.minY)
+    #expect(rect.maxX == pill.frame.maxX)
+    #expect(pill.alphaValue == 1)
+    _ = popup.handle(#selector(NSResponder.insertNewline(_:)))
+    #expect(selections == [true])
+    // Reopen during the close animation, then switch modes without retaining the old anchor.
+    popup.showTranslation(relativeTo: anchor)
+    popup.showProviders(selectedOpenAI: false, relativeTo: anchor)
+    host.layoutSubtreeIfNeeded()
+    #expect(popup.view.convert(popup.view.bounds, to: host).maxY < pill.frame.minY)
+    popup.moveSelection(by: 1)
+    _ = popup.handle(#selector(NSResponder.insertNewline(_:)))
+    #expect(selections == [true, true])
+}

Tests/ConjureKitTests/TranslationExecutionTests.swift

@@ -185,7 +185,6 @@ func translationExecutionRejectsOldCompletionsWithoutClearingNewRequests() async
     tool.input = { input }
     let views = descendants(tool.view)
     let output = try #require(views.compactMap { $0 as? NSTextView }.first)
-    let provider = tool.providerPicker
     let button = try #require(views.compactMap { $0 as? NSButton }.first { $0.action == NSSelectorFromString("performPrimaryAction") })
     tool.translate()
     try await waitForTranslation { requests.pending.count == 1 }
@@ -200,8 +199,7 @@ func translationExecutionRejectsOldCompletionsWithoutClearingNewRequests() async
     tool.translate()
     #expect(requests.inputs.count == 2)
 
-    provider.selectItem(at: 1)
-    _ = tool.perform(provider.action, with: provider)
+    tool.selectProvider(openAI: true)
     #expect(defaults.string(forKey: "translationProvider") == "openai")
     tool.translate()
     try await waitForTranslation { requests.pending.count == 3 }