Mac: finish Moltbot rename

apps/macos/Sources/Moltbot/CanvasWindow.swift

@@ -0,0 +1,26 @@
+import AppKit
+
+let canvasWindowLogger = Logger(subsystem: "bot.molt", category: "Canvas")
+
+enum CanvasLayout {
+    static let panelSize = NSSize(width: 520, height: 680)
+    static let windowSize = NSSize(width: 1120, height: 840)
+    static let anchorPadding: CGFloat = 8
+    static let defaultPadding: CGFloat = 10
+    static let minPanelSize = NSSize(width: 360, height: 360)
+}
+
+final class CanvasPanel: NSPanel {
+    override var canBecomeKey: Bool { true }
+    override var canBecomeMain: Bool { true }
+}
+
+enum CanvasPresentation {
+    case window
+    case panel(anchorProvider: () -> NSRect?)
+
+    var isPanel: Bool {
+        if case .panel = self { return true }
+        return false
+    }
+}