fix(macOS): rename Clawdbot directories to Moltbot for naming consistency

Directory renames:
- apps/macos/Sources/Clawdbot → Moltbot
- apps/macos/Sources/ClawdbotDiscovery → MoltbotDiscovery
- apps/macos/Sources/ClawdbotIPC → MoltbotIPC
- apps/macos/Sources/ClawdbotMacCLI → MoltbotMacCLI
- apps/macos/Sources/ClawdbotProtocol → MoltbotProtocol
- apps/macos/Tests/ClawdbotIPCTests → MoltbotIPCTests
- apps/shared/ClawdbotKit → MoltbotKit
- apps/shared/MoltbotKit/Sources/Clawdbot* → Moltbot*
- apps/shared/MoltbotKit/Tests/ClawdbotKitTests → MoltbotKitTests

Resource renames:
- Clawdbot.icns → Moltbot.icns

Code fixes:
- Update Package.swift paths to reference Moltbot* directories
- Fix clawdbot* → moltbot* symbol references in Swift code:
  - clawdbotManagedPaths → moltbotManagedPaths
  - clawdbotExecutable → moltbotExecutable
  - clawdbotCommand → moltbotCommand
  - clawdbotNodeCommand → moltbotNodeCommand
  - clawdbotOAuthDirEnv → moltbotOAuthDirEnv
  - clawdbotSelectSettingsTab → moltbotSelectSettingsTab

apps/macos/Sources/Moltbot/SettingsRootView.swift

@@ -77,7 +77,7 @@ struct SettingsRootView: View {
         .padding(.vertical, 22)
         .frame(width: SettingsTab.windowWidth, height: SettingsTab.windowHeight, alignment: .topLeading)
         .frame(maxWidth: .infinity, maxHeight: .infinity, alignment: .topLeading)
-        .onReceive(NotificationCenter.default.publisher(for: .clawdbotSelectSettingsTab)) { note in
+        .onReceive(NotificationCenter.default.publisher(for: .moltbotSelectSettingsTab)) { note in
             if let tab = note.object as? SettingsTab {
                 withAnimation(.spring(response: 0.32, dampingFraction: 0.85)) {
                     self.selectedTab = tab