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/GatewayEnvironment.swift

@@ -123,7 +123,7 @@ enum GatewayEnvironment {
                 requiredGateway: expectedString,
                 message: RuntimeLocator.describeFailure(err))
         case let .success(runtime):
-            let gatewayBin = CommandResolver.clawdbotExecutable()
+            let gatewayBin = CommandResolver.moltbotExecutable()
 
             if gatewayBin == nil, projectEntrypoint == nil {
                 return GatewayEnvironmentStatus(
@@ -181,7 +181,7 @@ enum GatewayEnvironment {
         let projectRoot = CommandResolver.projectRoot()
         let projectEntrypoint = CommandResolver.gatewayEntrypoint(in: projectRoot)
         let status = self.check()
-        let gatewayBin = CommandResolver.clawdbotExecutable()
+        let gatewayBin = CommandResolver.moltbotExecutable()
         let runtime = RuntimeLocator.resolve(searchPaths: CommandResolver.preferredPaths())
 
         guard case .ok = status.kind else {