refactor: split package into library and CLI products

Reorganize the Swift package into two separate products:
- BushelCloudKit: Reusable library with CloudKit/data source logic
- bushel-cloud: CLI executable using ArgumentParser

This separation allows the CloudKit functionality to be used as a
library in other Swift projects while maintaining the existing CLI tool.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

Author: leogdion

Package.swift

@@ -83,7 +83,8 @@ let package = Package(
         .macOS(.v14)
     ],
     products: [
-        .executable(name: "bushel-cloud", targets: ["BushelCloud"])
+        .library(name: "BushelCloudKit", targets: ["BushelCloudKit"]),
+        .executable(name: "bushel-cloud", targets: ["BushelCloudCLI"])
     ],
     dependencies: [
         .package(url: "https://github.com/brightdigit/MistKit.git", from: "1.0.0-alpha.3"),
@@ -93,21 +94,28 @@ let package = Package(
         .package(url: "https://github.com/apple/swift-log.git", from: "1.0.0")
     ],
     targets: [
-        .executableTarget(
-            name: "BushelCloud",
+        .target(
+            name: "BushelCloudKit",
             dependencies: [
                 .product(name: "MistKit", package: "MistKit"),
                 .product(name: "IPSWDownloads", package: "IPSWDownloads"),
                 .product(name: "SwiftSoup", package: "SwiftSoup"),
-                .product(name: "ArgumentParser", package: "swift-argument-parser"),
                 .product(name: "Logging", package: "swift-log")
             ],
             swiftSettings: swiftSettings
         ),
+        .executableTarget(
+            name: "BushelCloudCLI",
+            dependencies: [
+                .target(name: "BushelCloudKit"),
+                .product(name: "ArgumentParser", package: "swift-argument-parser")
+            ],
+            swiftSettings: swiftSettings
+        ),
         .testTarget(
             name: "BushelCloudTests",
             dependencies: [
-                .target(name: "BushelCloud")
+                .target(name: "BushelCloudKit")
             ],
             swiftSettings: swiftSettings
         )

Sources/BushelCloud/BushelCloudCLI.swift …rces/BushelCloudCLI/BushelCloudCLI.swiftSources/BushelCloud/BushelCloudCLI.swift renamed to Sources/BushelCloudCLI/BushelCloudCLI.swift Sources/BushelCloud/BushelCloudCLI.swift renamed to Sources/BushelCloudCLI/BushelCloudCLI.swift

@@ -1,4 +1,5 @@
 import ArgumentParser
+import BushelCloudKit
 
 @main
 internal struct BushelCloudCLI: AsyncParsableCommand {

…/BushelCloud/Commands/ClearCommand.swift …shelCloudCLI/Commands/ClearCommand.swiftSources/BushelCloud/Commands/ClearCommand.swift renamed to Sources/BushelCloudCLI/Commands/ClearCommand.swift Sources/BushelCloud/Commands/ClearCommand.swift renamed to Sources/BushelCloudCLI/Commands/ClearCommand.swift

@@ -1,5 +1,6 @@
 import ArgumentParser
 import Foundation
+import BushelCloudKit
 
 struct ClearCommand: AsyncParsableCommand {
     static let configuration = CommandConfiguration(

…BushelCloud/Commands/ExportCommand.swift …helCloudCLI/Commands/ExportCommand.swiftSources/BushelCloud/Commands/ExportCommand.swift renamed to Sources/BushelCloudCLI/Commands/ExportCommand.swift Sources/BushelCloud/Commands/ExportCommand.swift renamed to Sources/BushelCloudCLI/Commands/ExportCommand.swift

@@ -1,5 +1,6 @@
 import ArgumentParser
 import Foundation
+import BushelCloudKit
 import MistKit
 
 struct ExportCommand: AsyncParsableCommand {

…s/BushelCloud/Commands/ListCommand.swift …ushelCloudCLI/Commands/ListCommand.swiftSources/BushelCloud/Commands/ListCommand.swift renamed to Sources/BushelCloudCLI/Commands/ListCommand.swift Sources/BushelCloud/Commands/ListCommand.swift renamed to Sources/BushelCloudCLI/Commands/ListCommand.swift

@@ -3,6 +3,7 @@
 
 import ArgumentParser
 import Foundation
+import BushelCloudKit
 import MistKit
 
 struct ListCommand: AsyncParsableCommand {

…BushelCloud/Commands/StatusCommand.swift …helCloudCLI/Commands/StatusCommand.swiftSources/BushelCloud/Commands/StatusCommand.swift renamed to Sources/BushelCloudCLI/Commands/StatusCommand.swift Sources/BushelCloud/Commands/StatusCommand.swift renamed to Sources/BushelCloudCLI/Commands/StatusCommand.swift

@@ -3,6 +3,7 @@
 
 import ArgumentParser
 import Foundation
+import BushelCloudKit
 internal import MistKit
 
 struct StatusCommand: AsyncParsableCommand {

…s/BushelCloud/Commands/SyncCommand.swift …ushelCloudCLI/Commands/SyncCommand.swiftSources/BushelCloud/Commands/SyncCommand.swift renamed to Sources/BushelCloudCLI/Commands/SyncCommand.swift Sources/BushelCloud/Commands/SyncCommand.swift renamed to Sources/BushelCloudCLI/Commands/SyncCommand.swift

@@ -1,5 +1,6 @@
 import ArgumentParser
 import Foundation
+import BushelCloudKit
 
 struct SyncCommand: AsyncParsableCommand {
     static let configuration = CommandConfiguration(