Add Tonuino Manager website and Sparkle updates

Sources/TonuinoManager/Services/MediaToolLocator.swift

@@ -0,0 +1,63 @@
+import Foundation
+
+enum MediaToolLocator {
+    static func executable(named name: String) -> URL? {
+        guard let bundled = Bundle.main.resourceURL?.appendingPathComponent(name),
+              FileManager.default.isExecutableFile(atPath: bundled.path) else {
+            return nil
+        }
+        return bundled
+    }
+
+    static func javascriptRuntimeArguments() -> [String] {
+        guard let runtime = executable(named: "deno") else { return [] }
+        return ["--js-runtimes", "deno:\(runtime.path)"]
+    }
+}
+
+enum MediaToolError: LocalizedError {
+    case missing(String)
+    case failed(String, String)
+
+    var errorDescription: String? {
+        switch self {
+        case .missing(let tool): "\(tool) fehlt im App-Paket. Installiere eine App-Version mit gebündelten Werkzeugen."
+        case .failed(let tool, let detail): "\(tool) ist fehlgeschlagen: \(detail)"
+        }
+    }
+}
+
+enum MediaProcess {
+    static func run(_ executable: URL, arguments: [String]) throws -> Data {
+        let id = UUID().uuidString
+        let outputURL = FileManager.default.temporaryDirectory.appendingPathComponent("tonuino-tool-\(id).out")
+        let errorURL = FileManager.default.temporaryDirectory.appendingPathComponent("tonuino-tool-\(id).err")
+        FileManager.default.createFile(atPath: outputURL.path, contents: nil)
+        FileManager.default.createFile(atPath: errorURL.path, contents: nil)
+        defer {
+            try? FileManager.default.removeItem(at: outputURL)
+            try? FileManager.default.removeItem(at: errorURL)
+        }
+
+        let outputHandle = try FileHandle(forWritingTo: outputURL)
+        let errorHandle = try FileHandle(forWritingTo: errorURL)
+        defer { try? outputHandle.close(); try? errorHandle.close() }
+
+        let process = Process()
+        process.executableURL = executable
+        process.arguments = arguments
+        process.standardOutput = outputHandle
+        process.standardError = errorHandle
+        do { try process.run() }
+        catch { throw MediaToolError.failed(executable.lastPathComponent, error.localizedDescription) }
+        process.waitUntilExit()
+
+        let output = try Data(contentsOf: outputURL)
+        let errorOutput = String(data: try Data(contentsOf: errorURL), encoding: .utf8)?.trimmingCharacters(in: .whitespacesAndNewlines) ?? ""
+        guard process.terminationStatus == 0 else {
+            let detail = errorOutput.isEmpty ? "Prozesscode \(process.terminationStatus)" : String(errorOutput.suffix(1800))
+            throw MediaToolError.failed(executable.lastPathComponent, detail)
+        }
+        return output
+    }
+}