feat: play resolved Miruro HLS with external VTT and stable episode progress

Sources/CLI/TerebiCLI.swift

@@ -18,6 +18,13 @@ enum TerebiCLI {
         case .printDefaultConfig:
             print(PlayerConfiguration.defaultTOML, terminator: "")
         case .launch(let url, let newInstance, let noConfig, let progressFile):
+            await launch(url: url, sourceFile: nil, newInstance: newInstance, noConfig: noConfig, progressFile: progressFile)
+        case .launchSource(let sourceFile, let newInstance, let noConfig, let progressFile):
+            await launch(url: nil, sourceFile: sourceFile, newInstance: newInstance, noConfig: noConfig, progressFile: progressFile)
+        }
+    }
+
+    private static func launch(url: URL?, sourceFile: URL?, newInstance: Bool, noConfig: Bool, progressFile: URL?) async {
             if let progressFile {
                 var existing = stat()
                 guard lstat(progressFile.path, &existing) != 0 else {
@@ -62,6 +69,9 @@ enum TerebiCLI {
             if let progressFile {
                 configuration.arguments += ["--progress-file", progressFile.path]
             }
+            if let sourceFile {
+                configuration.arguments += ["--source-file", sourceFile.path]
+            }
             if newInstance, let url {
                 configuration.arguments += ["--open-media", url.absoluteString]
             }
@@ -75,7 +85,6 @@ enum TerebiCLI {
                 fail("Could not launch the player: \(error.localizedDescription)", code: 69)
             }
         }
-    }
 
     private static func fail(_ message: String, code: Int32) -> Never {
         FileHandle.standardError.write(Data("terebi: \(message)\n".utf8))