增加语音对话功能

src/modules/lecture/infrastructure/platform/paths.ts

@@ -0,0 +1,33 @@
+import { isWindows } from "./os";
+
+/**
+ * Normalize user-provided executable path for the current OS.
+ * - Expands ~ on macOS/Linux via PathUtils (when available)
+ * - Ensures .exe suffix on Windows when missing
+ */
+export function normalizeExecutablePath(input: string): string {
+  const trimmed = (input || "").trim();
+  if (!trimmed) return "";
+
+  const path = trimmed;
+
+  if (isWindows() && !/\.(exe|cmd|bat)$/i.test(path)) {
+    return `${path}.exe`;
+  }
+  return path;
+}
+
+/** Join path segments using Zotero PathUtils (cross-platform). */
+export function joinPath(...parts: string[]): string {
+  return PathUtils.join(...parts.filter(Boolean));
+}
+
+/** Convert local file path to file:// URL for <audio src>. */
+export function pathToFileUrl(filePath: string): string {
+  const normalized = filePath.replace(/\\/g, "/");
+  if (normalized.startsWith("file://")) return normalized;
+  if (/^[A-Za-z]:\//.test(normalized)) {
+    return `file:///${encodeURI(normalized)}`;
+  }
+  return `file://${encodeURI(normalized)}`;
+}