fix: review fixes — bump CHROMIUM_VERSION to v145, add colorScheme to JS, guard download fallback

js/src/config.ts

@@ -10,7 +10,7 @@ import path from "node:path";
 // ---------------------------------------------------------------------------
 // Chromium version shipped with this release
 // ---------------------------------------------------------------------------
-export const CHROMIUM_VERSION = "142.0.7444.175";
+export const CHROMIUM_VERSION = "145.0.7632.109";
 
 // ---------------------------------------------------------------------------
 // Platform detection

js/src/download.ts

@@ -151,10 +151,13 @@ async function downloadAndExtract(version?: string): Promise<void> {
   );
 
   try {
-    // Try primary server, fall back to GitHub Releases
+    // Try primary server, fall back to GitHub Releases (skip fallback if custom URL)
     try {
       await downloadFile(primaryUrl, tmpPath);
     } catch (primaryErr) {
+      if (process.env.CLOAKBROWSER_DOWNLOAD_URL) {
+        throw primaryErr;
+      }
       console.warn(
         `[cloakbrowser] Primary download failed (${primaryErr instanceof Error ? primaryErr.message : primaryErr}), trying GitHub Releases...`
       );

js/src/playwright.ts

@@ -71,6 +71,7 @@ export async function launchContext(
       viewport: options.viewport ?? DEFAULT_VIEWPORT,
       ...(resolved.locale ? { locale: resolved.locale } : {}),
       ...(resolved.timezone ? { timezoneId: resolved.timezone } : {}),
+      ...(options.colorScheme ? { colorScheme: options.colorScheme } : {}),
     });
   } catch (err) {
     await browser.close();

js/src/types.ts

@@ -30,6 +30,8 @@ export interface LaunchContextOptions extends LaunchOptions {
   locale?: string;
   /** Timezone, e.g. "America/New_York". */
   timezoneId?: string;
+  /** Color scheme preference — 'light', 'dark', or 'no-preference'. */
+  colorScheme?: "light" | "dark" | "no-preference";
 }
 
 export interface BinaryInfo {