diff --git a/skills/baoyu-url-to-markdown/scripts/bun.lock b/skills/baoyu-url-to-markdown/scripts/bun.lock
index b3a5597..463632f 100644
--- a/skills/baoyu-url-to-markdown/scripts/bun.lock
+++ b/skills/baoyu-url-to-markdown/scripts/bun.lock
@@ -1,5 +1,6 @@
 {
   "lockfileVersion": 1,
+  "configVersion": 0,
   "workspaces": {
     "": {
       "name": "baoyu-url-to-markdown-scripts",
diff --git a/skills/baoyu-url-to-markdown/scripts/vendor/baoyu-fetch/src/adapters/types.ts b/skills/baoyu-url-to-markdown/scripts/vendor/baoyu-fetch/src/adapters/types.ts
index 8ca336a..fa14a5c 100644
--- a/skills/baoyu-url-to-markdown/scripts/vendor/baoyu-fetch/src/adapters/types.ts
+++ b/skills/baoyu-url-to-markdown/scripts/vendor/baoyu-fetch/src/adapters/types.ts
@@ -64,6 +64,8 @@ export interface Adapter {
   name: string;
   match(input: AdapterInput): boolean;
   checkLogin?(context: AdapterContext): Promise<AdapterLoginInfo>;
+  exportCookies?(context: AdapterContext, profileDir?: string): Promise<boolean>;
+  restoreCookies?(context: AdapterContext, profileDir?: string): Promise<boolean>;
   downloadMedia?(request: MediaDownloadRequest): Promise<MediaDownloadResult>;
   process(context: AdapterContext): Promise<AdapterProcessResult>;
 }
diff --git a/skills/baoyu-url-to-markdown/scripts/vendor/baoyu-fetch/src/adapters/x/index.ts b/skills/baoyu-url-to-markdown/scripts/vendor/baoyu-fetch/src/adapters/x/index.ts
index da63a57..f495c08 100644
--- a/skills/baoyu-url-to-markdown/scripts/vendor/baoyu-fetch/src/adapters/x/index.ts
+++ b/skills/baoyu-url-to-markdown/scripts/vendor/baoyu-fetch/src/adapters/x/index.ts
@@ -1,4 +1,5 @@
 import type { Adapter, AdapterLoginInfo } from "../types";
+import { exportCookies, restoreCookies, type CookieSidecarConfig } from "../../browser/cookie-sidecar";
 import { detectInteractionGate } from "../../browser/interaction-gates";
 import type { ExtractedDocument } from "../../extract/document";
 import { collectMediaFromDocument } from "../../media/markdown-media";
@@ -10,6 +11,16 @@ import { extractSingleTweetDocumentFromPayload } from "./single";
 import { extractThreadDocumentFromPayloads } from "./thread";
 import { loadFullXThread } from "./thread-loader";
 
+const cookieConfig: CookieSidecarConfig = {
+  urls: ["https://x.com/", "https://twitter.com/"],
+  filename: "x-session-cookies.json",
+  requiredCookieNames: ["auth_token", "ct0"],
+  filterCookie: (c) => {
+    const d = c.domain ?? "";
+    return d.endsWith("x.com") || d.endsWith("twitter.com");
+  },
+};
+
 function extractDocumentFromPayloads(
   payloads: unknown[],
   statusId: string,
@@ -49,6 +60,12 @@ export const xAdapter: Adapter = {
   async checkLogin(context) {
     return detectXLogin(context);
   },
+  async exportCookies(context, profileDir) {
+    return exportCookies(context.browser.targetSession, cookieConfig, profileDir);
+  },
+  async restoreCookies(context, profileDir) {
+    return restoreCookies(context.browser.targetSession, cookieConfig, profileDir);
+  },
   async process(context) {
     const statusId = extractStatusId(context.input.url);
     if (!statusId) {
diff --git a/skills/baoyu-url-to-markdown/scripts/vendor/baoyu-fetch/src/adapters/x/session.ts b/skills/baoyu-url-to-markdown/scripts/vendor/baoyu-fetch/src/adapters/x/session.ts
new file mode 100644
index 0000000..54b2ba0
--- /dev/null
+++ b/skills/baoyu-url-to-markdown/scripts/vendor/baoyu-fetch/src/adapters/x/session.ts
@@ -0,0 +1,47 @@
+import type { AdapterContext } from "../types";
+
+const X_SESSION_URLS = ["https://x.com/", "https://twitter.com/"] as const;
+const REQUIRED_X_SESSION_COOKIES = ["auth_token", "ct0"] as const;
+
+interface CookieLike {
+  name?: string;
+  value?: string | null;
+}
+
+interface NetworkGetCookiesResult {
+  cookies?: CookieLike[];
+}
+
+export function buildXSessionCookieMap(cookies: readonly CookieLike[]): Record<string, string> {
+  const cookieMap: Record<string, string> = {};
+  for (const cookie of cookies) {
+    const name = cookie.name?.trim();
+    const value = cookie.value?.trim();
+    if (!name || !value) {
+      continue;
+    }
+    cookieMap[name] = value;
+  }
+  return cookieMap;
+}
+
+export function hasRequiredXSessionCookies(cookieMap: Record<string, string>): boolean {
+  return REQUIRED_X_SESSION_COOKIES.every((name) => Boolean(cookieMap[name]));
+}
+
+export async function readXSessionCookieMap(
+  context: Pick<AdapterContext, "browser">,
+): Promise<Record<string, string>> {
+  const { cookies } = await context.browser.targetSession.send<NetworkGetCookiesResult>(
+    "Network.getCookies",
+    { urls: [...X_SESSION_URLS] },
+  );
+  return buildXSessionCookieMap(cookies ?? []);
+}
+
+export async function isXSessionReady(
+  context: Pick<AdapterContext, "browser">,
+): Promise<boolean> {
+  const cookieMap = await readXSessionCookieMap(context);
+  return hasRequiredXSessionCookies(cookieMap);
+}
diff --git a/skills/baoyu-url-to-markdown/scripts/vendor/baoyu-fetch/src/browser/chrome-launcher.ts b/skills/baoyu-url-to-markdown/scripts/vendor/baoyu-fetch/src/browser/chrome-launcher.ts
index 992942d..1efe4c5 100644
--- a/skills/baoyu-url-to-markdown/scripts/vendor/baoyu-fetch/src/browser/chrome-launcher.ts
+++ b/skills/baoyu-url-to-markdown/scripts/vendor/baoyu-fetch/src/browser/chrome-launcher.ts
@@ -1,6 +1,16 @@
 import { launch, type LaunchedChrome } from "chrome-launcher";
+import WebSocket from "ws";
 import type { Logger } from "../utils/logger";
-import { ensureChromeProfileDir, findExistingChromeDebugPort, resolveChromeProfileDir } from "./profile";
+import {
+  cleanChromeLockArtifacts,
+  ensureChromeProfileDir,
+  findChromeProcessUsingProfile,
+  findExistingChromeDebugPort,
+  hasChromeLockArtifacts,
+  listChromeProfileEntries,
+  resolveChromeProfileDir,
+  shouldRetryChromeLaunchRecovery,
+} from "./profile";
 
 interface ChromeVersionResponse {
   webSocketDebuggerUrl: string;
@@ -65,6 +75,80 @@ async function tryReuseChrome(profileDir: string, logger?: Logger): Promise<Chro
   return null;
 }
 
+async function launchFreshChrome(
+  profileDir: string,
+  options: Pick<ChromeConnectOptions, "browserPath" | "headless">,
+): Promise<ChromeConnection> {
+  let launchedChrome: LaunchedChrome | null = null;
+  try {
+    launchedChrome = await launch({
+      chromePath: options.browserPath,
+      userDataDir: profileDir,
+      chromeFlags: [
+        "--disable-background-networking",
+        "--disable-default-apps",
+        "--disable-popup-blocking",
+        "--disable-sync",
+        "--no-first-run",
+        "--no-default-browser-check",
+        "--remote-allow-origins=*",
+        ...(!options.headless ? ["--no-startup-window"] : []),
+        ...(options.headless ? ["--headless=new"] : []),
+      ],
+    });
+
+    const origin = `http://127.0.0.1:${launchedChrome.port}`;
+    const version = await fetchJson<ChromeVersionResponse>(`${origin}/json/version`);
+
+    const chrome = launchedChrome;
+    return {
+      browserWsUrl: version.webSocketDebuggerUrl,
+      origin,
+      port: launchedChrome.port,
+      profileDir,
+      launched: true,
+      async close() {
+        if (!chrome) return;
+        await gracefulCloseChrome(chrome, origin);
+      },
+    };
+  } catch (error) {
+    launchedChrome?.kill();
+    throw error;
+  }
+}
+
+async function gracefulCloseChrome(chrome: LaunchedChrome, origin: string): Promise<void> {
+  try {
+    const resp = await fetch(`${origin}/json/version`);
+    const { webSocketDebuggerUrl } = (await resp.json()) as ChromeVersionResponse;
+    if (webSocketDebuggerUrl) {
+      const ws = await new Promise<WebSocket>((resolve, reject) => {
+        const socket = new WebSocket(webSocketDebuggerUrl);
+        socket.once("open", () => resolve(socket));
+        socket.once("error", reject);
+      });
+      const id = 1;
+      ws.send(JSON.stringify({ id, method: "Browser.close" }));
+      await new Promise<void>((resolve) => {
+        const timer = setTimeout(() => { ws.close(); resolve(); }, 5_000);
+        ws.once("close", () => { clearTimeout(timer); resolve(); });
+      });
+      const exited = await new Promise<boolean>((resolve) => {
+        if (chrome.pid && !isProcessAlive(chrome.pid)) { resolve(true); return; }
+        const timer = setTimeout(() => resolve(false), 3_000);
+        chrome.process.once("exit", () => { clearTimeout(timer); resolve(true); });
+      });
+      if (exited) return;
+    }
+  } catch {}
+  chrome.kill();
+}
+
+function isProcessAlive(pid: number): boolean {
+  try { process.kill(pid, 0); return true; } catch { return false; }
+}
+
 export async function connectChrome(options: ChromeConnectOptions): Promise<ChromeConnection> {
   if (options.cdpUrl) {
     if (options.cdpUrl.startsWith("ws://") || options.cdpUrl.startsWith("wss://")) {
@@ -84,34 +168,20 @@ export async function connectChrome(options: ChromeConnectOptions): Promise<Chro
   }
 
   options.logger?.warn(`No running Chrome debugger found for profile ${profileDir}. Launching Chrome with that profile.`);
+  try {
+    return await launchFreshChrome(profileDir, options);
+  } catch (error) {
+    const entries = await listChromeProfileEntries(profileDir);
+    const shouldRetry = shouldRetryChromeLaunchRecovery({
+      hasLockArtifacts: hasChromeLockArtifacts(entries),
+      hasLiveOwner: findChromeProcessUsingProfile(profileDir),
+    });
+    if (!shouldRetry) {
+      throw error;
+    }
 
-  const launchedChrome: LaunchedChrome = await launch({
-    chromePath: options.browserPath,
-    userDataDir: profileDir,
-    chromeFlags: [
-      "--disable-background-networking",
-      "--disable-default-apps",
-      "--disable-popup-blocking",
-      "--disable-sync",
-      "--no-first-run",
-      "--no-default-browser-check",
-      "--remote-allow-origins=*",
-      ...(!options.headless ? ["--no-startup-window"] : []),
-      ...(options.headless ? ["--headless=new"] : []),
-    ],
-  });
-
-  const origin = `http://127.0.0.1:${launchedChrome.port}`;
-  const version = await fetchJson<ChromeVersionResponse>(`${origin}/json/version`);
-
-  return {
-    browserWsUrl: version.webSocketDebuggerUrl,
-    origin,
-    port: launchedChrome.port,
-    profileDir,
-    launched: true,
-    async close() {
-      launchedChrome.kill();
-    },
-  };
+    options.logger?.warn(`Chrome launch failed with stale profile locks. Cleaning ${profileDir} and retrying once.`);
+    cleanChromeLockArtifacts(profileDir);
+    return await launchFreshChrome(profileDir, options);
+  }
 }
diff --git a/skills/baoyu-url-to-markdown/scripts/vendor/baoyu-fetch/src/browser/cookie-sidecar.ts b/skills/baoyu-url-to-markdown/scripts/vendor/baoyu-fetch/src/browser/cookie-sidecar.ts
new file mode 100644
index 0000000..4b80302
--- /dev/null
+++ b/skills/baoyu-url-to-markdown/scripts/vendor/baoyu-fetch/src/browser/cookie-sidecar.ts
@@ -0,0 +1,100 @@
+import { readFile, writeFile, mkdir } from "node:fs/promises";
+import { dirname, join } from "node:path";
+import { resolveChromeProfileDir } from "./profile";
+import type { TargetSession } from "./cdp-client";
+
+export interface CdpCookie {
+  name: string;
+  value: string;
+  domain: string;
+  path: string;
+  expires: number;
+  size: number;
+  httpOnly: boolean;
+  secure: boolean;
+  session: boolean;
+  sameSite?: string;
+  priority?: string;
+  sameParty?: boolean;
+  sourceScheme?: string;
+  sourcePort?: number;
+  partitionKey?: string;
+}
+
+interface SidecarData {
+  savedAt: string;
+  cookies: CdpCookie[];
+}
+
+export interface CookieSidecarConfig {
+  urls: readonly string[];
+  filename: string;
+  requiredCookieNames: readonly string[];
+  filterCookie?: (cookie: CdpCookie) => boolean;
+}
+
+function sidecarPath(filename: string, profileDir?: string): string {
+  return join(resolveChromeProfileDir(profileDir), filename);
+}
+
+function hasRequired(cookies: CdpCookie[], names: readonly string[]): boolean {
+  return names.every((name) =>
+    cookies.some((c) => c.name === name && Boolean(c.value)),
+  );
+}
+
+async function getCookies(session: TargetSession, urls: readonly string[]): Promise<CdpCookie[]> {
+  const { cookies } = await session.send<{ cookies: CdpCookie[] }>(
+    "Network.getCookies",
+    { urls: [...urls] },
+  );
+  return cookies ?? [];
+}
+
+export async function exportCookies(
+  session: TargetSession,
+  config: CookieSidecarConfig,
+  profileDir?: string,
+): Promise<boolean> {
+  const all = await getCookies(session, config.urls);
+  const filtered = config.filterCookie ? all.filter(config.filterCookie) : all;
+  if (!hasRequired(filtered, config.requiredCookieNames)) return false;
+
+  const filePath = sidecarPath(config.filename, profileDir);
+  await mkdir(dirname(filePath), { recursive: true });
+  const data: SidecarData = { savedAt: new Date().toISOString(), cookies: filtered };
+  await writeFile(filePath, JSON.stringify(data, null, 2));
+  return true;
+}
+
+export async function restoreCookies(
+  session: TargetSession,
+  config: CookieSidecarConfig,
+  profileDir?: string,
+): Promise<boolean> {
+  const live = await getCookies(session, config.urls);
+  if (hasRequired(live, config.requiredCookieNames)) return false;
+
+  const filePath = sidecarPath(config.filename, profileDir);
+  const raw = await readFile(filePath, "utf8");
+  const data = JSON.parse(raw) as SidecarData;
+  if (!data.cookies?.length) return false;
+
+  const now = Date.now() / 1000;
+  const valid = data.cookies.filter((c) => c.session || !c.expires || c.expires > now);
+  if (!hasRequired(valid, config.requiredCookieNames)) return false;
+
+  await session.send("Network.setCookies", {
+    cookies: valid.map((c) => ({
+      name: c.name,
+      value: c.value,
+      domain: c.domain,
+      path: c.path,
+      httpOnly: c.httpOnly,
+      secure: c.secure,
+      sameSite: c.sameSite,
+      expires: c.expires,
+    })),
+  });
+  return true;
+}
diff --git a/skills/baoyu-url-to-markdown/scripts/vendor/baoyu-fetch/src/browser/profile.ts b/skills/baoyu-url-to-markdown/scripts/vendor/baoyu-fetch/src/browser/profile.ts
index 9239c2b..986fb32 100644
--- a/skills/baoyu-url-to-markdown/scripts/vendor/baoyu-fetch/src/browser/profile.ts
+++ b/skills/baoyu-url-to-markdown/scripts/vendor/baoyu-fetch/src/browser/profile.ts
@@ -19,6 +19,8 @@ interface ChromeVersionResponse {
   webSocketDebuggerUrl?: string;
 }
 
+const CHROME_LOCK_FILE_NAMES = ["SingletonLock", "SingletonSocket", "SingletonCookie", "chrome.pid"] as const;
+
 function resolveDataBaseDir(): string {
   if (process.platform === "darwin") {
     return path.join(os.homedir(), "Library", "Application Support");
@@ -61,6 +63,57 @@ export function ensureChromeProfileDir(profileDir: string): string {
   return profileDir;
 }
 
+export function hasChromeLockArtifacts(entries: readonly string[]): boolean {
+  return CHROME_LOCK_FILE_NAMES.some((name) => entries.includes(name));
+}
+
+export function shouldRetryChromeLaunchRecovery(options: {
+  hasLockArtifacts: boolean;
+  hasLiveOwner: boolean;
+}): boolean {
+  return options.hasLockArtifacts && !options.hasLiveOwner;
+}
+
+export function findChromeProcessUsingProfile(profileDir: string): boolean {
+  if (process.platform === "win32") {
+    return false;
+  }
+
+  try {
+    const result = spawnSync("ps", ["aux"], {
+      encoding: "utf8",
+      timeout: 5_000,
+    });
+    if (result.status !== 0 || !result.stdout) {
+      return false;
+    }
+
+    return result.stdout
+      .split("\n")
+      .some((line) => line.includes(`--user-data-dir=${profileDir}`));
+  } catch {
+    return false;
+  }
+}
+
+export function cleanChromeLockArtifacts(profileDir: string): void {
+  for (const name of CHROME_LOCK_FILE_NAMES) {
+    try {
+      fs.unlinkSync(path.join(profileDir, name));
+    } catch {
+      // Ignore missing files and continue cleaning the remaining artifacts.
+    }
+  }
+}
+
+export async function listChromeProfileEntries(profileDir: string): Promise<string[]> {
+  try {
+    return await fs.promises.readdir(profileDir);
+  } catch {
+    return [];
+  }
+}
+
 async function fetchWithTimeout(url: string, timeoutMs = 3_000): Promise<Response> {
   const controller = new AbortController();
   const timer = setTimeout(() => controller.abort(), timeoutMs);
diff --git a/skills/baoyu-url-to-markdown/scripts/vendor/baoyu-fetch/src/commands/convert.ts b/skills/baoyu-url-to-markdown/scripts/vendor/baoyu-fetch/src/commands/convert.ts
index fc0effa..1f6435f 100644
--- a/skills/baoyu-url-to-markdown/scripts/vendor/baoyu-fetch/src/commands/convert.ts
+++ b/skills/baoyu-url-to-markdown/scripts/vendor/baoyu-fetch/src/commands/convert.ts
@@ -7,6 +7,7 @@ import { detectInteractionGate } from "../browser/interaction-gates";
 import { NetworkJournal } from "../browser/network-journal";
 import { BrowserSession } from "../browser/session";
 import { genericAdapter, resolveAdapter } from "../adapters";
+import { isXSessionReady } from "../adapters/x/session";
 import type { ExtractedDocument } from "../extract/document";
 import { renderMarkdown } from "../extract/markdown-renderer";
 import { downloadMediaAssets } from "../media/default-downloader";
@@ -55,6 +56,7 @@ interface ForceWaitSnapshot {
   url: string;
   hasGate: boolean;
   loginState: LoginState | "unavailable";
+  sessionReady: boolean;
 }
 
 interface SuccessfulConvertOutput {
@@ -78,6 +80,17 @@ function sleep(ms: number): Promise<void> {
   return new Promise((resolve) => setTimeout(resolve, ms));
 }
 
+function isForceWaitSessionReady(snapshot: ForceWaitSnapshot): boolean {
+  return snapshot.sessionReady;
+}
+
+export function shouldKeepBrowserOpenAfterInteraction(options: {
+  launched: boolean;
+  interaction: Pick<WaitForInteractionRequest, "kind" | "provider">;
+}): boolean {
+  return options.launched && options.interaction.kind === "login" && options.interaction.provider === "x";
+}
+
 export function shouldAutoContinueForceWait(
   initial: ForceWaitSnapshot,
   current: ForceWaitSnapshot,
@@ -86,15 +99,20 @@ export function shouldAutoContinueForceWait(
     return true;
   }
 
-  if (initial.loginState === "logged_out" && current.loginState !== "logged_out") {
+  if (initial.loginState === "logged_out" && current.loginState !== "logged_out" && isForceWaitSessionReady(current)) {
     return true;
   }
 
-  if (initial.loginState !== "logged_in" && current.loginState === "logged_in") {
+  if (initial.loginState !== "logged_in" && current.loginState === "logged_in" && isForceWaitSessionReady(current)) {
     return true;
   }
 
-  if (current.url !== initial.url && !current.hasGate && current.loginState !== "logged_out") {
+  if (
+    current.url !== initial.url &&
+    !current.hasGate &&
+    current.loginState !== "logged_out" &&
+    isForceWaitSessionReady(current)
+  ) {
     return true;
   }
 
@@ -173,6 +191,16 @@ async function closeRuntime(runtime: RuntimeResources | null | undefined): Promi
   await runtime.chrome.close().catch(() => {});
 }
 
+async function isInteractionSessionReady(
+  context: AdapterContext,
+  interaction: WaitForInteractionRequest,
+): Promise<boolean> {
+  if (interaction.provider !== "x") {
+    return true;
+  }
+  return await isXSessionReady(context).catch(() => false);
+}
+
 async function reopenInteractiveRuntime(
   runtime: RuntimeResources,
   options: ConvertCommandOptions,
@@ -203,6 +231,7 @@ async function captureForceWaitSnapshot(
     url,
     hasGate: Boolean(gate),
     loginState: login?.state ?? "unavailable",
+    sessionReady: adapter.name === "x" ? await isXSessionReady(context).catch(() => false) : true,
   };
 }
 
@@ -280,7 +309,7 @@ async function waitForInteraction(
   while (Date.now() - startedAt < timeoutMs) {
     if (interaction.kind === "login" && adapter.checkLogin) {
       lastLogin = await adapter.checkLogin(context);
-      if (lastLogin.state === "logged_in") {
+      if (lastLogin.state === "logged_in" && await isInteractionSessionReady(context, interaction)) {
         return lastLogin;
       }
     }
@@ -303,7 +332,7 @@ async function waitForInteraction(
       }
 
       lastLogin = await adapter.checkLogin(context);
-      if (lastLogin.state !== "logged_out") {
+      if (lastLogin.state !== "logged_out" && await isInteractionSessionReady(context, interaction)) {
         return lastLogin;
       }
     }
@@ -347,10 +376,13 @@ export async function runConvertCommand(options: ConvertCommandOptions): Promise
   const url = normalizeUrl(options.url);
   let runtime = await openRuntime(options, options.waitMode !== "none", Boolean(options.debugDir));
   const logger = createLogger(Boolean(options.debugDir));
+  let didLogin = false;
+  let adapter: Adapter | null = null;
+  let context: AdapterContext | null = null;
 
   try {
-    const adapter = resolveAdapter({ url }, options.adapter);
-    let context: AdapterContext = {
+    adapter = resolveAdapter({ url }, options.adapter);
+    context = {
       input: { url },
       browser: runtime.browser,
       network: runtime.network,
@@ -362,6 +394,11 @@ export async function runConvertCommand(options: ConvertCommandOptions): Promise
       downloadMedia: options.downloadMedia,
     };
 
+    if (adapter.restoreCookies) {
+      const restored = await adapter.restoreCookies(context, runtime.chrome.profileDir).catch(() => false);
+      if (restored) logger.info(`Restored ${adapter.name} session cookies from sidecar.`);
+    }
+
     if (options.waitMode === "force") {
       await context.browser.goto(url.toString(), options.timeoutMs).catch(() => {});
       await waitForForceResume(adapter, context, options);
@@ -414,6 +451,9 @@ export async function runConvertCommand(options: ConvertCommandOptions): Promise
       };
 
       await context.browser.goto(url.toString(), options.timeoutMs).catch(() => {});
+      if (result.interaction.kind === "login") {
+        didLogin = true;
+      }
       await waitForInteraction(adapter, context, result.interaction, options);
       result = await adapter.process(context);
 
@@ -516,6 +556,9 @@ export async function runConvertCommand(options: ConvertCommandOptions): Promise
 
     printOutput(markdown);
   } finally {
+    if (adapter?.exportCookies && context) {
+      await adapter.exportCookies(context, runtime.chrome.profileDir).catch(() => {});
+    }
     await closeRuntime(runtime);
   }
 }