docs(browser): clarify target recovery after timeout

Author: MagMueller

packages/bcode-browser/skills/browser-execute/SKILL.md

@@ -202,7 +202,7 @@ console.log(JSON.stringify(titles))
 ## Guardrails
 - Top-level `import` statements inside the snippet body are not allowed. Use `await import(...)` instead.
 - No CPU-bound infinite loops without `await` — they ignore the timeout. Insert `await new Promise(r => setTimeout(r, 0))` to yield.
-- `browser_execute` defaults to 60s (max 600s); inner CDP timeouts do not extend it. Prefer the default and small batches: a longer timeout also delays your next chance to inspect or recover, so split multi-page loops into separate calls. After a timeout, the same CDP session and active target are preserved; inspect the current page state in the next call and reconnect only if the socket actually closed.
+- `browser_execute` defaults to 60s (max 600s); inner CDP timeouts do not extend it. Prefer the default and small batches: a longer timeout also delays your next chance to inspect or recover, so split multi-page loops into separate calls. After a timeout, the same CDP session and active target are preserved, but an already-sent command may still be running in Chrome. Try one small state check; if that target is unresponsive, attach a fresh page target instead of retrying longer, and reconnect only if the socket actually closed.
 
 ## Console
 - `console.log`, `console.error`, `console.warn`, `console.info`, `console.debug` are all captured and streamed to the user. Treat them as your stdout. Other `console.*` methods write to bcode's stderr without being captured into the tool result.

packages/bcode-browser/src/cdp/session.ts

@@ -96,7 +96,6 @@ export class Session implements Transport {
    * and we connect directly to the supplied endpoint.
    */
   async connect(opts: ConnectOptions = {}): Promise<void> {
-    assertExecutionActive();
     if (this.invalidatedError) throw this.invalidatedError;
     const timeoutMs = opts.timeoutMs ?? 5_000;
     if (opts.wsUrl || opts.profileDir) {
@@ -284,7 +283,6 @@ export class Session implements Transport {
     opts: { predicate?: (params: T) => boolean; timeoutMs?: number } = {},
     ...rest: never[]
   ): Promise<T> {
-    assertExecutionActive();
     // Both legacy positional shapes fail loudly rather than silently reverting
     // to the 30s default: `(method, predicate)` lands on the first guard,
     // `(method, predicate?, timeoutMs)` on the second. Snippets are written at