chore(release): 0.27.0-fork.51 — --launch Illegal-invocation fix, tab-pin hardening (#7), field-report ergonomics + observability (#8)

- fix(stealth): bind iframe contentWindow proxy methods to the real window
  (--launch "Illegal invocation" on srcdoc-iframe pages)
- fix(tabs): re-pin active target when the pinned page is removed (issue #7)
- feat(cli): coordinate click (click <x> <y> / --coords), tabs/get-text
  aliases, clearer find error (issue #8.4)
- fix(observability): screenshot/network stamp @ <url>; network --clear
  enables capture immediately (issues #8.1/#8.3)
- fix(ab-connect 0.4.2): stale sessionId fails loudly instead of routing to a
  random tab (issue #8.1) — needs a Chrome Web Store republish
- restart notice now flags in-memory context reset (issue #8.2)

package.json

@@ -1,6 +1,6 @@
 {
   "name": "agent-browser-stealth",
-  "version": "0.27.0-fork.50",
+  "version": "0.27.0-fork.51",
   "description": "Browser automation CLI for AI agents — stealth fork with anti-detection",
   "type": "module",
   "packageManager": "pnpm@11.1.3",