v1.94.31.0 fix(browse): Playwright 1.64.1 (Chromium 156) for the macOS sandbox-escape CVE; handoff honors GSTACK_CHROMIUM_PATH (#3947)

* test(browse): failing tests for #3907 (handoff ignores GSTACK_CHROMIUM_PATH; bundled Chromium predates CVE-2026-106378 fix)

Co-authored-by: capy-ai[bot] <230910855+capy-ai[bot]@users.noreply.github.com>

* fix(browse): handoff honors GSTACK_CHROMIUM_PATH (#3907)

handoff() always launched Playwright's bundled Chromium, so a GSTACK_CHROMIUM_PATH browser dropped back to the bundle at handoff. It now passes executablePath like launch() and launchHeaded(), skips the poisoned-bundle probe and XProtect heal for a custom path, and never loads the extension into a build that bakes it in.

Co-authored-by: merit-blake <265362871+merit-blake@users.noreply.github.com>
Co-authored-by: capy-ai[bot] <230910855+capy-ai[bot]@users.noreply.github.com>

* fix(deps): Playwright 1.64.1 (Chromium 156) for CVE-2026-106378 (#3907)

Playwright 1.62.1 bundled Chromium 151.0.7922.34, which lacks the macOS GPU-process TCC fix (Chromium 0c2f3e54b265, crbug.com/507596239). 1.64.1 bundles 156.0.8078.4, which has it. The playwright-core patch is regenerated from our 1.62.1 patch: the launch windowsHide and TcpPortRandomizationWin hunks carry over unchanged; the taskkill hunk is dropped because 1.64 passes windowsHide there upstream.

Co-authored-by: merit-blake <265362871+merit-blake@users.noreply.github.com>
Co-authored-by: capy-ai[bot] <230910855+capy-ai[bot]@users.noreply.github.com>

* chore(pregate): map patches/** to the playwright-core patch test

Co-authored-by: capy-ai[bot] <230910855+capy-ai[bot]@users.noreply.github.com>

* test(browse): name the 1.64.1 patch file in the TcpPortRandomizationWin check

Co-authored-by: capy-ai[bot] <230910855+capy-ai[bot]@users.noreply.github.com>

* docs(changelog): fragment for Playwright 1.64.1 and handoff GSTACK_CHROMIUM_PATH (#3907)

Co-authored-by: capy-ai[bot] <230910855+capy-ai[bot]@users.noreply.github.com>

* docs(troubleshooting): GSTACK_CHROMIUM_PATH covers headed browse and handoff

Co-authored-by: capy-ai[bot] <230910855+capy-ai[bot]@users.noreply.github.com>

* test(browse): the retired 1.62.1 patch stays deleted

Co-authored-by: capy-ai[bot] <230910855+capy-ai[bot]@users.noreply.github.com>

---------

Co-authored-by: capy-ai[bot] <230910855+capy-ai[bot]@users.noreply.github.com>
Co-authored-by: merit-blake <265362871+merit-blake@users.noreply.github.com>

.gstack/pregate.json

@@ -4,6 +4,7 @@
   "remote_gate": "bash scripts/ubicloud/pregate-remote.sh",
   "dependencies": {
     ".github/workflows/**": ["test/pregate-selection.test.ts", "test/free-tests-workflow-wiring.test.ts"],
+    "patches/**": ["browse/test/playwright-core-patch.test.ts"],
     "scripts/gen-ship-goldens.ts": ["test/host-config.test.ts"],
     "bun.lock": [],
     ".gitignore": [],