docs: document patchright stealth path for Matrix UI capture (work-w1j2r)#28
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…e Matrix UI (work-w1j2r) Headless Chromium can't drive matrix.itasoftware.com: Google's waa-pa bot-attestation blocks it, so the SPA shell loads but the search never fires (the grid just spins). Record the working approach — patchright real Chrome via launch_persistent_context(channel="chrome", headless=False), the same pattern as pp/auth.py:login_via_browser, pre-filling the search with a matrix_deep_link URL — plus the capture gotcha that the SPA routes search through alkalicore/batch, not the direct alkalimatrix/v1/search our client posts to. Saves the next person the cycles we just spent rediscovering it.
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Adds a memory to AGENTS.md (the SPA-capture editing rule): driving the live Matrix UI requires a stealth browser — headless is blocked by Google's
waa-pabot-attestation (the SPA shell loads but the search never fires; the grid just spins).Documents the working path — patchright real Chrome (
launch_persistent_context(channel="chrome", headless=False), same pattern aspp/auth.py:login_via_browser), pre-filling the search with amatrix_deep_linkURL — plus the capture gotcha that the SPA routes its search throughcontent-alkalicore-pa.googleapis.com/batch(multipart), not the directcontent-alkalimatrix-pa.googleapis.com/v1/searchour client uses.Came out of the calendar under-reporting investigation, where I burned cycles rediscovering this. Docs-only.