A saved sign-in whose session expired landed on the login page and every route its persona opened timed out; both the
desktop and the phone sign-in now see that and sign in afresh. A route that fails to open leaves its screenshot and
text, as a failed sign-in does. A target's probes stay inside what its scroller shows (a card half under the feed's
top edge was failed for the part out of sight), a failed probe names what it hit, and the element blamed for sideways
scroll is never one inside a nested clipping box, which can't widen the page. The desktop guard reads its probe sizes
as a list.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01LsXgEaXee4GCU1hwYgPJXw
The browser fixture opens phones from Playwright's own device presets (360x800, iPhone SE 375x667, Pixel 7 412x839,
and the Pixel 7 held sideways), with touch, a coarse pointer and reduced motion, and a phone session fails at once if
the page doesn't see a touch screen. Mobile/fit.js measures a page one screen at a time down its main scroller:
sideways scroll, boxes past the screen's sides, open menus and dialogs cut or outside the screen, targets without a
44px hit area (hit-tested at their centre and 21px around it, so a crowding neighbour fails them too) and control text
under 12px. RouteSweepTests runs every feed tab, threads of each kind the town holds, profiles, search, Explore,
lists, groups, filters, scheduled posts, settings and administration (every section opened) and the login page on the
three portrait phones, as client.mobile.fit.* and client.mobile.touch.* cells; screenshots, findings and a contact
sheet go to tests/e2e/out/mobile/. DesktopUnchangedTests holds desktop's control sizes. Category=Mobile.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01LsXgEaXee4GCU1hwYgPJXw
thepraandClaude Opus 5.5