Record the unpinned Playwright worker pool as an open decision

todo.md

@@ -4,6 +4,7 @@
 
 - [ ] In Playwright tests, try different resolutions and sizes, from BIG desktop down to tiny phone.
 - [ ] Decide whether `e2e-tests/` should be typechecked. It is outside `tsconfig.include`, so the gate never checks the most logic-bearing file in it (`console-guard.ts`) — Playwright strips its types without checking them. Including it needs the DOM lib and `@playwright/test` present wherever `npm run typecheck` runs, which today is the `web` image that installs neither. Raised by review 2026-08-05.
+- [ ] Decide whether Playwright's `workers` should be pinned. It is unset, so Playwright sizes the pool from `os.cpus()`, which reports the host's cores regardless of a container CPU quota — and with `retries: 0` a starved runner turns a slow test straight into a red gate rather than a retry. Fine on the current act_runner; revisit if CI ever runs constrained. Raised by review 2026-08-05.
 - [ ] Record the browser floor Plainpages actually requires, and whether the fallback is the contract or a courtesy. The stylesheet already needs `:has()` (Dec 2023); the menus now need the popover API (Safari 17, Sep 2023) and CSS anchor positioning for placement (newer still, and unguarded — the `@supports` test covers popover only). An iPadOS 16 tablet — capped at Safari 16, and exactly the "tablet on a factory floor, old thin client at a reception desk" README → Overview sells the zero-JS stance on — therefore gets panels flowing inline rather than working menus. Either state a supported floor in the README or accept the fallback as the answer for those devices; nobody has rendered that path on real hardware. Raised by the architecture review 2026-08-05.
 - [ ] Decide whether the profile dropdown still earns a dropdown. With the dead Profile link gone it holds one item, Sign out, behind a click — and its "Signed in as X" head only repeats the name and email the trigger already shows. Either put Sign out in the footer directly, or give the menu a second reason to exist. Overlaps the outside-click item above. Raised by review 2026-08-05.
 - [ ] When copy+paste the verification code from the email, it doesn't work because it does not trim whitechars around the code in the form. It should trim automatically.