Fail an E2E test on anything the browser logs, in all three engines

todo.md

@@ -2,7 +2,6 @@
 
 ## Unfinnished work
 
-- [ ] In Playwright tests, check for warnings and errors in all browsers on all the steps. If they exist, that is a failure we need to fix.
 - [ ] In Playwright tests, try different resolutions and sizes, from BIG desktop down to tiny phone.
 - [ ] 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.
@@ -27,6 +26,7 @@ Prioritized. Overall verdict: architecture is sound (contract-first plugin API,
 
 ## Finnished work
 
+- [x] In Playwright tests, check for warnings and errors in all browsers on all the steps. If they exist, that is a failure we need to fix. (Every spec takes its `test` from `e2e-tests/console-guard.ts`, which watches every page a test opens — `console.error`, `console.warning`, and uncaught page errors — and fails the test that provoked one, at whatever step. The bar is zero rather than a curated tolerance list: the app ships no client JavaScript, so a message means a broken sub-resource, a rejected attribute, or an engine refusing a feature. Two narrow escapes, both explicit: the COOP header Chromium drops because the e2e stacks serve plain http over container hostnames (a deployment serves https, where it applies), and per-test `allowConsole(/…/)` — used once, by the 404 spec, whose own navigation Chromium and WebKit log. **All browsers** is now literal for the Ory-free suites: `visual.spec.ts` + `language.spec.ts` run in Chromium, Firefox *and* WebKit — the per-test `@engines` tag is gone, and screenshots are written per project so the three don't fight over one file — which is what makes an engine-specific message visible at all. The Ory-backed suites write users, groups and sessions to one shared backend, so they stay on Chromium; widening them needs a stack per engine. Nothing in the app had to be fixed: the sweep found only the two above. Verified by negative control — an injected `console.warn` failed the test in all three engines and an injected `console.error` failed on full-flow's shared serial page — which also caught the guard registering that page twice. `src/e2e-console-guard.test.ts` locks the wiring in the *unit* gate, since a spec importing `test` straight from Playwright would run unwatched and green.)
 - [x] Don't run tests when only markdown files in the root have changed. (Already shipped for *any* `*.md`, anywhere in the tree — `ci.sh`'s `docs_only()` no-ops the gate when every path changed since `main` ends in `.md`, and the workflow still pushes the commit-hash image so a merged docs commit stays releasable. Kept wider than "in the root" deliberately: no test reads a markdown file, so a nested `examples/plugins/admin/README.md` edit is as safe to skip as `README.md`, and narrowing it would spend the full gate on one. What was actually broken was rename detection — `git mv src/app.ts notes.md` names only the destination under `git diff --name-only`, and collapses to a single `R src/app.ts -> notes.md` line under `git status --porcelain`, so **moving code onto a `.md` path skipped the gate over a source file that was gone**. Both channels now pass `--no-renames`; verified against a scratch repo across ten scenarios — docs-only, mixed, empty diff, dirty tree, untracked code, deleted doc, and the rename staged *and* committed — the last two failing before the fix and passing after. `src/ci-gate.test.ts` locks both flags; it stays a text guard because the test image is `node:alpine` with neither `git` nor `bash`.)
 - [x] The little menues, like when choosing language or clicking my username, they do not dissapear when clicking outside them, I must click the original trigger or choose something. See if there are more modern ways of handling this with HTML and CSS. I think there is a modal-thing or something? (The modern thing is the **Popover API**. All three popup menus — language picker, profile, row kebab — are now a `<button popovertarget>` plus a `[popover]` panel instead of `<details>`/`<summary>`, so the browser owns open/close: clicking anywhere outside dismisses one, `Esc` dismisses it and returns focus to the trigger, opening one closes the others, and the panel sits in the top layer where `.table-wrap`'s `overflow` can no longer clip a row kebab. Placement is CSS anchor positioning; the panel needs `position-anchor: auto` to bind to the button that opened it — a bare `anchor()` resolves to nothing in Chromium, Firefox and WebKit alike, measured in all three before picking the approach. `data-table.ejs` stopped hand-rolling its kebab and calls the `menu` partial, so the pattern lives in one file. Each panel is named by its caller (`locale-menu`, `profile-menu`, `row-actions-1`) and the partial fails loud without an `id`, since `popovertarget` is an idref — generated ids were tried first and dropped for being unreadable and nondeterministic. `<details>` stays in the nav tree, where it means disclosure rather than popup. A browser older than the popover API flows each panel inline under its trigger, so Sign out is never stranded behind an inert button. `e2e-tests/visual.spec.ts` drives the whole behaviour — opens, anchored to its trigger, outside-click, Esc — and is tagged `@engines` so it runs in Firefox and WebKit as well as Chromium, because CSS anchor positioning is the newest thing in the app and every popup rests on it. Decisions recorded in AGENTS.md.)
 - [x] Organize the files in src in to folders so it is easier to understand the structure of the code.