Work the design critique down: chapter format, colour law, search, strip, a11y (#11)

Two rounds of design-critique fixes on the web UI. Every visual change was verified at 390x844 and 1280x900 in both dark and light with screenshots; `go test ./...` is green throughout; no new dependencies.

## Earlier commits on this branch

The two oldest commits predate this session and were never opened as their own PR, so they are under review here too:

- Confirm-gate the lifecycle actions, cluster the action strip by consequence.
- Fix the accessibility findings from the audit: contrast, focus, reduced motion.

## The rest

**Chapter format.** The userscript and the poller both write `"Chapter N"`, and the templates prefixed `Ch ` again, so every real Asura row read `Ch Chapter 250` — while a manual edit stored a bare `250`, leaving two formats in one list. `DisplayChapter`/`DisplayLatest` on `Bookmark` now strip the lead-in and re-add exactly one `Ch `.

**Zero-result search.** The client filter only toggled `card.hidden`, so a query matching nothing left a blank list under a fully populated, unfiltered "Continue reading" strip. There is now a no-match state with a Clear-search button, and the strip goes down while a filter is active.

**The colour law.** `--ember` is documented as meaning "new chapter" and was spent on eight things, including setting "Nothing new." in the colour reserved for new chapters. Destruction moves to a new `--danger` token; text-input focus follows the searchbar idiom and turns `--paper`. Contrast, both themes: `--danger` on the page 4.82 / 6.65, the solid Remove button 4.94 / 7.30, the confirm question 9.00 / 7.98.

**The remove confirm.** Buttons 40px 8px apart became 46px 12px apart, and the question names the series and the loss instead of asking "Remove this?". It opens with **Cancel** focused, not Remove — the two reversible rows still open on their affirmative.

**The recent strip.** It was the head of the same `updated_at DESC` list rendered directly below it, on every tab, costing ~240px of the first phone screen. It is now scoped to series with a chapter waiting, and only on All. With nothing new anywhere it does not render — deliberate.

**Stale chrome.** The strip and the Updated badge describe the whole library but live outside the swapped `#list`, so archiving a series left it under "Continue reading" with the badge still counting it, and `/?tab=all` reached by htmx differed from the same URL reloaded. Both regions move into `chrome.html` and refresh out of band on every mutation and every tab switch.

**Accessibility and touch.** Esc closes any open panel and returns focus to the cell that owns it; opening a confirm moves focus into it; the inline error scrolls into view and no longer self-destructs after 5s; every tab and desktop action cell clears 44px; `role="alert"` on the login error; the card monogram is no longer announced; the busy bar is clipped by its own travel rather than by `overflow: hidden` on the card.

**Chapter form label.** The panel's only visible text named the published chapter while the field held your progress. The field gets a real label; "Latest known" moves below it.

**gzip.** Nothing was compressed. A stdlib middleware handles the four text types and leaves woff2 alone: style.css 21.8 -> 6.5 KB, htmx 50.9 -> 16.4, filter.js 7.6 -> 2.9.

## Not addressed

The `role="status"` error slot is still mutated while hidden and then revealed, which is the non-announcing pattern the confirm rows were fixed for. Delete is still a silent vanish. Both are flagged in the critique snapshot under `.impeccable/critique/`.

Design health went 24/36 (66.7%) to 29/40 (72.5%) between snapshots; the two P1s that survived were found and fixed after that run.

Reviewed-on: #11
Co-authored-by: Sulthan Zaki <sultankiki05@gmail.com>
Co-committed-by: Sulthan Zaki <sultankiki05@gmail.com>

CLAUDE.md

@@ -38,6 +38,21 @@ Bromite userscript (isolated world, per-site adapters, localStorage cache)
   the web routes are not registered at all. UI mutations read-modify-write
   through `Store.Get` + `Store.Upsert` so the `updated_at` rule stays in one
   place. See `docs/superpowers/specs/2026-07-25-web-ui-design.md`.
+  **Design-tool caveat:** the templates link `/static/style.css` root-absolutely
+  (correct — they are served from `/`), but the impeccable detector resolves a
+  stylesheet href with `path.resolve(fileDir, href)`, which drops the directory
+  on a leading `/` and silently skips the file. A relative href does not help
+  either: the template's directory is not its served path. So
+  `detect.mjs backend/templates` reports a **false clean** — always pass
+  `backend/static` too. Its one finding there, `overused-font` on "Instrument
+  Serif", is a deliberate identity choice, not debt.
+- **Every action that moves a series out of the list is confirm-gated.**
+  Archive, finish, and remove each open their own `.confirm-row` disclosure
+  (`toggleConfirmRow(key, kind)` in `filter.js`, `kind` ∈
+  `archive|finish|remove`); restore fires instantly because it is the reversal.
+  Remove's row wears the ember wash, the two reversible ones wear `.calm` grey.
+  `--ember` stays reserved for the new-chapter signal: busy bar and inline
+  error use `--mute`.
 - **Latest-chapter poller:** a ticker goroutine in the same binary re-checks
   each bookmarked series' newest published chapter from the backend's own
   network access, so `latest_chapter` stays fresh when the user is not