feat: take every console label at run time, one card-header action and the editor's mode in its header

[rubentalstra]

What changed and why

The three changes of milestone v0.2.0 that the four consoles need before they can move their own strings onto their catalogs and close the 0.1.7 review findings.

• Every console label at run time (Take every console-supplied label as a string made at run time #114). Every text a console hands a component (parameter or field) accepts a string made at run time. Struct fields a reader sees are Cow<'static, str>; label parameters are impl Into<String> (beside form::Field, impl Into<Oco<'static, str>>). table::model::Noun is now a message of the console's catalog, Noun::new(Message::new(catalog, "value-sets")), whose form is chosen by $count and which carries .empty and .opening as whole sentences, so the library holds no English plural rule. The new i18n::Message names such a message. The gallery draws its own page strings from app/ferrohealth-ui-gallery/locales/en/ferrohealth-ui-gallery.ftl (475 messages), its pseudo-locale stretches them with the library's, and the CI stray-literal job covers app/ferrohealth-ui-gallery/src (its synthetic data and server are skipped with their reasons).
• One card-header action (One card-header action for every console #122). view::surface::card_action(href, label): a link in the accent, its words then an arrow a tight space (--space-tight) apart, at the small step, with the sunken ground under the pointer and the focus ring of every control. The winner is FerroFED's text link with an arrow: it is lighter than FerroTERM's outlined button beside a card's title, so the title stays the first thing read, and it now takes the library's hover treatment and spacing, which FerroFED's link lacked (its arrow touched its word). The gallery shows it on the overview ("Recent files", "All files"), and tests/it/states.rs captures its hover and focus in every brand, light and dark.
• The editor's mode in its header (An editor's page header says New when it creates and Edit when it edits #123). view::surface::{Mode, editor_title, editor_heading}: one console message that selects by $mode (new, edit) titles the heading, the trail's last crumb and the document; the title is a sentence, drawn in the body face around the edited thing's name. The gallery shows both on the forms page; tests/it/console.rs pins both.

What a console changes is listed in the CHANGELOG.md entry: the nouns become catalog messages, Column::text is no longer const (keep columns in a function), Listing, Confirmation, Footer, Tab, Upload, Picker and Tree are Clone rather than Copy, navigation groups hold a Vec<Entry> and sidebar takes a Vec<Group>, and the functions that returned impl IntoView + use<> around a label return AnyView. This breaks the public API, so the release is 0.2.0.

No specification governs the catalog layout, the noun's attributes, the card action or the editor's title: our own design. The arrow is decoration beside its words (aria-hidden), and the action keeps the 2 px focus ring (WCAG 2.2 SC 2.4.7).

Closes #114
Closes #122
Closes #123

Licensing of contributions

• I accept the terms in CONTRIBUTING.md § Licensing of contributions: I have the right to submit this work, I license it under the project licence of the version it lands in, and I grant the Licensor the relicensing right stated there.

Checklist

• Accessibility decisions cite WCAG 2.2, WAI-ARIA 1.2 or the Authoring Practices, not memory and not another library.
• Rust gates pass: cargo fmt --all --check, cargo clippy --workspace --all-targets -- -D warnings, the wasm32 clippy runs, cargo nextest run --workspace --locked, cargo doc with RUSTDOCFLAGS=-D warnings, and cargo deny check.
• A visible change refreshed the gallery screenshots, and I looked at every image it changed.
• A new or changed component was compared with the four consoles' versions (docs/qa/), and the best one on its merits was restyled to the library's tokens; the winner and the reason are stated below.
• Its interactive states (pointer, focus, open, each tone) are captured by tests/it/states.rs in every brand, light and dark.
• A release pull request says, per screen and per state, what was checked and what was fixed.
• Shell and workflow files are clean: shellcheck --severity=style, actionlint, zizmor --min-severity=low .github/.
• CHANGELOG.md has an [Unreleased] entry, if a console sees the change.
• No patient data in a fixture, test, gallery row or example.
• Every commit is signed.
• No AI or assistant attribution anywhere in the commits or this PR.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud