localization: ship de-DE

Complete German catalog across all three namespaces, 1129 keys,
machine-translated then reviewed for terminology and plurals.

Fixed on review: "composer" (the chat input box) had been translated
as "Editor" in two shortcuts strings, colliding with this app's actual
Editor/Code-Editor feature — changed to "Eingabefeld". scopeDockers
had drifted from the lowercase, untranslated "dockers" every other
locale (including this one's own pt-PT/fr-FR precedent) uses for that
filter-scope label. All 17 plural entries verified at count 0/1/2 —
German uses the same one/other split as English, so this was mostly
confirming "0 Elemente" reads right, not hunting for a CLDR surprise
the way French needed.

SHIPPED_LOCALES and the three parity tests now include de-DE. es-ES
is drafted and under review — held out of the picker until it passes
its own pass.

src/workspaces/components/locales/parity.test.ts

@@ -3,11 +3,12 @@ import { findMissingKeys } from 'i18n';
 import en from './en-GB.json';
 import ptPT from './pt-PT.json';
 import frFR from './fr-FR.json';
+import deDE from './de-DE.json';
 
 // D2: every shipped locale ships a COMPLETE catalog. A key en-GB has and another locale lacks is a red
 // build, not a warning — there is no regional fallback to paper over the gap.
 describe('shared components (ui.*) locale catalogs', () => {
   test('every shipped locale has every key en-GB has', () => {
-    expect(findMissingKeys(en, { 'pt-PT': ptPT, 'fr-FR': frFR })).toEqual([]);
+    expect(findMissingKeys(en, { 'pt-PT': ptPT, 'fr-FR': frFR, 'de-DE': deDE })).toEqual([]);
   });
 });