fix(profile): give the editor room — three panels instead of a cramped column

The owner's verdict on the first editor was "imprensado", and it was: the
settings shell caps its content at 640px, and the editor put a 360px preview
next to six-column tile grids inside that. Everything was legible and nothing
was usable.

Now it follows the shape of the reference (Discord's profile editor):

  - left, 320px: the list of sections, each showing its current value as a
    mini preview (the nameplate strip, the decorated avatar, the styled name,
    the theme swatch, the effect thumbnail). Picking one replaces the list
    with that section's editor, with a back arrow — a drill-down instead of
    sub-modals, one level deep.
  - centre: the live card, plus two in-context samples — how the name and tag
    read on a chat line, and the row in the member list with its nameplate.
  - right: the Board as others see it, with an Edit shortcut.

Tiles went from 5–6 per row to 2–3, with real size (Gg samples at 26px,
decorations on a 56px avatar, effect thumbnails 64px tall). The settings
shell drops its width cap and lets the panel fill the height for this tab
only; every other panel keeps the single reading column. Stacks to one
column below the lg breakpoint.

Verified: web build, 517 web tests. Not verified: pixels — there is no
browser here, so the proportions are from the reference and the numbers, and
a screenshot decides.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

packages/web/src/i18n/locales/en.ts

@@ -1141,6 +1141,21 @@ export const en = {
   'profile.widgets.rotation': 'Games in Rotation',
   'profile.widgets.wishlist': 'Want to Play',
   'profile.widgets.empty': 'Nothing on the board yet.',
+  // Profile editor — three-panel layout
+  'profile.section.nameplate': 'Nameplate',
+  'profile.section.avatar': 'Avatar & Decoration',
+  'profile.section.name': 'Display Name Style',
+  'profile.section.theme': 'Theme',
+  'profile.section.effect': 'Profile Effect',
+  'profile.section.identity': 'Pronouns & Tag',
+  'profile.section.links': 'Links',
+  'profile.section.board': 'Board',
+  'profile.editor.back': 'Back',
+  'profile.editor.items': 'items',
+  'profile.editor.inChat': 'In chat',
+  'profile.editor.inChat.sample': 'does anyone read this?',
+  'profile.editor.inMembers': 'In the member list',
+  'profile.editor.editBoard': 'Edit',
 } as const;
 
 export type TranslationKey = keyof typeof en;