fix(fonts): explicit font-family on title utilities + cascade conflicts

Реальные измерения через DevTools на staging выявили 3 бага после MR !47:

Bug 1: text-title-md/lg/xl inherited Tektur от @nstart/ui Card parent.
  Handoff: 'Inter for all headings'. Computed: Tektur.
  Fix: добавил font-family: var(--font-sans) explicit на text-title-*
  и text-body/text-cell. После Stage 3.9 (nstart gone) можно убрать —
  body inherit будет достаточно.

Bug 2: text-cap + font-mono cohabit (catalog scope chips, time-travel
  presets) → Tailwind v4 cascade order: font-mono идёт после text-cap
  в bundled CSS → JetBrains Mono перебивает Tektur. text-cap baked
  font-display, font-mono token redundant.
  Fix: codemod strip font-mono где есть text-cap (4 sites). Computed
  font-family теперь правильно Tektur.

Bug 3: @nstart/ui PageHeader рендерил h1 'DICTIONARIES' в Tektur
  36px/700 uppercase (font-primary text-4xl). Handoff page title:
  17px/600 Inter normal case. Наш src/ui/components/page-header.tsx
  написан но не экспортирован через barrel — все routes резолвили
  PageHeader к nstart версии.
  Fix: добавил 'export { PageHeader }' override в src/ui/index.ts.
  Все 7 PageHeader usages (catalog/search/reviews/webhooks/outbox/
  my-drafts/graph) теперь получат handoff-conformant heading.

Bug 4 (small): catalog counter '37/37' использовал text-cap но это
  numeric value — handoff role text-mono (11px JetBrains Mono).
  Fix: text-cap → text-mono + tabular-nums для grid alignment.

Verified via injected test elements + CDP computed styles:
  text-title-xl: 22/600 Inter
  text-title-lg: 17/600 Inter
  text-title-md: 15/600 Inter
  text-body:     13/400 Inter
  text-cell:     12.5/500 Inter
  text-mono:     11/500 JetBrains Mono
  text-cap:      10.5/600 Tektur

Все 7 utilities точно matches handoff scale.

Files: 4 modified. TS strict + 116 tests pass.

ordinis-admin-ui/src/routes/dictionaries.index.tsx

@@ -253,7 +253,7 @@ function DictionariesPage() {
           />
         </div>
 
-        <span className="text-cap text-mute whitespace-nowrap font-mono">
+        <span className="text-mono text-mute whitespace-nowrap tabular-nums">
           {filtered.length}/{data.length}
         </span>
 
@@ -273,7 +273,7 @@ function DictionariesPage() {
                 onClick={() => toggleScope(scope)}
                 aria-pressed={selected}
                 title={t(`dict.list.section.${scope}`)}
- className={`text-cap px-2 py-1 rounded-full flex items-center gap-1 border transition focus:outline-none focus:ring-2 focus:ring-accent/40 font-mono ${
+ className={`text-cap px-2 py-1 rounded-full flex items-center gap-1 border transition focus:outline-none focus:ring-2 focus:ring-accent/40 ${
                   selected
                     ? 'border-accent bg-accent-bg text-accent'
                     : 'border-line hover:border-accent/60 text-ink'
@@ -321,7 +321,7 @@ function DictionariesPage() {
                   type="button"
                   onClick={() => setBundle(selected ? undefined : bundle)}
                   aria-pressed={selected}
- className={`text-cap px-2 py-1 rounded-sm flex items-center gap-1 border transition focus:outline-none focus:ring-2 focus:ring-accent/40 font-mono ${
+ className={`text-cap px-2 py-1 rounded-sm flex items-center gap-1 border transition focus:outline-none focus:ring-2 focus:ring-accent/40 ${
                     selected
                       ? 'border-accent bg-accent-bg text-accent'
                       : 'border-line hover:border-accent/60 text-ink'