fix(hud): keep localized summary words whole and drop padding

- The proxy keeps combining marks, in-word apostrophes and name dots
  (ar vowel signs, fr d'Orléans, ja ・), normalizes to NFC, caps every
  summary in characters and cuts at a word boundary.
- feedState is nullable instead of a `none` token, and the summary has at
  most five words: "exactly five" made the model pad short views with
  "no data" or "unavailable".
- The HUD caches only the model's words and adds the current warning on
  every paint; an RTL locale gets a leading right-to-left mark.
- The echo check also rejects an all-Latin reply in a non-Latin language,
  translated layer ids and, with every feed healthy, the UNAVAILABLE word;
  places are matched by word and one-word layer names are skipped in
  Latin-script locales.
- The warning tag names the worst layers first; a partial analyst card
  shows one partial chip.

src/voice/resultDisplay.js

@@ -422,7 +422,10 @@ function analystCard(result) {
         ...(result.feedState && result.feedState !== 'nominal'
           ? [{ label: shownFeedState(result.feedState) }]
           : []),
-        ...(result.partial ? [{ label: t('partial') }] : []),
+        // A partial feed state already says it.
+        ...(result.partial && result.feedState !== 'partial'
+          ? [{ label: t('partial') }]
+          : []),
       ],
       // Coverage qualifications lead the feed detail. The bounded card groups
       // overflow in its existing Notes disclosure rather than dropping them.