fix(theseus/bookmarks): brand-case .x TLD labels (theseus.x → Theseus.X)

Bookmark chip labels now normalise the .x TLD family to <Name>.X on
render:
  theseus.x      -> Theseus.X
  deviant.x      -> Deviant.X
  Sirius.x       -> Sirius.X
  foo-bar.x      -> Foo-bar.X
Names that were already ALL-CAPS keep their form so the visual weight
carries through:
  GAME.X         -> GAME.X (unchanged)
  SILENTMODE.X   -> SILENTMODE.X (unchanged)
Non-.x titles are untouched (CoinSpectrum, navigate.st, etc.). The
transformation runs after the descriptor trim, so titles like
'theseus.x — the browser…' also come out 'Theseus.X'.

chrome.html

@@ -810,11 +810,25 @@
   // leading brand token, so trim at the first em-dash / en-dash / hyphen
   // that's surrounded by whitespace. The full title still shows on hover
   // (tooltip below) so the descriptor isn't actually lost.
+  //
+  // Brand-case normalisation for Silent Mode's .x TLD family: user's
+  // bookmark titles come in whatever case the site set (theseus.x saves
+  // as "theseus.x", game.x as "GAME.X"). Uniform on the chip: <Name>.X,
+  // but names that were already all-caps ("GAME") keep their form so
+  // they don't accidentally lose emphasis to Title-case.
+  function bookmarkBrandCase(label) {
+    const m = label.match(/^([a-zA-Z][a-zA-Z0-9-]*)\.x$/i);
+    if (!m) return label;
+    const name = m[1];
+    const isAllCaps = name === name.toUpperCase() && /[A-Z]/.test(name);
+    const cased = isAllCaps ? name : (name.charAt(0).toUpperCase() + name.slice(1).toLowerCase());
+    return cased + ".X";
+  }
   function bookmarkShortLabel(title, url) {
     const src = (title || url || "").trim();
     if (!src) return "";
-    const cut = src.split(/\s+[—–-]\s+/, 1)[0];
+    const cut = (src.split(/\s+[—–-]\s+/, 1)[0] || src);
-    return cut || src;
+    return bookmarkBrandCase(cut);
   }
   function renderBookmarks() {
     const box = $("bookmarks");

package.json

@@ -1,6 +1,6 @@
 {
   "name": "theseus-navigator",
-  "version": "0.3.41",
+  "version": "0.3.42",
   "description": "Theseus Navigator — a browser that follows the thread. By Silent Mode, a Deviant project.",
   "author": "Silent Mode",
   "main": "main.js",