acg-website: remove Paper/Ledger skin, set Bold as default

- CSS: Bold tokens now at :root (bone/near-black palette, signal orange)
- JS: skin switcher cycles Bold/Midnight/Verdigris (default: bold)
- HTML: all 7 pages default to bold skin
- Docs: README + DESIGN.md rewritten for Bold design language
- Deployment: live at ww9.azcomputerguru.com (IX hosting, grey-cloud DNS)

Paper/Sonoran Ledger skin dropped per user direction. Single-page ledger
version in root retained as archived reference pattern.

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

projects/acg-website-showcase/multipage/js/app.js

@@ -47,11 +47,11 @@
     else if (mq.addListener) mq.addListener(onChange);
   }
 
-  /* ---- Skin (Paper / Midnight / Verdigris) ----------------------------- */
+  /* ---- Skin (Bold / Midnight / Verdigris) ------------------------------ */
   var skinToggle = $("#skinToggle");
   var SKIN = "acg-skin";
-  var SKINS = ["ledger", "midnight", "verdigris", "bold"];
-  var SKIN_NAME = { ledger: "Paper", midnight: "Midnight", verdigris: "Verdigris", bold: "Bold" };
+  var SKINS = ["bold", "midnight", "verdigris"];
+  var SKIN_NAME = { bold: "Bold", midnight: "Midnight", verdigris: "Verdigris" };
   // Verdigris uses its own cooler documentary photography.
   var VERDIGRIS_IMG = {
     "assets/images/hero.png": "assets/images/verdigris/hero.png",
@@ -69,7 +69,7 @@
     });
   }
   function applySkin(skin) {
-    if (SKINS.indexOf(skin) < 0) skin = "ledger";
+    if (SKINS.indexOf(skin) < 0) skin = "bold";
     root.setAttribute("data-skin", skin);
     swapSkinImages(skin);
     if (skinToggle) {
@@ -78,8 +78,8 @@
       skinToggle.setAttribute("title", "Skin: " + name + " (click to switch)");
     }
   }
-  var savedSkin = "ledger";
-  try { savedSkin = localStorage.getItem(SKIN) || "ledger"; } catch (e) {}
+  var savedSkin = "bold";
+  try { savedSkin = localStorage.getItem(SKIN) || "bold"; } catch (e) {}
   applySkin(savedSkin);
   if (skinToggle) {
     skinToggle.addEventListener("click", function () {