Add Launcher application template and icon system

registry/components.json

@@ -148,7 +148,37 @@
       "anatomy": ["left brand", "optional left context", "center navigation/workspace", "right actions/profile"],
       "rules": [
         "The logo occupies the same visual position and geometry across applications.",
-        "Product routes and profile content are application data passed into stable slots."
+        "Product routes and profile content are application data passed into stable slots.",
+        "The canonical application header is fixed and preserves the Launcher three-axis logo / navigation / profile positions."
+      ]
+    },
+    {
+      "id": "application-shell",
+      "status": "baseline",
+      "package": "@nodedc/ui-react",
+      "exports": ["ApplicationShell", "ApplicationPanel"],
+      "domContract": ["nodedc-app-shell", "nodedc-application-panel"],
+      "summary": "Launcher-derived application template with fixed header, media stage, left navigation and a separate expandable content window.",
+      "anatomy": ["fixed AppHeader", "stage", "left navigation", "right content window", "expand and close actions"],
+      "behavior": ["navigation shifts stage", "content opens beside navigation", "expanded content replaces stage", "mobile panels use the available viewport sequentially", "independent content scrolling"],
+      "rules": [
+        "The bottom Launcher service rail is product-specific and is not part of the general application template.",
+        "Desktop page gap is 20 px and navigation width follows the Launcher 332–352 px range.",
+        "Applications supply routes, profile data, stage media and panel content without changing shell geometry."
+      ]
+    },
+    {
+      "id": "icon",
+      "status": "baseline",
+      "package": "@nodedc/ui-react",
+      "exports": ["Icon"],
+      "domContract": ["svg using currentColor"],
+      "summary": "Audited semantic icon subset shared by NODE.DC applications instead of product-local vendor imports.",
+      "variants": ["16 px", "18 px", "20 px"],
+      "rules": [
+        "Use semantic names from registry/icons.json.",
+        "The containing component owns surface, hit target and state; the icon owns only the glyph.",
+        "Do not copy complete Lucide or Font Awesome catalogs into an application."
       ]
     },
     {
@@ -161,7 +191,7 @@
       "anatomy": ["eyebrow and title", "close action", "workspace context", "company context", "route items", "footer identity"],
       "rules": [
         "The panel shell, full-bleed pills and icon circles are library geometry; routes and identity data remain application-owned.",
-        "The desktop panel is 352 px wide with a 21.6 px shell radius and opens beside, not over, the main Hub content.",
+        "The desktop panel follows the Launcher 332–352 px width range with a 21.6 px shell radius and a 20 px page gap.",
         "Active route state uses the active surface and icon contrast from the theme."
       ]
     },