feat: add routing with MainPage (full-screen 3D) and DetailsPage

- Add react-router-dom for routing
- Create MainPage with full-screen 3D demo viewport
- Create DetailsPage with all existing documentation blocks
- Create demoPlaylist.ts with 8 showcase cases
- Add styles for main page HUD, controls, progress bar
- Routes: / → MainPage, /details → DetailsPage, * → redirect to /

package-lock.json

@@ -13,6 +13,7 @@
         "@vitejs/plugin-react": "latest",
         "react": "latest",
         "react-dom": "latest",
+        "react-router-dom": "^7.18.1",
         "three": "^0.185.1",
         "typescript": "latest",
         "vite": "latest"
@@ -832,6 +833,19 @@
       "dev": true,
       "license": "MIT"
     },
+    "node_modules/cookie": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/cookie/-/cookie-1.1.1.tgz",
+      "integrity": "sha512-ei8Aos7ja0weRpFzJnEA9UHJ/7XQmqglbRwnf2ATjcB9Wq874VKH9kfjjirM6UhU2/E5fFYadylyhFldcqSidQ==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=18"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/express"
+      }
+    },
     "node_modules/cross-env": {
       "version": "7.0.3",
       "resolved": "https://registry.npmjs.org/cross-env/-/cross-env-7.0.3.tgz",
@@ -1444,6 +1458,44 @@
         "react": "^19.2.7"
       }
     },
+    "node_modules/react-router": {
+      "version": "7.18.1",
+      "resolved": "https://registry.npmjs.org/react-router/-/react-router-7.18.1.tgz",
+      "integrity": "sha512-GDLgg3i3uM0aeJO3Fm+TCS+sDQ7gu12T6x0qdTEzcwqEfleci7JwugVNIF3U//0FWKnJT7ptG+20B2jfDqnZAg==",
+      "license": "MIT",
+      "dependencies": {
+        "cookie": "^1.0.1",
+        "set-cookie-parser": "^2.6.0"
+      },
+      "engines": {
+        "node": ">=20.0.0"
+      },
+      "peerDependencies": {
+        "react": ">=18",
+        "react-dom": ">=18"
+      },
+      "peerDependenciesMeta": {
+        "react-dom": {
+          "optional": true
+        }
+      }
+    },
+    "node_modules/react-router-dom": {
+      "version": "7.18.1",
+      "resolved": "https://registry.npmjs.org/react-router-dom/-/react-router-dom-7.18.1.tgz",
+      "integrity": "sha512-KaZh+X/6UtEp28x51AUYZDMg9NGoz2ja3dNHa+ta/tk40vCzKhQ/RypCWBMLbmDr6//E24Vv5uPsrqXFozdkAg==",
+      "license": "MIT",
+      "dependencies": {
+        "react-router": "7.18.1"
+      },
+      "engines": {
+        "node": ">=20.0.0"
+      },
+      "peerDependencies": {
+        "react": ">=18",
+        "react-dom": ">=18"
+      }
+    },
     "node_modules/react-use-measure": {
       "version": "2.1.7",
       "resolved": "https://registry.npmjs.org/react-use-measure/-/react-use-measure-2.1.7.tgz",
@@ -1507,6 +1559,12 @@
       "integrity": "sha512-eNv+WrVbKu1f3vbYJT/xtiF5syA5HPIMtf9IgY/nKg0sWqzAUEvqY/xm7OcZc/qafLx/iO9FgOmeSAp4v5ti/Q==",
       "license": "MIT"
     },
+    "node_modules/set-cookie-parser": {
+      "version": "2.7.2",
+      "resolved": "https://registry.npmjs.org/set-cookie-parser/-/set-cookie-parser-2.7.2.tgz",
+      "integrity": "sha512-oeM1lpU/UvhTxw+g3cIfxXHyJRc/uidd3yK1P242gzHds0udQBYzs3y8j4gCCW+ZJ7ad0yctld8RYO+bdurlvw==",
+      "license": "MIT"
+    },
     "node_modules/shebang-command": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/shebang-command/-/shebang-command-2.0.0.tgz",