[eric] ui: sidebar icons -> lucide line-glyphs (dashboard/apps/customize/settings/sidebar-toggle), springy hover

frontend/package-lock.json

@@ -23,6 +23,7 @@
         "codemirror": "^6.0.2",
         "framer-motion": "^12.35.2",
         "html-to-image": "^1.11.13",
+        "lucide-react": "^1.17.0",
         "react": "^18.2.0",
         "react-dom": "^18.2.0",
         "react-markdown": "^10.1.0",
@@ -6710,6 +6711,15 @@
         "yallist": "^3.0.2"
       }
     },
+    "node_modules/lucide-react": {
+      "version": "1.17.0",
+      "resolved": "https://registry.npmjs.org/lucide-react/-/lucide-react-1.17.0.tgz",
+      "integrity": "sha512-9FA9evdox/JQL5PT57fdA1x/yg8T7knJ98+zjTL3UfKza6pflQUUh3XtaQIHKvnsJw1lmsEyHVlt5jchYxOQ5w==",
+      "license": "ISC",
+      "peerDependencies": {
+        "react": "^16.5.1 || ^17.0.0 || ^18.0.0 || ^19.0.0"
+      }
+    },
     "node_modules/markdown-table": {
       "version": "3.0.4",
       "resolved": "https://registry.npmjs.org/markdown-table/-/markdown-table-3.0.4.tgz",