feat(webui): add interactive particle hero background

THIRD_PARTY_NOTICES.md

@@ -5,6 +5,46 @@ nanobot Python distribution (`pip install nanobot-ai`).
 
 ---
 
+## Canvas UI Particle Object — WebUI particle background (MIT + Commons Clause)
+
+- **Source**: https://github.com/DavidHDev/canvas-ui
+- **Bundled**: `webui/src/components/canvasui/ParticleObject.tsx` and the compiled
+  `nanobot/web/dist/assets/ParticleObject-*.js`
+- **Modifications**: adapted for nanobot's React WebUI, pointer interaction, reduced-motion
+  behavior, and mobile scrolling
+
+```
+MIT + Commons Clause License Condition v1.0
+
+Copyright (c) 2026 David Haz
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, and distribute the Software as part of
+an application, website, or product, subject to the following conditions:
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+Commons Clause Restriction
+
+You may use this Software, including for any commercial purpose, so long as
+you do not sell, sublicense, or redistribute the components themselves -
+whether alone, in a bundle, or as a ported version.
+
+No Warranty
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+```
+
+---
+
 ## Tabler Icons — interface icons (MIT)
 
 - **Source**: https://github.com/tabler/tabler-icons

webui/package.json

@@ -34,7 +34,8 @@
     "remark-gfm": "^4.0.0",
     "remark-math": "^6.0.0",
     "streamdown": "2.5.0",
-    "tailwind-merge": "^2.6.0"
+    "tailwind-merge": "^2.6.0",
+    "three": "^0.185.1"
   },
   "devDependencies": {
     "@eslint/js": "^10.0.1",
@@ -47,6 +48,7 @@
     "@types/react": "^18.3.18",
     "@types/react-dom": "^18.3.5",
     "@types/react-syntax-highlighter": "^15.5.13",
+    "@types/three": "^0.185.1",
     "@vitejs/plugin-react": "^4.3.4",
     "@vitest/coverage-v8": "2.1.9",
     "autoprefixer": "^10.4.20",