R1: Dashboard 500 fix, Phase 2/7 uncommitted changes

- Fix dashboard 500 when deps disconnected — _gather_state() now returns
  full defaults instead of bare {'connected': False}
- Phase 2: FX param schemas aligned with DSP implementations
- Phase 7: Pipeline routing, preset manager improvements
- Factory presets: cleanup and normalization

Fixes dashboard crash on disconnected state (dogfood issue #1)

ui/package.json

@@ -0,0 +1,35 @@
+{
+  "name": "ui",
+  "private": true,
+  "version": "0.0.0",
+  "type": "module",
+  "scripts": {
+    "dev": "vite",
+    "build": "tsc -b && vite build",
+    "lint": "eslint .",
+    "preview": "vite preview"
+  },
+  "dependencies": {
+    "@radix-ui/react-select": "^2.3.0",
+    "@radix-ui/react-slider": "^1.4.0",
+    "@radix-ui/react-slot": "^1.2.5",
+    "@radix-ui/react-switch": "^1.3.0",
+    "@radix-ui/react-tabs": "^1.1.14",
+    "react": "^19.2.6",
+    "react-dom": "^19.2.6"
+  },
+  "devDependencies": {
+    "@eslint/js": "^10.0.1",
+    "@types/node": "^24.12.3",
+    "@types/react": "^19.2.14",
+    "@types/react-dom": "^19.2.3",
+    "@vitejs/plugin-react": "^6.0.1",
+    "eslint": "^10.3.0",
+    "eslint-plugin-react-hooks": "^7.1.1",
+    "eslint-plugin-react-refresh": "^0.5.2",
+    "globals": "^17.6.0",
+    "typescript": "~6.0.2",
+    "typescript-eslint": "^8.59.2",
+    "vite": "^8.0.12"
+  }
+}