feat(ui): complete phase 4 Poyraz UI foundation

package.json

@@ -17,36 +17,24 @@
     "phase2:domain-smoke": "node scripts/phase2-domain-smoke.mjs",
     "phase3:storage-smoke": "node scripts/phase3-storage-smoke.mjs",
     "phase2:smoke": "node scripts/phase2-auth-smoke.mjs",
-    "phase3:ui-boundary": "node scripts/phase3-ui-boundary.mjs"
+    "phase4:ui-boundary": "node scripts/phase4-ui-boundary.mjs"
   },
   "dependencies": {
     "@ai-sdk/google": "^3.0.80",
     "@ai-sdk/groq": "^3.0.39",
     "@ai-sdk/openai": "^3.0.68",
     "@ai-sdk/react": "^3.0.199",
-    "@base-ui/react": "^1.5.0",
     "@dnd-kit/core": "^6.3.1",
     "@dnd-kit/sortable": "^10.0.0",
     "@dnd-kit/utilities": "^3.2.2",
     "@ducanh2912/next-pwa": "^10.2.9",
     "@hookform/resolvers": "^5.4.0",
-    "@iconify/react": "^6.0.2",
-    "@radix-ui/react-alert-dialog": "^1.1.15",
-    "@radix-ui/react-checkbox": "^1.3.3",
-    "@radix-ui/react-dialog": "^1.1.15",
-    "@radix-ui/react-dropdown-menu": "^2.1.16",
-    "@radix-ui/react-label": "^2.1.8",
-    "@radix-ui/react-select": "^2.2.6",
-    "@radix-ui/react-separator": "^1.1.8",
-    "@radix-ui/react-slot": "^1.2.4",
-    "@radix-ui/react-toast": "^1.2.15",
     "@supabase/ssr": "^0.10.3",
     "@supabase/supabase-js": "^2.105.3",
     "@tailwindcss/postcss": "^4.3.0",
     "ai": "^6.0.197",
     "better-auth": "^1.6.23",
     "better-sqlite3": "^12.11.1",
-    "class-variance-authority": "^0.7.1",
     "clsx": "^2.1.1",
     "date-fns": "^4.4.0",
     "dexie": "^4.4.3",
@@ -54,15 +42,13 @@
     "drizzle-orm": "^0.45.2",
     "framer-motion": "^11.18.2",
     "lucide-react": "^1.17.0",
+    "mermaid": "^11.16.0",
     "next": "^16.2.7",
-    "next-themes": "^0.4.6",
-    "poyraz-ui": "^2.1.0",
-    "radix-ui": "^1.4.3",
+    "poyraz-ui": "^3.0.2",
     "react": "^19.2.7",
     "react-dom": "^19.2.7",
     "react-hook-form": "^7.77.0",
     "recharts": "^3.8.1",
-    "shadcn": "^4.10.0",
     "tailwind-merge": "^3.6.0",
     "tailwindcss-animate": "^1.0.7",
     "uuid": "^14.0.0",