Add Niteshift Dials SDK for runtime design prototyping

Introduces a complete design dials system that allows designers and PMs
to adjust UI parameters at runtime without code changes.

**Dials SDK (`packages/dials/`):**
- useDynamicColor: Color values with design system integration
- useDynamicSpacing: Spacing/padding/margin controls
- useDynamicVariant: Discrete choice selections
- useDynamicBoolean: Toggle/feature flag controls
- useDynamicNumber: Numeric values with min/max/step
- DialsOverlay: Compact Leva-inspired UI (Ctrl+D to toggle)
- DialsProvider: React context for dial state management
- Design manifest integration for design system tokens

**App Integration:**
- Added DialsProvider to app Providers
- Example dials on WebsitePage (metrics bar, panels, navigation)
- MetricCard component with adjustable typography dials
- TypeScript manifest at src/config/niteshift-manifest.ts

**Documentation:**
- Comprehensive CLAUDE.md section on dials usage
- Best practices for preserving original appearance
- Examples for all dial types

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

package.json

@@ -45,6 +45,7 @@
     "change-password": "node scripts/change-password.js",
     "lint": "next lint --quiet",
     "prepare": "node -e \"if (process.env.NODE_ENV !== 'production'){process.exit(1)} \" || husky install",
+    "postinstall": "pnpm --filter @niteshift/dials build",
     "postbuild": "node scripts/postbuild.js",
     "test": "jest",
     "cypress-open": "cypress open cypress run",
@@ -73,6 +74,7 @@
     "@dicebear/core": "^9.2.3",
     "@fontsource/inter": "^5.2.8",
     "@hello-pangea/dnd": "^17.0.0",
+    "@niteshift/dials": "workspace:*",
     "@prisma/adapter-pg": "^6.18.0",
     "@prisma/client": "^6.18.0",
     "@prisma/extension-read-replicas": "^0.4.1",