feat: project cover art with AI generation, branding rename, RBAC fix, computation graph

- Add DALL-E cover art generation for projects (Azure OpenAI + standard OpenAI)
- CoverArtSection component with generate/upload/remove/focus-point controls
- Client-side image compression (10MB input → WebP/JPEG, max 1920px)
- DALL-E settings in admin panel (deployment, endpoint, API key)
- MCP assistant tools for cover art (generate_project_cover, remove_project_cover)
- Rename "Planarchy" → "plANARCHY" across all UI-facing text (13 files)
- Fix hardcoded canEdit={true} on project detail page — now checks user role
- Computation graph visualization (2D/3D) for calculation rules
- OG image and OpenGraph metadata

Co-Authored-By: claude-flow <ruv@ruv.net>

apps/web/src/app/layout.tsx

@@ -16,8 +16,21 @@ const displayFont = Manrope({
 });
 
 export const metadata: Metadata = {
-  title: "Planarchy — Resource Planning",
+  metadataBase: new URL("https://planarchy.hartmut-noerenberg.com"),
+  title: "plANARCHY — Resource Planning",
   description: "Interactive resource planning and project staffing tool",
+  openGraph: {
+    title: "plANARCHY — Resource Planning",
+    description: "Estimates, staffing, chargeability, and timelines in one workspace.",
+    images: [{ url: "/og-image.png", width: 1024, height: 1024, alt: "plANARCHY Logo" }],
+    type: "website",
+  },
+  twitter: {
+    card: "summary_large_image",
+    title: "plANARCHY — Resource Planning",
+    description: "Estimates, staffing, chargeability, and timelines in one workspace.",
+    images: ["/og-image.png"],
+  },
 };
 
 export default function RootLayout({ children }: { children: React.ReactNode }) {