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/components/reports/AllocationReport.tsx

@@ -63,7 +63,7 @@ export function AllocationReport({ title, generatedAt, rows }: AllocationReportP
           ))}
         </View>
 
-        <Text style={styles.footer}>Planarchy · Confidential · {rows.length} allocations</Text>
+        <Text style={styles.footer}>plANARCHY · Confidential · {rows.length} allocations</Text>
       </Page>
     </Document>
   );