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/projects/ProjectDemandsTable.tsx

@@ -69,10 +69,10 @@ export function ProjectDemandsTable({ demands, project }: ProjectDemandsTablePro
           <thead className="bg-gray-50 dark:bg-gray-800/50 border-b border-gray-200 dark:border-gray-700">
             <tr>
               <th className="px-4 py-3 text-left text-xs font-medium text-gray-500 dark:text-gray-400 uppercase tracking-wider">
-                Role
+                Role <InfoTooltip content="The role or skill profile required for this demand position." />
               </th>
               <th className="px-4 py-3 text-left text-xs font-medium text-gray-500 dark:text-gray-400 uppercase tracking-wider">
-                Period
+                Period <InfoTooltip content="Time range during which this role is needed on the project." />
               </th>
               <th className="px-4 py-3 text-right text-xs font-medium text-gray-500 dark:text-gray-400 uppercase tracking-wider">
                 <span className="inline-flex items-center justify-end gap-0.5">
@@ -80,7 +80,9 @@ export function ProjectDemandsTable({ demands, project }: ProjectDemandsTablePro
                 </span>
               </th>
               <th className="px-4 py-3 text-right text-xs font-medium text-gray-500 dark:text-gray-400 uppercase tracking-wider">
-                Hours/Day
+                <span className="inline-flex items-center justify-end gap-0.5">
+                  Hours/Day <InfoTooltip content="Planned working hours per day for this demand position." />
+                </span>
               </th>
               <th className="px-4 py-3 text-right text-xs font-medium text-gray-500 dark:text-gray-400 uppercase tracking-wider">
                 <span className="inline-flex items-center justify-end gap-0.5">
@@ -88,7 +90,7 @@ export function ProjectDemandsTable({ demands, project }: ProjectDemandsTablePro
                 </span>
               </th>
               <th className="px-4 py-3 text-left text-xs font-medium text-gray-500 dark:text-gray-400 uppercase tracking-wider">
-                Status
+                Status <InfoTooltip content="PROPOSED = requested, CONFIRMED = approved, ACTIVE = ongoing, COMPLETED = filled, CANCELLED = removed." />
               </th>
               {canEdit && (
                 <th className="px-4 py-3 text-right text-xs font-medium text-gray-500 dark:text-gray-400 uppercase tracking-wider">