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/estimates/EstimateWorkspaceClient.tsx

@@ -17,6 +17,7 @@ import { StaffingTab } from "~/components/estimates/tabs/StaffingTab.js";
 import { FinancialsTab } from "~/components/estimates/tabs/FinancialsTab.js";
 import { VersionsTab } from "~/components/estimates/tabs/VersionsTab.js";
 import { ExportsTab } from "~/components/estimates/tabs/ExportsTab.js";
+import { InfoTooltip } from "~/components/ui/InfoTooltip.js";
 import { usePermissions } from "~/hooks/usePermissions.js";
 import { formatDateLong } from "~/lib/format.js";
 import { trpc } from "~/lib/trpc/client.js";
@@ -192,7 +193,7 @@ export function EstimateWorkspaceClient({ estimateId }: { estimateId: string })
       <div className="rounded-[28px] border border-gray-200 bg-gradient-to-br from-white via-white to-brand-50 p-6 shadow-sm">
         <div className="flex flex-col gap-5 lg:flex-row lg:items-start lg:justify-between">
           <div>
-            <p className="text-xs font-semibold uppercase tracking-[0.24em] text-brand-600">Estimate Workspace</p>
+            <p className="text-xs font-semibold uppercase tracking-[0.24em] text-brand-600">Estimate Workspace <InfoTooltip content="Central workspace for inspecting and editing an estimate's scope, staffing, financials, and version history." /></p>
             <h1 className="mt-2 text-3xl font-semibold text-gray-900">
               {estimate?.name ?? "Loading estimate"}
             </h1>