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/(app)/estimates/EstimatesClient.tsx

@@ -5,6 +5,7 @@ import Link from "next/link";
 import { EstimateStatus, type EstimateVersionStatus } from "@planarchy/shared";
 import { clsx } from "clsx";
 import { EstimateWizard } from "~/components/estimates/EstimateWizard.js";
+import { InfoTooltip } from "~/components/ui/InfoTooltip.js";
 import { usePermissions } from "~/hooks/usePermissions.js";
 import { formatDateLong, formatMoney } from "~/lib/format.js";
 import { trpc } from "~/lib/trpc/client.js";
@@ -121,7 +122,7 @@ function EstimateDetailPanel({
       <div className="flex items-start justify-between gap-4">
         <div>
           <p className="text-xs font-semibold uppercase tracking-[0.2em] text-gray-400">
-            Estimate detail
+            Estimate detail <InfoTooltip content="Pre-project cost and effort calculation. Estimates model staffing demand, scope, and financials before work begins." />
           </p>
           <h2 className="mt-2 text-xl font-semibold text-gray-900 dark:text-gray-50">
             {estimate.name}
@@ -205,7 +206,7 @@ function EstimateDetailPanel({
             <section>
               <div className="flex items-center justify-between">
                 <h3 className="text-sm font-semibold text-gray-900 dark:text-gray-100">
-                  Scope items
+                  Scope items <InfoTooltip content="Deliverables or work packages that define what is included in this estimate." />
                 </h3>
                 <span className="text-xs text-gray-400">{latestVersion.scopeItems.length}</span>
               </div>
@@ -238,7 +239,7 @@ function EstimateDetailPanel({
             <section>
               <div className="flex items-center justify-between">
                 <h3 className="text-sm font-semibold text-gray-900 dark:text-gray-100">
-                  Demand lines
+                  Demand lines <InfoTooltip content="Staffing demand rows. Each line represents a role or resource with hours, cost rate, and sell rate." />
                 </h3>
                 <span className="text-xs text-gray-400">{latestVersion.demandLines.length}</span>
               </div>
@@ -344,13 +345,13 @@ function EstimateCard({
 
       <div className="mt-5 grid gap-3 sm:grid-cols-2">
         <div>
-          <p className="text-xs uppercase tracking-wide text-gray-400">Opportunity</p>
+          <p className="text-xs uppercase tracking-wide text-gray-400">Opportunity <InfoTooltip content="External CRM or sales reference ID linking this estimate to a sales opportunity." /></p>
           <p className="mt-1 text-sm text-gray-700 dark:text-gray-200">
             {estimate.opportunityId ?? "Not set"}
           </p>
         </div>
         <div>
-          <p className="text-xs uppercase tracking-wide text-gray-400">Updated</p>
+          <p className="text-xs uppercase tracking-wide text-gray-400">Updated <InfoTooltip content="When this estimate or any of its versions was last modified." /></p>
           <p className="mt-1 text-sm text-gray-700 dark:text-gray-200">
             {formatDateLong(estimate.updatedAt)}
           </p>
@@ -465,7 +466,7 @@ export function EstimatesClient() {
               No estimates yet
             </p>
             <p className="mt-2 text-sm text-gray-400 dark:text-gray-500">
-              Start with the wizard to create a connected estimate from Planarchy data.
+              Start with the wizard to create a connected estimate from plANARCHY data.
             </p>
           </div>
         ) : (