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/vacations/TeamCalendar.tsx

@@ -3,6 +3,7 @@
 import { useState } from "react";
 import { VacationStatus } from "@planarchy/shared";
 import { trpc } from "~/lib/trpc/client.js";
+import { InfoTooltip } from "~/components/ui/InfoTooltip.js";
 
 const TYPE_COLOR: Record<string, string> = {
   ANNUAL: "bg-brand-500",
@@ -119,7 +120,7 @@ export function TeamCalendar() {
           <thead>
             <tr className="bg-gray-50 dark:bg-gray-900 border-b border-gray-100 dark:border-gray-700">
               <th className="sticky left-0 z-10 bg-gray-50 dark:bg-gray-900 px-3 py-2 text-left text-xs font-medium text-gray-500 dark:text-gray-400 w-36 border-r border-gray-100 dark:border-gray-700">
-                Resource
+                <span className="inline-flex items-center gap-0.5">Resource<InfoTooltip content="Matrix view: each row is a resource, each column is a calendar day. Colored cells indicate vacation days (color = type, faded = pending)." width="w-72" /></span>
               </th>
               {days.map((d) => {
                 const dateStr = `${year}-${String(month + 1).padStart(2, "0")}-${String(d).padStart(2, "0")}`;