remove MR module, keep only standard SCM modules

MR (Material Request) is specific to MatOne's multi-branch healthcare
model. Standard SCM replaces it with PR (Purchase Requisition) for
external procurement and Stock Transfer for internal moves.

- Delete mr-list.html, mr-create.html, mr-detail.html, mr-approval.html
- Remove MR links from sidebar in all existing files
- Remove MR rows from approval matrix, numbering profile, role matrix
- Remove MR links from index.html

index.html

@@ -52,7 +52,6 @@
 
         <article class="rounded-xl border border-[var(--scm-border)] bg-white p-4 shadow-sm"><h3 class="mb-2 font-bold">Master Data — Facility</h3><div class="space-y-1 text-sm"><a href="./md-warehouse.html" class="block rounded-md border border-[var(--scm-border)] px-3 py-2 font-semibold text-[var(--scm-text)] hover:bg-[var(--scm-bg)]">Warehouse Master</a><a href="./md-warehouse-zone.html" class="block rounded-md border border-[var(--scm-border)] px-3 py-2 font-semibold text-[var(--scm-text)] hover:bg-[var(--scm-bg)]">Warehouse Zones</a><a href="./md-warehouse-bin.html" class="block rounded-md border border-[var(--scm-border)] px-3 py-2 font-semibold text-[var(--scm-text)] hover:bg-[var(--scm-bg)]">Bin Locations</a><a href="./md-transport-mode.html" class="block rounded-md border border-[var(--scm-border)] px-3 py-2 font-semibold text-[var(--scm-text)] hover:bg-[var(--scm-bg)]">Transport Modes</a><a href="./md-bom.html" class="block rounded-md border border-[var(--scm-border)] px-3 py-2 font-semibold text-[var(--scm-text)] hover:bg-[var(--scm-bg)]">Bill of Materials</a></div></article>
 
-        <article class="rounded-xl border border-[var(--scm-border)] bg-white p-4 shadow-sm"><h3 class="mb-2 font-bold">Procurement</h3><div class="space-y-1 text-sm"><a href="./po-list.html" class="block rounded-md border border-[var(--scm-border)] px-3 py-2 font-semibold text-[var(--scm-text)] hover:bg-[var(--scm-bg)]">Purchase Orders</a><a href="./po-approval.html" class="block rounded-md border border-[var(--scm-border)] px-3 py-2 font-semibold text-[var(--scm-text)] hover:bg-[var(--scm-bg)]">PO Approvals</a><a href="./mr-list.html" class="block rounded-md border border-[var(--scm-border)] px-3 py-2 font-semibold text-[var(--scm-text)] hover:bg-[var(--scm-bg)]">Material Requests</a><a href="./mr-approval.html" class="block rounded-md border border-[var(--scm-border)] px-3 py-2 font-semibold text-[var(--scm-text)] hover:bg-[var(--scm-bg)]">MR Approvals</a><a href="./pr-list.html" class="block rounded-md border border-[var(--scm-border)] px-3 py-2 font-semibold text-[var(--scm-text)] hover:bg-[var(--scm-bg)]">Purchase Requisition</a><a href="./po-matching.html" class="block rounded-md border border-[var(--scm-border)] px-3 py-2 font-semibold text-[var(--scm-text)] hover:bg-[var(--scm-bg)]">3-Way Matching</a></div></article>
 
         <article class="rounded-xl border border-[var(--scm-border)] bg-white p-4 shadow-sm"><h3 class="mb-2 font-bold">Receiving &amp; Inventory</h3><div class="space-y-1 text-sm"><a href="./rcv-list.html" class="block rounded-md border border-[var(--scm-border)] px-3 py-2 font-semibold text-[var(--scm-text)] hover:bg-[var(--scm-bg)]">Goods Receipt</a><a href="./inv-stock-overview.html" class="block rounded-md border border-[var(--scm-border)] px-3 py-2 font-semibold text-[var(--scm-text)] hover:bg-[var(--scm-bg)]">Stock Overview</a><a href="./inv-stock-movement.html" class="block rounded-md border border-[var(--scm-border)] px-3 py-2 font-semibold text-[var(--scm-text)] hover:bg-[var(--scm-bg)]">Movement Log</a><a href="./inv-stock-transfer.html" class="block rounded-md border border-[var(--scm-border)] px-3 py-2 font-semibold text-[var(--scm-text)] hover:bg-[var(--scm-bg)]">Transfer</a><a href="./inv-stock-count.html" class="block rounded-md border border-[var(--scm-border)] px-3 py-2 font-semibold text-[var(--scm-text)] hover:bg-[var(--scm-bg)]">Stock Count</a><a href="./inv-aging.html" class="block rounded-md border border-[var(--scm-border)] px-3 py-2 font-semibold text-[var(--scm-text)] hover:bg-[var(--scm-bg)]">Inventory Aging</a></div></article>