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

dash-overview.html

@@ -65,7 +65,6 @@
       <p class="rounded-lg px-3 py-1.5 font-semibold text-white/75 hover:bg-white/10 hover:text-white">Procurement</p>
       <div class="ml-3 mt-0.5 space-y-0.5 border-l border-white/10">
         <a href="./po-list.html" class="block rounded-r-lg py-1.5 pl-3 pr-2 text-xs text-white/65 hover:bg-white/10 hover:text-white">Purchase Order</a>
-        <a href="./mr-list.html" class="block rounded-r-lg py-1.5 pl-3 pr-2 text-xs text-white/65 hover:bg-white/10 hover:text-white">Material Request</a>
         <a href="./pr-list.html" class="block rounded-r-lg py-1.5 pl-3 pr-2 text-xs text-white/65 hover:bg-white/10 hover:text-white">Purchase Requisition</a>
         <a href="./po-matching.html" class="block rounded-r-lg py-1.5 pl-3 pr-2 text-xs text-white/65 hover:bg-white/10 hover:text-white">3-Way Matching</a>
 
@@ -202,7 +201,6 @@
     </table>
   </div>
     </article>    <article class="rounded-xl border border-[var(--scm-border)] bg-white p-5 shadow-sm">
-      <div class="flex flex-wrap items-center justify-between gap-3 mb-4"><h2 class="text-base font-bold">Quick Links</h2></div><div class="grid grid-cols-2 gap-2"><a href="./po-list.html" class="rounded-lg border border-[var(--scm-border)] bg-[var(--scm-primary-bg)] px-4 py-3 text-sm font-semibold text-[var(--scm-primary)] hover:bg-blue-100">Purchase Orders</a><a href="./mr-list.html" class="rounded-lg border border-[var(--scm-border)] bg-[var(--scm-primary-bg)] px-4 py-3 text-sm font-semibold text-[var(--scm-primary)] hover:bg-blue-100">Material Requests</a><a href="./rcv-list.html" class="rounded-lg border border-[var(--scm-border)] bg-[var(--scm-primary-bg)] px-4 py-3 text-sm font-semibold text-[var(--scm-primary)] hover:bg-blue-100">Goods Receipt</a><a href="./inv-stock-overview.html" class="rounded-lg border border-[var(--scm-border)] bg-[var(--scm-primary-bg)] px-4 py-3 text-sm font-semibold text-[var(--scm-primary)] hover:bg-blue-100">Stock Overview</a></div>
     </article></div>
       </main>
     </div>