Ship invoice templates, public viewer, and print-ready show page.

Move template/issue editors to full pages, add public invoice SPA with PDF print, and local-aware public URLs.

Co-authored-by: Cursor <cursoragent@cursor.com>

apps/super-admin/src/components/Modal.module.css

@@ -14,6 +14,9 @@
 .modal {
   width: 100%;
   max-width: 520px;
+  max-height: calc(100vh - 40px);
+  display: flex;
+  flex-direction: column;
   background: rgba(255, 255, 255, 0.9);
   backdrop-filter: blur(28px);
   -webkit-backdrop-filter: blur(28px);
@@ -35,12 +38,14 @@
   position: relative;
   padding: 18px 18px 10px;
   border-bottom: 1px solid rgba(148, 163, 184, 0.2);
+  flex-shrink: 0;
 }
 
 .title {
   font-size: 18px;
   font-weight: 700;
   color: var(--text-primary);
+  padding-right: 36px;
 }
 
 .closeBtn {
@@ -64,5 +69,8 @@
 
 .body {
   padding: 18px;
+  overflow: auto;
+  flex: 1;
+  min-height: 0;
 }