feat: add A-card operations frontend and backend foundation

frontend/app/app.css

@@ -48,6 +48,26 @@
   --spacing-gap-md: 9px;
 }
 @theme inline {
+  /* shadcn 语义色映射：STYLE_GUIDE §2.6 */
+  --color-background: var(--color-bg);
+  --color-foreground: var(--color-ink);
+  --color-card: var(--color-bg-panel);
+  --color-card-foreground: var(--color-ink);
+  --color-popover: var(--color-bg-panel);
+  --color-popover-foreground: var(--color-ink);
+  --color-primary: var(--color-brand);
+  --color-primary-foreground: #ffffff;
+  --color-secondary: var(--color-line-soft);
+  --color-secondary-foreground: var(--color-ink);
+  --color-muted: var(--color-line-soft);
+  --color-muted-foreground: var(--color-ink-muted);
+  --color-accent: var(--color-brand-soft);
+  --color-accent-foreground: var(--color-brand-strong);
+  --color-destructive: var(--color-danger);
+  --color-border: var(--color-line);
+  --color-input: var(--color-line-soft);
+  --color-ring: var(--color-brand);
+
   --color-sidebar: var(--sidebar-background);
   --color-sidebar-foreground: var(--sidebar-foreground);
   --color-sidebar-primary: var(--sidebar-primary);
@@ -273,6 +293,35 @@
   }
 }
 
+@media print {
+  body.printing-operations-report {
+    min-width: 0;
+    overflow: visible;
+    background: var(--color-bg-panel);
+  }
+
+  body.printing-operations-report * {
+    visibility: hidden !important;
+  }
+
+  body.printing-operations-report .operations-report-document,
+  body.printing-operations-report .operations-report-document * {
+    visibility: visible !important;
+  }
+
+  body.printing-operations-report .operations-report-document {
+    position: absolute;
+    inset: 0;
+    width: 100%;
+    overflow: visible;
+    box-shadow: none;
+  }
+
+  body.printing-operations-report [data-slot="button"] {
+    display: none !important;
+  }
+}
+
 /* Shared UI classes still used by admin / schedules pages */
 .icon-button {
   display: grid;
@@ -300,4 +349,4 @@
   background: linear-gradient(145deg, #3b92ed, #1869c9);
   font-size: 14px;
   font-weight: 700;
-}
+}