feat: add Tjing course import

Search and import courses with layouts from Tjing's GraphQL API.
Total par is calculated from individual hole data. Courses are saved
with a tjing.se link as unique identifier to prevent duplicates.

public/css/courses.css

@@ -131,3 +131,37 @@
     opacity: 0.6;
     border-style: dashed;
 }
+
+/* ── Tjing Import ────────────────────────────── */
+
+.tjing-result {
+    display: flex;
+    justify-content: space-between;
+    align-items: center;
+    padding: 12px 14px;
+    margin: 6px 0;
+    background: var(--surface-2);
+    border-radius: var(--radius-sm);
+    border: 1px solid var(--border);
+}
+
+.tjing-result-info {
+    display: flex;
+    flex-direction: column;
+    gap: 2px;
+}
+
+.tjing-result-name {
+    font-weight: 600;
+    font-size: 14px;
+    color: var(--text-primary);
+}
+
+.tjing-result-address {
+    font-size: 13px;
+    color: var(--text-secondary);
+}
+
+#tjing-results {
+    margin-top: 12px;
+}