feat: hide-taken toggle + visible AI contribution (#3, v0.4.0)

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01XStQKxPfEjrTvWo83KFCxG

src/app/globals.css

@@ -292,6 +292,44 @@ h2 {
   border-color: #4a3f1c;
 }
 
+.results-bar {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 12px;
+  flex-wrap: wrap;
+  margin-top: 16px;
+  font-size: 13px;
+  color: var(--muted);
+}
+
+.results-bar + .results {
+  margin-top: 8px;
+}
+
+.results-toggle {
+  display: inline-flex;
+  align-items: center;
+  gap: 6px;
+  cursor: pointer;
+}
+
+.results-toggle input {
+  width: auto;
+}
+
+.ai-badge {
+  display: inline-block;
+  padding: 1px 6px;
+  border-radius: 999px;
+  background: #1f2a3f;
+  color: var(--accent);
+  font-size: 10px;
+  font-weight: 700;
+  letter-spacing: 0.08em;
+  vertical-align: middle;
+}
+
 /* ---------- wishlist ---------- */
 
 .wishlist {