Integrate per-project README content inline and admin structure updates

src/App.css

@@ -257,6 +257,64 @@ h1 {
   color: var(--ink-muted);
 }
 
+.readme-panel a {
+  margin-top: 0.7rem;
+  display: inline-block;
+  color: var(--accent);
+  font-weight: 600;
+  text-decoration: none;
+}
+
+.readme-panel a:hover {
+  text-decoration: underline;
+}
+
+.readme-markdown {
+  margin-top: 0.85rem;
+  border: 1px solid var(--line);
+  border-radius: 10px;
+  padding: 0.9rem;
+  background: var(--surface);
+}
+
+.readme-markdown h1,
+.readme-markdown h2,
+.readme-markdown h3,
+.readme-markdown h4 {
+  margin: 0.8rem 0 0.45rem;
+  line-height: 1.2;
+}
+
+.readme-markdown p,
+.readme-markdown ul,
+.readme-markdown ol {
+  margin: 0.45rem 0;
+}
+
+.readme-markdown code {
+  font-size: 0.85rem;
+}
+
+.readme-markdown pre {
+  overflow-x: auto;
+  padding: 0.55rem;
+  border-radius: 8px;
+  background: var(--chip-bg);
+}
+
+.readme-markdown table {
+  width: 100%;
+  border-collapse: collapse;
+  margin: 0.5rem 0;
+}
+
+.readme-markdown th,
+.readme-markdown td {
+  border: 1px solid var(--line);
+  padding: 0.4rem;
+  text-align: left;
+}
+
 .detail-grid {
   display: grid;
   grid-template-columns: repeat(2, minmax(0, 1fr));