Add scrollable widget, expand/collapse toggle, inline name editing

- Fix overflow by making card body scrollable with thin custom scrollbar
- Add expand/collapse chevron button toggling row-span-1 to row-span-2
- Add inline name editing on hover (pencil icon) with Enter/Escape/blur
- Add PATCH /api/services endpoint for renaming with log history update
- Add rename button in detail modal

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

app/globals.css

@@ -24,3 +24,22 @@ body {
   color: var(--foreground);
   font-family: Arial, Helvetica, sans-serif;
 }
+
+/* Thin scrollbar for widget overflow areas */
+.scrollbar-thin {
+  scrollbar-width: thin;
+  scrollbar-color: #404040 transparent;
+}
+.scrollbar-thin::-webkit-scrollbar {
+  width: 4px;
+}
+.scrollbar-thin::-webkit-scrollbar-track {
+  background: transparent;
+}
+.scrollbar-thin::-webkit-scrollbar-thumb {
+  background: #404040;
+  border-radius: 2px;
+}
+.scrollbar-thin::-webkit-scrollbar-thumb:hover {
+  background: #525252;
+}