feat: support arrow keys for tab switching in /models (#610)

Co-authored-by: Letta <noreply@letta.com>

src/cli/components/ModelSelector.tsx

@@ -234,11 +234,25 @@ export function ModelSelector({
         return;
       }
 
-      if (key.tab) {
+      // Tab or left/right arrows to switch categories
+      if (key.tab || key.rightArrow) {
         cycleCategory();
         return;
       }
 
+      if (key.leftArrow) {
+        // Cycle backwards through categories
+        setCategory((current) => {
+          const idx = MODEL_CATEGORIES.indexOf(current);
+          return MODEL_CATEGORIES[
+            idx === 0 ? MODEL_CATEGORIES.length - 1 : idx - 1
+          ] as ModelCategory;
+        });
+        setSelectedIndex(0);
+        setSearchQuery("");
+        return;
+      }
+
       // Handle backspace for search
       if (key.backspace || key.delete) {
         if (searchQuery) {
@@ -403,7 +417,7 @@ export function ModelSelector({
             refresh
           </Text>
           <Text dimColor>
-            {"  "}Enter select · ↑↓ navigate · Tab switch · Esc cancel
+            {"  "}Enter select · ↑↓ navigate · ←→/Tab switch · Esc cancel
           </Text>
         </Box>
       )}