fix: complete truncated GeminiPanel template — add chat UI and input bindings

The template was cut off mid-attribute, missing the message list rendering,
chat input with @keyup.enter="handleSend", and send button. This caused
vue-tsc to flag handleSend as unused, breaking CI.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/components/ai/GeminiPanel.vue

@@ -86,5 +86,39 @@ onMounted(checkAuth);
 
     <template v-else>
       <div class="flex-1 overflow-y-auto p-3 space-y-4">
+        <div v-if="messages.length === 0" class="text-center text-[10px] text-[var(--wraith-text-muted)] pt-8">
+          <p class="mb-1">Gemini XO ready.</p>
+          <p>Ask me anything about your sessions.</p>
+        </div>
         <div v-for="(msg, i) in messages" :key="i"
-             :class="[text-xs
+             :class="['text-xs rounded-lg px-3 py-2 max-w-[90%]',
+               msg.role === 'user' ? 'bg-[var(--wraith-accent-blue)]/15 text-[var(--wraith-text-primary)] ml-auto' : '',
+               msg.role === 'model' ? 'bg-[var(--wraith-bg-tertiary)] text-[var(--wraith-text-primary)]' : '',
+               msg.role === 'error' ? 'bg-red-500/15 text-red-400' : '']">
+          {{ msg.content }}
+        </div>
+        <div v-if="loading" class="text-xs text-[var(--wraith-text-muted)] animate-pulse">Thinking...</div>
+      </div>
+
+      <div class="p-3 border-t border-[var(--wraith-border)]">
+        <div class="flex gap-2">
+          <input
+            v-model="input"
+            type="text"
+            placeholder="Ask the XO..."
+            class="flex-1 bg-[var(--wraith-bg-tertiary)] border border-[var(--wraith-border)] rounded px-2 py-1.5 text-xs outline-none focus:border-[var(--wraith-accent-blue)]"
+            @keyup.enter="handleSend"
+            :disabled="loading"
+          />
+          <button
+            @click="handleSend"
+            :disabled="loading || !input.trim()"
+            class="px-3 py-1.5 bg-[var(--wraith-accent-blue)] text-black font-bold rounded text-xs disabled:opacity-40"
+          >
+            &gt;
+          </button>
+        </div>
+      </div>
+    </template>
+  </div>
+</template>