Remove agent cycling and enhance model selector display

- Remove Tab/Shift+Tab shortcuts for cycling agents
- Remove Next/Previous Agent commands from command palette
- Remove handleCycleAgent and handleCycleAgentReverse functions
- Remove Tab keyboard hint from agent selector UI
- Enhance model selector to show provider/modelId below model name
- Widen model selector button to accommodate additional text

src/App.tsx

@@ -371,26 +371,6 @@ const App: Component = () => {
       },
     })
 
-    commandRegistry.register({
-      id: "next-agent",
-      label: "Next Agent",
-      description: "Cycle to next agent",
-      category: "Agent & Model",
-      keywords: ["agent", "switch", "cycle"],
-      shortcut: { key: "Tab" },
-      action: handleCycleAgent,
-    })
-
-    commandRegistry.register({
-      id: "prev-agent",
-      label: "Previous Agent",
-      description: "Cycle to previous agent",
-      category: "Agent & Model",
-      keywords: ["agent", "switch", "cycle"],
-      shortcut: { key: "Tab", shift: true },
-      action: handleCycleAgentReverse,
-    })
-
     commandRegistry.register({
       id: "open-model-selector",
       label: "Open Model Selector",
@@ -503,54 +483,6 @@ const App: Component = () => {
     commandRegistry.execute(commandId)
   }
 
-  function handleCycleAgent() {
-    const instance = activeInstance()
-    const sessionId = activeSessionIdForInstance()
-    if (!instance || !sessionId || sessionId === "logs") return
-
-    const sessions = getSessions(instance.id)
-    const session = sessions.find((s) => s.id === sessionId)
-    if (!session) return
-
-    const instanceAgents = agents().get(instance.id) || []
-    const availableAgents =
-      session.parentId === null ? instanceAgents.filter((a) => a.mode !== "subagent") : instanceAgents
-
-    if (availableAgents.length === 0) return
-
-    const currentIndex = availableAgents.findIndex((a) => a.name === session.agent)
-    const nextIndex = (currentIndex + 1) % availableAgents.length
-    const nextAgent = availableAgents[nextIndex]
-
-    if (nextAgent) {
-      updateSessionAgent(instance.id, sessionId, nextAgent.name).catch(console.error)
-    }
-  }
-
-  function handleCycleAgentReverse() {
-    const instance = activeInstance()
-    const sessionId = activeSessionIdForInstance()
-    if (!instance || !sessionId || sessionId === "logs") return
-
-    const sessions = getSessions(instance.id)
-    const session = sessions.find((s) => s.id === sessionId)
-    if (!session) return
-
-    const instanceAgents = agents().get(instance.id) || []
-    const availableAgents =
-      session.parentId === null ? instanceAgents.filter((a) => a.mode !== "subagent") : instanceAgents
-
-    if (availableAgents.length === 0) return
-
-    const currentIndex = availableAgents.findIndex((a) => a.name === session.agent)
-    const prevIndex = currentIndex <= 0 ? availableAgents.length - 1 : currentIndex - 1
-    const prevAgent = availableAgents[prevIndex]
-
-    if (prevAgent) {
-      updateSessionAgent(instance.id, sessionId, prevAgent.name).catch(console.error)
-    }
-  }
-
   onMount(() => {
     initMarkdown(false).catch(console.error)
 
@@ -576,8 +508,6 @@ const App: Component = () => {
       },
     )
     registerAgentShortcuts(
-      handleCycleAgent,
-      handleCycleAgentReverse,
       () => {
         const modelInput = document.querySelector("[data-model-selector]") as HTMLInputElement
         if (modelInput) {

src/components/agent-selector.tsx

@@ -102,16 +102,9 @@ export default function AgentSelector(props: AgentSelectorProps) {
           </Select.Content>
         </Select.Portal>
       </Select>
-      <div class="flex items-center gap-1">
-        <Show when={availableAgents().length > 1}>
-          <span class="text-xs text-gray-400">
-            <Kbd>Tab</Kbd>
-          </span>
-        </Show>
-        <span class="text-xs text-gray-400">
-          <Kbd shortcut="cmd+shift+a" />
-        </span>
-      </div>
+      <span class="text-xs text-gray-400">
+        <Kbd shortcut="cmd+shift+a" />
+      </span>
     </div>
   )
 }

src/components/model-selector.tsx

@@ -101,10 +101,17 @@ export default function ModelSelector(props: ModelSelectorProps) {
           <Combobox.Input class="sr-only" data-model-selector />
           <Combobox.Trigger
             ref={triggerRef}
-            class="inline-flex items-center justify-between gap-2 px-2 py-1 bg-white border border-gray-300 rounded hover:bg-gray-50 outline-none focus:ring-2 focus:ring-blue-500 text-xs min-w-[140px]"
+            class="inline-flex items-center justify-between gap-2 px-2 py-1 bg-white border border-gray-300 rounded hover:bg-gray-50 outline-none focus:ring-2 focus:ring-blue-500 text-xs min-w-[180px]"
           >
-            <span class="text-gray-700">Model: {currentModelValue()?.name ?? "None"}</span>
-            <Combobox.Icon>
+            <div class="flex flex-col items-start min-w-0">
+              <span class="text-gray-700 font-medium">Model: {currentModelValue()?.name ?? "None"}</span>
+              {currentModelValue() && (
+                <span class="text-gray-500 text-[10px]">
+                  {currentModelValue()!.providerId}/{currentModelValue()!.id}
+                </span>
+              )}
+            </div>
+            <Combobox.Icon class="flex-shrink-0">
               <ChevronDown class="w-3 h-3 text-gray-500" />
             </Combobox.Icon>
           </Combobox.Trigger>

src/lib/shortcuts/agent.ts

@@ -1,39 +1,8 @@
 import { keyboardRegistry } from "../keyboard-registry"
 
-export function registerAgentShortcuts(
-  cycleAgent: () => void,
-  cycleAgentReverse: () => void,
-  focusModelSelector: () => void,
-  openAgentSelector: () => void,
-) {
+export function registerAgentShortcuts(focusModelSelector: () => void, openAgentSelector: () => void) {
   const isMac = () => navigator.platform.toLowerCase().includes("mac")
 
-  keyboardRegistry.register({
-    id: "agent-next",
-    key: "Tab",
-    modifiers: {},
-    handler: cycleAgent,
-    description: "next agent",
-    context: "global",
-    condition: () => {
-      const active = document.activeElement
-      return !(active?.tagName === "TEXTAREA" || active?.tagName === "INPUT" || active?.hasAttribute("contenteditable"))
-    },
-  })
-
-  keyboardRegistry.register({
-    id: "agent-prev",
-    key: "Tab",
-    modifiers: { shift: true },
-    handler: cycleAgentReverse,
-    description: "previous agent",
-    context: "global",
-    condition: () => {
-      const active = document.activeElement
-      return !(active?.tagName === "TEXTAREA" || active?.tagName === "INPUT" || active?.hasAttribute("contenteditable"))
-    },
-  })
-
   keyboardRegistry.register({
     id: "focus-model",
     key: "M",