fix: expose agent runtime status metadata

ui/src/ui/chat/slash-command-executor.ts

@@ -426,7 +426,8 @@ async function executeAgents(client: GatewayBrowserClient): Promise<SlashCommand
       const isDefault = agent.id === result?.defaultId;
       const name = agent.identity?.name || agent.name || agent.id;
       const marker = isDefault ? " *(default)*" : "";
-      lines.push(`- \`${agent.id}\` — ${name}${marker}`);
+      const runtime = agent.agentRuntime?.id ? ` · runtime \`${agent.agentRuntime.id}\`` : "";
+      lines.push(`- \`${agent.id}\` — ${name}${marker}${runtime}`);
     }
     return { content: lines.join("\n") };
   } catch (err) {

ui/src/ui/views/agents-panels-overview.ts

@@ -11,6 +11,7 @@ import {
   normalizeModelValue,
   parseFallbackList,
   resolveAgentConfig,
+  resolveAgentRuntimeLabel,
   resolveModelFallbacks,
   resolveModelLabel,
   resolveModelPrimary,
@@ -64,6 +65,7 @@ export function renderAgentOverview(params: {
     : config.defaults?.model
       ? resolveModelLabel(config.defaults?.model)
       : resolveModelLabel(agentModel);
+  const runtime = resolveAgentRuntimeLabel(agent.agentRuntime);
   const defaultModel = resolveModelLabel(config.defaults?.model ?? agentModel);
   const entryPrimary = resolveModelPrimary(config.entry?.model);
   const defaultPrimary =
@@ -121,6 +123,10 @@ export function renderAgentOverview(params: {
           <div class="label">Primary Model</div>
           <div class="mono">${model}</div>
         </div>
+        <div class="agent-kv">
+          <div class="label">Runtime</div>
+          <div class="mono">${runtime}</div>
+        </div>
         <div class="agent-kv">
           <div class="label">Skills Filter</div>
           <div>${skillFilter ? `${skillCount} selected` : "all skills"}</div>

ui/src/ui/views/agents-panels-status-files.ts

@@ -112,6 +112,10 @@ function renderAgentContextCard(
           <div class="label">Primary Model</div>
           <div class="mono">${context.model}</div>
         </div>
+        <div class="agent-kv">
+          <div class="label">Runtime</div>
+          <div class="mono">${context.runtime}</div>
+        </div>
         <div class="agent-kv">
           <div class="label">Identity Name</div>
           <div>${context.identityName}</div>

ui/src/ui/views/agents-utils.test.ts

@@ -204,6 +204,7 @@ describe("buildAgentContext", () => {
           primary: "openai/gpt-5.5",
           fallbacks: ["openai-codex/gpt-5.2-codex"],
         },
+        agentRuntime: { id: "claude-cli", fallback: "none", source: "agent" },
       },
       null,
       null,
@@ -213,6 +214,7 @@ describe("buildAgentContext", () => {
 
     expect(context.workspace).toBe("/tmp/agent-workspace");
     expect(context.model).toBe("openai/gpt-5.5 (+1 fallback)");
+    expect(context.runtime).toBe("claude-cli (fallback none)");
     expect(context.isDefault).toBe(true);
   });
 

ui/src/ui/views/agents-utils.ts

@@ -167,6 +167,7 @@ type AgentConfigEntry = {
   workspace?: string;
   agentDir?: string;
   model?: unknown;
+  agentRuntime?: unknown;
   skills?: string[];
   tools?: {
     profile?: string;
@@ -386,6 +387,7 @@ export function resolveAgentConfig(config: Record<string, unknown> | null, agent
 export type AgentContext = {
   workspace: string;
   model: string;
+  runtime: string;
   identityName: string;
   identityAvatar: string;
   skillsLabel: string;
@@ -413,6 +415,7 @@ export function buildAgentContext(
     : config.defaults?.model
       ? resolveModelLabel(config.defaults?.model)
       : resolveModelLabel(agent.model);
+  const runtime = resolveAgentRuntimeLabel(agent.agentRuntime);
   const identityName =
     normalizeOptionalString(agent.identity?.name) ||
     normalizeOptionalString(agent.name) ||
@@ -427,6 +430,7 @@ export function buildAgentContext(
   return {
     workspace,
     model: modelLabel,
+    runtime,
     identityName,
     identityAvatar,
     skillsLabel: skillFilter ? `${skillCount} selected` : "all skills",
@@ -434,6 +438,14 @@ export function buildAgentContext(
   };
 }
 
+export function resolveAgentRuntimeLabel(
+  agentRuntime?: AgentsListResult["agents"][number]["agentRuntime"],
+): string {
+  const id = normalizeOptionalString(agentRuntime?.id) ?? "pi";
+  const fallback = normalizeOptionalString(agentRuntime?.fallback);
+  return fallback ? `${id} (fallback ${fallback})` : id;
+}
+
 export function resolveModelLabel(model?: unknown): string {
   if (!model) {
     return "-";