feat: wire multi-agent config and routing

Co-authored-by: Mark Pors <1078320+pors@users.noreply.github.com>

src/commands/models/set.ts

@@ -6,26 +6,31 @@ export async function modelsSetCommand(modelRaw: string, runtime: RuntimeEnv) {
   const updated = await updateConfig((cfg) => {
     const resolved = resolveModelTarget({ raw: modelRaw, cfg });
     const key = `${resolved.provider}/${resolved.model}`;
-    const nextModels = { ...cfg.agent?.models };
+    const nextModels = { ...cfg.agents?.defaults?.models };
     if (!nextModels[key]) nextModels[key] = {};
-    const existingModel = cfg.agent?.model as
+    const existingModel = cfg.agents?.defaults?.model as
       | { primary?: string; fallbacks?: string[] }
       | undefined;
     return {
       ...cfg,
-      agent: {
-        ...cfg.agent,
-        model: {
-          ...(existingModel?.fallbacks
-            ? { fallbacks: existingModel.fallbacks }
-            : undefined),
-          primary: key,
+      agents: {
+        ...cfg.agents,
+        defaults: {
+          ...cfg.agents?.defaults,
+          model: {
+            ...(existingModel?.fallbacks
+              ? { fallbacks: existingModel.fallbacks }
+              : undefined),
+            primary: key,
+          },
+          models: nextModels,
         },
-        models: nextModels,
       },
     };
   });
 
   runtime.log(`Updated ${CONFIG_PATH_CLAWDBOT}`);
-  runtime.log(`Default model: ${updated.agent?.model?.primary ?? modelRaw}`);
+  runtime.log(
+    `Default model: ${updated.agents?.defaults?.model?.primary ?? modelRaw}`,
+  );
 }