feat: wire multi-agent config and routing

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

src/commands/status.ts

@@ -86,7 +86,7 @@ export async function getStatusSummary(): Promise<StatusSummary> {
   });
   const configModel = resolved.model ?? DEFAULT_MODEL;
   const configContextTokens =
-    cfg.agent?.contextTokens ??
+    cfg.agents?.defaults?.contextTokens ??
     lookupContextTokens(configModel) ??
     DEFAULT_CONTEXT_TOKENS;