fix(agents): detect Kimi model-token-limit overflows

Co-authored-by: Danilo Falcão <danilo@falcao.org>

src/agents/pi-embedded-helpers/errors.ts

@@ -51,6 +51,7 @@ export function isContextOverflowError(errorMessage?: string): boolean {
     lower.includes("maximum context length") ||
     lower.includes("prompt is too long") ||
     lower.includes("exceeds model context window") ||
+    lower.includes("model token limit") ||
     (hasRequestSizeExceeds && hasContextWindow) ||
     lower.includes("context overflow:") ||
     (lower.includes("413") && lower.includes("too large"))