fix(agents): make image sanitization dimension configurable

src/agents/image-sanitization.ts

@@ -0,0 +1,17 @@
+import type { OpenClawConfig } from "../config/config.js";
+
+export type ImageSanitizationLimits = {
+  maxDimensionPx?: number;
+  maxBytes?: number;
+};
+
+export const DEFAULT_IMAGE_MAX_DIMENSION_PX = 1200;
+export const DEFAULT_IMAGE_MAX_BYTES = 5 * 1024 * 1024;
+
+export function resolveImageSanitizationLimits(cfg?: OpenClawConfig): ImageSanitizationLimits {
+  const configured = cfg?.agents?.defaults?.imageMaxDimensionPx;
+  if (typeof configured !== "number" || !Number.isFinite(configured)) {
+    return {};
+  }
+  return { maxDimensionPx: Math.max(1, Math.floor(configured)) };
+}