fix: avoid global image size regression

src/agents/pi-embedded-helpers.ts

@@ -30,6 +30,7 @@ export {
   isRateLimitErrorMessage,
   isTimeoutErrorMessage,
   parseImageDimensionError,
+  parseImageSizeError,
 } from "./pi-embedded-helpers/errors.js";
 export { isGoogleModelApi, sanitizeGoogleTurnOrdering } from "./pi-embedded-helpers/google.js";
 

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

@@ -401,6 +401,7 @@ const ERROR_PATTERNS = {
 const IMAGE_DIMENSION_ERROR_RE =
   /image dimensions exceed max allowed size for many-image requests:\s*(\d+)\s*pixels/i;
 const IMAGE_DIMENSION_PATH_RE = /messages\.(\d+)\.content\.(\d+)\.image/i;
+const IMAGE_SIZE_ERROR_RE = /image exceeds\s*(\d+(?:\.\d+)?)\s*mb/i;
 
 function matchesErrorPatterns(raw: string, patterns: readonly ErrorPattern[]): boolean {
   if (!raw) return false;
@@ -467,10 +468,23 @@ export function isImageDimensionErrorMessage(raw: string): boolean {
   return Boolean(parseImageDimensionError(raw));
 }
 
+export function parseImageSizeError(raw: string): {
+  maxMb?: number;
+  raw: string;
+} | null {
+  if (!raw) return null;
+  const lower = raw.toLowerCase();
+  if (!lower.includes("image exceeds") || !lower.includes("mb")) return null;
+  const match = raw.match(IMAGE_SIZE_ERROR_RE);
+  return {
+    maxMb: match?.[1] ? Number.parseFloat(match[1]) : undefined,
+    raw,
+  };
+}
+
 export function isImageSizeError(errorMessage?: string): boolean {
   if (!errorMessage) return false;
-  const lower = errorMessage.toLowerCase();
-  return lower.includes("image exceeds") && lower.includes("mb");
+  return Boolean(parseImageSizeError(errorMessage));
 }
 
 export function isCloudCodeAssistFormatError(raw: string): boolean {

src/agents/pi-embedded-runner/run.ts

@@ -34,7 +34,7 @@ import {
   isContextOverflowError,
   isFailoverAssistantError,
   isFailoverErrorMessage,
-  isImageSizeError,
+  parseImageSizeError,
   parseImageDimensionError,
   isRateLimitAssistantError,
   isTimeoutErrorMessage,
@@ -442,12 +442,17 @@ export async function runEmbeddedPiAgent(
               };
             }
             // Handle image size errors with a user-friendly message (no retry needed)
-            if (isImageSizeError(errorText)) {
+            const imageSizeError = parseImageSizeError(errorText);
+            if (imageSizeError) {
+              const maxMb = imageSizeError.maxMb;
+              const maxMbLabel =
+                typeof maxMb === "number" && Number.isFinite(maxMb) ? `${maxMb}` : null;
+              const maxBytesHint = maxMbLabel ? ` (max ${maxMbLabel}MB)` : "";
               return {
                 payloads: [
                   {
                     text:
-                      "Image too large for the model (max 5MB). " +
+                      `Image too large for the model${maxBytesHint}. ` +
                       "Please compress or resize the image and try again.",
                     isError: true,
                   },

src/media/constants.ts

@@ -1,4 +1,4 @@
-export const MAX_IMAGE_BYTES = 5 * 1024 * 1024; // 5MB (Anthropic API limit)
+export const MAX_IMAGE_BYTES = 6 * 1024 * 1024; // 6MB
 export const MAX_AUDIO_BYTES = 16 * 1024 * 1024; // 16MB
 export const MAX_VIDEO_BYTES = 16 * 1024 * 1024; // 16MB
 export const MAX_DOCUMENT_BYTES = 100 * 1024 * 1024; // 100MB