fix: hydrate current turn image attachments

src/auto-reply/reply/current-turn-images.ts

@@ -2,6 +2,7 @@ import type { ImageContent } from "@earendil-works/pi-ai";
 import type { OpenClawConfig } from "../../config/types.openclaw.js";
 import { logVerbose } from "../../globals.js";
 import { formatErrorMessage } from "../../infra/errors.js";
+import { mimeTypeFromFilePath } from "../../media/mime.js";
 import type { PromptImageOrderEntry } from "../../media/prompt-image-order.js";
 import { normalizeOptionalString } from "../../shared/string-coerce.js";
 import type { MsgContext } from "../templating.js";
@@ -13,6 +14,30 @@ type CurrentImageAttachment = {
   mediaType: string;
 };
 
+function isGenericMediaType(mediaType: string | undefined): boolean {
+  if (!mediaType) {
+    return true;
+  }
+  const normalized = mediaType.split(";")[0]?.trim().toLowerCase();
+  return normalized === "application/octet-stream" || normalized === "binary/octet-stream";
+}
+
+function resolveCurrentImageMediaType(pathValue: unknown, mediaType?: unknown): string | undefined {
+  const mediaPath = normalizeOptionalString(pathValue);
+  if (!mediaPath) {
+    return undefined;
+  }
+  const normalizedMediaType = normalizeOptionalString(mediaType);
+  if (normalizedMediaType?.startsWith("image/")) {
+    return normalizedMediaType;
+  }
+  if (!isGenericMediaType(normalizedMediaType)) {
+    return undefined;
+  }
+  const inferredType = mimeTypeFromFilePath(mediaPath);
+  return inferredType?.startsWith("image/") ? inferredType : undefined;
+}
+
 function collectCurrentImageAttachments(ctx: MsgContext): CurrentImageAttachment[] {
   const pathsFromArray = Array.isArray(ctx.MediaPaths) ? ctx.MediaPaths : undefined;
   const paths =
@@ -31,8 +56,8 @@ function collectCurrentImageAttachments(ctx: MsgContext): CurrentImageAttachment
   const attachments: CurrentImageAttachment[] = [];
   for (const [index, pathValue] of paths.entries()) {
     const mediaPath = normalizeOptionalString(pathValue);
-    const mediaType = normalizeOptionalString(types?.[index] ?? ctx.MediaType);
-    if (mediaPath && mediaType?.startsWith("image/")) {
+    const mediaType = resolveCurrentImageMediaType(pathValue, types?.[index] ?? ctx.MediaType);
+    if (mediaPath && mediaType) {
       attachments.push({ index, path: mediaPath, mediaType });
     }
   }

src/auto-reply/reply/get-reply-run.media-only.test.ts

@@ -878,7 +878,7 @@ describe("runPreparedReply media-only handling", () => {
     expect(call?.followupRun.prompt).toContain("[User sent media without caption]");
   });
 
-  it("hydrates current MediaPaths into queued followup images", async () => {
+  it("hydrates current image MediaPaths by extension when MediaTypes are missing", async () => {
     const tmpDir = await mkdtemp(path.join(os.tmpdir(), "openclaw-followup-image-"));
     cleanupPaths.push(tmpDir);
     const imagePath = path.join(tmpDir, "inbound.png");
@@ -897,7 +897,6 @@ describe("runPreparedReply media-only handling", () => {
           RawBody: "describe this",
           CommandBody: "describe this",
           MediaPaths: [imagePath],
-          MediaTypes: ["image/png"],
           MediaWorkspaceDir: tmpDir,
           OriginatingChannel: "discord",
           OriginatingTo: "C123",
@@ -911,7 +910,6 @@ describe("runPreparedReply media-only handling", () => {
           OriginatingTo: "C123",
           ChatType: "group",
           MediaPaths: [imagePath],
-          MediaTypes: ["image/png"],
           MediaWorkspaceDir: tmpDir,
         },
       }),