feat: finalize mindspace service extraction phase a

src/hooks/usePageEditSubChat.ts

@@ -20,7 +20,7 @@ import { buildUserAddressPrefix } from '../utils/userAddress';
 import {
   CHAT_IMAGE_UPLOAD_MAX_INPUT_BYTES,
 } from '../utils/imageUpload';
-import { buildAbsoluteAssetImageUrl } from '../utils/mindspaceCards';
+import { buildAbsoluteAssetDownloadUrl } from '../utils/mindspaceCards';
 import { resolveAgentRunOptions } from '../utils/agentRunMode';
 import {
   buildUserMessage,
@@ -142,10 +142,9 @@ export function usePageEditSubChat({
       sessionId: sessionRef.current?.id ?? null,
       messageId: options.messageId ?? null,
     });
-    return buildAbsoluteAssetImageUrl({
+    return buildAbsoluteAssetDownloadUrl({
       id: asset.id,
       updatedAt: asset.updatedAt,
-      publicUrl: asset.publicUrl,
     });
   }, [resolveChatImageUploadCategoryId]);
 

src/hooks/useTKMindChat.ts

@@ -51,7 +51,7 @@ import { mergeConversationSnapshot } from '../../chat-finish-sync.mjs';
 import {
   CHAT_IMAGE_UPLOAD_MAX_INPUT_BYTES,
 } from '../utils/imageUpload';
-import { buildAbsoluteAssetImageUrl } from '../utils/mindspaceCards';
+import { buildAbsoluteAssetDownloadUrl } from '../utils/mindspaceCards';
 import { resolveAgentRunOptions } from '../utils/agentRunMode';
 import {
   buildUserMessage,
@@ -585,10 +585,9 @@ export function useTKMindChat(
       sessionId: sessionRef.current?.id ?? null,
       messageId: options.messageId ?? null,
     });
-    return buildAbsoluteAssetImageUrl({
+    return buildAbsoluteAssetDownloadUrl({
       id: asset.id,
       updatedAt: asset.updatedAt,
-      publicUrl: asset.publicUrl,
     });
   }, [resolveChatImageUploadCategoryId]);
 

src/utils/mindspaceCards.ts

@@ -68,6 +68,12 @@ export function buildAbsoluteAssetImageUrl(
   return `${window.location.origin}${buildAssetImageUrl(asset)}`;
 }
 
+export function buildAbsoluteAssetDownloadUrl(
+  asset: Pick<MindSpaceAsset, 'id' | 'updatedAt'>,
+): string {
+  return `${window.location.origin}/api/mindspace/v1/assets/${asset.id}/download?inline=1&viewer=0&v=${asset.updatedAt}`;
+}
+
 /** Chrome blocks PDF rendering inside any sandboxed iframe. */
 export function assetPreviewUsesSandbox(mimeType: string) {
   return mimeType !== 'application/pdf';