Allow inline video attachment previews

Co-Authored-By: Paperclip <noreply@paperclip.ing>

ui/src/components/IssueAttachmentsSection.test.tsx

@@ -60,8 +60,6 @@ function makeAttachment(overrides: Partial<IssueAttachment> = {}): IssueAttachme
     createdAt: new Date("2026-06-01T00:00:00.000Z"),
     updatedAt: new Date("2026-06-01T00:00:00.000Z"),
     contentPath: "/api/attachments/attachment-1/content",
-    openPath: "/api/attachments/attachment-1/content",
-    downloadPath: "/api/attachments/attachment-1/content?download=1",
     ...overrides,
   };
 }
@@ -271,8 +269,6 @@ describe("IssueAttachmentsSection", () => {
       originalFilename: "report.pdf",
       contentType: "application/pdf",
       contentPath: "/api/attachments/pdf-attachment/content",
-      openPath: "/api/attachments/pdf-attachment/content",
-      downloadPath: "/api/attachments/pdf-attachment/content?download=1",
     });
 
     await act(async () => {

ui/src/lib/issue-attachments.ts

@@ -7,6 +7,12 @@ const GENERIC_ATTACHMENT_CONTENT_TYPES = new Set([
   "application/x-binary",
 ]);
 
+type AttachmentPathLike = {
+  contentPath: string;
+  openPath?: string;
+  downloadPath?: string;
+};
+
 function normalizedContentType(attachment: Pick<IssueAttachment, "contentType">) {
   return attachment.contentType.toLowerCase().split(";")[0]?.trim() ?? "";
 }
@@ -15,15 +21,11 @@ export function attachmentFilename(attachment: Pick<IssueAttachment, "id" | "ori
   return attachment.originalFilename ?? attachment.id;
 }
 
-export function attachmentOpenPath(
-  attachment: Pick<IssueAttachment, "contentPath" | "openPath">,
-) {
+export function attachmentOpenPath(attachment: AttachmentPathLike) {
   return attachment.openPath ?? attachment.contentPath;
 }
 
-export function attachmentDownloadPath(
-  attachment: Pick<IssueAttachment, "contentPath" | "downloadPath">,
-) {
+export function attachmentDownloadPath(attachment: AttachmentPathLike) {
   return attachment.downloadPath ?? `${attachment.contentPath}?download=1`;
 }