Number entries on publish, delete media, read the cover

- drafts stay unnumbered, the number is handed out when an entry goes live
- DELETE /api/v1/media/:id and a delete control in the media library
- cover_media_id in the draft read, coverMediaId and coverUrl in the archive read

src/components/ui/Plate.tsx

@@ -6,7 +6,7 @@ export type PlateSize = 'lead' | 'card' | 'row'
 export type PlateProps = {
 	project: ProjectCodeSource
 	color: string
-	number: number
+	number: number | null
 	size?: PlateSize
 	showNumber?: boolean
 	className?: string
@@ -22,8 +22,8 @@ export function entryNumber(number: number): string {
 	return String(number).padStart(4, '0')
 }
 
-export function entryMark(project: ProjectCodeSource, number: number): string {
-	return `${projectCode(project)}-${entryNumber(number)}`
+export function entryMark(project: ProjectCodeSource, number: number | null): string {
+	return number === null ? projectCode(project) : `${projectCode(project)}-${entryNumber(number)}`
 }
 
 const shells: Record<PlateSize, string> = {
@@ -51,7 +51,7 @@ export function Plate({ project, color, number, size = 'row', showNumber = true,
 			className={`${projectSurface} ${shells[size]} font-mono font-semibold text-paper ${className ?? ''}`}
 		>
 			<span className={`block uppercase ${codeSizes[size]}`}>{projectCode(project)}</span>
-			{showNumber ? (
+			{showNumber && number !== null ? (
 				<span className={`block tabular-nums ${numberSizes[size]}`}>{entryNumber(number)}</span>
 			) : null}
 		</span>