Add mail-client keyboard shortcuts to inbox mine tab

j/k navigate up/down, a to archive, U to mark unread, r to mark read,
Enter to open. Includes server-side DELETE /issues/:id/read endpoint
for mark-unread support on issues.

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

server/src/services/issues.ts

@@ -791,6 +791,20 @@ export function issueService(db: Db) {
       return row;
     },
 
+    markUnread: async (companyId: string, issueId: string, userId: string) => {
+      const deleted = await db
+        .delete(issueReadStates)
+        .where(
+          and(
+            eq(issueReadStates.companyId, companyId),
+            eq(issueReadStates.issueId, issueId),
+            eq(issueReadStates.userId, userId),
+          ),
+        )
+        .returning();
+      return deleted.length > 0;
+    },
+
     archiveInbox: async (companyId: string, issueId: string, userId: string, archivedAt: Date = new Date()) => {
       const now = new Date();
       const [row] = await db