Add Solution Bookmarks/Favorites

[Mkalbani]

Description

Let users bookmark solutions to revisit later.

Acceptance Criteria

• Create Bookmark entity (userId, solutionId, createdAt)
• POST /solutions/:id/bookmark (toggle)
• GET /users/me/bookmarks (my bookmarks)
• Add isBookmarked flag to solution responses
• Limit 100 bookmarks per user

Database Schema

@Entity('bookmarks')
export class Bookmark {
  @PrimaryGeneratedColumn()
  id: number;

  @ManyToOne(() => User)
  user: User;

  @ManyToOne(() => Solution)
  solution: Solution;

  @CreateDateColumn()
  createdAt: Date;
}

API Examples

# Bookmark
POST /solutions/123/bookmark

# Unbookmark
DELETE /solutions/123/bookmark

# Get my bookmarks
GET /users/me/bookmarks

ETA: 6 hours

[0xNinx]

Hello maintainer, I have reviewed this issue description and acceptance criteria and will like to work on this please. ETA is 6hours.

[Nemenwq]

Hi , i just reviewed the issue details and will like to work on this. ETA: 6hours

[ebubeb683-ship-it]

I’ve reviewed the issue, understand the requirements, and am ready to start implementing the solution. I’d appreciate being assigned to this issue.