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Pull Request Summary — Assignment 2: CRC Cards

This pull request adds the CRC Cards required for Assignment 2 and refines the initial object structure created in Assignment 1. The update focuses on clarifying how responsibilities are distributed across the core domain objects in our social‑gaming platform and documenting how these objects collaborate to support future use cases.

Added Content

• New file: docs/analysis/crc-cards.md
• CRC cards for six core domain classes:
  • User
  • Friendship
  • Achievement
  • Reward
  • Game
  • SupportRequest

Each CRC card includes:

• A list of responsibilities that the class owns
• A list of collaborators the class depends on to perform those responsibilities

Design Improvements

The CRC cards help transition the project from raw nouns and verbs toward a structured object model. Responsibilities are now clearly assigned to specific classes, reducing overlap and preventing overly large or underpowered objects. Collaborators are explicitly identified, establishing the interaction patterns that will guide later design decisions in Assignments 3 and 4.

Code Alignment

Minor structural adjustments were made to the skeleton code from Assignment 1 to ensure class files reflect the responsibilities identified in the CRC cards. No business logic was added; only structural updates were made where appropriate.