whetstone_DSL/tmp_eval_large_specs_20260303/twitter_clone_node.md

Twitter Clone Backend (custom_twitter_clone_001)

Objective

Build a Twitter-like backend with user profiles, follow/unfollow, tweet creation, timeline fan-out/fan-in retrieval, likes, replies, reposts, hashtag search, and notification delivery.

Language & Library Constraints

• Primary language: node
• Available libraries: express, prisma, zod, bullmq, redis
• Use library APIs explicitly where suitable in execution contracts.

Functional Requirements

• Auth endpoints for register/login/session refresh.
• Tweet CRUD with soft-delete and edit-history metadata.
• Follow graph management and privacy controls.
• Home timeline generation with pagination and ranking hooks.
• Mentions/hashtags indexing and search endpoint.
• Notification queue and retry-safe delivery worker.

Acceptance

• Deterministic taskitems with strict execution contracts.
• Include selected library and preferred APIs when applicable.
• Multi-file artifact targets for API, data model, worker, and tests.