fix: remove client-supplied rating, dead code, and deletePrompt rollback

[Ahmedfurkhan]

Hey Carey and Julia! Just finished reviewing Prompt Explore and honestly it was a great experience the codebase is really clean and well thought out. The moderation workflow especially stood out, super smart to use a recently_deleted collection instead of hard deleting. I caught a couple of small bugs during the review (fake rating injection on create and a data consistency edge case in deletePrompt) and submitted a fix PR. Overall awesome work, you can tell a lot of effort went into this. Really enjoyed reviewing it!

What changed

routes/create.js

• Removed rating from req.body destructuring
• New prompts now always initialize with { 1:0, 2:0, 3:0, 4:0, 5:0 } server-side

db/promptDB.js

• deletePrompt: added rollback if deleteOne fails after archiving

• Removed commented-out local MongoDB URI (line 16)

Why
These were caught during peer code review. No functional behaviour
changes for the happy path only edge case correctness and security.

Reviewer notes

• No schema/migration changes needed
• No frontend changes
• Safe to merge directly into main``

Future upgrades you can do for the application :

1. Copy Button
   One-click copy on every prompt card. Most-used feature for real users — they come to find a prompt and paste it somewhere.

2. User Accounts
   Right now anyone can delete anything. A simple session-based auth would let you track who submitted what and protect prompts from random deletion.

3. Prompt History / Versioning
   When a moderator edits a prompt, save the original. Let users see what changed and why.