feat(contracts): implement upsert profile

[chidii]

Closes #193

Summary
Implements the admin-only upsert_profile entrypoint for the Quid reputation contract.

Files Created

• quid-contract/contracts/quid-reputation/Cargo.toml
• quid-contract/contracts/quid-reputation/src/lib.rs
• quid-contract/contracts/quid-reputation/src/error.rs
• quid-contract/contracts/quid-reputation/src/test.rs

Implementation

• initialize(admin) — sets the admin address
• upsert_profile(subject, successful_missions, rejected_submissions, reviewer_score, founder_score, total_earnings) — admin-only profile write
• get_profile(subject) — read a profile
• Requires admin auth via admin.require_auth()
• Rejects negative total_earnings
• Rejects reviewer_score or founder_score > 100
• Stores profile with updated_at timestamp
• Publishes ProfileUpdatedEvent

Tests (10)

• Initialize sets admin
• Double initialize fails
• Upsert success with field verification
• Upsert updates existing profile
• Rejects negative earnings
• Rejects score > 100 (reviewer and founder)
• Requires admin auth
• Get profile not found
• Emits ProfileUpdatedEvent
• Zero values allowed

[drips-wave]

@chidii Great news! 🎉 Based on an automated assessment of this PR, the linked Wave issue(s) no longer count against your application limits.

You can now already apply to more issues while waiting for a review of this PR. Keep up the great work! 🚀

Learn more about application limits

[Kaylahray]

Hello @chidii Please resolve conflicts n workflow

[chidii]

@Kaylahray Branch cleaned up: rebased on main, single commit, no merge conflicts. Ready for re-review.

[Kaylahray]

@chidii sorry last time please

[chidii]

@Kaylahray Conflicts resolved and upsert_profile entrypoint added per issue #193. All acceptance criteria covered — admin auth, negative earnings rejection, ProfileUpdatedEvent emitted, and tests included. Ready for re-review!

[chidii]

Closing in favour of #222 which is a clean implementation rebased directly on main.