wire frontend to real APIs

[shreeyaadhikari]

ℹ️ Issue

Closes #248

📝 Description

Wire frontend pages to the real backend APIs and make tests CI-friendly by adding deterministic auth + API mocks so typecheck/tests don't fail when calling protected endpoints.

Briefly list the changes made to the code:

1. Replaced hardcoded mock arrays with real API calls using useApi() in:

• apps/frontend/src/app/donors/page.tsx
• apps/frontend/src/app/donations/page.tsx
• apps/frontend/src/app/accounts/page.tsx

2. Made component tests deterministic and async safe:

• Added per-test auth + fetch mocks for Donors, Donations, and AccountsPage tests so they no longer fail with 401s.
• Updated assertions to use findBy / waitFor where needed.

✔️ Verification

🏕️ (Optional) Future Work / Notes

[nourshoreibah]

Some comments on pieces I think may be broken! Would you please add the test-environment label to this pr and test your pr with the account i sent in proj-branch? just to make sure the linking actually workss

[mehanana]

Apart from Nour's comments, I only found 1 small change needed!

[github-actions]

🌿 ⏳ Creating preview environment… (logs)

[github-actions]

🌿 Preview environment — ready ✅

Open: https://d3nmtjoh6ir9ym.cloudfront.net/pr-303/
API: https://i8z3sfdfpf.execute-api.us-east-2.amazonaws.com/prod

Shared RDS + Cognito (prod data); DB migrations are not applied here — if this PR adds a migration, endpoints using the new columns will fail until it merges. New commits update this environment in place — a note is posted here on each update. Remove the test-environment label or close the PR to tear it down.

[github-actions]

🌿 Test environment updated in place ✅ — Click here to open. _{updated for fca978b · logs}

[mehanana]

looks good!