feat(wallets): add integration test for wallet following list endpoint

[oluwa1to9-web]

Summary

Adds an integration test for the GET /api/v1/wallets/:address/following endpoint that returns all creators a wallet follows, ordered alphabetically by display name.

Closes #768

Changes

• prisma/schema/follow.prisma — New WalletCreatorFollow model linking wallets to creator profiles they follow, with unique constraint on (walletAddress, creatorId) and indexes for efficient lookups.
• prisma/schema/migrations/20260825000000_add_wallet_creator_follows/migration.sql — SQL migration creating the wallet_creator_follows table.
• src/modules/wallets/wallet-following.schemas.ts — Zod validation schema for the :address parameter (reuses existing StellarAddressSchema).
• src/modules/wallets/wallet-following.service.ts — Service layer that queries follows by wallet address, fetches linked creator profiles, and sorts them alphabetically by displayName.
• src/modules/wallets/wallet-following.controllers.ts — Express controller that validates params, calls the service, and returns the response.
• src/modules/wallets/wallets.routes.ts — Registered the new GET /:address/following route with jwtAuth middleware.

Integration Test

src/modules/wallets/wallet-following.integration.test.ts covers all acceptance criteria:

Acceptance Criteria	Test
Creators returned in alphabetical order by display name	✅ Asserts ["Alice", "Mike", "Zara"] order
All followed creators present in the response	✅ Asserts data.length === 3 with correct IDs
Empty array for a wallet with no follows	✅ Asserts data === []
Unauthenticated request returns 401	✅ Asserts status === 401

Test Setup

The test seeds:

• 3 creator profiles with display names "Alice", "Zara", "Mike" (inserted in reverse alphabetical order to verify sorting)
• 1 wallet (A) that follows all 3 creators
• 1 wallet (B) that follows no one
• JWT tokens for authenticated requests

All seeded data is cleaned up in afterAll.

Verification

• tsc --noEmit passes cleanly ✅
• Integration tests require a running PostgreSQL instance (consistent with all other integration tests in the repo)

Note

The wallet_creator_follows migration needs to be applied to the database. If running locally:

npx prisma migrate deploy

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