test(profile): earnings — register

[0xdevcollins]

Part of #25 (contract test-coverage push).

profile

How to test

• Reuse the crate's tests/common.rs harness; add tests/earnings.rs + a one-line mod earnings; in tests/mod.rs.
• Template: contracts/profile/src/tests/bootstrap.rs.
• Run cargo test -p boundless-profile, then cargo test --all before the PR.

Acceptance criteria

• New tests/earnings.rs covering every function in scope.
• Happy path + each Error variant + edge cases + auth-rejection (+ idempotency where relevant).
• cargo test --all passes; PR links this issue.

[dev8967]

Submitted PR #38 for this profile earnings coverage task:

#38

It adds contracts/profile/src/tests/earnings.rs, wires it into tests/mod.rs, and covers missing events-contract configuration, happy path registration, per-token accumulation, invalid amounts, replayed op ids, paused-contract rejection, and events-contract auth tracking.

[1sraeliteX]

Hello maintainer, I would like to work on this issue.