CLPR-7.1: IClprVerifier Solidity Interface (Ethereum)

## Story CLPR-7.1: IClprVerifier Solidity Interface (Ethereum)

**Parent Epic:** CLPR-7: Ethereum Verifier
**Repo:** TBD

### Objective

Deploy `IClprVerifier` interface on Ethereum and establish verifier deployment patterns.

### Acceptance Criteria

- **AC-1:** Interface: `verifyConfig`, `verifyBundle`, `verifyEndpoints`, `verifyMetadata` — all `view`.
- **AC-2:** ABI conventions documented for protobuf ↔ Solidity conversion.
- **AC-3:** Verifier upgradeability: proxy allowed, but upgrade authority MUST be controlled by source ledger's CLPR admin (spec §8.8).
- **AC-4:** Pass-through verifier for testing.
- **AC-5:** Foundry tests with mock proofs.

### Dependencies

- CLPR-6.1

### Risk

**Low** — Interface definition. Real complexity in CLPR-7.2.

Resolve the TBD repository first, then read dependency CLPR-6.1 and specification §8.8 before defining the IClprVerifier interface. Establish the four view methods, protobuf-to-Solidity ABI conventions, proxy authority, pass-through verifier, and Foundry tests with mock proofs; done means all acceptance criteria are covered.

Written by the indexing model from the issue text.