Cardano Updates

Signed-off-by: Aurora Gaffney <[email protected]>

* feat: infer DRep type from CIP-129 and improve validation errors

* feat: update DRep delegation tests to infer types correctly

* fix: revert DRep error HTTP status to 500 per Rosetta specification

Bumps [docker/build-push-action](https://github.com/docker/build-push-action) from 6.18.0 to 6.19.2.
- [Release notes](https://github.com/docker/build-push-action/releases)
- [Commits](https://github.com/docker/build-push-action/compare/263435318d21b8e681c14492fe198d362a7d2c83...10e90e3645eae34f1e60eeb005ba3a3d33f178e8)

---
updated-dependencies:
- dependency-name: docker/build-push-action
  dependency-version: 6.19.2
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

CIP-???? | On-Chain Surveys and Polls#1107

Replace Java-based Allure 2 CLI with Node.js-based Allure 3 (npx [email protected]) in CI workflows. Add request/response body attachments,AST-extracted assertions, and environment metadata to Allure reports. Fix pytest-env to use defaults so CLI env vars take priority.

* refactor: move e2e_tests/ into tests/e2e/

Align e2e test suite with the existing tests/ directory structure.

- Rename Python package: e2e_tests -> e2e (all imports updated)
- Remove redundant example.env (superseded by .env.example)
- Remove requirements.txt (superseded by pyproject.toml + uv.lock)
- Update README quick start to use uv sync
- Fix pytest.ini inline comment breaking pytest-asyncio config
- Update docs GitHub link to new path

* test(e2e): add preview network support and uv packaging

- Add pyproject.toml with uv dependency management
- Add .env.example with all configuration options documented
- Add prepare_wallet.py for wallet setup and on-chain lookups
- Gitignore private .*.env files

* chore(e2e): fix ruff lint warnings

- Replace bare except with except Exception
- Remove unused imports (auto-fixed by ruff --fix)
- Remove unused local variables
- Add rich to pyproject.toml dependencies

* fix(e2e): on-chain validation in prepare_wallet.py

- Fix blockfrost_get() missing /v0 in URL path (was redirecting to HTML)
- Fix DRep lookup to use bech32 encoding (Blockfrost rejects hex format)
- Add on-chain checks: stake key registration state, pool retirement epoch, DRep active/expired status, proposal open/closed status
- Merge status + validate into single 'check' command with UTXO table
- Add pool retirement epoch awareness (retiring vs actually retired)
- Add help command, lookup finds fresh active DReps and open proposals

Add behavioral tests and golden examples for dRepVoteDelegation and
poolGovernanceVote operations in data endpoints (/block, /search/transactions,
/network/options).

- 13 behavioral tests validating metadata structure for all 4 drep.type
  variants (key_hash, script_hash, abstain, no_confidence) and pool vote
  variants (yes, no), plus multi-vote-per-tx validation
- 5 data golden examples: 2 block, 2 search, 1 network/options
- Add governance test data (blocks + tx hashes) to network_test_data.yaml
- Fix pytest.ini env vars to use D: prefix so CLI overrides work

Signed-off-by: Hyperledger Bot <[email protected]>