fix(cardano): Add parameter change proposal outcome

[gonzalezzfelipe]

Summary by CodeRabbit

• Bug Fixes
  • Updated proposal outcome evaluation logic to correctly handle a specific proposal condition, ensuring the proper ratified status is returned.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: ddf0d0de-f5b7-467b-b96f-d95fba915211

📥 Commits

Reviewing files that changed from the base of the PR and between 86cc287 and d7f112f.

📒 Files selected for processing (1)

• crates/cardano/src/hacks.rs

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📝 Walkthrough

Walkthrough

A hard-coded proposal hash with index #0 is added to the proposals::preview::outcome function, enabling it to return ProposalOutcome::Ratified(1269) for a specific proposal before falling through to default protocol-based logic.

Changes

Cohort / File(s)	Summary
Proposal Hash Interception crates/cardano/src/hacks.rs	Added match arm for a specific proposal hash (#0) that explicitly returns ProposalOutcome::Ratified(1269) instead of using protocol defaults.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

Possibly related PRs

• fix(minibf): Correct plutus-v1 on preview #871: Modifies the same proposals::preview::outcome function by adding a match arm for a different proposal hash with a different outcome.
• fix(minibf): Add missing enacted proposal #791: Adds an identical pattern of hard-coded match arm for proposal #0 returning Ratified(...) to the same function.

Suggested reviewers

• scarmuega

Poem

🐰 A hash finds its match, oh what a delight!
Proposal votes cast in the warm morning light,
Ratified swift at one-two-six-nine's call,
No protocols needed—this rabbit decoded it all! 🎩✨

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately describes the main change: adding a proposal outcome for a parameter change on the preview network.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch fix/missing-parameter-change-on-preview

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