feat: Canton MCMS proposal analyzer

[JohnChangUK]

Desc

Canton MCMS proposal analyzer

Todos

When MCMS get's new release, change go mod to point to that release: smartcontractkit/mcms#779

[changeset-bot]

🦋 Changeset detected

Latest commit: 1802611

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
chainlink-deployments-framework	Minor

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[github-actions]

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[Copilot]

Pull request overview

This PR adds Canton chain-family support to the experimental proposal analyzer/UPF conversion pipeline, enabling decoding and rendering of Canton MCMS transactions (including nested Daml record args) into reviewer-friendly Markdown/YAML outputs.

Changes:

• Add a Canton analyzer (AnalyzeCantonTransaction(s)) and wire it into the family dispatch paths (report builder + UPF conversion).
• Improve rendering of nested Canton/Daml record arguments by converting decoded map[string]any into structured fields with deterministic ordering.
• Add end-to-end tests and a real Canton proposal fixture to validate decode + render output.

Reviewed changes

Copilot reviewed 11 out of 11 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
experimental/analyzer/utils.go	Adds map[string]any handling for Canton decoded args via mapToStructField.
experimental/analyzer/canton_analyzer.go	Implements Canton transaction decoding into DecodedCall.
experimental/analyzer/canton_analyzer_test.go	Adds unit + pipeline tests for Canton decode/render behavior.
experimental/analyzer/report_builder.go	Dispatches Canton transactions to the new analyzer.
experimental/analyzer/renderer_markdown.go	Improves compact previews for StructField (now shows {key: value} hint / {} when empty).
experimental/analyzer/renderer_markdown_test.go	Updates tests for the new struct compact preview behavior.
experimental/analyzer/upf/upf.go	Adds Canton support in UPF batch decode + single-transaction analysis.
experimental/analyzer/upf/upf_test.go	Adds an end-to-end UPF conversion test using a real Canton proposal fixture.
experimental/analyzer/upf/upf_canton_test.go	Adds a focused test ensuring UPF batch decode yields decoded Canton calls.
experimental/analyzer/testdata/canton_test_proposal.json	Adds a real Canton timelock proposal fixture for tests.
.changeset/canton-proposal-analyzer.md	Declares a minor release for the new analyzer feature.

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[Copilot]

Pull request overview

Copilot reviewed 13 out of 14 changed files in this pull request and generated no new comments.

[Copilot]

Pull request overview

Copilot reviewed 13 out of 14 changed files in this pull request and generated no new comments.

[Copilot]

Pull request overview

Copilot reviewed 13 out of 14 changed files in this pull request and generated 1 comment.

[cl-sonarqube-production]

Quality Gate passed

Issues
0 New issues
0 Fixed issues
0 Accepted issues

Measures
0 Security Hotspots
94.8% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube