ci: split fast tests from coverage tracing

[immrsd]

What

Splits the single test job into two, per @0xNeshi's review:

• test — sui move test (no tracing): the fast regression gate (~5s even for math/core). Gates merges.
• coverage — sui move test --trace + sui move coverage lcov + Codecov: isolated, continue-on-error: true (informational, never blocks a merge), runs only after test is green.

Why the 30-minute bump wasn't enough

Profiled math/core locally (Sui 1.71.1):

• sui move test (no trace): ~5.5s.
• sui move test --trace (what CI runs): the single random test median_matches_sorted_reference_u256 alone takes 7m21s and writes 4.1 GB of traces. It quick_sort!s a Sui-generated random vector<u256> that can be very large, and --trace (full mode) records every VM instruction. The whole suite is many GB and never finishes inside 30 min.

--trace (full) is mandatory for sui move coverage lcov — the lighter --trace function-only / instruction-only modes produce no line records — so the cost can't simply be switched off.

The fix

@0xNeshi's split keeps the gate fast and moves the slow trace off the critical path. The coverage job also passes --rand-num-iters 1: coverage only needs each line executed once, and the full randomized property iterations still run in the fast test job, so this cuts trace volume without losing coverage.

Deferred follow-ups (math/core's domain)

• The durable cure for the trace time is bounding the random vector length in math/core's ~9 heavy median/quick_sort random tests (one of them produces the 4.1 GB above). Left out here since it changes those property tests.
• traces/ is not gitignored — worth adding so a local --trace run can't accidentally commit gigabytes.

🤖 Generated with Claude Code

Summary by CodeRabbit

• Chores
  • Split automated checks into two stages for a faster primary test run and a separate coverage run.
  • Kept the main test job on a shorter timeout while allowing coverage collection to run independently.
  • Adjusted coverage execution to reduce trace output and improve reliability of test reporting.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro

Run ID: 7225e0c8-ba84-4eb7-b295-7a9871d0dc85

📥 Commits

Reviewing files that changed from the base of the PR and between 093afa9 and 1aae159.

📒 Files selected for processing (1)

• .github/workflows/test.yml

🚧 Files skipped from review as they are similar to previous changes (1)

• .github/workflows/test.yml

---

📝 Walkthrough

Walkthrough

The workflow splits CI testing into separate test and coverage jobs, updates job-level permissions and timeout settings, and changes the coverage test invocation to reduce trace volume.

Changes

CI workflow test and coverage

Layer / File(s)	Summary
Test and coverage job setup .github/workflows/test.yml	The test job drops its job-level permissions block, and a separate coverage job is added with its own timeout, permissions, error handling, and strategy settings.
Coverage trace command .github/workflows/test.yml	The coverage job runs sui move test --trace --rand-num-iters 1 instead of the traced default iteration command.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Poem

A bunny hopped through CI light,
Two jobs now split the testing flight.
🐇 One traces less, one runs with care,
And coverage blooms with tidy flair.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly summarizes the main CI change: splitting fast tests from coverage tracing.
Description check	✅ Passed	The description thoroughly explains what changed, why, and the fix, but it omits the issue reference and checklist items from the template.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
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.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch ci/raise-test-timeout

---

_{Comment @coderabbitai help to get the list of available commands.}

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 96.26%. Comparing base (23af906) to head (1aae159).

Additional details and impacted files

@@             Coverage Diff             @@
##             main     #411       +/-   ##
===========================================
+ Coverage   83.26%   96.26%   +12.99%     
===========================================
  Files          29       29               
  Lines        2307     2968      +661     
  Branches      732      732               
===========================================
+ Hits         1921     2857      +936     
+ Misses        348       66      -282     
- Partials       38       45        +7     

Flag	Coverage Δ
contracts/access	65.46% <ø> (ø)
contracts/allowance	52.00% <ø> (ø)
contracts/finance	25.57% <ø> (ø)
contracts/utils	44.09% <ø> (ø)
math/core	86.71% <ø> (?)
math/fixed_point	60.22% <ø> (ø)

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[coderabbitai]

Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In @.github/workflows/test.yml:
- Around line 134-144: The coverage job is missing the setup dependency, so its
matrix cannot read needs.setup.outputs.packages. Update the coverage job’s needs
सूची to include setup alongside test, and verify the matrix expression in the
coverage job still references needs.setup.outputs.packages so the job can
instantiate correctly.

🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

---

ℹ️ Review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro

Run ID: 06d0bcc3-250c-4c84-a949-00336abb7bec

📥 Commits

Reviewing files that changed from the base of the PR and between 7325eec and 093afa9.

📒 Files selected for processing (1)

• .github/workflows/test.yml