chore: align CI with wolfstar.rocks conventions and add knip

[RedStar071]

🔗 Linked issue

N/A

🧭 Context

The CI workflow should follow the same conventions used across other Wolfstar projects (notably wolfstar.rocks), while keeping the library monorepo stack (pnpm, turbo, vitest, oxlint, changesets).

📚 Description

This PR realigns .github/workflows/ci.yml with wolfstar.rocks CI conventions and adds unused-code detection via Knip.

Key changes

Area	Before	After
Triggers	push to main, all PRs	PRs to main/release, push to main, merge_group on main
Concurrency	Cancel only on PRs	Always cancel in-progress runs
Runners	ubuntu-latest	ubuntu-24.04-arm
Job naming	Plain names	Emoji-prefixed names (lint, build, unit, knip, changesets)
Codecov	Separate upload job + artifact	Inline upload of JUnit results and Clover coverage in the unit test job
Unused code	Not checked	New knip job with root knip.json configuration
Problem matchers	oxlint/oxfmt matchers in lint job	Removed (tsc matcher kept for typecheck)
.gitignore	—	Ignore test artifacts (*.junit.xml, grouped coverage/)

Type of Change

• New feature (non-breaking change which adds functionality)
• Bug fix (non-breaking change which fixes an issue)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation change
• Workflow / CI change

Pre-flight Checklist

• I have read the Contributing Guidelines (if applicable)
• My code follows the code style of this project
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• I have updated the documentation accordingly
• I added a changeset with pnpm changeset (or pnpm changeset add --empty if no release is needed). See .changeset/README.md.

[changeset-bot]

⚠️ No Changeset found

Latest commit: b376e10

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

This PR includes no changesets

When changesets are added to this PR, you'll see the packages that this PR includes changesets for and the associated semver types

Click here to learn what changesets are, and how to add one.

Click here if you're a maintainer who wants to add a changeset to this PR

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ℹ️ Review info

⚙️ Run configuration

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📥 Commits

Reviewing files that changed from the base of the PR and between da0a1aa and b376e10.

⛔ Files ignored due to path filters (1)

• pnpm-lock.yaml is excluded by !**/pnpm-lock.yaml

📒 Files selected for processing (6)

• .github/problemMatchers/oxfmt.json
• .github/problemMatchers/oxlint.json
• .github/workflows/ci.yml
• .gitignore
• knip.json
• package.json

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch chore/improve-workflows

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 41.00%. Comparing base (da0a1aa) to head (b376e10).
✅ All tests successful. No failed tests found.

❗ There is a different number of reports uploaded between BASE (da0a1aa) and HEAD (b376e10). Click for more details.

HEAD has 1 upload less than BASE

Flag	BASE (da0a1aa)	HEAD (b376e10)
	1	0

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #63      +/-   ##
==========================================
- Coverage   49.54%   41.00%   -8.54%     
==========================================
  Files          49       49              
  Lines         870      856      -14     
  Branches      200      193       -7     
==========================================
- Hits          431      351      -80     
+ Misses        435      338      -97     
- Partials        4      167     +163     

Flag	Coverage Δ
unit	41.00% <ø> (?)

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