chore(ci): remove dead Codecov upload steps + lock pins

[hyperpolymath]

Removed CI references to apps that are no longer installed on this account/org.

Why this is a fix, not a tidy-up

• Codecov was uninstalled as a GitHub App, but its action steps remain in workflows.
• The estate Actions allowlist already pruned codecov/codecov-action@* (standards/config/settings/actions-allowlist.json -> pruned_from_live_2026_09_02), so a workflow still calling it fails at job start instead of quietly no-op-ing.
• Snyk / Codacy / Mergify / ImgBot / CodeFactor are on the estate never-re-add list (standards spec §9, rulings R1/R4/R5).

Changes

• .github/workflows/ci.yml — applied

Notes

• actions.lock entries for the removed actions are deleted in this same commit (the same-PR regen rule in the CI/CD regularisation spec §6.4), so actions-lock-verify sees no drift.
• Removals are line-exact; no other line was reformatted and no comment was re-wrapped.
• Historical records (milestone logs, CHANGELOG, audit docs, specs) that describe the removal were deliberately left untouched.
• The gitar-approved label is intentionally frozen per docs/LABELS.adoc — it is not an active Gitar install, so it stays.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: ASSERTIVE

Plan: Advanced

Run ID: 8e2a25d8-a120-465d-92ca-3bda0e6a539d

📥 Commits

Reviewing files that changed from the base of the PR and between c5763f7 and 2024ef3.

📒 Files selected for processing (1)

• .github/workflows/ci.yml

💤 Files with no reviewable changes (1)

• .github/workflows/ci.yml

Included review availability: Your plan provides up to 1 included review per hour; 0 remain after this review.

---

📝 Summary

Summary by CodeRabbit

• Chores
  • Coverage reports are no longer uploaded to Codecov during continuous integration.
  • Coverage generation continues to run as part of the automated checks.

Walkthrough

The coverage job still generates cobertura.xml with cargo tarpaulin. It no longer uploads the report to Codecov.

Changes

Coverage workflow

Layer / File(s)	Summary
Remove Codecov upload .github/workflows/ci.yml	Removes the Codecov action from the coverage job. The job ends after the coverage report is generated.

Priority: ⬇️ Low

Estimated code review effort: 1 (Trivial) | ~5 minutes

Change: Other

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly identifies the Codecov CI removal, which matches the changeset. The reference to lock pins is not supported by the provided file summary, but the title remains related and specific.
Description check	✅ Passed	The description explains the removal of obsolete Codecov CI references and relates directly to the changeset. Additional claims about other applications and lock entries are not confirmed by the provi…
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0…
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.

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{A rabbit watched the coverage run
The report was made beneath the sun
No upload hopped away
The job stopped where it lay
Clean steps now mark the day}

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

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

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

See analysis details on SonarQube Cloud