Fix CI traceability job: use full clone

[flyingrobots]

Summary

• Traceability CI job fails with Git command failed with code 128 because actions/checkout@v4 defaults to fetch-depth: 1 (shallow clone)
• git-warp materializes by walking commit parent chains via git show — in a shallow clone, patch commit objects aren't present locally
• Fix: set fetch-depth: 0 on the checkout step so the full object database is available before fetching WARP writer refs

Root cause

analyze → graphPort.getGraph() → WarpGraph.open({autoMaterialize: true})
  → _loadWriterPatches(writerId) → getNodeInfo(sha) → git show -s --format=... <sha>
  → exit code 128 (commit object not in shallow clone)

Test plan

• Lint passes
• 745 tests pass locally
• CI traceability job passes after merge

Summary by CodeRabbit

• Chores
  • Updated CI pipeline to fetch full repository history for improved traceability during builds
  • Enhanced CI automation with improved git configuration for repository operations

[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: cb7e04aa-3a56-405b-9faa-dbafa4f33051

📥 Commits

Reviewing files that changed from the base of the PR and between f1ec489 and 22949fb.

📒 Files selected for processing (1)

• .github/workflows/ci.yml

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📝 Walkthrough

Walkthrough

The CI workflow configuration is updated to enable full repository history fetching during checkout and adds a new setup step that configures git identity credentials (user.name and user.email) for graph materialization operations within the traceability job.

Changes

Cohort / File(s)	Summary
CI Workflow Configuration .github/workflows/ci.yml	Updated the traceability job's actions/checkout step to use fetch-depth: 0 for full history fetching. Added a new "Configure git identity for graph materialization" step that sets git user.name to "ci-bot" and git user.email to "ci@xyph.dev".

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Poem

🐰 A workflow takes flight with deeper roots,
Full history now flows through the system's shoots,
Git identity whispers "ci-bot" with care,
Graph materialization blooms in the air! 🌱

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title 'Fix CI traceability job: use full clone' directly and clearly summarizes the main change: switching from a shallow clone to a full clone in the CI traceability job to fix git command failures.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch fix/ci-traceability-shallow-clone

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