chore: add .coderabbit.yaml to silence the docstring-coverage pre-merge check

[PhysShell]

Adds .coderabbit.yaml to turn off CodeRabbit's Docstring Coverage pre-merge check, which has been reporting a false ~0% as an advisory ❌ on recent PRs (#75, #76).

The check measures docstring-style coverage across the whole PR diff, but Own.NET documents to its own conventions, not the ones the heuristic counts:

• the C# Roslyn extractor (frontend/roslyn/**) carries a // line-comment doc block above every helper — the file's established house style, deliberately not /// XML doc comments;
• the Python core and tooling (ownlang/**, scripts/**, tests/**) already carry module- and function-level docstrings;
• the corpus (corpus/**) is hand-written .cs / .own reductions — terminal demonstration fixtures, not an authored API surface.

Retrofitting /// onto the C# to satisfy the metric would break that consistent // style, so the advisory check is turned off rather than chased.

reviews:
  pre_merge_checks:
    docstrings:
      mode: "off"

Config-only; verified it parses (docstrings.mode == "off", a string). No code or CI changes.

🤖 Generated with Claude Code

https://claude.ai/code/session_01Rg8kSk1YT14x7A1vo5zgED

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Generated by Claude Code

Summary by CodeRabbit

• Chores
  • Updated CI/pre-merge validation configuration to adjust coverage check requirements.

[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 Plus

Run ID: 208be556-1fa0-41f3-a71e-0fcb269f88d3

📥 Commits

Reviewing files that changed from the base of the PR and between 3b6dd4b and 5a52c91.

📒 Files selected for processing (1)

• .coderabbit.yaml

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📝 Walkthrough

Walkthrough

The .coderabbit.yaml configuration file is updated to disable the pre-merge docstrings coverage check by setting reviews.pre_merge_checks.docstrings.mode to "off". No code logic or other configuration is changed.

Changes

CodeRabbit Configuration Update

Layer / File(s)	Summary
Turn off pre-merge docstrings mode .coderabbit.yaml	reviews.pre_merge_checks.docstrings.mode is set to "off", disabling the docstring coverage gate in pre-merge checks.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

Poem

🐇 A bunny hopped through the config one day,
And flipped a small switch to send docstrings away.
"No more pre-merge checks blocking my run!"
The rabbit declared — and the pipeline said "Done!"
With one little off, the CI hops on. 🌿

🚥 Pre-merge checks | ✅ 4

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and accurately describes the primary change: adding a .coderabbit.yaml configuration file to disable the docstring-coverage pre-merge 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.

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

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch claude/coderabbit-config

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