add claude instructions

[kaitejohnson]

Summary by CodeRabbit

• Documentation
  • Added internal developer documentation guidance for the repository.

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Note: This release contains no user-facing changes or feature updates.

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Walkthrough

Adds a new documentation file CLAUDE.md containing comprehensive guidance for the evalwwforecasts R package, covering project scope, development commands, architecture, data flow, parallel processing, wwinference integration, implementation details, and code style requirements.

Changes

Cohort / File(s)	Change summary
Developer documentation CLAUDE.md	Introduces new guidance document detailing project structure, development workflows, targets pipeline architecture, data handling, model integration, output formats, implementation practices including roxyglobals usage and quantile handling, and code style conventions for repository contributors.

Pre-merge checks and finishing touches

✅ 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 'add claude instructions' clearly and concisely summarizes the main change: adding a new CLAUDE.md documentation file with guidance for working with the codebase.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

✨ Finishing touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch add-claude-md

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Actionable comments posted: 1

📜 Review details

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Review profile: CHILL

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📥 Commits

Reviewing files that changed from the base of the PR and between 5eaac07 and 8f1eb91.

📒 Files selected for processing (1)

• CLAUDE.md (1 hunks)

🧰 Additional context used

🪛 LanguageTool

CLAUDE.md

[uncategorized] ~153-~153: Use a comma before ‘but’ if it connects two independent clauses (unless they are closely connected and short).
Context: ...n/date is supposed to include wastewater but none is available, the model automatica...

(COMMA_COMPOUND_SENTENCE_2)

⏰ Context from checks skipped due to timeout of 90000ms. You can increase the timeout in your CodeRabbit configuration to a maximum of 15 minutes (900000ms). (5)

• GitHub Check: test-coverage
• GitHub Check: windows-latest (release)
• GitHub Check: macOS-latest (release)
• GitHub Check: ubuntu-latest (release)
• GitHub Check: lint-changed-files

[seabbs]

quite a bit of this looks like stuff that should be in none llm docs. It might be a good idea to make sure that is the case and instead get claude to signpost to those for itself. This is the way that i.e. Anthropic gets claude to look through its own docs