added cookbook for batch api

[Baldur-Hua-ai20labs]

Adds a complete Batch API cookbook demonstrating how to tag a CSV of customer reviews overnight.

Includes:

• End-to-end flow (CSV -> JSONL -> upload -> batch -> poll -> download -> merge)
• Error handling and recovery using error_file_id
• custom_id mapping for order-safe joins
• Before/after CSV examples
• Runnable Python script
• Sample dataset and input.jsonl

Jira

Summary by CodeRabbit

• Documentation
  • Added a comprehensive cookbook for overnight batch customer-review tagging with step-by-step workflow, error recovery, resubmission patterns, and production tips.
  • Added a “Batch processing” tutorial card to the Cookbook homepage linking the new guide.
  • Included a sample JSONL input and a full Python example script demonstrating end-to-end processing and result merging.

[coderabbitai]

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 001b5834-d189-4452-a5d8-7c89b3ff46fe

📥 Commits

Reviewing files that changed from the base of the PR and between 077227e and 26413a6.

📒 Files selected for processing (3)

• cookbook/batch-review-tagging.mdx
• cookbook/index.mdx
• docs.json

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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Actionable comments posted: 2

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In `@cookbook/batch-review-tagging.mdx`:
- Line 609: Update the example sentence in cookbook/batch-review-tagging.mdx
(the line starting "Cap batch size by your real SLO, not the 100 MB file
limit.") to remove the impossible "a million-line batch" example and replace it
with a realistic batch size within the Batch API limits (e.g., "a 50,000-line
batch" or "a batch near the 50k-line limit") so the guidance matches the
documented 50,000-line per-batch constraint and clarifies the recommendation to
pick chunk sizes that fit the completion_window.
- Line 609: Replace the incorrect "100 MB file limit" text with the correct
Batch API limit: "200 MB (209,715,200 bytes) file limit" in the sentence that
currently reads "**Cap batch size by your real SLO, not the 100 MB file
limit.**" (update the phrase so it reads "**Cap batch size by your real SLO, not
the 200 MB (209,715,200 bytes) file limit.**") to accurately reflect the API
limit in cookbook/batch-review-tagging.mdx.

🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 284e6a43-2e54-4515-a801-913396281c92

📥 Commits

Reviewing files that changed from the base of the PR and between fec4c27 and 35eaf15.

⛔ Files ignored due to path filters (1)

• cookbook/batch-review-tagging/reviews.csv is excluded by !**/*.csv

📒 Files selected for processing (2)

• cookbook/batch-review-tagging.mdx
• cookbook/batch-review-tagging/input.jsonl