Add knip and drop the unused DEFAULT_BATCH_CONFIG export

[poluruprvn]

knip.json skips the generated src/gen, treats scripts/*.mjs as entries since the Makefile runs them, and ignores @bufbuild/protoc-gen-es, which buf.gen.yaml loads as a local plugin. DEFAULT_BATCH_CONFIG is only used inside batch.ts and the package exports never exposed it, matching sdk-web where it was never exported.

Summary by CodeRabbit

• Chores
  • Added Knip configuration and a script for running dependency and code usage checks.
• API Changes
  • DEFAULT_BATCH_CONFIG is no longer exported. Its default values are unchanged. The constant is no longer available to import directly.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

• Configuration used: Organization UI
• Review profile: CHILL
• Plan: Advanced
• Run ID: 25037e86-7d6b-4e4c-8825-12550c330c26

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📥 Commits

Reviewing files that changed from the base of the PR and between eb0b3f6 and b9e1897.

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⛔ Files ignored due to path filters (1)

• bun.lock is excluded by !**/*.lock

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📒 Files selected for processing (3)

• knip.json
• package.json
• src/batch.ts

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📝 Walkthrough

Walkthrough

The pull request adds Knip configuration and a package command, and removes the export from DEFAULT_BATCH_CONFIG. Its default values remain unchanged.

Changes

Knip setup and export visibility

Layer / File(s)	Summary
Configure and run Knip knip.json, package.json	knip.json configures entry files, ignored generated source, and an ignored dependency. package.json adds Knip as a development dependency and adds a script to run it.
Change batch config export src/batch.ts	DEFAULT_BATCH_CONFIG is no longer exported. Its default values remain unchanged.

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Priority: ⬇️ Low

Change: Other

Merge Risk: ⚪ Minimal · up to b9e18

The package entrypoint remains discoverable, and the removed export was not part of the exposed package API. The change is ready to merge after normal checks.

Pre-merge checks | 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check		Check skipped - CodeRabbit’s high-level summary is enabled.
Title check		The title clearly and concisely describes both main changes: adding Knip and removing the unused DEFAULT_BATCH_CONFIG export.
Docstring Coverage		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 1…
Linked Issues check		Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check		Check skipped because no linked issues were found for this pull request.

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✨ Finishing Touches

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