fix: add missing mode field to Convex where validators

[rit3sh-x]

Summary

• Better Auth now sends a mode field (sensitive | insensitive) in where clauses
• The Convex validators in adapterWhereValidator and whereValidator did not accept this field,
  causing 111 test failures
• Added mode as an optional field to both validators

Changes

• src/client/adapter-utils.ts — added mode to adapterWhereValidator
• src/client/create-api.ts — added mode to local whereValidator

Test plan

• All 165 tests passing (previously 111 failing)
• No type errors
• Lint clean

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Summary by CodeRabbit

• New Features
  • Query filters now support an optional mode parameter to specify case-sensitive ("sensitive") or case-insensitive ("insensitive") string matching.

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[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 6eb22fc5-c3da-496f-a678-8d4cd4598c60

📥 Commits

Reviewing files that changed from the base of the PR and between 8587abc and b6680ce.

📒 Files selected for processing (2)

• src/client/adapter-utils.ts
• src/client/create-api.ts

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📝 Walkthrough

Walkthrough

Two validator schemas are updated to include an optional mode field restricted to "sensitive" and "insensitive" literals on where objects, ensuring consistency between adapter and API validators.

Changes

Cohort / File(s)	Summary
Where Validator Enhancement src/client/adapter-utils.ts, src/client/create-api.ts	Added optional mode: "sensitive" | "insensitive" field to where clause validators for consistency across adapter and create-api validators.

Possibly related issues

• Bug: where.mode from better-auth >=1.6 is rejected (ArgumentValidationError) #324: Directly addresses the validator mismatch by adding the optional mode field to both adapterWhereValidator and whereValidator in the described locations.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~5 minutes

Poem

🐰 Two validators now hum in perfect tune,
Where clauses gain modes—insensitive or soon—
Sensitive choices bloom in the schema's light,
Adapter and API dancing in sync tonight! 🌙✨

🚥 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: add missing mode field to Convex where validators' directly and accurately summarizes the main change: adding a missing mode field to where clause validators in Convex.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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[stevebrainng]

How fast can this be merged?

[erquhart]

Thanks for this - closing in favor of #323.