docs: mention missing OverlayProvider requirement

[scarf005]

Description

mentions missing OverlayProvider requirement.

related: #176

Changes

• mentioned missing OverlayProvider requirement in README.

Motivation and Context

overlay-kit requires OverlayProvider yet it isn't documented in README.md

How Has This Been Tested?

documentation changes only

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation update

Checklist

• I have performed a self-review of my own code.
• My code is commented, particularly in hard-to-understand areas.
• I have made corresponding changes to the documentation.
• My changes generate no new warnings.
• I have added tests that prove my fix is effective or that my feature works.
• New and existing unit tests pass locally with my changes.
• Any dependent changes have been merged and published in downstream modules.

Further Comments

[changeset-bot]

⚠️ No Changeset found

Latest commit: 4102a9e

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

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Project	Deployment	Preview	Comments	Updated (UTC)
overlay-kit	Ready	Preview	Comment	Sep 17, 2025 1:34am

[jungpaeng]

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[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 93.68%. Comparing base (62e2304) to head (4102a9e).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #196   +/-   ##
=======================================
  Coverage   93.68%   93.68%           
=======================================
  Files          12       12           
  Lines         364      364           
  Branches       88       88           
=======================================
  Hits          341      341           
  Misses         22       22           
  Partials        1        1           

Components	Coverage Δ
overlay-kit	93.68% <ø> (ø)

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