feat: added unit tests

[RohitKushvaha01]

No description provided.

[greptile-apps]

Greptile Summary

Adds a Vitest unit-testing setup and corrects quick-tools feedback cleanup.

• Adds unit tests for utility modules and quick-tools state helpers.
• Adds Vitest scripts, configuration, and development dependencies.
• Separates container and button deduplication while clearing quick-tools feedback.

Confidence Score: 4/5

The PR should not merge until the unit-test suite is connected to pull-request CI.

The previously reported automation gap remains: pull-request workflows can pass without executing the newly added Vitest suite.

Files Needing Attention: package.json and .github/workflows/ci.yml

Important Files Changed

Filename	Overview
package.json	Adds Vitest scripts and dependency, but the test command remains disconnected from pull-request CI.
src/handlers/quickToolsState.js	Separates visited containers from visited buttons so matching containers are correctly cleaned.
tests/unit/quickToolsState.test.js	Updates regression coverage to require cleanup of containers that themselves carry feedback state.
vitest.config.js	Configures source aliases and limits collection to the new unit-test directory.

_{Reviews (2): Last reviewed commit: "fix" | Re-trigger Greptile}