enforce coverage 80

[devlux76]

• feat: add coverage enforcement for tests and update CI configuration
• Enforce minimum 80% test coverage in CI + local pre-push hook
• Relax branch coverage enforcement while keeping 80% minimum line/function/statement coverage

[Copilot]

Pull request overview

Adds test coverage enforcement to the Vitest setup so CI (and local pre-push) fail if overall coverage drops below an 80% baseline for lines/functions/statements.

Changes:

• Introduces vitest.config.ts with V8 coverage reporting and 80% thresholds (branch threshold relaxed).
• Adds test:coverage script plus Husky pre-push hook to run coverage locally.
• Updates CI workflow to run coverage-enforced tests instead of plain unit tests.

Reviewed changes

Copilot reviewed 4 out of 5 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
vitest.config.ts	New Vitest configuration enabling coverage collection and setting thresholds/exclusions.
package.json	Adds test:coverage, installs @vitest/coverage-v8, and sets up Husky via prepare.
bun.lock	Locks newly added dependencies for coverage + Husky.
.husky/pre-push	Runs bun run test:coverage before allowing pushes.
.github/workflows/ci.yml	Switches CI test step to bun run test:coverage for enforcement.

[Copilot]

@devlux76 I've opened a new pull request, #88, to work on those changes. Once the pull request is ready, I'll request review from you.