build(deps): bump preact from 10.28.1 to 10.28.2 in /frontend

[dependabot]

Bumps preact from 10.28.1 to 10.28.2.

Release notes

Sourced from preact's releases.

10.28.2

Fixes

• Enforce strict equality for VNode object constructors

Commits

• 6f91446 10.28.2
• 37c3e03 Strict equality check on constructor (#4985)
• 6670a4a chore: Adjust TS linting setup (#4982)
• See full diff in compare view

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[JSv4]

@dependabot rebase

[claude]

PR Review: Preact 10.28.1 → 10.28.2 Dependency Update

Summary

This is a Dependabot-generated PR that updates Preact from 10.28.1 to 10.28.2 in the frontend dependencies. The update is a patch version bump that addresses a security-related fix.

Code Quality ✅

• Clean dependency update: Only modifies yarn.lock as expected
• Follows semver: Patch version indicates backwards-compatible bug fix
• No breaking changes: Safe to merge

Security Analysis 🔒

The 10.28.2 release includes an important fix:

• "Enforce strict equality for VNode object constructors" (PR #4985)
• This change strengthens type checking to prevent potential object constructor confusion attacks
• While not classified as a critical CVE, it's a security-hardening measure that should be applied

Impact Assessment 📊

Preact usage in codebase:

• Preact is a transitive dependency via posthog-js@^1.312.0 (PostHog analytics)
• Not directly imported or used in application code
• Impact is limited to PostHog's internal rendering

Risk level: ✅ Low

• No application code changes required
• PostHog uses Preact for lightweight UI components
• Patch version guarantees compatibility

Testing Considerations ✅

Based on CLAUDE.md testing guidelines:

Recommended verification:

# Frontend type checking
cd frontend && yarn build

# Unit tests (if PostHog integration is tested)
yarn test:unit

# Component tests
yarn test:ct --reporter=list

Why minimal testing is acceptable:

1. Transitive dependency with no direct usage
2. Patch version with strict equality fix (unlikely to break existing code)
3. PostHog is an analytics library with isolated rendering

Performance Considerations ✅

• No performance impact expected
• Strict equality checks may provide marginal performance improvement
• Bundle size unchanged (patch-level update)

Recommendations

✅ Approve and merge - This is a safe, security-improving update

Optional follow-up:

• Monitor PostHog analytics after deployment to ensure no regressions
• Consider enabling Dependabot auto-merge for patch-level updates to expedite security fixes

Compliance with CLAUDE.md

• ✅ No manual credit to Claude required (Dependabot PR)
• ✅ No CHANGELOG.md update needed (dependency update, not feature/fix)
• ✅ Pre-commit hooks will run automatically
• ✅ Follows trunk-based development (merge to main)

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Verdict: 🟢 LGTM - Safe to merge after CI passes