[plan] implement ci/cd quality gates from pipeline assessment

[github-actions]

Overview

This tracking issue implements the high-priority recommendations from the CI/CD Pipeline Assessment to improve PR quality gates and code quality enforcement.

Source: Discussion #270 - CI/CD Pipeline and PR Quality Gates Assessment

Current State

The repository has a strong CI/CD foundation with 12 active workflows, but is missing critical code quality enforcement:

• ❌ ESLint configured but not running in CI
• ❌ No TypeScript type checking (separate from build)
• ❌ No code formatting enforcement
• ❌ Only 3 of 7 integration tests run in CI

Planned Implementation

This plan addresses the 4 immediate high-priority fixes identified in the assessment:

Phase 1: Code Quality Gates (Sub-issues #1-3)

1. Add ESLint enforcement to CI/CD
2. Add TypeScript type checking with --noEmit
3. Add Prettier formatting enforcement

Phase 2: Test Coverage (Sub-issue #4)

4. Run all integration tests in CI

Expected Impact

• Code quality: 40-50% improvement in pre-merge issue detection
• Developer experience: Faster feedback loop, fewer merge conflicts
• Implementation time: 1-2 days total

Success Criteria

• All 4 sub-issues completed and merged
• New quality gates running on all PRs
• No false positives blocking valid PRs
• Documentation updated with new CI requirements

AI generated by Plan Command for discussion #270