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This PR introduces a development environment setup and code quality enhancements
🐳 Development Container Architecture
Two-tier container strategy: CI base container (~800MB) for build/test, extended dev container (~1.2GB) with Docker/Kind for local development
Optimized CI pipeline: Separate jobs for building CI container, validating dev container, linting, testing, and e2e tests
Hybrid e2e testing: Kind cluster runs on GitHub Actions runner, tests execute in CI container
Local development: VS Code devcontainer with all tools pre-installed (Go 1.25, kubectl, helm, kustomize, golangci-lint, Kind)
📋 Key Changes
Infrastructure:
New .devcontainer/Dockerfile.ci - CI-focused base image
New .devcontainer/Dockerfile - Full dev environment with Docker support
Restructured .github/workflows/ci.yml - Modular pipeline with container validation
Simplified Makefile - Tools pre-installed in containers, graceful Kind handling
Code Quality:
Enhanced .golangci.yml - Comprehensive "golden config" with 60+ linters
Fixed 347 linting issues through code improvements and proper exclusions
Major refactorings: GitRepoConfig controller split into focused methods (reduced complexity 26→<10)
Added internal/controller/constants.go - Centralized timing/retry constants
Testing:
Converted assertions to require.NoError for setup checks
Replaced os.MkdirTemp with t.TempDir() for automatic cleanup
All tests passing with >90% coverage
Documentation:
New docs/COMPLETE_SOLUTION.md - Architecture overview
New docs/E2E_CI_FIX.md - E2E testing solution
New docs/LINTING_CONFIGURATION_ADJUSTMENTS.md - Code quality improvements
📊 Impact
+2,429/-667 lines across 44 files
30 commits addressing infrastructure, code quality, and documentation
Zero linting issues (down from 347)
All tests passing (unit + e2e)
This PR establishes a production-ready development workflow with consistent tooling, improved code quality, and comprehensive CI/CD validation.