initial release

[funkyshu]

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[Copilot]

Pull request overview

This PR delivers the initial ReleaseGen v2 codebase: a changelog-driven release automation tool (Go CLI + Docker image) that discovers per-module CHANGELOG.md files, determines the next SemVer, rewrites changelogs, commits/tags, and publishes matching GitHub Releases, with CI workflows and supporting docs.

Changes:

• Adds the core ReleaseGen implementation (config parsing/validation, changelog parsing/classification/rewriting, repo discovery, git operations, GitHub release publication, runner orchestration).
• Adds CI/release workflows (tests, lint, CodeQL, coverage gating, changelog enforcement) plus Docker build.
• Adds foundational project docs (README, PRD, architecture), license, and community files.

Reviewed changes

Copilot reviewed 50 out of 55 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
README.md	Full project overview, usage, workflow example, and FAQ.
LICENSE.md	Adds MIT license text.
CHANGELOG.md	Seeds Keep a Changelog formatted changelog with initial unreleased entry.
go.mod	Defines module + dependencies for ReleaseGen.
go.sum	Locks dependency checksums.
.testcoverage.yml	Coverage gate configuration for go-test-coverage.
.prenup.yaml	Local/dev task runner configuration (tests, lint, changelog check).
deployments/Dockerfile	Multi-stage build for static ReleaseGen binary + alpine runtime image.
docs/PRD.md	Product requirements document defining behavior/contract.
docs/ARCHITECTURE.md	Maps PRD sections to packages and explains repo layout.
CODE_OF_CONDUCT.md	Contributor Covenant code of conduct.
cmd/releasegen/main.go	CLI entrypoint: env/flag parsing, wiring, exit-code mapping, self-release stdout behavior.
cmd/releasegen/main_test.go	Tests flag overrides and exit-code mapping behavior.
internal/config/bump.go	Defines bump enum + parsing for bump types.
internal/config/config.go	Env parsing + validation for runtime configuration.
internal/config/config_test.go	Tests config parsing and validation helpers.
internal/changelog/errors.go	Defines changelog-specific sentinel errors.
internal/changelog/parser.go	Extracts unreleased section and current version from changelog text.
internal/changelog/parser_test.go	Tests/fuzzes changelog parsing logic.
internal/changelog/classifier.go	Classifies unreleased section into SemVer bump type (incl. custom types).
internal/changelog/classifier_test.go	Tests bump classification and version increment behavior.
internal/changelog/rewriter.go	Rewrites changelog by promoting [Unreleased] into a linked, dated release section.
internal/changelog/rewriter_test.go	Tests rewrite output and release URL/name helpers.
internal/changelog/update.go	End-to-end pure update pipeline (extract → classify → bump/override → rewrite).
internal/changelog/update_test.go	Tests update pipeline including manual override behavior.
internal/discovery/discovery.go	Finds candidate changelogs to release (excludes, per-module latest tag, modified-since-tag check).
internal/discovery/discovery_test.go	Tests discovery behavior and error propagation.
internal/forge/forge.go	Defines releaser interface + sentinel error.
internal/forge/github.go	GitHub implementation of release publishing via go-github.
internal/forge/github_test.go	Tests GitHub releaser against httptest server.
internal/forge/mocks/mocks.go	Mockery-generated forge.Releaser mock.
internal/logging/logging.go	Slog handler + group markers with GitHub Actions formatting.
internal/logging/logging_test.go	Tests logging output formats, levels, and CI detection.
internal/runner/runner.go	Orchestrates discovery → changelog update → commit/tag/push → GitHub release + summary file.
internal/runner/runner_test.go	Tests runner outcomes (happy path, skip, dry-run, failures, summary file, self-release tracking).
internal/vcs/vcs.go	Defines VCS abstraction + options structs and sentinel error.
internal/vcs/git.go	go-git implementation for discovery, tag reachability, modified-since-tag, commit/tag/push, token scrubbing.
internal/vcs/git_test.go	Integration tests for GitRepo + helper selection logic.
internal/vcs/extract_module_name_internal_test.go	Tests module name extraction from tag names.
internal/vcs/scrub_internal_test.go	Tests token scrubbing from error messages.
internal/vcs/mocks/mocks.go	Mockery-generated vcs.Repo mock.
.github/workflows/releasegen.yml	Release workflow: build+run ReleaseGen and (if self-released) build/push Docker image.
.github/workflows/ci.yml	PR test workflow.
.github/workflows/golangci-lint.yml	PR lint workflow with per-module matrix.
.github/workflows/go-test-coverage.yml	PR coverage workflow using go-test-coverage.
.github/workflows/ensure_changelog.yml	PR changelog enforcement workflow.
.github/workflows/codeql.yml	CodeQL advanced scanning workflow.
.github/workflows/scripts/changelog.sh	Script enforcing directory-level changelog updates.
.github/ISSUE_TEMPLATE/bug_report.md	Bug report template.
.github/ISSUE_TEMPLATE/feature_request.md	Feature request template.
.github/ISSUE_TEMPLATE/custom.md	Custom issue template stub.

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