feat(releaser): release v1.4.0 — GitHub, SSH agent, configurable bumps

- GitHub release support: internal/ghclient (no SDK, minimal HTTP client);
  GITHUB_TOKEN env var; github.token/github.repo config; GitHub takes
  precedence over GitLab when both are configured; publisher interface
  (releasePublisher) in cmd/main.go makes providers interchangeable
- SSH agent push: gitutil.Push() now tries gitssh.NewSSHAgentAuth for
  git@/ssh:// remotes before falling back to the system git binary
- --release-env-file flag: override dotenv artifact path; pass "" to disable
- git.releasable_types config: filter which commit types trigger a bump
  (defaults to fix, feat, breaking); useful for maintenance branches
- commits.Group(), ExtractSubject(), ReleasableSet() exported helpers:
  notes.go and changelog.go now delegate to these instead of duplicating
- CHANGELOG deduplication guard: changelog.Update() is idempotent — skips
  write if ## [version] section already exists
- Always load config sources: LoadWithSources() called unconditionally;
  removes the dual config path that previously only tracked sources in
  --verbose mode
- .releaser.gitlab-ci.yml: adds artifacts: reports: dotenv: release.env

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

.releaser.gitlab-ci.yml

@@ -45,5 +45,9 @@
         --branch "$CI_COMMIT_BRANCH"
         $RELEASER_EXTRA_ARGS
 
+  artifacts:
+    reports:
+      dotenv: release.env   # exposes NEXT_VERSION to downstream jobs
+
   environment:
     name: release/$CI_COMMIT_BRANCH

CHANGELOG.md

@@ -3,6 +3,43 @@
 All notable changes to this project will be documented in this file.
 Format: [Keep a Changelog](https://keepachangelog.com/en/1.1.0/).
 
+## [1.4.0] - 2026-07-11
+
+### Added
+
+- **GitHub release support** — new `internal/ghclient` package (minimal HTTP client, no SDK); configured via `github.token` + `github.repo` in `.releaser.yml` or `GITHUB_TOKEN` env var; GitHub takes precedence over GitLab when both are configured
+- **SSH agent push** — `gitutil.Push()` now attempts go-git SSH agent auth (`gitssh.NewSSHAgentAuth`) for `git@` / `ssh://` remotes before falling back to the system `git` binary; no extra configuration needed
+- **`--release-env-file` flag** — override the dotenv artifact path (relative to repo root; default `release.env`); pass `""` to disable writing the file entirely (e.g. for local runs)
+- **`git.releasable_types` config** — opt-in list of commit types that count as releasable (`fix`, `feat`, `breaking`); defaults to all three; useful for maintenance branches where some types should not trigger a release
+- **`commits.Group()`, `ExtractSubject()`, `ReleasableSet()`** — exported helpers in `internal/commits`; shared by `notes` and `changelog`, eliminating duplicated grouping and subject-extraction logic
+- **CHANGELOG deduplication guard** — `changelog.Update()` is now idempotent; skips the write if a `## [version]` section already exists, preventing duplicate entries on CI reruns
+- **Publisher interface** — `releasePublisher` interface + `buildPublisher()` in `cmd/main.go`; GitLab and GitHub are now interchangeable backends; new providers can be added without touching the orchestration logic
+- **`artifacts: reports: dotenv: release.env`** in `.releaser.gitlab-ci.yml` — exposes `NEXT_VERSION` to downstream GitLab CI jobs out of the box
+
+### Changed
+
+- **Always load config sources** — `LoadWithSources()` is now called unconditionally instead of only in `--verbose` mode; single code path, no behavioural difference
+- **`version.Next()` signature** — accepts a `map[commits.Type]bool` releasable set as a fifth parameter; `nil` defaults to all three types (no change to existing behaviour)
+- **Verbose config table** — now includes `git.releasable_types`, `github.token`, and `github.repo` rows
+
+## [1.3.0] - 2026-07-07
+
+### Added
+
+- **`release.env` dotenv artifact** — on every real release (not `--dry-run`) a `release.env` file is written to the repository root containing `NEXT_VERSION=<tag>`; the file is never committed, allowing GitLab CI to expose it as a dotenv artifact and pass the version to downstream jobs (deploy, notify, etc.)
+
+## [1.2.0] - 2026-07-07
+
+### Added
+
+- **`--verbose` flag** — prints a configuration table (each key, its value, and source: `default` / `config file` / `env: VARNAME` / `flag: --name`), lists every commit since the last tag with its parsed type and bump decision, and shows the final version choice; all output goes to stderr
+- **Colored, structured CLI output** — progress lines use `·` / `✓` / `!` prefix symbols; `--verbose` mode uses `▸` section headers (configuration / branch / commits / version); commit type column colored by kind (cyan=feat, green=fix, red=breaking); config source tags colored; respects `NO_COLOR` and `TERM=dumb`; auto-disabled when stderr is not a TTY
+- **Name and version header** — `releaser  vX.Y.Z` printed to stderr at the start of every invocation
+
+### Changed
+
+- **Default `tag_prefix` is now empty** — tags are bare version numbers (`1.2.3`) by default; add `tag_prefix: "v"` to `.releaser.yml` or pass `--tag-prefix v` to opt in to the `v`-prefixed convention
+
 ## [1.1.0] - 2026-07-07
 
 ### Added

README.md

@@ -1,6 +1,6 @@
 # releaser
 
-![release](https://img.shields.io/badge/release-v1.1.0-blue.svg)
+![release](https://img.shields.io/badge/release-v1.4.0-blue.svg)
 
 A CI-friendly release automation tool for GitFlow workflows using Conventional Commits.
 
@@ -8,22 +8,22 @@ A CI-friendly release automation tool for GitFlow workflows using Conventional C
 
 Standard tools like `semantic-release` are designed for trunk-based development. In a GitFlow setup with versioned release branches (`release/1.1`, `release/1.2`), they either fail to respect the branch's version range or require brittle configuration.
 
-`releaser` is built for this exact workflow: it reads the branch name to pin the `major.minor`, parses Conventional Commits to determine the patch increment, and handles everything from `pom.xml` update to GitLab tag+release creation.
+`releaser` is built for this exact workflow: it reads the branch name to pin the `major.minor`, parses Conventional Commits to determine the patch increment, and handles everything from `pom.xml` update to GitLab/GitHub tag+release creation.
 
 ## How it works
 
 ```
 release/1.2 branch
-  └─ last tag: v1.2.3 (or none → start at v1.2.0)
+  └─ last tag: 1.2.3 (or none → start at 1.2.0)
        └─ commits since tag → Conventional Commits analysis
-            └─ next version: v1.2.4
+            └─ next version: 1.2.4
 ```
 
 1. **Branch parsing** — extracts `major.minor` from branch name (e.g. `release/1.2` → `1.2`)
 2. **Tag discovery** — finds the latest tag matching `major.minor.*` on the current branch
 3. **Commit analysis** — parses Conventional Commits between last tag and HEAD
 4. **Version bump** — increments patch (the minor is owned by the branch)
-5. **Release** — updates `pom.xml`, commits, tags, creates GitLab release
+5. **Release** — updates `pom.xml`, commits, tags, creates GitLab or GitHub release
 
 ## Version bump rules
 
@@ -44,13 +44,13 @@ releaser --init
 # Simulate next version (no side effects)
 releaser --dry-run
 
-# Full release: update pom.xml + CHANGELOG.md, commit, tag, push, GitLab release
+# Full release: update pom.xml + CHANGELOG.md, commit, tag, push, create release
 releaser
 
-# Commit and tag locally — skip push and GitLab release
+# Commit and tag locally — skip push and release creation
 releaser --no-push
 
-# Push commit and tag but skip creating the GitLab release
+# Push commit and tag but skip creating the release
 releaser --no-release
 
 # Update files but stop before committing (review first)
@@ -64,6 +64,9 @@ releaser --branch release/1.2
 # Write changelog to a custom file
 releaser --changelog-file CHANGES.md
 
+# Show configuration sources, commit list, and version decision
+releaser --verbose --dry-run
+
 # Target a specific pom.xml
 releaser --pom path/to/pom.xml
 
@@ -72,6 +75,9 @@ releaser --tag-prefix ""
 
 # Override branch pattern (e.g. also match hotfix/ branches)
 releaser --branch-pattern "^(?:.*/)?(?:release|hotfix)/(\d+)\.(\d+)$"
+
+# Write dotenv artifact to a custom path (or "" to disable)
+releaser --release-env-file deploy/version.env
 ```
 
 ## Configuration
@@ -80,11 +86,15 @@ releaser --branch-pattern "^(?:.*/)?(?:release|hotfix)/(\d+)\.(\d+)$"
 
 ```yaml
 git:
-  tag_prefix: "v"                                    # set to "" for tags without prefix
+  tag_prefix: ""                                     # default: no prefix; set to "v" for v-prefixed tags
   branch_pattern: "^(?:.*/)?release/(\\d+)\\.(\\d+)$"  # two capture groups: major, minor
   commit_message: "chore(release): {version} [skip ci]"
   author_name: ""                                    # defaults to git config user.name
   author_email: ""                                   # defaults to git config user.email
+  releasable_types:                                  # default: all three
+    - fix
+    - feat
+    - breaking
 
 maven:
   pom_path: "pom.xml"                                # relative to repo root
@@ -93,18 +103,23 @@ gitlab:
   url: "https://gitlab.example.com"                  # or env CI_SERVER_URL
   token: ""                                          # env GITLAB_TOKEN (never commit this)
   project: ""                                        # env CI_PROJECT_ID or CI_PROJECT_PATH
+
+github:
+  token: ""                                          # env GITHUB_TOKEN (never commit this)
+  repo: ""                                           # "owner/repo" format
 ```
 
 ### Environment variables
 
-GitLab-related fields are automatically read from the CI environment if not set in the config file:
-
 | Variable           | Used for                          |
-|-------------------|-----------------------------------|
+|--------------------|-----------------------------------|
-| `GITLAB_TOKEN`    | API auth + HTTPS push auth        |
+| `GITLAB_TOKEN`     | GitLab API auth + HTTPS push auth |
 | `CI_SERVER_URL`    | GitLab instance URL               |
-| `CI_PROJECT_ID`   | Project identifier (numeric)      |
+| `CI_PROJECT_ID`    | GitLab project identifier (numeric) |
-| `CI_PROJECT_PATH` | Project identifier (fallback)     |
+| `CI_PROJECT_PATH`  | GitLab project identifier (fallback) |
+| `GITHUB_TOKEN`     | GitHub API auth                   |
+
+When both `github.*` and `gitlab.*` are configured, GitHub takes precedence.
 
 ## CI integration (GitLab CI example)
 
@@ -118,4 +133,7 @@ release:
     GITLAB_TOKEN: $RELEASE_TOKEN   # project/group CI variable with api + write_repository scope
   script:
     - releaser
+  artifacts:
+    reports:
+      dotenv: release.env          # exposes NEXT_VERSION to downstream jobs
 ```

ROADMAP.md

@@ -66,11 +66,18 @@
 
 - [x] ~~Integration tests against a real Git repo (with fixture commits and tags)~~ — ✓ shipped v0.4.0 (96% coverage, real in-memory repos)
 - [x] ~~Cross-compilation in CI (linux/amd64, linux/arm64, darwin/amd64)~~ — ✓ shipped v0.4.0 (Gitea release workflow, + darwin/arm64 + windows/amd64)
+- [x] ~~`--verbose` flag~~ — ✓ shipped v1.2.0 (shows config sources, commit analysis, version decision)
+- [x] ~~Colored, structured CLI output~~ — ✓ shipped v1.2.0 (`·` / `✓` / `!` symbols, `▸` section headers in verbose, TTY-aware ANSI colors)
+- [x] ~~Name and version header on every run~~ — ✓ shipped v1.2.0
+- [x] ~~Default tag prefix changed to empty~~ — ✓ shipped v1.2.0 (bare `1.2.3` tags by default; opt in to `v` prefix via config)
+- [x] ~~`release.env` dotenv artifact~~ — ✓ shipped v1.3.0 (`NEXT_VERSION=<tag>` written on every release for GitLab CI downstream jobs)
+- [x] ~~GitHub release support~~ — ✓ shipped v1.4.0 (`internal/ghclient`, `GITHUB_TOKEN` env, `github.token`/`github.repo` config; GitHub takes precedence over GitLab)
+- [x] ~~SSH agent push~~ — ✓ shipped v1.4.0 (go-git `gitssh.NewSSHAgentAuth` for `git@`/`ssh://` remotes)
+- [x] ~~Configurable bump rules~~ — ✓ shipped v1.4.0 (`git.releasable_types` config; filter which commit types trigger a release)
 - [ ] Documentation site
 
 ## Future / backlog
 
-- GitHub release support (parity with GitLab)
 - Multi-module Maven support (multiple `pom.xml` paths)
 - Gradle support (`build.gradle` / `build.gradle.kts`)
 - `package.json` version bump support (Node.js projects)

cmd/main.go

@@ -15,8 +15,9 @@ import (
 	"git.k3nny.fr/releaser/internal/changelog"
 	"git.k3nny.fr/releaser/internal/commits"
 	"git.k3nny.fr/releaser/internal/config"
-	"git.k3nny.fr/releaser/internal/glclient"
+	"git.k3nny.fr/releaser/internal/ghclient"
 	"git.k3nny.fr/releaser/internal/gitutil"
+	"git.k3nny.fr/releaser/internal/glclient"
 	"git.k3nny.fr/releaser/internal/maven"
 	"git.k3nny.fr/releaser/internal/notes"
 	semver "git.k3nny.fr/releaser/internal/version"
@@ -27,7 +28,7 @@ const defaultConfigTemplate = `# .releaser.yml — configuration for git.k3nny.f
 # CLI flags always take precedence over values set here.
 
 git:
-  # Prefix prepended to every version tag.
+  # Prefix prepended to every version tag (default: no prefix).
   # tag_prefix: "v"
 
   # Regex that identifies release branches. Must contain exactly two capture
@@ -43,6 +44,12 @@ git:
   # author_name: ""
   # author_email: ""
 
+  # Limit which commit types trigger a release (default: fix, feat, breaking).
+  # releasable_types:
+  #   - fix
+  #   - feat
+  #   - breaking
+
 maven:
   # Path to pom.xml, relative to the repository root.
   # pom_path: "pom.xml"
@@ -59,6 +66,14 @@ gitlab:
   # Numeric project ID or "namespace/project" path.
   # Falls back to CI_PROJECT_ID, then CI_PROJECT_PATH environment variables.
   # project: ""
+
+github:
+  # GitHub personal access token with repo scope.
+  # Falls back to the GITHUB_TOKEN environment variable.
+  # token: ""
+
+  # Repository in "owner/repo" format.
+  # repo: ""
 `
 
 var (
@@ -69,9 +84,31 @@ var (
 // exitFn is a variable so tests can intercept os.Exit calls.
 var exitFn = os.Exit
 
+// releasePublisher is implemented by both glclient and ghclient.
+type releasePublisher interface {
+	CreateRelease(ctx context.Context, tagName, body string) error
+}
+
+// buildPublisher selects and returns the active release publisher based on config.
+// GitHub takes precedence over GitLab when both are configured.
+// Returns (nil, nil) when no provider is configured — caller should skip release creation.
+func buildPublisher(cfg config.Config) (releasePublisher, error) {
+	if cfg.GitHub.Token != "" && cfg.GitHub.Repo != "" {
+		return ghclient.New(cfg.GitHub.Token, cfg.GitHub.Repo), nil
+	}
+	if cfg.GitLab.URL != "" && cfg.GitLab.Project != "" {
+		if cfg.GitLab.Token == "" {
+			return nil, fmt.Errorf("GITLAB_TOKEN not set — required for release creation")
+		}
+		return glclient.New(cfg.GitLab.URL, cfg.GitLab.Token, cfg.GitLab.Project), nil
+	}
+	return nil, nil
+}
+
 func newRootCmd() *cobra.Command {
 	var (
 		init_           bool
+		verbose         bool
 		dryRun          bool
 		noPush          bool
 		noRelease       bool
@@ -85,6 +122,7 @@ func newRootCmd() *cobra.Command {
 		tagPrefixSet    bool
 		patternFlag     string
 		patternSet      bool
+		releaseEnvFile  string
 	)
 
 	root := &cobra.Command{
@@ -97,6 +135,7 @@ func newRootCmd() *cobra.Command {
 			patternSet = cmd.Flags().Changed("branch-pattern")
 			return run(options{
 				init:           init_,
+				verbose:        verbose,
 				repoPath:       repoPath,
 				branchOverride: branchOverride,
 				pomOverride:    pomOverride,
@@ -110,14 +149,16 @@ func newRootCmd() *cobra.Command {
 				noRelease:      noRelease,
 				noCommit:       noCommit,
 				tagOnly:        tagOnly,
+				releaseEnvFile: releaseEnvFile,
 			})
 		},
 	}
 
 	root.Flags().BoolVar(&init_, "init", false, "create a default .releaser.yml in the repository and exit")
+	root.Flags().BoolVar(&verbose, "verbose", false, "print configuration sources, commit list, and version decision")
 	root.Flags().BoolVar(&dryRun, "dry-run", false, "print next version without making changes")
-	root.Flags().BoolVar(&noPush, "no-push", false, "create commit and tag locally without pushing or creating a GitLab release")
+	root.Flags().BoolVar(&noPush, "no-push", false, "create commit and tag locally without pushing or creating a release")
-	root.Flags().BoolVar(&noRelease, "no-release", false, "push commit and tag but skip creating the GitLab release")
+	root.Flags().BoolVar(&noRelease, "no-release", false, "push commit and tag but skip creating the release")
 	root.Flags().BoolVar(&noCommit, "no-commit", false, "update files but do not commit, tag, or push")
 	root.Flags().BoolVar(&tagOnly, "tag-only", false, "tag HEAD without updating files (assumes version was already committed)")
 	root.Flags().StringVar(&branchOverride, "branch", "", "override branch name detection (required in detached HEAD)")
@@ -126,6 +167,7 @@ func newRootCmd() *cobra.Command {
 	root.Flags().StringVar(&changelogFile, "changelog-file", "CHANGELOG.md", "path to changelog file relative to repo root")
 	root.Flags().StringVar(&tagPrefixFlag, "tag-prefix", "", "override git.tag_prefix from config")
 	root.Flags().StringVar(&patternFlag, "branch-pattern", "", "override git.branch_pattern from config")
+	root.Flags().StringVar(&releaseEnvFile, "release-env-file", "release.env", "write NEXT_VERSION dotenv to this path (relative to repo root; empty to disable)")
 
 	return root
 }
@@ -142,6 +184,7 @@ func main() {
 
 type options struct {
 	init           bool
+	verbose        bool
 	repoPath       string
 	branchOverride string
 	pomOverride    string
@@ -155,6 +198,51 @@ type options struct {
 	noRelease      bool
 	noCommit       bool
 	tagOnly        bool
+	releaseEnvFile string
+}
+
+func printVerboseConfig(cfg config.Config, src config.Sources) {
+	logSection("configuration")
+	rows := []struct{ key, val string }{
+		{"git.tag_prefix", cfg.Git.TagPrefix},
+		{"git.branch_pattern", cfg.Git.BranchPattern},
+		{"git.commit_message", cfg.Git.CommitMessage},
+		{"git.author_name", cfg.Git.AuthorName},
+		{"git.author_email", cfg.Git.AuthorEmail},
+		{"git.releasable_types", func() string {
+			if len(cfg.Git.ReleasableTypes) == 0 {
+				return "(all)"
+			}
+			return strings.Join(cfg.Git.ReleasableTypes, ", ")
+		}()},
+		{"maven.pom_path", cfg.Maven.PomPath},
+		{"gitlab.url", cfg.GitLab.URL},
+		{"gitlab.token", func() string {
+			if cfg.GitLab.Token != "" {
+				return "(set)"
+			}
+			return "(not set)"
+		}()},
+		{"gitlab.project", cfg.GitLab.Project},
+		{"github.token", func() string {
+			if cfg.GitHub.Token != "" {
+				return "(set)"
+			}
+			return "(not set)"
+		}()},
+		{"github.repo", cfg.GitHub.Repo},
+	}
+	for _, r := range rows {
+		source := src[r.key]
+		if source == "" {
+			source = "default"
+		}
+		val := r.val
+		if val == "" {
+			val = paint(ansiDim, "(empty)")
+		}
+		fmt.Fprintf(os.Stderr, "  %-25s = %-45s %s\n", r.key, val, fmtSource(source))
+	}
 }
 
 func initConfig(absRepo string) error {
@@ -170,6 +258,8 @@ func initConfig(absRepo string) error {
 }
 
 func run(o options) error {
+	logHeader(version)
+
 	// --- Config ---
 	absRepo, err := filepath.Abs(o.repoPath)
 	if err != nil {
@@ -177,24 +267,34 @@ func run(o options) error {
 	}
 
 	if o.init {
+		if o.verbose {
+			logStep("creating .releaser.yml in %s", absRepo)
+		}
 		return initConfig(absRepo)
 	}
 
-	cfg, err := config.Load(absRepo)
+	cfg, src, err := config.LoadWithSources(absRepo)
 	if err != nil {
 		return err
 	}
-	cfg.ApplyEnv()
+	cfg.ApplyEnvWithSources(src)
 
 	// CLI flags take precedence over config file and env vars
 	if o.tagPrefixSet {
 		cfg.Git.TagPrefix = o.tagPrefixFlag
+		src["git.tag_prefix"] = "flag: --tag-prefix"
 	}
 	if o.pomOverride != "" {
 		cfg.Maven.PomPath = o.pomOverride
+		src["maven.pom_path"] = "flag: --pom"
 	}
 	if o.patternSet {
 		cfg.Git.BranchPattern = o.patternFlag
+		src["git.branch_pattern"] = "flag: --branch-pattern"
+	}
+
+	if o.verbose {
+		printVerboseConfig(cfg, src)
 	}
 
 	// --- Git ---
@@ -217,6 +317,13 @@ func run(o options) error {
 	}
 	info.TagPrefix = cfg.Git.TagPrefix
 
+	if o.verbose {
+		logSection("branch")
+		fmt.Fprintf(os.Stderr, "  %s → major=%d, minor=%d %s\n",
+			paint(ansiBold, branchName), info.Major, info.Minor,
+			paint(ansiDim, "(pinned by branch)"))
+	}
+
 	// --- Dirty check (before any changes) ---
 	// Skipped in --no-commit mode: the user intentionally has changes in flight.
 	if !o.dryRun && !o.noCommit {
@@ -238,17 +345,21 @@ func run(o options) error {
 	// --- Commit range ---
 	var messages []string
 	if lastTag == "" {
-		fmt.Fprintln(os.Stderr, "info: no previous tag found — scanning all commits")
 		messages, err = gitutil.AllCommits(repo)
 	} else {
-		fmt.Fprintf(os.Stderr, "info: last tag: %s\n", lastTag)
 		messages, err = gitutil.CommitsSince(repo, lastTag)
 	}
 	if err != nil {
 		return fmt.Errorf("read commits: %w", err)
 	}
 
-	fmt.Fprintf(os.Stderr, "info: %d commit(s) to analyze\n", len(messages))
+	if !o.verbose {
+		if lastTag == "" {
+			logStep("no previous tag — scanning all %d commit(s)", len(messages))
+		} else {
+			logStep("last tag: %s  (%d commit(s) to analyze)", lastTag, len(messages))
+		}
+	}
 
 	// --- Version calculation ---
 	types := make([]commits.Type, len(messages))
@@ -256,21 +367,75 @@ func run(o options) error {
 		types[i] = commits.Parse(msg)
 	}
 
-	nextVersion, ok := semver.Next(info.Major, info.Minor, currentPatch, types)
+	if o.verbose {
+		logSection(fmt.Sprintf("commits (%d)", len(messages)))
+		if lastTag != "" {
+			fmt.Fprintf(os.Stderr, "  since: %s  (patch=%d)\n", paint(ansiCyan, lastTag), currentPatch)
+		}
+		for i, msg := range messages {
+			first := strings.SplitN(strings.TrimSpace(msg), "\n", 2)[0]
+			if len(first) > 70 {
+				first = first[:67] + "..."
+			}
+			t := types[i]
+			typeLabel := fmt.Sprintf("%-9s", t.String())
+			if t == commits.TypeNone {
+				fmt.Fprintf(os.Stderr, "  %s\n", paint(ansiDim, typeLabel+first))
+			} else {
+				var col string
+				switch t {
+				case commits.TypeBreaking:
+					col = ansiRed + ansiBold
+				case commits.TypeFeat:
+					col = ansiCyan
+				default: // fix
+					col = ansiGreen
+				}
+				fmt.Fprintf(os.Stderr, "  %s %s  %s\n",
+					paint(col, typeLabel), first, paint(ansiDim, "→ patch bump"))
+			}
+		}
+	}
+
+	releasable := commits.ReleasableSet(cfg.Git.ReleasableTypes)
+	nextVersion, ok := semver.Next(info.Major, info.Minor, currentPatch, types, releasable)
 	if !ok {
-		fmt.Fprintln(os.Stderr, "info: no releasable commits found")
+		logWarn("no releasable commits found")
 		return errNothingToRelease
 	}
 
 	nextTag := info.TagName(nextVersion)
 
+	if o.verbose {
+		highestType := commits.TypeNone
+		for _, t := range types {
+			if t > highestType {
+				highestType = t
+			}
+		}
+		logSection("version")
+		fmt.Fprintf(os.Stderr, "  highest type: %s  →  next: %s  (tag: %s)\n",
+			paint(ansiCyan, highestType.String()),
+			paint(ansiBold, nextVersion),
+			paint(ansiBold+ansiCyan, nextTag))
+	}
+
 	fmt.Printf("next version: %s (tag: %s)\n", nextVersion, nextTag)
 
 	if o.dryRun {
-		fmt.Fprintln(os.Stderr, "dry-run: no changes made")
+		logStep("dry-run: no changes made")
 		return nil
 	}
 
+	// --- release.env (GitLab CI dotenv artifact) ---
+	if o.releaseEnvFile != "" {
+		releaseEnvPath := filepath.Join(absRepo, o.releaseEnvFile)
+		if err := os.WriteFile(releaseEnvPath, []byte("NEXT_VERSION="+nextTag+"\n"), 0644); err != nil {
+			return fmt.Errorf("write %s: %w", o.releaseEnvFile, err)
+		}
+		logDone("%s: NEXT_VERSION=%s", o.releaseEnvFile, nextTag)
+	}
+
 	// --- pom.xml + CHANGELOG.md (skipped with --tag-only) ---
 	if !o.tagOnly {
 		var filesToCommit []string
@@ -287,13 +452,13 @@ func run(o options) error {
 			if err != nil {
 				return fmt.Errorf("read pom version: %w", err)
 			}
-			fmt.Fprintf(os.Stderr, "info: pom.xml: %s → %s\n", currentPomVersion, nextVersion)
 			if err := maven.WriteVersion(pomPath, currentPomVersion, nextVersion); err != nil {
 				return fmt.Errorf("update pom version: %w", err)
 			}
+			logDone("pom.xml: %s → %s", currentPomVersion, nextVersion)
 			filesToCommit = append(filesToCommit, cfg.Maven.PomPath)
 		} else {
-			fmt.Fprintln(os.Stderr, "info: no pom.xml found — skipping version bump")
+			logWarn("no pom.xml — skipping version bump")
 		}
 
 		// CHANGELOG.md
@@ -301,7 +466,7 @@ func run(o options) error {
 		if err := changelog.Update(changelogAbsPath, nextTag, nextVersion, messages); err != nil {
 			return fmt.Errorf("update changelog: %w", err)
 		}
-		fmt.Fprintf(os.Stderr, "info: %s updated\n", o.changelogFile)
+		logDone("%s updated", o.changelogFile)
 		filesToCommit = append(filesToCommit, o.changelogFile)
 
 		if o.noCommit {
@@ -321,14 +486,14 @@ func run(o options) error {
 		if _, err := gitutil.CommitFiles(repo, filesToCommit, commitMsg, authorName, authorEmail); err != nil {
 			return fmt.Errorf("commit: %w", err)
 		}
-		fmt.Fprintf(os.Stderr, "info: committed: %s\n", commitMsg)
+		logDone("committed: %s", commitMsg)
 	}
 
 	// --- Git tag ---
 	if err := gitutil.CreateTag(repo, nextTag); err != nil {
 		return fmt.Errorf("create tag: %w", err)
 	}
-	fmt.Fprintf(os.Stderr, "info: tag created: %s\n", nextTag)
+	logDone("tag: %s", nextTag)
 
 	if o.noPush {
 		fmt.Printf("released %s locally — push manually with: git push && git push --tags\n", nextTag)
@@ -336,34 +501,33 @@ func run(o options) error {
 	}
 
 	// --- Push ---
-	fmt.Fprintln(os.Stderr, "info: pushing commit and tag...")
+	logStep("pushing commit and tag...")
 	if err := gitutil.Push(repo, branchName, nextTag, cfg.GitLab.Token); err != nil {
 		return fmt.Errorf("push: %w", err)
 	}
-	fmt.Fprintln(os.Stderr, "info: pushed")
+	logDone("pushed")
 
-	// --- GitLab release ---
 	if o.noRelease {
 		fmt.Printf("released %s\n", nextTag)
 		return nil
 	}
-	if cfg.GitLab.URL == "" || cfg.GitLab.Project == "" {
+
-		fmt.Fprintln(os.Stderr, "warning: GitLab URL or project not configured — skipping release creation")
+	// --- Release creation ---
+	publisher, err := buildPublisher(cfg)
+	if err != nil {
+		return err
+	}
+	if publisher == nil {
+		logWarn("no release provider configured — skipping release creation")
 		fmt.Printf("released %s\n", nextTag)
 		return nil
 	}
-	if cfg.GitLab.Token == "" {
-		return fmt.Errorf("GITLAB_TOKEN not set — required for release creation")
-	}
 
 	releaseNotes := notes.Generate(nextTag, messages)
-	gl := glclient.New(cfg.GitLab.URL, cfg.GitLab.Token, cfg.GitLab.Project)
+	if err := publisher.CreateRelease(context.Background(), nextTag, releaseNotes); err != nil {
-
+		return fmt.Errorf("create release: %w", err)
-	if err := gl.CreateRelease(context.Background(), nextTag, releaseNotes); err != nil {
-		return fmt.Errorf("create GitLab release: %w", err)
 	}
-
+	logDone("release created: %s", nextTag)
-	fmt.Fprintf(os.Stderr, "info: GitLab release created: %s\n", nextTag)
 	fmt.Printf("released %s\n", nextTag)
 	return nil
 }

cmd/main_test.go

@@ -2,6 +2,7 @@ package main
 
 import (
 	"errors"
+	"io"
 	"net/http"
 	"net/http/httptest"
 	"os"
@@ -227,9 +228,9 @@ func TestRunMissingPom(t *testing.T) {
 
 	// Tag must still have been created.
 	repo2, _ := gogit.PlainOpen(dir)
-	_, err = repo2.Tag("v1.2.0")
+	_, err = repo2.Tag("1.2.0")
 	if err != nil {
-		t.Error("expected tag v1.2.0 to be created")
+		t.Error("expected tag 1.2.0 to be created")
 	}
 }
 
@@ -249,9 +250,9 @@ func TestRunNoPomAtDefaultPath(t *testing.T) {
 	}
 
 	repo2, _ := gogit.PlainOpen(dir)
-	_, err = repo2.Tag("v2.0.0")
+	_, err = repo2.Tag("2.0.0")
 	if err != nil {
-		t.Error("expected tag v2.0.0 to be created")
+		t.Error("expected tag 2.0.0 to be created")
 	}
 }
 
@@ -365,12 +366,12 @@ func TestRunDuplicateTag(t *testing.T) {
 	w.Add("x.go")
 	w.Commit("fix: patch something", &gogit.CommitOptions{Author: testSig()})
 
-	// Pre-create a v1.2.0 ref pointing to a garbage hash.
+	// Pre-create a 1.2.0 ref pointing to a garbage hash.
 	// LatestTag skips it (resolveTagToCommit fails for garbage hash),
-	// so run() calculates "v1.2.0" as the first-ever version — then
+	// so run() calculates "1.2.0" as the first-ever version — then
-	// CreateTag("v1.2.0") fails because the ref already exists.
+	// CreateTag("1.2.0") fails because the ref already exists.
 	fakeRef := plumbing.NewHashReference(
-		plumbing.NewTagReferenceName("v1.2.0"),
+		plumbing.NewTagReferenceName("1.2.0"),
 		plumbing.NewHash("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"),
 	)
 	if err := repo.Storer.SetReference(fakeRef); err != nil {
@@ -379,7 +380,7 @@ func TestRunDuplicateTag(t *testing.T) {
 
 	err := execCmd(t, "--tag-only", "--no-push", "--branch", "release/1.2", "--repo", dir)
 	if err == nil {
-		t.Fatal("expected error: v1.2.0 ref already exists")
+		t.Fatal("expected error: 1.2.0 ref already exists")
 	}
 }
 
@@ -430,9 +431,9 @@ func TestRunGitLabError(t *testing.T) {
 func TestRunWithPreviousTag(t *testing.T) {
 	repo, dir := setupRepo(t)
 
-	// Tag the initial commit as v1.2.0 (simulates a prior release)
+	// Tag the initial commit as 1.2.0 (simulates a prior release)
 	initialHead, _ := repo.Head()
-	repo.CreateTag("v1.2.0", initialHead.Hash(), nil)
+	repo.CreateTag("1.2.0", initialHead.Hash(), nil)
 
 	// Fix commit after the tag — run() will use CommitsSince, not AllCommits
 	addFile(t, dir, "x.go", "// fix")
@@ -656,3 +657,88 @@ func TestRunChangelogFile(t *testing.T) {
 		t.Error("expected CHANGES.md to be created")
 	}
 }
+
+func TestRunReleaseEnv(t *testing.T) {
+	_, dir := setupRepo(t)
+	addFile(t, dir, "x.go", "// fix")
+	repo, _ := gogit.PlainOpen(dir)
+	w, _ := repo.Worktree()
+	w.Add("x.go")
+	w.Commit("fix: something", &gogit.CommitOptions{Author: testSig()})
+
+	err := execCmd(t, "--no-push", "--branch", "release/1.2", "--repo", dir)
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+
+	data, err := os.ReadFile(filepath.Join(dir, "release.env"))
+	if err != nil {
+		t.Fatal("expected release.env to be created")
+	}
+	content := strings.TrimSpace(string(data))
+	if content != "NEXT_VERSION=1.2.0" {
+		t.Errorf("release.env content = %q, want %q", content, "NEXT_VERSION=1.2.0")
+	}
+}
+
+func TestRunReleaseEnvDryRun(t *testing.T) {
+	_, dir := setupRepo(t)
+	addFile(t, dir, "x.go", "// fix")
+	repo, _ := gogit.PlainOpen(dir)
+	w, _ := repo.Worktree()
+	w.Add("x.go")
+	w.Commit("fix: something", &gogit.CommitOptions{Author: testSig()})
+
+	err := execCmd(t, "--dry-run", "--branch", "release/1.2", "--repo", dir)
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+
+	if _, err := os.Stat(filepath.Join(dir, "release.env")); err == nil {
+		t.Error("release.env must not be created in --dry-run mode")
+	}
+}
+
+func TestRunVerbose(t *testing.T) {
+	_, dir := setupRepo(t)
+	addFile(t, dir, "x.go", "// feat")
+	repo, _ := gogit.PlainOpen(dir)
+	w, _ := repo.Worktree()
+	w.Add("x.go")
+	w.Commit("feat: add new thing", &gogit.CommitOptions{Author: testSig()})
+
+	// Capture stderr output by redirecting it temporarily.
+	old := os.Stderr
+	r, wPipe, _ := os.Pipe()
+	os.Stderr = wPipe
+
+	err := execCmd(t, "--dry-run", "--verbose", "--branch", "release/1.2", "--repo", dir)
+
+	wPipe.Close()
+	os.Stderr = old
+
+	rawBytes, _ := io.ReadAll(r)
+	output := string(rawBytes)
+
+	if err != nil {
+		t.Fatalf("--verbose: unexpected error: %v", err)
+	}
+
+	checks := []string{
+		"▸ configuration",
+		"git.tag_prefix",
+		"[default]",
+		"▸ branch",
+		"release/1.2",
+		"major=1, minor=2",
+		"▸ commits",
+		"feat: add new thing",
+		"patch bump",
+		"▸ version",
+	}
+	for _, want := range checks {
+		if !strings.Contains(output, want) {
+			t.Errorf("--verbose output missing %q\nfull output:\n%s", want, output)
+		}
+	}
+}

cmd/ui.go

@@ -0,0 +1,76 @@
+package main
+
+import (
+	"fmt"
+	"os"
+	"strings"
+)
+
+const (
+	ansiReset  = "\033[0m"
+	ansiBold   = "\033[1m"
+	ansiDim    = "\033[2m"
+	ansiRed    = "\033[31m"
+	ansiGreen  = "\033[32m"
+	ansiYellow = "\033[33m"
+	ansiCyan   = "\033[36m"
+)
+
+var useColor bool
+
+func init() {
+	fi, err := os.Stderr.Stat()
+	tty := err == nil && (fi.Mode()&os.ModeCharDevice) != 0
+	useColor = tty && os.Getenv("NO_COLOR") == "" && os.Getenv("TERM") != "dumb"
+}
+
+func paint(code, s string) string {
+	if !useColor {
+		return s
+	}
+	return code + s + ansiReset
+}
+
+// logStep writes a neutral progress line to stderr.
+func logStep(format string, args ...any) {
+	msg := fmt.Sprintf(format, args...)
+	fmt.Fprintf(os.Stderr, "  %s %s\n", paint(ansiDim, "·"), msg)
+}
+
+// logDone writes a success completion line to stderr.
+func logDone(format string, args ...any) {
+	msg := fmt.Sprintf(format, args...)
+	fmt.Fprintf(os.Stderr, "  %s %s\n", paint(ansiGreen+ansiBold, "✓"), msg)
+}
+
+// logWarn writes a warning line to stderr.
+func logWarn(format string, args ...any) {
+	msg := fmt.Sprintf(format, args...)
+	fmt.Fprintf(os.Stderr, "  %s %s\n", paint(ansiYellow, "!"), msg)
+}
+
+// logHeader prints the tool name and version banner to stderr.
+func logHeader(ver string) {
+	fmt.Fprintf(os.Stderr, "%s  %s\n",
+		paint(ansiBold, "releaser"),
+		paint(ansiDim, "v"+ver))
+}
+
+// logSection writes a bold section header to stderr (used in verbose mode).
+func logSection(title string) {
+	fmt.Fprintf(os.Stderr, "\n%s\n", paint(ansiBold, "▸ "+title))
+}
+
+// fmtSource returns a colored "[source]" tag for a config key source.
+func fmtSource(src string) string {
+	switch {
+	case strings.HasPrefix(src, "env:"):
+		return paint(ansiCyan, "["+src+"]")
+	case strings.HasPrefix(src, "flag:"):
+		return paint(ansiGreen, "["+src+"]")
+	case src == "default":
+		return paint(ansiDim, "[default]")
+	default: // "config file"
+		return paint(ansiBold, "["+src+"]")
+	}
+}

internal/changelog/changelog.go

@@ -4,19 +4,17 @@ import (
 	"errors"
 	"fmt"
 	"os"
-	"regexp"
 	"strings"
 	"time"
 
 	"git.k3nny.fr/releaser/internal/commits"
 )
 
-var headerSubjectRe = regexp.MustCompile(`(?i)^\w+(?:\([^)]*\))?!?\s*:\s*(.+)`)
-
 // Update inserts a new release section into the CHANGELOG file at path.
 // If the file does not exist it is created with a standard header.
 // Only commits with a releasable type (fix, feat, breaking) produce bullets;
 // if none are found the file is left untouched.
+// If a section for version already exists the file is left untouched (idempotent).
 func Update(path, tag, version string, messages []string) error {
 	section := buildSection(version, messages)
 	if section == "" {
@@ -31,6 +29,10 @@ func Update(path, tag, version string, messages []string) error {
 		return fmt.Errorf("read %s: %w", path, err)
 	}
 
+	if strings.Contains(existing, "## ["+version+"]") {
+		return nil
+	}
+
 	var out string
 	if existing == "" {
 		out = "# Changelog\n\nAll notable changes to this project will be documented in this file.\n\n" +
@@ -48,26 +50,7 @@ func Update(path, tag, version string, messages []string) error {
 }
 
 func buildSection(version string, messages []string) string {
-	var breaking, feats, fixes []string
+	breaking, feats, fixes := commits.Group(messages)
-
-	for _, msg := range messages {
-		t := commits.Parse(msg)
-		if t == commits.TypeNone {
-			continue
-		}
-		first := strings.SplitN(strings.TrimSpace(msg), "\n", 2)[0]
-		subject := extractSubject(first)
-
-		switch t {
-		case commits.TypeBreaking:
-			breaking = append(breaking, subject)
-		case commits.TypeFeat:
-			feats = append(feats, subject)
-		case commits.TypeFix:
-			fixes = append(fixes, subject)
-		}
-	}
-
 	if len(breaking)+len(feats)+len(fixes) == 0 {
 		return ""
 	}
@@ -91,11 +74,3 @@ func writeSection(sb *strings.Builder, title string, items []string) {
 		fmt.Fprintf(sb, "- %s\n", item)
 	}
 }
-
-func extractSubject(header string) string {
-	m := headerSubjectRe.FindStringSubmatch(header)
-	if m != nil {
-		return strings.TrimSpace(m[1])
-	}
-	return strings.TrimSpace(header)
-}

internal/commits/commits.go

@@ -5,6 +5,62 @@ import (
 	"strings"
 )
 
+// headerSubjectRe captures the subject (description) from a conventional commit header.
+var headerSubjectRe = regexp.MustCompile(`(?i)^\w+(?:\([^)]*\))?!?\s*:\s*(.+)`)
+
+// ExtractSubject returns the description part of a conventional commit header.
+// Falls back to the trimmed raw header if the pattern does not match.
+func ExtractSubject(header string) string {
+	m := headerSubjectRe.FindStringSubmatch(header)
+	if m != nil {
+		return strings.TrimSpace(m[1])
+	}
+	return strings.TrimSpace(header)
+}
+
+// Group splits messages into breaking changes, features, and fixes.
+// Only the first line of each message is considered; the subject is extracted.
+// Messages with TypeNone are silently dropped.
+func Group(messages []string) (breaking, feats, fixes []string) {
+	for _, msg := range messages {
+		t := Parse(msg)
+		if t == TypeNone {
+			continue
+		}
+		first := strings.SplitN(strings.TrimSpace(msg), "\n", 2)[0]
+		subject := ExtractSubject(first)
+		switch t {
+		case TypeBreaking:
+			breaking = append(breaking, subject)
+		case TypeFeat:
+			feats = append(feats, subject)
+		case TypeFix:
+			fixes = append(fixes, subject)
+		}
+	}
+	return
+}
+
+// ReleasableSet converts a slice of type-name strings to a set for use in version.Next.
+// An empty or nil slice defaults to all three releasable types (fix, feat, breaking).
+func ReleasableSet(typeNames []string) map[Type]bool {
+	if len(typeNames) == 0 {
+		return map[Type]bool{TypeFix: true, TypeFeat: true, TypeBreaking: true}
+	}
+	m := make(map[Type]bool, len(typeNames))
+	for _, name := range typeNames {
+		switch strings.ToLower(name) {
+		case "fix":
+			m[TypeFix] = true
+		case "feat":
+			m[TypeFeat] = true
+		case "breaking":
+			m[TypeBreaking] = true
+		}
+	}
+	return m
+}
+
 // Type represents the semantic weight of a commit for versioning purposes.
 type Type int
 

internal/commits/commits_test.go

@@ -35,6 +35,56 @@ func FuzzParse(f *testing.F) {
 	})
 }
 
+func TestExtractSubject(t *testing.T) {
+	cases := []struct {
+		header string
+		want   string
+	}{
+		{"feat: add login", "add login"},
+		{"feat(auth): add OAuth2", "add OAuth2"},
+		{"feat!: remove API", "remove API"},
+		{"FIX:typo", "typo"},
+		{"plain message", "plain message"},
+	}
+	for _, c := range cases {
+		got := ExtractSubject(c.header)
+		if got != c.want {
+			t.Errorf("ExtractSubject(%q) = %q, want %q", c.header, got, c.want)
+		}
+	}
+}
+
+func TestGroup(t *testing.T) {
+	messages := []string{
+		"feat: add login",
+		"fix: patch null pointer",
+		"feat!: remove legacy API",
+		"chore: update deps",
+		"fix: handle empty response",
+	}
+	breaking, feats, fixes := Group(messages)
+	if len(breaking) != 1 || breaking[0] != "remove legacy API" {
+		t.Errorf("breaking = %v, want [remove legacy API]", breaking)
+	}
+	if len(feats) != 1 || feats[0] != "add login" {
+		t.Errorf("feats = %v, want [add login]", feats)
+	}
+	if len(fixes) != 2 {
+		t.Errorf("fixes = %v, want 2 items", fixes)
+	}
+}
+
+func TestReleasableSet(t *testing.T) {
+	all := ReleasableSet(nil)
+	if !all[TypeFix] || !all[TypeFeat] || !all[TypeBreaking] {
+		t.Error("nil input should return all three types")
+	}
+	only := ReleasableSet([]string{"fix"})
+	if !only[TypeFix] || only[TypeFeat] || only[TypeBreaking] {
+		t.Errorf("fix-only set: %v", only)
+	}
+}
+
 func TestTypeString(t *testing.T) {
 	cases := []struct {
 		t    Type

internal/config/config.go

@@ -17,6 +17,7 @@ type Config struct {
 	Git    GitConfig    `yaml:"git"`
 	Maven  MavenConfig  `yaml:"maven"`
 	GitLab GitLabConfig `yaml:"gitlab"`
+	GitHub GitHubConfig `yaml:"github"`
 }
 
 type GitConfig struct {
@@ -25,6 +26,7 @@ type GitConfig struct {
 	CommitMessage   string   `yaml:"commit_message"`
 	AuthorName      string   `yaml:"author_name"`
 	AuthorEmail     string   `yaml:"author_email"`
+	ReleasableTypes []string `yaml:"releasable_types"`
 }
 
 type MavenConfig struct {
@@ -37,10 +39,15 @@ type GitLabConfig struct {
 	Project string `yaml:"project"`
 }
 
+type GitHubConfig struct {
+	Token string `yaml:"token"`
+	Repo  string `yaml:"repo"` // "owner/repo"
+}
+
 func defaults() Config {
 	return Config{
 		Git: GitConfig{
-			TagPrefix:     "v",
+			TagPrefix:     "",
 			BranchPattern: branch.DefaultBranchPattern,
 			CommitMessage: "chore(release): {version} [skip ci]",
 		},
@@ -50,42 +57,141 @@ func defaults() Config {
 	}
 }
 
+// Sources records where each config value came from.
+// Keys are "section.field" (e.g. "git.tag_prefix").
+// Values are one of: "default", "config file", "env: VARNAME", "flag: --flag-name".
+type Sources map[string]string
+
+func defaultSources() Sources {
+	return Sources{
+		"git.tag_prefix":       "default",
+		"git.branch_pattern":   "default",
+		"git.commit_message":   "default",
+		"git.author_name":      "default",
+		"git.author_email":     "default",
+		"git.releasable_types": "default",
+		"maven.pom_path":       "default",
+		"gitlab.url":           "default",
+		"gitlab.token":         "default",
+		"gitlab.project":       "default",
+		"github.token":         "default",
+		"github.repo":          "default",
+	}
+}
+
 // Load reads .releaser.yml from dir and merges it over the defaults.
 // Missing file is not an error — defaults are returned as-is.
 func Load(dir string) (Config, error) {
+	cfg, _, err := LoadWithSources(dir)
+	return cfg, err
+}
+
+// LoadWithSources is like Load but also returns a Sources map recording where each
+// value came from ("default" or "config file").
+func LoadWithSources(dir string) (Config, Sources, error) {
 	cfg := defaults()
+	src := defaultSources()
 
 	data, err := os.ReadFile(filepath.Join(dir, filename))
 	if errors.Is(err, os.ErrNotExist) {
-		return cfg, nil
+		return cfg, src, nil
 	}
 	if err != nil {
-		return cfg, fmt.Errorf("read %s: %w", filename, err)
+		return cfg, src, fmt.Errorf("read %s: %w", filename, err)
 	}
 
+	// Unmarshal into cfg (merges over defaults).
 	if err := yaml.Unmarshal(data, &cfg); err != nil {
-		return cfg, fmt.Errorf("parse %s: %w", filename, err)
+		return cfg, src, fmt.Errorf("parse %s: %w", filename, err)
 	}
 
-	return cfg, nil
+	// Detect which fields the file explicitly set by unmarshaling into a zero overlay.
+	var overlay Config
+	_ = yaml.Unmarshal(data, &overlay)
+	if overlay.Git.TagPrefix != "" {
+		src["git.tag_prefix"] = "config file"
+	}
+	if overlay.Git.BranchPattern != "" {
+		src["git.branch_pattern"] = "config file"
+	}
+	if overlay.Git.CommitMessage != "" {
+		src["git.commit_message"] = "config file"
+	}
+	if overlay.Git.AuthorName != "" {
+		src["git.author_name"] = "config file"
+	}
+	if overlay.Git.AuthorEmail != "" {
+		src["git.author_email"] = "config file"
+	}
+	if len(overlay.Git.ReleasableTypes) > 0 {
+		src["git.releasable_types"] = "config file"
+	}
+	if overlay.Maven.PomPath != "" {
+		src["maven.pom_path"] = "config file"
+	}
+	if overlay.GitLab.URL != "" {
+		src["gitlab.url"] = "config file"
+	}
+	if overlay.GitLab.Token != "" {
+		src["gitlab.token"] = "config file"
+	}
+	if overlay.GitLab.Project != "" {
+		src["gitlab.project"] = "config file"
+	}
+	if overlay.GitHub.Token != "" {
+		src["github.token"] = "config file"
+	}
+	if overlay.GitHub.Repo != "" {
+		src["github.repo"] = "config file"
 	}
 
-// ApplyEnv fills empty GitLab fields from the standard GitLab CI environment variables.
+	return cfg, src, nil
+}
+
+// ApplyEnv fills empty GitLab and GitHub fields from environment variables.
 // Values already set in the config file are never overwritten.
 func (c *Config) ApplyEnv() {
+	c.ApplyEnvWithSources(nil)
+}
+
+// ApplyEnvWithSources is like ApplyEnv but records the env var name in src for each
+// field it fills. src may be nil.
+func (c *Config) ApplyEnvWithSources(src Sources) {
 	if c.GitLab.Token == "" {
-		c.GitLab.Token = os.Getenv("GITLAB_TOKEN")
+		if v := os.Getenv("GITLAB_TOKEN"); v != "" {
+			c.GitLab.Token = v
+			if src != nil {
+				src["gitlab.token"] = "env: GITLAB_TOKEN"
+			}
+		}
 	}
 	if c.GitLab.URL == "" {
-		// CI_SERVER_URL is the cleanest source ("https://gitlab.example.com")
+		if v := os.Getenv("CI_SERVER_URL"); v != "" {
-		c.GitLab.URL = os.Getenv("CI_SERVER_URL")
+			c.GitLab.URL = v
+			if src != nil {
+				src["gitlab.url"] = "env: CI_SERVER_URL"
+			}
+		}
 	}
 	if c.GitLab.Project == "" {
-		// Prefer numeric ID; fall back to namespace/project path
 		if id := os.Getenv("CI_PROJECT_ID"); id != "" {
 			c.GitLab.Project = id
-		} else {
+			if src != nil {
-			c.GitLab.Project = os.Getenv("CI_PROJECT_PATH")
+				src["gitlab.project"] = "env: CI_PROJECT_ID"
+			}
+		} else if p := os.Getenv("CI_PROJECT_PATH"); p != "" {
+			c.GitLab.Project = p
+			if src != nil {
+				src["gitlab.project"] = "env: CI_PROJECT_PATH"
+			}
+		}
+	}
+	if c.GitHub.Token == "" {
+		if v := os.Getenv("GITHUB_TOKEN"); v != "" {
+			c.GitHub.Token = v
+			if src != nil {
+				src["github.token"] = "env: GITHUB_TOKEN"
+			}
 		}
 	}
 }

internal/config/config_test.go

@@ -11,8 +11,8 @@ func TestLoadDefaults(t *testing.T) {
 	if err != nil {
 		t.Fatal(err)
 	}
-	if cfg.Git.TagPrefix != "v" {
+	if cfg.Git.TagPrefix != "" {
-		t.Errorf("TagPrefix = %q, want %q", cfg.Git.TagPrefix, "v")
+		t.Errorf("TagPrefix = %q, want %q", cfg.Git.TagPrefix, "")
 	}
 	if cfg.Maven.PomPath != "pom.xml" {
 		t.Errorf("PomPath = %q, want %q", cfg.Maven.PomPath, "pom.xml")

internal/ghclient/ghclient.go

@@ -0,0 +1,73 @@
+package ghclient
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"time"
+)
+
+// Client is a minimal GitHub API client covering only the Releases endpoint.
+type Client struct {
+	token      string
+	repo       string // "owner/repo"
+	httpClient *http.Client
+}
+
+// New creates a Client. repo must be in "owner/repo" format.
+func New(token, repo string) *Client {
+	return &Client{
+		token: token,
+		repo:  repo,
+		httpClient: &http.Client{
+			Timeout: 30 * time.Second,
+		},
+	}
+}
+
+type createReleaseRequest struct {
+	TagName string `json:"tag_name"`
+	Name    string `json:"name"`
+	Body    string `json:"body"`
+}
+
+// CreateRelease creates a GitHub release on an existing tag.
+// The tag must already be pushed to the remote before calling this.
+func (c *Client) CreateRelease(ctx context.Context, tagName, body string) error {
+	payload, _ := json.Marshal(createReleaseRequest{
+		TagName: tagName,
+		Name:    tagName,
+		Body:    body,
+	})
+
+	url := fmt.Sprintf("https://api.github.com/repos/%s/releases", c.repo)
+	req, err := http.NewRequestWithContext(ctx, http.MethodPost, url, bytes.NewReader(payload))
+	if err != nil {
+		return err
+	}
+	req.Header.Set("Content-Type", "application/json")
+	req.Header.Set("Authorization", "Bearer "+c.token)
+	req.Header.Set("Accept", "application/vnd.github+json")
+	req.Header.Set("X-GitHub-Api-Version", "2022-11-28")
+
+	resp, err := c.httpClient.Do(req)
+	if err != nil {
+		return fmt.Errorf("GitHub API request failed: %w", err)
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode < 200 || resp.StatusCode >= 300 {
+		var errBody struct {
+			Message string `json:"message"`
+		}
+		json.NewDecoder(resp.Body).Decode(&errBody) //nolint:errcheck
+		if errBody.Message != "" {
+			return fmt.Errorf("GitHub API returned %d: %s", resp.StatusCode, errBody.Message)
+		}
+		return fmt.Errorf("GitHub API returned %d", resp.StatusCode)
+	}
+
+	return nil
+}

internal/gitutil/gitutil.go

@@ -6,14 +6,16 @@ import (
 	"os"
 	"os/exec"
 	"sort"
+	"strings"
 	"time"
 
 	gogit "github.com/go-git/go-git/v5"
 	gitconfig "github.com/go-git/go-git/v5/config"
 	"github.com/go-git/go-git/v5/plumbing"
 	"github.com/go-git/go-git/v5/plumbing/object"
-	githttp "github.com/go-git/go-git/v5/plumbing/transport/http"
 	"github.com/go-git/go-git/v5/plumbing/storer"
+	githttp "github.com/go-git/go-git/v5/plumbing/transport/http"
+	gitssh "github.com/go-git/go-git/v5/plumbing/transport/ssh"
 
 	"git.k3nny.fr/releaser/internal/branch"
 )
@@ -241,15 +243,53 @@ func CreateTag(repo *gogit.Repository, tagName string) error {
 
 // Push pushes the given branch and tag to the "origin" remote.
 // When token is non-empty, go-git is used with HTTPS basic auth (oauth2/token) — suitable for CI.
-// When token is empty, the system git binary is invoked so that credential helpers,
+// When token is empty and the remote URL is SSH, go-git SSH agent auth is attempted first.
-// SSH agents, and netrc are all available as they would be for a regular git push.
+// Falls back to the system git binary so that credential helpers, netrc, and SSH keys work normally.
 func Push(repo *gogit.Repository, branchName, tagName, token string) error {
 	if token != "" {
 		return pushWithGoGit(repo, branchName, tagName, token)
 	}
+	// Try SSH agent auth when the remote URL uses SSH transport.
+	if remote, err := repo.Remote("origin"); err == nil {
+		urls := remote.Config().URLs
+		if len(urls) > 0 && isSSHURL(urls[0]) {
+			if err := pushWithSSHAgent(repo, branchName, tagName); err == nil {
+				return nil
+			}
+		}
+	}
 	return pushWithCLI(repo, branchName, tagName)
 }
 
+func isSSHURL(u string) bool {
+	return strings.HasPrefix(u, "git@") || strings.HasPrefix(u, "ssh://")
+}
+
+func pushWithSSHAgent(repo *gogit.Repository, branchName, tagName string) error {
+	auth, err := gitssh.NewSSHAgentAuth("git")
+	if err != nil {
+		return err
+	}
+
+	remote, err := repo.Remote("origin")
+	if err != nil {
+		return fmt.Errorf("remote origin not found: %w", err)
+	}
+
+	opts := &gogit.PushOptions{
+		RefSpecs: []gitconfig.RefSpec{
+			gitconfig.RefSpec(fmt.Sprintf("refs/heads/%s:refs/heads/%s", branchName, branchName)),
+			gitconfig.RefSpec(fmt.Sprintf("refs/tags/%s:refs/tags/%s", tagName, tagName)),
+		},
+		Auth: auth,
+	}
+
+	if err := remote.Push(opts); err != nil && !errors.Is(err, gogit.NoErrAlreadyUpToDate) {
+		return fmt.Errorf("git push via SSH agent: %w", err)
+	}
+	return nil
+}
+
 func pushWithGoGit(repo *gogit.Repository, branchName, tagName, token string) error {
 	remote, err := repo.Remote("origin")
 	if err != nil {

internal/notes/notes.go

@@ -2,38 +2,16 @@ package notes
 
 import (
 	"fmt"
-	"regexp"
 	"strings"
 
 	"git.k3nny.fr/releaser/internal/commits"
 )
 
-// headerSubjectRe captures the subject (description) part of a conventional commit header.
-var headerSubjectRe = regexp.MustCompile(`(?i)^\w+(?:\([^)]*\))?!?\s*:\s*(.+)`)
-
 // Generate produces grouped markdown release notes from a list of commit messages.
 // Commits are grouped into Breaking Changes, Features, and Bug Fixes.
 // Commits with no releasable type are omitted.
 func Generate(tagName string, messages []string) string {
-	var breaking, feats, fixes []string
+	breaking, feats, fixes := commits.Group(messages)
-
-	for _, msg := range messages {
-		t := commits.Parse(msg)
-		if t == commits.TypeNone {
-			continue
-		}
-		first := strings.SplitN(strings.TrimSpace(msg), "\n", 2)[0]
-		subject := extractSubject(first)
-
-		switch t {
-		case commits.TypeBreaking:
-			breaking = append(breaking, subject)
-		case commits.TypeFeat:
-			feats = append(feats, subject)
-		case commits.TypeFix:
-			fixes = append(fixes, subject)
-		}
-	}
 
 	var sb strings.Builder
 	fmt.Fprintf(&sb, "## %s\n", tagName)
@@ -53,13 +31,3 @@ func writeSection(sb *strings.Builder, title string, items []string) {
 		fmt.Fprintf(sb, "- %s\n", item)
 	}
 }
-
-// extractSubject returns the description part of a conventional commit header.
-// Falls back to the raw header if the pattern does not match.
-func extractSubject(header string) string {
-	m := headerSubjectRe.FindStringSubmatch(header)
-	if m != nil {
-		return strings.TrimSpace(m[1])
-	}
-	return strings.TrimSpace(header)
-}

internal/notes/notes_test.go

@@ -69,25 +69,6 @@ func TestGenerateEmpty(t *testing.T) {
 	}
 }
 
-func TestExtractSubject(t *testing.T) {
-	cases := []struct {
-		header string
-		want   string
-	}{
-		{"feat: add login", "add login"},
-		{"feat(auth): add OAuth2", "add OAuth2"},
-		{"feat!: remove API", "remove API"},
-		{"FIX:typo", "typo"},
-		{"plain message", "plain message"},
-	}
-	for _, c := range cases {
-		got := extractSubject(c.header)
-		if got != c.want {
-			t.Errorf("extractSubject(%q) = %q, want %q", c.header, got, c.want)
-		}
-	}
-}
-
 // FuzzGenerate verifies that Generate never panics on arbitrary inputs and
 // always includes the tag name in the output.
 func FuzzGenerate(f *testing.F) {

internal/version/version.go

@@ -8,10 +8,14 @@ import (
 
 // Next computes the next version string (without tag prefix, e.g. "1.2.4").
 // currentPatch is -1 when no tag exists yet (first release will be X.Y.0).
+// releasable is the set of commit types that trigger a bump; nil defaults to all three.
 // Returns ("", false) when there are no releasable commits.
-func Next(major, minor, currentPatch int, types []commits.Type) (string, bool) {
+func Next(major, minor, currentPatch int, types []commits.Type, releasable map[commits.Type]bool) (string, bool) {
+	if releasable == nil {
+		releasable = commits.ReleasableSet(nil)
+	}
 	for _, t := range types {
-		if t != commits.TypeNone {
+		if releasable[t] {
 			return fmt.Sprintf("%d.%d.%d", major, minor, currentPatch+1), true
 		}
 	}

internal/version/version_test.go

@@ -61,7 +61,7 @@ func TestNext(t *testing.T) {
 
 	for _, c := range cases {
 		t.Run(c.desc, func(t *testing.T) {
-			got, ok := Next(c.major, c.minor, c.currentPatch, c.types)
+			got, ok := Next(c.major, c.minor, c.currentPatch, c.types, nil)
 			if ok != c.wantOk {
 				t.Errorf("ok=%v, want %v", ok, c.wantOk)
 			}