Add artifactapi_remote_github_deb resource

Add the metadata-only Debian/apt analog of artifactapi_remote_github_rpm,
exposing a GitHub repo's release .deb assets as a synthesized apt repository
with downloads redirected to a backing releases_remote.

- Register newRemoteResource("github_deb") and add NewRemoteGitHubDeb ctor
- Bump provider resource count 19 -> 20 and add the type name to test lists
- Add modelToAPI/metadata/constructor test coverage for github_deb
- Document github_deb in README and add an examples/ main.tf (goodtune/ghp)

internal/provider/provider.go

@@ -69,6 +69,7 @@ func (p *ArtifactAPIProvider) Resources(_ context.Context) []func() resource.Res
 		newRemoteResource("terraform"),
 		newRemoteResource("goproxy"),
 		newRemoteResource("github_rpm"),
+		newRemoteResource("github_deb"),
 		NewVirtualResource,
 		NewLocalTerraformResource,
 		NewLocalPyPIResource,

internal/provider/provider_test.go

@@ -66,8 +66,8 @@ func TestProvider_Resources(t *testing.T) {
 	p := &ArtifactAPIProvider{version: "1.0.0"}
 	resources := p.Resources(context.Background())
 
-	// 12 remote resource types + 1 virtual + local_terraform/pypi/rpm/deb/docker/generic = 19
-	expectedCount := 19
+	// 13 remote resource types + 1 virtual + local_terraform/pypi/rpm/deb/docker/generic = 20
+	expectedCount := 20
 	if len(resources) != expectedCount {
 		t.Fatalf("expected %d resources, got %d", expectedCount, len(resources))
 	}
@@ -108,6 +108,7 @@ func TestProvider_Resources_ContainsExpectedTypes(t *testing.T) {
 		"artifactapi_remote_terraform",
 		"artifactapi_remote_goproxy",
 		"artifactapi_remote_github_rpm",
+		"artifactapi_remote_github_deb",
 		"artifactapi_virtual",
 		"artifactapi_local_terraform",
 		"artifactapi_local_pypi",

internal/provider/resource_remote.go

@@ -68,6 +68,7 @@ func NewRemotePuppet() resource.Resource    { return &remoteResource{packageType
 func NewRemoteTerraform() resource.Resource { return &remoteResource{packageType: "terraform"} }
 func NewRemoteGoProxy() resource.Resource   { return &remoteResource{packageType: "goproxy"} }
 func NewRemoteGitHubRPM() resource.Resource { return &remoteResource{packageType: "github_rpm"} }
+func NewRemoteGitHubDeb() resource.Resource { return &remoteResource{packageType: "github_deb"} }
 
 func (r *remoteResource) Metadata(_ context.Context, req resource.MetadataRequest, resp *resource.MetadataResponse) {
 	resp.TypeName = req.ProviderTypeName + "_remote_" + r.packageType
@@ -147,7 +148,7 @@ func (r *remoteResource) Schema(_ context.Context, _ resource.SchemaRequest, res
 			ElementType: types.StringType,
 		},
 		"releases_remote": schema.StringAttribute{
-			Description: "Name of a backend remote that serves the actual download bytes. Used by the terraform remote (download URL rewriting) and the github_rpm remote (302 redirect of .rpm downloads to a generic github.com remote).",
+			Description: "Name of a backend remote that serves the actual download bytes. Used by the terraform remote (download URL rewriting) and the github_rpm/github_deb remotes (302 redirect of .rpm/.deb downloads to a generic github.com remote).",
 			Optional:    true, Computed: true, Default: stringdefault.StaticString(""),
 		},
 		"upstream_dial_timeout": schema.Int64Attribute{

internal/provider/resource_remote_test.go

@@ -410,6 +410,7 @@ func TestRemoteResource_Metadata(t *testing.T) {
 		{"pypi", "artifactapi_remote_pypi"},
 		{"npm", "artifactapi_remote_npm"},
 		{"github_rpm", "artifactapi_remote_github_rpm"},
+		{"github_deb", "artifactapi_remote_github_deb"},
 	}
 
 	for _, tt := range tests {
@@ -453,6 +454,34 @@ func TestModelToAPI_GitHubRPM(t *testing.T) {
 	}
 }
 
+func TestModelToAPI_GitHubDeb(t *testing.T) {
+	ctx := context.Background()
+	r := &remoteResource{packageType: "github_deb"}
+
+	model := remoteResourceModel{
+		Name:           types.StringValue("acme-tools"),
+		BaseURL:        types.StringValue("https://api.github.com/repos/acme/tools"),
+		ReleasesRemote: types.StringValue("github"),
+		MutableTTL:     types.Int64Value(3600),
+		Patterns:       stringsToList(ctx, []string{`.*_amd64\.deb$`}),
+	}
+
+	api := r.modelToAPI(ctx, model)
+
+	if api.PackageType != "github_deb" {
+		t.Errorf("PackageType: expected github_deb, got %s", api.PackageType)
+	}
+	if api.BaseURL != "https://api.github.com/repos/acme/tools" {
+		t.Errorf("BaseURL: got %s", api.BaseURL)
+	}
+	if api.ReleasesRemote != "github" {
+		t.Errorf("ReleasesRemote: expected github, got %s", api.ReleasesRemote)
+	}
+	if len(api.Patterns) != 1 || api.Patterns[0] != `.*_amd64\.deb$` {
+		t.Errorf("Patterns: got %v", api.Patterns)
+	}
+}
+
 func TestRemoteResource_Schema(t *testing.T) {
 	r := &remoteResource{packageType: "docker"}
 	req := resource.SchemaRequest{}
@@ -493,6 +522,7 @@ func TestNewRemoteResource_Constructors(t *testing.T) {
 		{"terraform", func() resource.Resource { return NewRemoteTerraform() }, "terraform"},
 		{"goproxy", func() resource.Resource { return NewRemoteGoProxy() }, "goproxy"},
 		{"github_rpm", func() resource.Resource { return NewRemoteGitHubRPM() }, "github_rpm"},
+		{"github_deb", func() resource.Resource { return NewRemoteGitHubDeb() }, "github_deb"},
 	}
 
 	for _, tt := range tests {