fix(writers): drop version stamps from generated output

Generated files carried the RelSpec version and build date, so every
rebuild produced a diff even when the schema was unchanged.

- bun, gorm, drizzle: remove the GeneratedBy template field and line
- pgsql, mssql, sqlite: emit a constant "-- Generated by RelSpec"
- bun: replace the version header test with a version-free assertion

pkg/buildinfo is unchanged and still backs the CLI version.

pkg/writers/bun/template_data.go

@@ -6,7 +6,6 @@ import (
 	"sort"
 	"strings"
 
-	"git.warky.dev/wdevs/relspecgo/pkg/buildinfo"
 	"git.warky.dev/wdevs/relspecgo/pkg/models"
 	"git.warky.dev/wdevs/relspecgo/pkg/writers"
 )
@@ -14,7 +13,6 @@ import (
 // TemplateData represents the data passed to the template for code generation
 type TemplateData struct {
 	PackageName string
-	GeneratedBy string
 	Imports     []string
 	Models      []*ModelData
 	Config      *MethodConfig
@@ -167,7 +165,6 @@ func NewTemplateData(packageName string, config *MethodConfig) *TemplateData {
 
 	return &TemplateData{
 		PackageName: packageName,
-		GeneratedBy: buildinfo.GeneratedComment(),
 		Imports:     make([]string, 0),
 		Models:      make([]*ModelData, 0),
 		Config:      config,

pkg/writers/bun/templates.go

@@ -7,8 +7,7 @@ import (
 
 // modelTemplate defines the template for generating Bun models
 const modelTemplate = `// Code generated by relspecgo. DO NOT EDIT.
-{{if .GeneratedBy}}// {{.GeneratedBy}}
+package {{.PackageName}}
-{{end}}package {{.PackageName}}
 
 {{if .Imports -}}
 import (

pkg/writers/bun/writer_test.go

@@ -8,7 +8,6 @@ import (
 	"strings"
 	"testing"
 
-	"git.warky.dev/wdevs/relspecgo/pkg/buildinfo"
 	"git.warky.dev/wdevs/relspecgo/pkg/models"
 	"git.warky.dev/wdevs/relspecgo/pkg/writers"
 )
@@ -121,7 +120,7 @@ func TestWriter_WriteTable_MultilineDescriptionProducesValidGo(t *testing.T) {
 	}
 }
 
-func TestWriter_WriteTable_EmbedsRelspecVersionHeader(t *testing.T) {
+func TestWriter_WriteTable_HeaderIsVersionFree(t *testing.T) {
 	table := models.InitTable("users", "public")
 	table.Columns["id"] = &models.Column{Name: "id", Type: "bigint", IsPrimaryKey: true, NotNull: true, Sequence: 1}
 
@@ -141,19 +140,14 @@ func TestWriter_WriteTable_EmbedsRelspecVersionHeader(t *testing.T) {
 		t.Fatalf("generated code is invalid Go: %v\n%s", err, src)
 	}
 
-	wantHeader := "// " + buildinfo.GeneratedComment()
+	// Output must be reproducible: no version or build date in the header.
-	if !strings.Contains(src, wantHeader) {
+	if strings.Contains(src, "(built: ") || strings.Contains(src, "RelSpec ") {
-		t.Errorf("generated code missing RelSpec version header %q\n%s", wantHeader, src)
+		t.Errorf("generated code still carries a version header\n%s", src)
 	}
-	// The provenance comment must sit between the "Code generated" marker and the package clause.
+	// The "Code generated" marker must sit directly above the package clause.
-	genIdx := strings.Index(src, "// Code generated by relspecgo. DO NOT EDIT.")
+	want := "// Code generated by relspecgo. DO NOT EDIT.\npackage models"
-	hdrIdx := strings.Index(src, wantHeader)
+	if !strings.Contains(src, want) {
-	pkgIdx := strings.Index(src, "package models")
+		t.Errorf("header not immediately followed by package clause\n%s", src)
-	if genIdx < 0 || hdrIdx < 0 || pkgIdx < 0 || !(genIdx < hdrIdx && hdrIdx < pkgIdx) {
-		t.Errorf("RelSpec version header is misplaced (gen=%d hdr=%d pkg=%d)\n%s", genIdx, hdrIdx, pkgIdx, src)
-	}
-	if !strings.Contains(wantHeader, "RelSpec ") || !strings.Contains(wantHeader, "(built: ") {
-		t.Errorf("version header not in expected 'RelSpec <version> (built: <date>)' form: %q", wantHeader)
 	}
 }
 

pkg/writers/drizzle/template_data.go

@@ -4,13 +4,11 @@ import (
 	"sort"
 	"strings"
 
-	"git.warky.dev/wdevs/relspecgo/pkg/buildinfo"
 	"git.warky.dev/wdevs/relspecgo/pkg/models"
 )
 
 // TemplateData represents the data passed to the template for code generation
 type TemplateData struct {
-	GeneratedBy string
 	Imports []string
 	Enums   []*EnumData
 	Tables  []*TableData
@@ -61,7 +59,6 @@ type IndexData struct {
 // NewTemplateData creates a new TemplateData
 func NewTemplateData() *TemplateData {
 	return &TemplateData{
-		GeneratedBy: buildinfo.GeneratedComment(),
 		Imports: make([]string, 0),
 		Enums:   make([]*EnumData, 0),
 		Tables:  make([]*TableData, 0),

pkg/writers/drizzle/templates.go

@@ -7,8 +7,7 @@ import (
 
 // schemaTemplate defines the template for generating Drizzle schemas
 const schemaTemplate = `// Code generated by relspecgo. DO NOT EDIT.
-{{if .GeneratedBy}}// {{.GeneratedBy}}
+{{range .Imports}}{{.}}
-{{end}}{{range .Imports}}{{.}}
 {{end}}
 {{if .Enums}}
 // Enums

pkg/writers/gorm/template_data.go

@@ -4,7 +4,6 @@ import (
 	"sort"
 	"strings"
 
-	"git.warky.dev/wdevs/relspecgo/pkg/buildinfo"
 	"git.warky.dev/wdevs/relspecgo/pkg/models"
 	"git.warky.dev/wdevs/relspecgo/pkg/writers"
 )
@@ -12,7 +11,6 @@ import (
 // TemplateData represents the data passed to the template for code generation
 type TemplateData struct {
 	PackageName string
-	GeneratedBy string
 	Imports     []string
 	Models      []*ModelData
 	Config      *MethodConfig
@@ -81,7 +79,6 @@ func NewTemplateData(packageName string, config *MethodConfig) *TemplateData {
 
 	return &TemplateData{
 		PackageName: packageName,
-		GeneratedBy: buildinfo.GeneratedComment(),
 		Imports:     make([]string, 0),
 		Models:      make([]*ModelData, 0),
 		Config:      config,

pkg/writers/gorm/templates.go

@@ -7,8 +7,7 @@ import (
 
 // modelTemplate defines the template for generating GORM models
 const modelTemplate = `// Code generated by relspecgo. DO NOT EDIT.
-{{if .GeneratedBy}}// {{.GeneratedBy}}
+package {{.PackageName}}
-{{end}}package {{.PackageName}}
 
 {{if .Imports -}}
 import (

pkg/writers/mssql/writer.go

@@ -11,7 +11,6 @@ import (
 
 	_ "github.com/microsoft/go-mssqldb" // MSSQL driver
 
-	"git.warky.dev/wdevs/relspecgo/pkg/buildinfo"
 	"git.warky.dev/wdevs/relspecgo/pkg/models"
 	"git.warky.dev/wdevs/relspecgo/pkg/mssql"
 	"git.warky.dev/wdevs/relspecgo/pkg/writers"
@@ -69,7 +68,7 @@ func (w *Writer) WriteDatabase(db *models.Database) error {
 	// Write header comment
 	fmt.Fprintf(w.writer, "-- MSSQL Database Schema\n")
 	fmt.Fprintf(w.writer, "-- Database: %s\n", db.Name)
-	fmt.Fprintf(w.writer, "-- Generated by %s\n\n", buildinfo.GeneratedComment())
+	fmt.Fprintf(w.writer, "-- Generated by RelSpec\n\n")
 
 	// Process each schema in the database
 	for _, schema := range db.Schemas {
@@ -478,7 +477,7 @@ func (w *Writer) executeDatabaseSQL(db *models.Database, connString string) erro
 	statements := []string{}
 	statements = append(statements, "-- MSSQL Database Schema")
 	statements = append(statements, fmt.Sprintf("-- Database: %s", db.Name))
-	statements = append(statements, "-- Generated by "+buildinfo.GeneratedComment())
+	statements = append(statements, "-- Generated by RelSpec")
 
 	for _, schema := range db.Schemas {
 		if err := w.generateSchemaStatements(schema, &statements); err != nil {

pkg/writers/pgsql/migration_writer.go

@@ -7,7 +7,6 @@ import (
 	"sort"
 	"strings"
 
-	"git.warky.dev/wdevs/relspecgo/pkg/buildinfo"
 	"git.warky.dev/wdevs/relspecgo/pkg/models"
 	"git.warky.dev/wdevs/relspecgo/pkg/pgsql"
 	"git.warky.dev/wdevs/relspecgo/pkg/writers"
@@ -144,7 +143,7 @@ func (w *MigrationWriter) WriteMigration(model, current *models.Database) error
 
 	// Write header
 	fmt.Fprintf(w.writer, "-- PostgreSQL Migration Script\n")
-	fmt.Fprintf(w.writer, "-- Generated by %s\n", buildinfo.GeneratedComment())
+	fmt.Fprintf(w.writer, "-- Generated by RelSpec\n")
 	fmt.Fprintf(w.writer, "-- Source: %s -> %s\n", current.Name, model.Name)
 	if w.options.ContinueOnError {
 		fmt.Fprintf(w.writer, "\\set ON_ERROR_STOP off\n")

pkg/writers/pgsql/writer.go

@@ -12,7 +12,6 @@ import (
 	"sync"
 	"time"
 
-	"git.warky.dev/wdevs/relspecgo/pkg/buildinfo"
 	"git.warky.dev/wdevs/relspecgo/pkg/models"
 	"git.warky.dev/wdevs/relspecgo/pkg/pgsql"
 	"git.warky.dev/wdevs/relspecgo/pkg/writers"
@@ -102,7 +101,7 @@ func (w *Writer) WriteDatabase(db *models.Database) error {
 	// Write header comment
 	fmt.Fprintf(w.writer, "-- PostgreSQL Database Schema\n")
 	fmt.Fprintf(w.writer, "-- Database: %s\n", db.Name)
-	fmt.Fprintf(w.writer, "-- Generated by %s\n", buildinfo.GeneratedComment())
+	fmt.Fprintf(w.writer, "-- Generated by RelSpec\n")
 	if w.options.ContinueOnError {
 		fmt.Fprintf(w.writer, "\\set ON_ERROR_STOP off\n")
 	}
@@ -126,7 +125,7 @@ func (w *Writer) GenerateDatabaseStatements(db *models.Database) ([]string, erro
 	// Add header comment
 	statements = append(statements, "-- PostgreSQL Database Schema")
 	statements = append(statements, fmt.Sprintf("-- Database: %s", db.Name))
-	statements = append(statements, "-- Generated by "+buildinfo.GeneratedComment())
+	statements = append(statements, "-- Generated by RelSpec")
 
 	// Process each schema in the database
 	for _, schema := range db.Schemas {
@@ -570,7 +569,7 @@ func (w *Writer) GenerateAddColumnsForDatabase(db *models.Database) ([]string, e
 
 	statements = append(statements, "-- Add missing columns to existing tables")
 	statements = append(statements, fmt.Sprintf("-- Database: %s", db.Name))
-	statements = append(statements, "-- Generated by "+buildinfo.GeneratedComment())
+	statements = append(statements, "-- Generated by RelSpec")
 
 	for _, schema := range db.Schemas {
 		schemaStatements, err := w.GenerateAddColumnStatements(schema)

pkg/writers/sqlite/writer.go

@@ -10,7 +10,6 @@ import (
 
 	_ "modernc.org/sqlite" // SQLite driver
 
-	"git.warky.dev/wdevs/relspecgo/pkg/buildinfo"
 	"git.warky.dev/wdevs/relspecgo/pkg/models"
 	"git.warky.dev/wdevs/relspecgo/pkg/writers"
 )
@@ -73,7 +72,7 @@ func (w *Writer) writeContent(db *models.Database) error {
 	// Write header comment
 	fmt.Fprintf(w.writer, "-- SQLite Database Schema\n")
 	fmt.Fprintf(w.writer, "-- Database: %s\n", db.Name)
-	fmt.Fprintf(w.writer, "-- Generated by %s\n", buildinfo.GeneratedComment())
+	fmt.Fprintf(w.writer, "-- Generated by RelSpec\n")
 	fmt.Fprintf(w.writer, "-- Note: SQLite has no schema concept; non-default schema names are flattened into table name prefixes (e.g., auth.sessions -> auth_sessions)\n\n")
 
 	// Enable foreign keys