chore(repo): reinitialize repository

inbox/internal/base/idgen/idgen.go

@@ -0,0 +1,51 @@
+package idgen
+
+import (
+	"crypto/rand"
+	"encoding/hex"
+	"fmt"
+	"io"
+
+	"inbox/internal/base/slug"
+	"inbox/internal/base/timeutil"
+)
+
+type Generator struct {
+	Clock      timeutil.Clock
+	Random     io.Reader
+	SuffixSize int
+}
+
+func NewGenerator(clock timeutil.Clock, random io.Reader) Generator {
+	if clock == nil {
+		clock = timeutil.SystemClock{}
+	}
+	if random == nil {
+		random = rand.Reader
+	}
+	return Generator{
+		Clock:      clock,
+		Random:     random,
+		SuffixSize: 6,
+	}
+}
+
+func (g Generator) New(kind string) (string, error) {
+	prefix := slug.NormalizeWithLimit(kind, 24)
+	if prefix == "" {
+		prefix = "id"
+	}
+	size := g.SuffixSize
+	if size <= 0 {
+		size = 6
+	}
+	buf := make([]byte, size)
+	if _, err := io.ReadFull(g.Random, buf); err != nil {
+		return "", fmt.Errorf("generate id suffix: %w", err)
+	}
+	return fmt.Sprintf("%s-%s-%s", prefix, timeutil.TimestampIDPart(g.Clock.Now()), hex.EncodeToString(buf)), nil
+}
+
+func New(kind string) (string, error) {
+	return NewGenerator(timeutil.SystemClock{}, rand.Reader).New(kind)
+}

inbox/internal/base/idgen/idgen_test.go

@@ -0,0 +1,23 @@
+package idgen
+
+import (
+	"bytes"
+	"testing"
+	"time"
+
+	"inbox/internal/base/timeutil"
+)
+
+func TestGeneratorNew(t *testing.T) {
+	gen := NewGenerator(
+		timeutil.FixedClock{Time: time.Date(2026, 3, 13, 10, 11, 12, 0, time.UTC)},
+		bytes.NewReader([]byte{0, 1, 2, 3, 4, 5}),
+	)
+	got, err := gen.New("Role Prompt")
+	if err != nil {
+		t.Fatalf("New() error = %v", err)
+	}
+	if got != "role-prompt-20260313T101112Z-000102030405" {
+		t.Fatalf("New() = %q", got)
+	}
+}