Add initial Go server skeleton with HTTP handlers, middleware, job runner, and stubs

internal/job/runner.go

@@ -0,0 +1,42 @@
+package job
+
+import (
+	"context"
+	"database/sql"
+	"log"
+	"time"
+
+	"github.com/example/storage-appliance/internal/domain"
+	"github.com/google/uuid"
+)
+
+type Runner struct {
+	DB *sql.DB
+}
+
+func (r *Runner) Enqueue(ctx context.Context, j domain.Job) (string, error) {
+	id := uuid.New().String()
+	if j.ID == "" {
+		j.ID = domain.UUID(id)
+	}
+	j.Status = "queued"
+	j.CreatedAt = time.Now()
+	j.UpdatedAt = time.Now()
+	_, err := r.DB.ExecContext(ctx, `INSERT INTO jobs (id, type, status, progress, owner, created_at, updated_at) VALUES (?, ?, ?, ?, ?, ?, ?)`,
+		j.ID, j.Type, j.Status, j.Progress, j.Owner, j.CreatedAt, j.UpdatedAt)
+	if err != nil {
+		return "", err
+	}
+	log.Printf("enqueued job %s (%s)", j.ID, j.Type)
+	// run async worker (very simple worker for skeleton)
+	go func() {
+		time.Sleep(1 * time.Second)
+		r.updateStatus(ctx, j.ID, "succeeded", 100)
+	}()
+	return id, nil
+}
+
+func (r *Runner) updateStatus(ctx context.Context, id domain.UUID, status string, progress int) error {
+	_, err := r.DB.ExecContext(ctx, `UPDATE jobs SET status = ?, progress = ?, updated_at = CURRENT_TIMESTAMP WHERE id = ?`, status, progress, id)
+	return err
+}