feat: release v0.28 generic Go project scaffolding and lifecycle entry

examples/program/internal/svc/serviceContext.go

@@ -0,0 +1,24 @@
+package svc
+
+import (
+	"context"
+	"example.com/program/internal/config"
+	"git.yuntuo.hk/k2safe/go-omni/lifecycle"
+	"git.yuntuo.hk/k2safe/go-omni/logx"
+)
+
+// ServiceContext is project-owned. Add dependencies without global variables.
+// Runtime owns registered resources; Logger is borrowed from the entry point.
+type ServiceContext struct {
+	*lifecycle.Runtime
+	Config config.Config
+	Logger *logx.Logger
+}
+
+// Init runs before Run. Register resources immediately with OnClose.
+// Register paired OnStop/OnDrain hooks before exposing background work.
+// Use WorkContext for accepted work; Context is the early stop notification.
+// OnDrain returns nil only after processing and final cleanup have completed.
+// Complete all registrations here, before Run can race with shutdown.
+// The drain name "go-omni/project/run" is reserved for the generated entry.
+func (c *ServiceContext) Init(ctx context.Context) error { return nil }