feat(scheduler): lifecycle 真实接线适配器(2/2) + 装配 BuildRealConfig

把 scheduler 的 stub lifecycle 换成 SQL 后端真实实现,并接入 server:
- SQLLifecycle：MySQL 后端,同时满足 detect.LifecycleService 与
  orchestrate.LifecycleService(两个 thin adapter 包装共享核心)。
  - TransitionStatus：乐观锁 UPDATE nodes SET status WHERE id AND status=from
    → rows affected(1=成功/0=冲突 no-op)+ 写 node_events(按状态映射 enum,
    eventForStatus 纯函数已单测)+ bump directory_version,全在一个事务内。
  - ListNodes/GetNode/SetWeight/BumpVersion/GetLoad(读 LoadCache)/WriteAuditLog。
  - 已知限制:无历史 load 表 → GetLoadHistory 返回当前点(掉量规则安全降级);
    destroy 的 cert 撤销留 TODO(provision 已拆 VM,撤销为纵深防御,待机群再接)。
- BuildRealConfig：用真实 lifecycle + provisionAdapter 装配三循环。
- main.go：SCHED_ENABLED 且有 DB 时走 BuildRealConfig(provision 无厂商凭证则
  CreateNode 优雅失败、替换保持 pending),否则回退 stub。
- 全量 server 23 包测试通过;e2e(判封→drain→换机→置备)待机群+厂商凭证验证。

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

server/internal/scheduler/wiring.go

@@ -11,14 +11,63 @@ package scheduler
 
 import (
 	"context"
+	"database/sql"
 
 	"github.com/redis/go-redis/v9"
 
+	"github.com/wangjia/pangolin/server/internal/nodes"
 	"github.com/wangjia/pangolin/server/internal/scheduler/detect"
 	"github.com/wangjia/pangolin/server/internal/scheduler/orchestrate"
 	"github.com/wangjia/pangolin/server/internal/scheduler/probe"
 )
 
+// BuildRealConfig wires the scheduler against the real lifecycle (SQL-backed)
+// and provision (#14) services, replacing the no-op stubs of BuildStubConfig.
+//
+//   - detect/orchestrate lifecycle → SQLLifecycle over the nodes table + LoadCache.
+//   - provision               → provisionAdapter over the real provision.Service.
+//
+// Without vendor credentials the provision service's CreateNode fails (a pending
+// replacement simply stays pending), but all lifecycle reads/transitions operate
+// on real node rows. Capacity monitoring is left disabled (nil) as in the stub.
+//
+// e2e behaviour (auto-detect → drain → replace → provision) is verifiable only
+// against a real node fleet with vendor provisioning configured.
+func BuildRealConfig(
+	rdb *redis.Client,
+	probeStore *probe.Store,
+	db *sql.DB,
+	loads *nodes.LoadCache,
+	provSvc provisionSvc,
+	provStore provisionResolver,
+) Config {
+	sqlLC := NewSQLLifecycle(db, loads)
+	detectLC := NewDetectLifecycle(sqlLC)
+	orchLC := NewOrchestrateLifecycle(sqlLC)
+	prov := NewProvisionAdapter(provSvc, provStore)
+
+	streaks := detect.NewStreakStore(rdb)
+	engine := detect.NewEngine(probeStore, detectLC, streaks, rdb, nil, nil)
+
+	replacer := orchestrate.NewReplacer(orchestrate.Config{
+		RDB:      rdb,
+		Prov:     prov,
+		LC:       orchLC,
+		Snaps:    probeStore,
+		Breaker:  nil, // StubBreaker default until 15F policy tuned
+		Notifier: nil, // LogNotifier default
+		Clock:    nil,
+	})
+	grayscale := orchestrate.NewGrayscale(rdb, orchLC, nil)
+
+	return Config{
+		RDB:       rdb,
+		Engine:    engine,
+		Replacer:  replacer,
+		Grayscale: grayscale,
+	}
+}
+
 // BuildStubConfig constructs a scheduler Config wired entirely with in-process
 // stubs.  Useful for:
 //   - Starting the scheduler before tasks #5 / #14 are delivered (no-op ticks).
@@ -41,8 +90,8 @@ func BuildStubConfig(rdb *redis.Client, probeStore *probe.Store) Config {
 
 	streaks := detect.NewStreakStore(rdb)
 	engine := detect.NewEngine(
-		probeStore,    // 15A probe snapshot reader
-		stubDetectLC,  // 15D lifecycle (stub until #5)
+		probeStore,   // 15A probe snapshot reader
+		stubDetectLC, // 15D lifecycle (stub until #5)
 		streaks,
 		rdb,
 		nil, // notifier — LogNotifier used by default
@@ -91,8 +140,8 @@ func (stubOrchLC) TransitionStatus(_ context.Context, _, _, _ string, _ map[stri
 	return 1, nil
 }
 
-func (stubOrchLC) SetWeight(_ context.Context, _ string, _ int) error     { return nil }
-func (stubOrchLC) BumpVersion(_ context.Context) error                     { return nil }
+func (stubOrchLC) SetWeight(_ context.Context, _ string, _ int) error       { return nil }
+func (stubOrchLC) BumpVersion(_ context.Context) error                      { return nil }
 func (stubOrchLC) WriteAuditLog(_ context.Context, _, _, _, _ string) error { return nil }
 
 // stubProvision implements orchestrate.ProvisionService as a no-op.