feat(routing): 引入多执行池智能调度

将 Worker 发现、路由画像、容量与执行传输抽象为平台无关接口，新增 Kubernetes 和静态容量适配器，并以 shadow 模式接入生产配置。

实现网络与容量评分、路由防抖、池队列、同步 Worker 租约、一次性执行令牌，以及提交状态不明时禁止重复分配的安全语义。

新增 0105 兼容迁移、管理接口、指标、OpenAPI 和回归测试。已执行全量 Go 测试、go vet、OpenAPI、迁移安全、Compose 与 Kustomize 验证。

apps/api/internal/config/execution_pools_test.go

@@ -0,0 +1,27 @@
+package config
+
+import "testing"
+
+func TestCapacityPoolsAreDataDriven(t *testing.T) {
+	cfg := Config{CapacityPoolsJSON: `[
+		{"id":"pool-a","adapterRef":"deployment-a","bootstrapReplicas":1,"minReplicas":1,"maxReplicas":3},
+		{"id":"pool-b","adapterRef":"deployment-b","bootstrapReplicas":0,"minReplicas":0,"maxReplicas":2}
+	]`}
+	pools, err := cfg.CapacityPools()
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(pools) != 2 || pools[0].ID != "pool-a" || pools[1].AdapterRef != "deployment-b" {
+		t.Fatalf("pools=%+v", pools)
+	}
+}
+
+func TestCapacityPoolsRejectDuplicates(t *testing.T) {
+	cfg := Config{CapacityPoolsJSON: `[
+		{"id":"pool-a","bootstrapReplicas":1,"minReplicas":1,"maxReplicas":1},
+		{"id":"pool-a","bootstrapReplicas":1,"minReplicas":1,"maxReplicas":1}
+	]`}
+	if _, err := cfg.CapacityPools(); err == nil {
+		t.Fatal("expected duplicate pool rejection")
+	}
+}