merge: integrate go-agentx runtime into local_dev candidate

Bring pinative/agentx workspace registry and A-B harness onto current
local_dev; renumber goose agentx registry 00062→00066 to avoid clash
with chat-summary/provenance migrations. Keep CURRENT/MATRIX as ours
for later docs apply; union module-boundaries agentx import tree.
Path literals use workspace constants for arch-check.

cmd/bizdev-cli/main.go

@@ -24,7 +24,7 @@ import (
 func main() {
 	stageFlag := flag.String("stage", "", "执行成熟度阶段 (可选: V0.1_triage, V0.5_feasibility, V1.0_quoting)")
 	taskKey := flag.String("task", "intake", "任务标识 (intake, research, cdo_quote 等)")
-	backend := flag.String("backend", "", "智能体后端 (留空则读取 .env 配置，可选: stub, pi-agent, cursor-cli)")
+	backend := flag.String("backend", "", "智能体后端 (留空则读取 .env 配置，可选: stub, pi-agent, pi-native)")
 	project := flag.String("project", "医疗器械研发演示项目", "项目名称")
 	customer := flag.String("customer", "北京水木东方", "客户名称")
 	device := flag.String("device", "医疗器械", "设备类型")

cmd/server/main.go

@@ -20,7 +20,7 @@ func main() {
 	envPath := flag.String("env", ".env", "环境配置文件路径")
 	port := flag.Int("port", 0, "HTTP 服务端口 (默认读取配置文件或 8080)")
 	host := flag.String("host", "", "HTTP 监听主机 (默认读取配置文件或 127.0.0.1)")
-	backend := flag.String("backend", "", "智能体后端调度覆盖 (stub, pi-agent, cursor-cli)")
+	backend := flag.String("backend", "", "智能体后端调度覆盖 (stub, pi-agent, pi-native)")
 	flag.Parse()
 
 	cfg, err := config.Load(*envPath)