feat(playable): 首个 Mac 联网内测版 STB-01 soak 工具与发布状态文档

- 新增 script/playable_soak.sh：先做 soak 配置/资源校验，无 --allow-gameplay
  只校验不启动客户端；N(>=10) 次独立正常退出运行 + 墙钟 soak，失败即停止后续
  运行并记 BLOCKED；写本批次 release-manifest.json 后聚合
- run_client_gate.sh：确认的故障代理对所有 suite 启动（共享场景的退出运行也经代理）；
  soak 超时下限只约束 soak 客户端（validate_soak 增加 soak_client 参数）
- 新增本地 127.0.0.1 故障代理、RSS 采样/内存判定、窗口/指标/流程模块及其测试
- forest_mob_render_test 输出 PASS/FAIL 标记，供 rendering_batch_test.sh 识别
- 新增 docs/FIRST-MAC-PLAYABLE-STATUS.md：如实记录 PASS/BLOCKED、已知问题与环境需求
- .gitignore 排除本地场景配置、凭据文件与运行输出

离线回归：rendering_batch_test.sh failures=0，playable_gate_test.sh PASS，
node 夹具测试 PASS。未联网运行，未重建候选包。

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Ft3kXpNdLbKEfg5uDLfqVF

project/effect_playback_test.gd

@@ -1,6 +1,7 @@
 extends SceneTree
 
 const EffectPlayer = preload("res://fx/effect_player.gd")
+const EffectRegistry = preload("res://fx/effect_registry.gd")
 var failures := 0
 
 func check(ok: bool, label: String) -> void:
@@ -84,5 +85,45 @@ func run() -> void:
 	check(is_equal_approx(live._particle_states[0].clock, stopped_clock),
 		"SceneTree leaves stopped clock unchanged")
 	live.free()
+	await registry_lifecycle()
 	print("effect_playback_test: failures=%d" % failures)
 	quit(1 if failures else 0)
+
+# CBT-01 evidence: EffectRegistry reports the real spawn and tree-exit boundaries.
+func registry_lifecycle() -> void:
+	var registry := EffectRegistry.new()
+	var spec := {"lights": [{"duration": 0.8, "diffuse": [1.0, 0.5, 0.2, 1.0]}]}
+	registry._path_cache["synthetic"] = "synthetic.mse"
+	registry._spec_cache["synthetic.mse"] = spec
+	var spawned: Array = []
+	var finished: Array = []
+	registry.fx_spawned.connect(func(effect: String, id: int, lifetime: int) -> void: spawned.append([effect, id, lifetime]))
+	registry.fx_finished.connect(func(effect: String, id: int, lifetime: int, elapsed: int, reason: String) -> void:
+		finished.append([effect, id, lifetime, elapsed, reason]))
+	var parent := Node3D.new()
+	root.add_child(parent)
+	var once := registry.spawn("synthetic", parent, true)
+	check(spawned.size() == 1 and spawned[0][0] == "synthetic" and spawned[0][2] == 1000,
+		"one-shot spawn reports its MSE-defined lifetime: %s" % [spawned])
+	check(finished.is_empty(), "spawn alone is not a finish")
+	await create_timer(1.8).timeout
+	check(not is_instance_valid(once), "one-shot effect left the tree on its own clock")
+	check(finished.size() == 1 and finished[0][1] == spawned[0][1] and finished[0][4] == "cleanup",
+		"tree exit reports the same id with reason cleanup: %s" % [finished])
+	if finished.size() == 1:
+		check(int(finished[0][3]) >= 1000 and int(finished[0][3]) <= 1000 + 1000,
+			"cleanup happened inside lifetime + 1s (elapsed %dms)" % int(finished[0][3]))
+	var looping := registry.spawn("synthetic", parent, false)
+	check(spawned.size() == 2 and spawned[1][2] == -1 and spawned[1][1] != spawned[0][1],
+		"looping spawn has a fresh id and no defined lifetime")
+	var early := registry.spawn("synthetic", parent, true)
+	parent.remove_child(early)
+	early.free()
+	check(finished.size() == 2 and finished[1][4] == "removed", "owner removal before cleanup reports reason removed")
+	parent.free()
+	check(finished.size() == 3 and finished[2][1] == spawned[1][1], "scene teardown closes the looping effect")
+	var orphan := Node3D.new()
+	check(registry.spawn("missing", orphan, true) == null and spawned.size() == 3,
+		"unresolvable effect emits no spawn event")
+	orphan.free()
+	await process_frame