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/net_play.gd

@@ -894,8 +894,27 @@ func skill_context() -> Dictionary:
 		"arrow_count": _arrow_count,
 		"cur_hp": cur_hp,
 		"cur_sp": cur_sp,
+		"bow_distance": int(_bow_distance_bonus),
+		"target_distance": Callable(self, "skill_target_distance_cm"),
 	}
 
+# rkInstMain.GetDistance(&rkInstTarget)（含 IS_HUGE_RACE −200）——施法射程判定与
+# MODE_USE_SKILL 预约趋近共用同一量度，保证预约触发时 __UseSkill 必然在射程内。
+func skill_target_distance_cm(vid: int) -> float:
+	if pc == null or pc.player == null or client == null:
+		return -1.0
+	var tnode: Node3D = net_world.node_for(vid) if net_world else null
+	if tnode == null:
+		return -1.0
+	var dist_cm: float = pc.player.global_position.distance_to(tnode.global_position) * CM
+	if _is_huge_race(int(client.get_entity(vid).get("race", 0))):
+		dist_cm -= HUGE_RACE_DIST_FIX_CM
+	return dist_cm
+
+# __IsReservedUseSkill(dwSkillSlotIndex)
+func is_use_skill_reserved(slot: int) -> bool:
+	return _reserved_mode == ReservedMode.USE_SKILL and _skill_slot_reserved == slot
+
 func _process(dt: float) -> void:
 	# 击退动作播完 -> 解除击退闸门（动作时长驱动，非计时器）。
 	if _knock_down and player_view and player_view.has_method("is_in_hit_reaction") \
@@ -1160,9 +1179,7 @@ func _reserve_process_use_skill() -> void:
 	if rv.is_empty() or tnode == null:
 		_clear_reserved()
 		return
-	var dist_cm: float = pc.player.global_position.distance_to(tnode.global_position) * CM
-	if _is_huge_race(int(rv.get("race", 0))):
-		dist_cm -= HUGE_RACE_DIST_FIX_CM
+	var dist_cm := skill_target_distance_cm(_vid_reserved)
 	if dist_cm < _skill_range_reserved:
 		if _target_vid != _vid_reserved:
 			_target_vid = _vid_reserved