精简仓库结构并增强任务链路:归档双目可选后端、新增LOS判据与自定义返航

归档 legacy/:stereo_yolo/stereo_ranger/target_tracker 三包 + 175 条测试 + demo/配置/权重/三份规格;运行链路不再依赖,默认 pytest 446 条,归档测试按需运行。

目标有效性第二判据改为 LOS 运动学一致性(pod_bridge/los_consistency.py),删除 require_vision;pod_locked() 叠加该判据,状态机随之后退重搜。

自定义返航(task_runner/return_home.py):保持转场高度回起飞点 → 恢复初始航向 → 垂直降落,不再爬 RTL_RETURN_ALT;未起飞/无起飞点/超时/异常仍退回 PX4 原生 RTL。

任务链安全兜底:主循环异常→紧急返航、stop 幂等、landing_stop 保留遥测、in_air 流复用+超时、解锁/起飞与吊舱识别仅执行一次、rtl_timeout 上限。

入口共享件拆到 utils/sitl_support.py;pod_sitl_test.py→l1_sitl_test.py;删除旧架构 test.py;相机脚本移入 tools/。

新增 .gitignore 并剔除历史误跟踪的 59 个 .pyc;requirements 按实际依赖重写;文档全面对齐,新增 legacy/README.md 与 tools/README.md。
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"""stereo_ranger —— 双目稀疏目标测距(规格:docs/双目测距技术路线.md)。
纯算法包:输入校正后坐标系的同帧左右目检测框,输出目标距离记录(Z/R/D、
虚拟双目中心方位、valid/confidence)。不做目标识别、图像采集与立体校正;
仅依赖标准库。⚠ 全部数值参数为占位值,标定与地面验证完成前不得作为飞行
控制决策依据(§12.3 红线)。
"""
from .config import StereoConfig, load_from_json
from .consistency import ConsistencyMonitor, ConsistencyStatus
from .distance_filter import DistanceFilter
from .geometry import (
DELTA_D_PX,
RangeSolution,
ValidityDecision,
confidence_from_cost,
evaluate_validity,
forward_distance_m,
range_error_abs_m,
range_error_rel,
solve_range,
virtual_center_px,
)
from .matching import GreedyMatcher, MatchPair, Matcher
from .sampling import Disparity, SamplePoint, sample_point, select_disparity
from .stereo_ranger import StereoRanger
from .target_store import TargetStore
from .types import (
BBoxXYXY,
Degradation,
Detection,
DetectionFrame,
DisparitySource,
Eye,
RangeRecord,
)
from .warn_throttle import WarnThrottle
__all__ = [
"BBoxXYXY",
"DELTA_D_PX",
"ConsistencyMonitor",
"ConsistencyStatus",
"Degradation",
"Detection",
"DetectionFrame",
"Disparity",
"DisparitySource",
"DistanceFilter",
"Eye",
"GreedyMatcher",
"MatchPair",
"Matcher",
"RangeRecord",
"RangeSolution",
"SamplePoint",
"StereoConfig",
"StereoRanger",
"TargetStore",
"ValidityDecision",
"WarnThrottle",
"confidence_from_cost",
"evaluate_validity",
"forward_distance_m",
"load_from_json",
"range_error_abs_m",
"range_error_rel",
"sample_point",
"select_disparity",
"solve_range",
"virtual_center_px",
]