feat: ж/д слой + cant_swim в скоринг + профили вне модели

Определение специфических рекомендаций (матрица профилей §8):

1. Ж/д слой (закрыт мёртвый railway ×2.5 у РАС):
   - /api/v1/water/{case_id} отдаёт railway=rail как LineString
     (без service/industrial/military веток), кэш общий v2;
   - railway_warning «перекрыть/проверить немедленно» по профилям;
   - SearchMap: Polyline слой ж/д (тёмно-красный), счётчики 💧/🚂.

2. cant_swim → профиль не_умеет_плавать (water ×3.0, без изменения
   радиуса, critical_warning «обследовать водоёмы НЕМЕДЛЕННО»):
   - раньше чекбокс влиял только на текст, в скоринге был пробел;
   - derive в analyze._derive_profiles — работает и для closed_cases.

3. unmodeled_profiles: ДЦП/слабое зрение/слух — честная пометка
   «вне поведенческой модели» с пояснением (vector_tasks B12:
   профили без аналога не выдавать за учтённые); блок на фронте
   в карточке здоровья.

Площадь воды: сферический эксцесс, проверен на квадрате 53° (744017 м²
vs 743272 точного). Тесты: 202 passed (новый test_cant_swim_profile).

.venv-test/lib/python3.12/site-packages/anyio/_lazyimport.py

@@ -0,0 +1,176 @@
+from __future__ import annotations
+
+__all__ = (
+    "fix_package_names",
+    "install_lazy_importer",
+    "set_deprecated_aliases",
+)
+
+import ast
+import inspect
+import sys
+import warnings
+from importlib import import_module
+from types import ModuleType
+from typing import Any
+
+
+def install_lazy_importer() -> bool:
+    module_globals = sys._getframe(1).f_globals
+    module_name = module_globals["__name__"]
+    module_prefix = module_name + "."
+    module = sys.modules[module_name]
+    lazy_map, deprecated_aliases, submodule_names = _build_lazy_map(module)
+    names = sorted(lazy_map)
+
+    # Delete symbols that are not part of the API
+    del module_globals["TYPE_CHECKING"]
+    del module_globals["install_lazy_importer"]
+
+    if not lazy_map and not deprecated_aliases:
+        return False
+
+    def __getattr__(name: str) -> Any:
+        if new_name := deprecated_aliases.get(name):
+            emit_deprecation_warning(module_name, name, new_name)
+            target_mod, target_attr = new_name.rsplit(".", 1)
+        elif name in submodule_names:
+            target_mod, target_attr = "." + name, ""
+        else:
+            try:
+                target_mod, target_attr = lazy_map[name]
+            except KeyError:
+                raise AttributeError(
+                    f"module {module_name!r} has no attribute {name!r}"
+                ) from None
+
+        imported = import_module(target_mod, module_name)
+        value = getattr(imported, target_attr) if target_attr else imported
+
+        # patch the module name to match
+        if (
+            getattr(value, "__module__", "").startswith(module_prefix)
+            and name not in deprecated_aliases
+        ):
+            value.__module__ = module_name
+
+        module_globals[name] = value
+        return value
+
+    def __dir__() -> list[str]:
+        return names
+
+    module_globals["__dir__"] = __dir__
+    module_globals["__getattr__"] = __getattr__
+    module_globals.pop("fix_package_names", None)
+    module_globals.pop("set_deprecated_aliases", None)
+    return True
+
+
+def fix_package_names() -> None:
+    module_globals = sys._getframe(1).f_globals
+    module_prefix = module_globals["__name__"] + "."
+    del module_globals[fix_package_names.__name__]
+    for value in module_globals.values():
+        if modname := getattr(value, "__module__", ""):
+            if modname.startswith(module_prefix):
+                parts = modname.split(".")
+                value.__module__ = ".".join(
+                    part for part in parts if not part.startswith("_")
+                )
+
+
+def emit_deprecation_warning(module_name: str, name: str, target: str) -> None:
+    warnings.warn(
+        f"The {module_name}.{name} alias is deprecated, use {target} instead.",
+        DeprecationWarning,
+        stacklevel=3,
+    )
+
+
+def set_deprecated_aliases(aliases: dict[str, str]) -> None:
+    module_globals = sys._getframe(1).f_globals
+    module_name = module_globals["__name__"]
+    del module_globals[set_deprecated_aliases.__name__]
+
+    def __getattr__(name: str) -> Any:
+        try:
+            target = aliases[name]
+        except KeyError:
+            raise AttributeError(
+                f"module {module_name!r} has no attribute {name!r}"
+            ) from None
+
+        emit_deprecation_warning(module_name, name, target)
+        target_modname, attrname = target.rsplit(".", 1)
+        module = import_module(target_modname)
+        return getattr(module, attrname)
+
+    sys.modules[module_name].__dict__["__getattr__"] = __getattr__
+
+
+def _build_lazy_map(
+    module: ModuleType,
+) -> tuple[dict[str, tuple[str, str]], dict[str, str], list[str]]:
+    try:
+        source = inspect.getsource(module)
+    except OSError:
+        return {}, {}, []
+
+    tree = compile(source, module.__file__ or "", "exec", ast.PyCF_ONLY_AST)
+    assert isinstance(tree, ast.Module)
+    out: dict[str, tuple[str, str]] = {}
+    deprecated_aliases: dict[str, str] = {}
+    submodule_names: list[str] = []
+
+    for node in tree.body:
+        if not isinstance(node, ast.If) or not _is_type_checking_block(node.test):
+            continue
+
+        for stmt in node.body:
+            match stmt:
+                case ast.ImportFrom():
+                    if stmt.module is None:
+                        submodule_names.extend(alias.name for alias in stmt.names)
+                    else:
+                        base = "." * stmt.level + (stmt.module or "")
+                        for alias in stmt.names:
+                            if alias.name == "*":
+                                raise RuntimeError("star imports not supported")
+
+                            exported = alias.asname or alias.name
+                            out[exported] = (base, alias.name)
+                case ast.Expr() if isinstance(stmt.value, ast.Call):
+                    call = stmt.value
+                    if (
+                        isinstance(call.func, ast.Name)
+                        and call.func.id == "set_deprecated_aliases"
+                    ):
+                        arg0 = call.args[0]
+                        assert isinstance(arg0, ast.Dict)
+                        for key, value in zip(arg0.keys, arg0.values, strict=True):
+                            assert isinstance(key, ast.Constant)
+                            assert isinstance(key.value, str)
+                            assert isinstance(value, ast.Constant)
+                            assert isinstance(value.value, str)
+                            deprecated_aliases[key.value] = value.value
+
+    return out, deprecated_aliases, submodule_names
+
+
+def _is_type_checking_block(test: ast.AST) -> bool:
+    if not isinstance(test, ast.BoolOp):
+        return False
+
+    subtest = test.values[0]
+    match subtest:
+        case ast.Name():
+            return subtest.id == "TYPE_CHECKING"
+        case ast.Attribute():
+            return (
+                isinstance(subtest.value, ast.Name)
+                and subtest.value.id == "typing"
+                and subtest.attr == "TYPE_CHECKING"
+            )
+        case _:
+            return False