feat: make typing available under narwhals.stable.v1

[MarcoGorelli]

dtypes is already available

I tested this in py-shiny with a local install of narwhals, and did

diff --git a/shiny/render/_data_frame_utils/_types.py b/shiny/render/_data_frame_utils/_types.py
index 2fa1bea9..48698819 100644
--- a/shiny/render/_data_frame_utils/_types.py
+++ b/shiny/render/_data_frame_utils/_types.py
@@ -14,11 +14,11 @@ from typing import (
 
 import narwhals.stable.v1 as nw
 from htmltools import TagNode
-from narwhals.dtypes import DType as DType
-from narwhals.typing import DataFrameT as DataFrameT
-from narwhals.typing import IntoDataFrame as IntoDataFrame
-from narwhals.typing import IntoDataFrameT as IntoDataFrameT
-from narwhals.typing import IntoExpr as IntoExpr
+from narwhals.stable.v1.dtypes import DType as DType
+from narwhals.stable.v1.typing import DataFrameT as DataFrameT
+from narwhals.stable.v1.typing import IntoDataFrame as IntoDataFrame
+from narwhals.stable.v1.typing import IntoDataFrameT as IntoDataFrameT
+from narwhals.stable.v1.typing import IntoExpr as IntoExpr
 
 from ..._typing_extensions import Annotated, NotRequired, Required, TypedDict
 from ...types import Jsonifiable, JsonifiableDict, ListOrTuple
diff --git a/tests/playwright/shiny/components/data_frame/data_view_info/app.py b/tests/playwright/shiny/components/data_frame/data_view_info/app.py
index 9edce24d..0d1a08d3 100644
--- a/tests/playwright/shiny/components/data_frame/data_view_info/app.py
+++ b/tests/playwright/shiny/components/data_frame/data_view_info/app.py
@@ -5,7 +5,7 @@ from __future__ import annotations
 # pyright: reportArgumentType = false
 # pyright: reportUnknownMemberType = false
 import polars as pl
-from narwhals.typing import IntoDataFrame
+from narwhals.stable.v1.typing import IntoDataFrame
 from palmerpenguins import load_penguins_raw
 
 from shiny import App, Inputs, Outputs, Session, module, render, ui
diff --git a/tests/playwright/shiny/components/data_frame/df_methods/app.py b/tests/playwright/shiny/components/data_frame/df_methods/app.py
index 3819d066..fb55d944 100644
--- a/tests/playwright/shiny/components/data_frame/df_methods/app.py
+++ b/tests/playwright/shiny/components/data_frame/df_methods/app.py
@@ -1,7 +1,7 @@
 import pandas as pd
 import polars as pl
 import seaborn as sns
-from narwhals.typing import IntoDataFrame
+from narwhals.stable.v1.typing import IntoDataFrame
 
 from shiny import App, Inputs, Outputs, Session, module, reactive, render, ui
 
diff --git a/tests/playwright/shiny/components/data_frame/row_selection/app.py b/tests/playwright/shiny/components/data_frame/row_selection/app.py
index 1d809fd5..b4c9fe7d 100644
--- a/tests/playwright/shiny/components/data_frame/row_selection/app.py
+++ b/tests/playwright/shiny/components/data_frame/row_selection/app.py
@@ -2,7 +2,7 @@ import pkgutil
 
 import palmerpenguins  # pyright: ignore[reportMissingTypeStubs]
 import polars as pl
-from narwhals.typing import IntoDataFrame
+from narwhals.stable.v1.typing import IntoDataFrame
 
 from shiny import App, Inputs, Outputs, Session, module, reactive, render, ui
 
diff --git a/tests/playwright/shiny/components/data_frame/styles/app.py b/tests/playwright/shiny/components/data_frame/styles/app.py
index cb2de7e2..ebfa9032 100644
--- a/tests/playwright/shiny/components/data_frame/styles/app.py
+++ b/tests/playwright/shiny/components/data_frame/styles/app.py
@@ -5,7 +5,7 @@ import pkgutil
 # pyright: reportMissingTypeStubs = false
 import palmerpenguins
 import polars as pl
-from narwhals.typing import IntoDataFrame
+from narwhals.stable.v1.typing import IntoDataFrame
 
 from shiny import App, Inputs, Outputs, Session, module, render, ui
 
diff --git a/tests/playwright/shiny/components/data_frame/validate_column_labels/app.py b/tests/playwright/shiny/components/data_frame/validate_column_labels/app.py
index 2ee08a11..99c321ee 100644
--- a/tests/playwright/shiny/components/data_frame/validate_column_labels/app.py
+++ b/tests/playwright/shiny/components/data_frame/validate_column_labels/app.py
@@ -4,7 +4,7 @@ import pkgutil
 
 import palmerpenguins  # pyright: ignore[reportMissingTypeStubs]
 import polars as pl
-from narwhals.typing import IntoDataFrame
+from narwhals.stable.v1.typing import IntoDataFrame
 
 from shiny import Inputs, Outputs, Session
 from shiny.express import module, render, ui
diff --git a/tests/pytest/test_render_data_frame_tbl_data.py b/tests/pytest/test_render_data_frame_tbl_data.py
index 0bb3676e..6b5b777f 100644
--- a/tests/pytest/test_render_data_frame_tbl_data.py
+++ b/tests/pytest/test_render_data_frame_tbl_data.py
@@ -341,7 +341,7 @@ def test_subset_frame_cols_single(small_df_f: IntoDataFrame):
 def test_dtype_coverage():
     from pathlib import Path
 
-    from narwhals import dtypes as nw_dtypes
+    from narwhals.stable.v1 import dtypes as nw_dtypes
 
     # Copy from https://github.com/narwhals-dev/narwhals/blob/2c9e2e7a308ebb30c6f672e27c1da2086ebbecbc/utils/check_api_reference.py#L144-L146
     dtype_names = [

and then both make check-tests and make ci-check-mypy-can-run passed

What type of PR is this? (check all applicable)

• 💾 Refactor
• ✨ Feature
• 🐛 Bug Fix
• 🔧 Optimization
• 📝 Documentation
• ✅ Test
• 🐳 Other

Related issues

• Related issue #
• Closes #

Checklist

• Code follows style guide (ruff)
• Tests added
• Documented the changes

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