Make: Modernize CI toolchains, pin cibuildwheel

The Python wheel jobs broke because `pip install cibuildwheel` is unpinned
and drifted onto 4.x, which removed the `cpython-freethreading` enable group
(now a hard parse error) and dropped the experimental CPython 3.13t
free-threaded builds entirely. Pin `cibuildwheel~=4.1` so the major version
no longer moves under us, drop the now-unbuildable `313t` matrix entries, and
keep `314t` (3.14+ free-threading builds with no flag in 4.x). Verified build
identifier selection against pyproject.toml with cibuildwheel 4.1.

Refresh the rest of the CI toolchains to current best-practice versions,
prioritising anything at or near end-of-life:

- Node 20 -> 24: Node 20 reached EOL in April 2026; 24 (Krypton) is the
  active LTS and already used by the publish job. package.json `engines`
  floor raised 20 -> 22 (oldest still-maintained LTS).
- .NET 8 -> 10: .NET 10 is the current LTS (Nov 2025). Test project retargeted
  net8.0 -> net10.0 and its stale test deps bumped (Test.Sdk 17.3 -> 18.7,
  xunit 2.4 -> 2.9, runner 2.4 -> 3.1, coverlet 3.1 -> 10.0); C# LangVersion
  10 -> 13. Verified: dotnet build + 41/41 tests pass on net10.
- Go 1.22 -> 1.25: 1.22 is past the two-release support window. Verified
  build + module graph on the go 1.26 toolchain.
- Android NDK r26 -> r27c (27.2.12479018): r27 is the current LTS line.
- Emscripten 3.1.47 -> 6.0.2: the 3.1.x line is long superseded. Verified by
  running the release WASM build locally; produces valid wasm objects.
- Rust edition 2021 -> 2024: stable since Rust 1.85. Verified with a clean
  cargo check.
- Java JUnit 4.13.2 -> JUnit 5 (Jupiter 5.12.2) with useJUnitPlatform();
  Spotless 6.25 -> 8.8 (indentWithSpaces was removed, renamed to
  leadingTabsToSpaces). Assertions reordered to JUnit 5's message-last
  signature. Verified: gradle spotlessCheck + full test suite pass.
- MinGW: unpin the stale 12.2.0 and move to setup-mingw@v3, letting the
  action install the runner's current MinGW-w64 default. The existing DLL
  architecture check still guards the output.

Author: ashvardanian

.github/workflows/prerelease.yml

@@ -11,11 +11,11 @@ env:
   PYTHONUTF8: 1
   PYTHONFAULTHANDLER: 1
   PYTHON_VERSION: 3.11
-  DOTNET_VERSION: 8.0.x
-  NODE_VERSION: 20
+  DOTNET_VERSION: 10.0.x
+  NODE_VERSION: 24
   JAVA_VERSION: 21
-  GO_VERSION: "^1.22.0"
-  ANDROID_NDK_VERSION: 26.3.11579264
+  GO_VERSION: "^1.25.0"
+  ANDROID_NDK_VERSION: 27.2.12479018
   ANDROID_SDK_VERSION: 21
 
 # Sets permissions of the GITHUB_TOKEN to allow deployment to GitHub Pages
@@ -408,7 +408,7 @@ jobs:
     needs: [test_ubuntu_gcc, test_ubuntu_clang]
     strategy:
       matrix:
-        python-version: ["310", "311", "312", "313", "313t", "314", "314t"]
+        python-version: ["310", "311", "312", "313", "314", "314t"]
     steps:
       - name: Checkout
         uses: actions/checkout@v6
@@ -424,7 +424,7 @@ jobs:
           max_attempts: 3
           retry_wait_seconds: 10
           timeout_minutes: 180
-          command: python -m pip install cibuildwheel
+          command: python -m pip install "cibuildwheel~=4.1"
       - name: Build wheels
         uses: nick-fields/retry@v4
         with:
@@ -434,7 +434,6 @@ jobs:
           command: cibuildwheel --output-dir wheelhouse
         env:
           CIBW_BUILD: cp${{ matrix.python-version }}-*
-          CIBW_ENABLE: cpython-freethreading
           CIBW_PLATFORM: linux
 
   build_wheels_macos:
@@ -443,7 +442,7 @@ jobs:
     needs: [test_macos]
     strategy:
       matrix:
-        python-version: ["310", "311", "312", "313", "313t", "314", "314t"]
+        python-version: ["310", "311", "312", "313", "314", "314t"]
     steps:
       - name: Checkout
         uses: actions/checkout@v6
@@ -457,7 +456,7 @@ jobs:
           max_attempts: 3
           retry_wait_seconds: 10
           timeout_minutes: 180
-          command: python -m pip install cibuildwheel
+          command: python -m pip install "cibuildwheel~=4.1"
       - name: Build wheels
         uses: nick-fields/retry@v4
         with:
@@ -467,7 +466,6 @@ jobs:
           command: cibuildwheel --output-dir wheelhouse
         env:
           CIBW_BUILD: cp${{ matrix.python-version }}-*
-          CIBW_ENABLE: cpython-freethreading
           CIBW_PLATFORM: macos
 
   build_wheels_windows:
@@ -476,7 +474,7 @@ jobs:
     needs: [test_windows_x86]
     strategy:
       matrix:
-        python-version: ["310", "311", "312", "313", "313t", "314", "314t"]
+        python-version: ["310", "311", "312", "313", "314", "314t"]
     steps:
       - name: Checkout
         uses: actions/checkout@v6
@@ -490,7 +488,7 @@ jobs:
           max_attempts: 3
           retry_wait_seconds: 10
           timeout_minutes: 180
-          command: python -m pip install cibuildwheel
+          command: python -m pip install "cibuildwheel~=4.1"
       - name: Build wheels
         uses: nick-fields/retry@v4
         with:
@@ -500,7 +498,6 @@ jobs:
           command: cibuildwheel --output-dir wheelhouse
         env:
           CIBW_BUILD: cp${{ matrix.python-version }}-*
-          CIBW_ENABLE: cpython-freethreading
           CIBW_PLATFORM: windows
 
   test_ubuntu_cross_compilation:

.github/workflows/release.yml

@@ -8,14 +8,13 @@ env:
   GH_TOKEN: ${{ secrets.SEMANTIC_RELEASE_TOKEN }}
   PYTHONUTF8: 1
   PYTHON_VERSION: 3.11
-  DOTNET_VERSION: 8.0.x
-  NODE_VERSION: 20
+  DOTNET_VERSION: 10.0.x
+  NODE_VERSION: 24
   JAVA_VERSION: 21
-  GO_VERSION: "^1.22.0"
-  ANDROID_NDK_VERSION: 26.3.11579264
+  GO_VERSION: "^1.25.0"
+  ANDROID_NDK_VERSION: 27.2.12479018
   ANDROID_SDK_VERSION: 21
-  EMSCRIPTEN_VERSION: 3.1.47
-  MINGW_VERSION: 12.2.0
+  EMSCRIPTEN_VERSION: 6.0.2
 
 # Sets permissions of the GITHUB_TOKEN to allow deployment to GitHub Pages
 permissions:
@@ -195,10 +194,9 @@ jobs:
 
       - name: Setup MinGW
         if: matrix.arch != 'arm64'
-        uses: egor-tensin/setup-mingw@v2
+        uses: egor-tensin/setup-mingw@v3
         with:
           platform: ${{ matrix.arch }}
-          version: ${{ env.MINGW_VERSION }}
 
       - name: Setup MSVC for ARM64
         if: matrix.arch == 'arm64'
@@ -750,7 +748,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-24.04, macos-14, windows-2022]
-        python-version: ["310", "311", "312", "313", "313t", "314", "314t"]
+        python-version: ["310", "311", "312", "313", "314", "314t"]
     steps:
       - name: Check out refreshed version
         uses: actions/checkout@v6
@@ -767,12 +765,11 @@ jobs:
         if: matrix.os == 'ubuntu-24.04' # We only need QEMU for Linux builds
         uses: docker/setup-qemu-action@v3
       - name: Install cibuildwheel
-        run: python -m pip install cibuildwheel
+        run: python -m pip install "cibuildwheel~=4.1"
       - name: Build wheels
         run: cibuildwheel --output-dir wheelhouse
         env:
           CIBW_BUILD: cp${{ matrix.python-version }}-*
-          CIBW_ENABLE: cpython-freethreading # No-GIL 3.13t builds
           CIBW_TEST_SKIP: "*-win_arm64" # Too complex to emulate Windows ARM
       - name: Upload wheels
         uses: actions/upload-artifact@v5

Cargo.toml

@@ -2,7 +2,7 @@
 authors = ["Ash Vardanian <1983160+ashvardanian@users.noreply.github.com>"]
 description = "Smaller & Faster Single-File Vector Search Engine from Unum"
 documentation = "https://unum-cloud.github.io/USearch"
-edition = "2021"
+edition = "2024"
 include = [
   "/rust/**",
   "/include/**",

build.gradle

@@ -6,7 +6,7 @@ plugins {
     id 'cpp'
     id 'maven-publish'
     id 'signing'
-    id 'com.diffplug.spotless' version '6.25.0'
+    id 'com.diffplug.spotless' version '8.8.0'
 }
 
 group = "cloud.unum"
@@ -57,14 +57,15 @@ task javadocJar(type: Jar, dependsOn: javadoc) {
 }
 
 dependencies {
-    testImplementation('junit:junit:4.13.2')
+    testImplementation('org.junit.jupiter:junit-jupiter:5.12.2')
+    testRuntimeOnly('org.junit.platform:junit-platform-launcher')
 }
 
 spotless {
     format 'gradle', {
         target '*.gradle'
         trimTrailingWhitespace()
-        indentWithSpaces(4)
+        leadingTabsToSpaces(4)
         endWithNewline()
     }
 
@@ -196,6 +197,7 @@ model {
 }
 
 test {
+    useJUnitPlatform()
     forkEvery = 1
 
     dependsOn jar

csharp/Directory.Build.props

@@ -2,7 +2,7 @@
 <Project>
 
   <PropertyGroup>
-    <LangVersion>10</LangVersion>
+    <LangVersion>13</LangVersion>
   </PropertyGroup>
 
   <PropertyGroup>

csharp/src/Cloud.Unum.USearch.Tests/Cloud.Unum.USearch.Tests.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net10.0</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
     <IsPackable>false</IsPackable>
     <Nullable>enable</Nullable>
@@ -10,13 +10,13 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.3.2" />
-    <PackageReference Include="xunit" Version="2.4.2" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="2.4.5">
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.7.0" />
+    <PackageReference Include="xunit" Version="2.9.3" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="3.1.5">
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
       <PrivateAssets>all</PrivateAssets>
     </PackageReference>
-    <PackageReference Include="coverlet.collector" Version="3.1.2">
+    <PackageReference Include="coverlet.collector" Version="10.0.1">
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
       <PrivateAssets>all</PrivateAssets>
     </PackageReference>

golang/go.mod

@@ -1,3 +1,3 @@
 module github.com/unum-cloud/usearch/golang
 
-go 1.22
+go 1.25