diff --git a/.github/workflows/pr-darwin-test.yml b/.github/workflows/pr-darwin-test.yml
new file mode 100644
index 00000000000..0f536f4cb36
--- /dev/null
+++ b/.github/workflows/pr-darwin-test.yml
@@ -0,0 +1,242 @@
+on:
+  workflow_call:
+    inputs:
+      job_name:
+        type: string
+        required: true
+      electron_tests:
+        type: boolean
+        default: false
+      browser_tests:
+        type: boolean
+        default: false
+      remote_tests:
+        type: boolean
+        default: false
+
+jobs:
+  macOS-test:
+    name: ${{ inputs.job_name }}
+    runs-on: macos-14-xlarge
+    env:
+      ARTIFACT_NAME: ${{ (inputs.electron_tests && 'electron') || (inputs.browser_tests && 'browser') || (inputs.remote_tests && 'remote') || 'unknown' }}
+      NPM_ARCH: arm64
+      VSCODE_ARCH: arm64
+    steps:
+      - name: Checkout microsoft/vscode
+        uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version-file: .nvmrc
+        env:
+          NODEJS_ORG_MIRROR: https://github.com/joaomoreno/node-mirror/releases/download
+
+      - name: Prepare node_modules cache key
+        run: mkdir -p .build && node build/azure-pipelines/common/computeNodeModulesCacheKey.js darwin $VSCODE_ARCH $(node -p process.arch) > .build/packagelockhash
+
+      - name: Restore node_modules cache
+        id: cache-node-modules
+        uses: actions/cache@v4
+        with:
+          path: .build/node_modules_cache
+          key: "node_modules-${{ hashFiles('.build/packagelockhash') }}"
+
+      - name: Extract node_modules cache
+        if: steps.cache-node-modules.outputs.cache-hit == 'true'
+        run: tar -xzf .build/node_modules_cache/cache.tgz
+
+      - name: Install dependencies
+        if: steps.cache-node-modules.outputs.cache-hit != 'true'
+        run: |
+          set -e
+          c++ --version
+          xcode-select -print-path
+          python3 -m pip install --break-system-packages setuptools
+
+          for i in {1..5}; do # try 5 times
+            npm ci && break
+            if [ $i -eq 5 ]; then
+              echo "Npm install failed too many times" >&2
+              exit 1
+            fi
+            echo "Npm install failed $i, trying again..."
+          done
+        env:
+          npm_config_arch: ${{ env.NPM_ARCH }}
+          VSCODE_ARCH: ${{ env.VSCODE_ARCH }}
+          ELECTRON_SKIP_BINARY_DOWNLOAD: 1
+          PLAYWRIGHT_SKIP_BROWSER_DOWNLOAD: 1
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          # Avoid using dlopen to load Kerberos on macOS which can cause missing libraries
+          # https://github.com/mongodb-js/kerberos/commit/04044d2814ad1d01e77f1ce87f26b03d86692cf2
+          # flipped the default to support legacy linux distros which shouldn't happen
+          # on macOS.
+          GYP_DEFINES: "kerberos_use_rtld=false"
+
+      - name: Create node_modules archive
+        if: steps.cache-node-modules.outputs.cache-hit != 'true'
+        run: |
+          set -e
+          node build/azure-pipelines/common/listNodeModules.js .build/node_modules_list.txt
+          mkdir -p .build/node_modules_cache
+          tar -czf .build/node_modules_cache/cache.tgz --files-from .build/node_modules_list.txt
+
+      - name: Create .build folder
+        run: mkdir -p .build
+
+      - name: Prepare built-in extensions cache key
+        run: node build/azure-pipelines/common/computeBuiltInDepsCacheKey.js > .build/builtindepshash
+
+      - name: Restore built-in extensions cache
+        id: cache-builtin-extensions
+        uses: actions/cache@v4
+        with:
+          path: .build/builtInExtensions
+          key: "builtin-extensions-${{ hashFiles('.build/builtindepshash') }}"
+
+      - name: Download built-in extensions
+        if: steps.cache-builtin-extensions.outputs.cache-hit != 'true'
+        run: node build/lib/builtInExtensions.js
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Transpile client and extensions
+        run: npm run gulp transpile-client-esbuild transpile-extensions
+
+      - name: Download Electron and Playwright
+        run: |
+          set -e
+
+          for i in {1..3}; do # try 3 times (matching retryCountOnTaskFailure: 3)
+            if npm exec -- npm-run-all -lp "electron ${{ env.VSCODE_ARCH }}" "playwright-install"; then
+              echo "Download successful on attempt $i"
+              break
+            fi
+
+            if [ $i -eq 3 ]; then
+              echo "Download failed after 3 attempts" >&2
+              exit 1
+            fi
+
+            echo "Download failed on attempt $i, retrying..."
+            sleep 5 # optional: add a small delay between retries
+          done
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: 🧪 Run unit tests (Electron)
+        if: ${{ inputs.electron_tests }}
+        timeout-minutes: 15
+        run: ./scripts/test.sh --tfs "Unit Tests"
+
+      - name: 🧪 Run unit tests (node.js)
+        if: ${{ inputs.electron_tests }}
+        timeout-minutes: 15
+        run: npm run test-node
+
+      - name: 🧪 Run unit tests (Browser, Webkit)
+        if: ${{ inputs.browser_tests }}
+        timeout-minutes: 30
+        run: npm run test-browser-no-install -- --browser webkit --tfs "Browser Unit Tests"
+        env:
+          DEBUG: "*browser*"
+
+      - name: Build integration tests
+        run: |
+          set -e
+          npm run gulp \
+            compile-extension:configuration-editing \
+            compile-extension:css-language-features-server \
+            compile-extension:emmet \
+            compile-extension:git \
+            compile-extension:github-authentication \
+            compile-extension:html-language-features-server \
+            compile-extension:ipynb \
+            compile-extension:notebook-renderers \
+            compile-extension:json-language-features-server \
+            compile-extension:markdown-language-features \
+            compile-extension-media \
+            compile-extension:microsoft-authentication \
+            compile-extension:typescript-language-features \
+            compile-extension:vscode-api-tests \
+            compile-extension:vscode-colorize-tests \
+            compile-extension:vscode-colorize-perf-tests \
+            compile-extension:vscode-test-resolver
+
+      - name: 🧪 Run integration tests (Electron)
+        if: ${{ inputs.electron_tests }}
+        timeout-minutes: 20
+        run: ./scripts/test-integration.sh --tfs "Integration Tests"
+
+      - name: 🧪 Run integration tests (Browser, Webkit)
+        if: ${{ inputs.browser_tests }}
+        timeout-minutes: 20
+        run: ./scripts/test-web-integration.sh --browser webkit
+
+      - name: 🧪 Run integration tests (Remote)
+        if: ${{ inputs.remote_tests }}
+        timeout-minutes: 20
+        run: ./scripts/test-remote-integration.sh
+
+      - name: Compile smoke tests
+        working-directory: test/smoke
+        run: npm run compile
+
+      - name: Compile extensions for smoke tests
+        run: npm run gulp compile-extension-media
+
+      - name: Diagnostics before smoke test run
+        run: ps -ef
+        continue-on-error: true
+        if: always()
+
+      - name: 🧪 Run smoke tests (Electron)
+        if: ${{ inputs.electron_tests }}
+        timeout-minutes: 20
+        run: npm run smoketest-no-compile -- --tracing
+
+      - name: 🧪 Run smoke tests (Browser, Chromium)
+        if: ${{ inputs.browser_tests }}
+        timeout-minutes: 20
+        run: npm run smoketest-no-compile -- --web --tracing --headless
+
+      - name: 🧪 Run smoke tests (Remote)
+        if: ${{ inputs.remote_tests }}
+        timeout-minutes: 20
+        run: npm run smoketest-no-compile -- --remote --tracing
+
+      - name: Diagnostics after smoke test run
+        run: ps -ef
+        continue-on-error: true
+        if: always()
+
+      - name: Publish Crash Reports
+        uses: actions/upload-artifact@v4
+        if: failure()
+        continue-on-error: true
+        with:
+          name: ${{ format('crash-dump-macos-{0}-{1}-{2}', env.VSCODE_ARCH, env.ARTIFACT_NAME, github.run_attempt) }}
+          path: .build/crashes
+          if-no-files-found: ignore
+
+      # In order to properly symbolify above crash reports
+      # (if any), we need the compiled native modules too
+      - name: Publish Node Modules
+        uses: actions/upload-artifact@v4
+        if: failure()
+        continue-on-error: true
+        with:
+          name: ${{ format('node-modules-macos-{0}-{1}-{2}', env.VSCODE_ARCH, env.ARTIFACT_NAME, github.run_attempt) }}
+          path: node_modules
+          if-no-files-found: ignore
+
+      - name: Publish Log Files
+        uses: actions/upload-artifact@v4
+        if: always()
+        continue-on-error: true
+        with:
+          name: ${{ format('logs-macos-{0}-{1}-{2}', env.VSCODE_ARCH, env.ARTIFACT_NAME, github.run_attempt) }}
+          path: .build/logs
+          if-no-files-found: ignore
diff --git a/.github/workflows/pr-linux-cli-test.yml b/.github/workflows/pr-linux-cli-test.yml
new file mode 100644
index 00000000000..7466c639cae
--- /dev/null
+++ b/.github/workflows/pr-linux-cli-test.yml
@@ -0,0 +1,46 @@
+on:
+  workflow_call:
+    inputs:
+      job_name:
+        type: string
+        required: true
+      rustup_toolchain:
+        type: string
+        required: true
+
+jobs:
+  linux-cli-test:
+    name: ${{ inputs.job_name }}
+    runs-on: [ self-hosted, 1ES.Pool=1es-vscode-oss-ubuntu-22.04-x64 ]
+    env:
+      RUSTUP_TOOLCHAIN: ${{ inputs.rustup_toolchain }}
+    steps:
+      - name: Checkout microsoft/vscode
+        uses: actions/checkout@v4
+
+      - name: Install Rust
+        run: |
+          set -e
+          curl https://sh.rustup.rs -sSf | sh -s -- -y --profile minimal --default-toolchain $RUSTUP_TOOLCHAIN
+          echo "$HOME/.cargo/bin" >> $GITHUB_PATH
+
+      - name: Set Rust version
+        run: |
+          set -e
+          rustup default $RUSTUP_TOOLCHAIN
+          rustup update $RUSTUP_TOOLCHAIN
+          rustup component add clippy
+
+      - name: Check Rust versions
+        run: |
+          set -e
+          rustc --version
+          cargo --version
+
+      - name: Clippy lint
+        run: cargo clippy -- -D warnings
+        working-directory: cli
+
+      - name: 🧪 Run unit tests
+        run: cargo test
+        working-directory: cli
diff --git a/.github/workflows/pr-linux-test.yml b/.github/workflows/pr-linux-test.yml
new file mode 100644
index 00000000000..6e75ada8b84
--- /dev/null
+++ b/.github/workflows/pr-linux-test.yml
@@ -0,0 +1,288 @@
+on:
+  workflow_call:
+    inputs:
+      job_name:
+        type: string
+        required: true
+      electron_tests:
+        type: boolean
+        default: false
+      browser_tests:
+        type: boolean
+        default: false
+      remote_tests:
+        type: boolean
+        default: false
+
+jobs:
+  linux-test:
+    name: ${{ inputs.job_name }}
+    runs-on: [ self-hosted, 1ES.Pool=1es-vscode-oss-ubuntu-22.04-x64 ]
+    env:
+      ARTIFACT_NAME: ${{ (inputs.electron_tests && 'electron') || (inputs.browser_tests && 'browser') || (inputs.remote_tests && 'remote') || 'unknown' }}
+      NPM_ARCH: x64
+      VSCODE_ARCH: x64
+    steps:
+      - name: Checkout microsoft/vscode
+        uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version-file: .nvmrc
+        env:
+          NODEJS_ORG_MIRROR: https://github.com/joaomoreno/node-mirror/releases/download
+
+      - name: Setup system services
+        run: |
+          set -e
+          # Start X server
+          ./build/azure-pipelines/linux/apt-retry.sh sudo apt-get update
+          ./build/azure-pipelines/linux/apt-retry.sh sudo apt-get install -y pkg-config \
+            xvfb \
+            libgtk-3-0 \
+            libxkbfile-dev \
+            libkrb5-dev \
+            libgbm1 \
+            rpm
+          sudo cp build/azure-pipelines/linux/xvfb.init /etc/init.d/xvfb
+          sudo chmod +x /etc/init.d/xvfb
+          sudo update-rc.d xvfb defaults
+          sudo service xvfb start
+
+      - name: Prepare node_modules cache key
+        run: mkdir -p .build && node build/azure-pipelines/common/computeNodeModulesCacheKey.js linux $VSCODE_ARCH $(node -p process.arch) > .build/packagelockhash
+
+      - name: Restore node_modules cache
+        id: cache-node-modules
+        uses: actions/cache@v4
+        with:
+          path: .build/node_modules_cache
+          key: "node_modules-${{ hashFiles('.build/packagelockhash') }}"
+
+      - name: Extract node_modules cache
+        if: steps.cache-node-modules.outputs.cache-hit == 'true'
+        run: tar -xzf .build/node_modules_cache/cache.tgz
+
+      - name: Install build dependencies
+        if: steps.cache-node-modules.outputs.cache-hit != 'true'
+        working-directory: build
+        run: |
+          set -e
+
+          for i in {1..5}; do # try 5 times
+            npm ci && break
+            if [ $i -eq 5 ]; then
+              echo "Npm install failed too many times" >&2
+              exit 1
+            fi
+            echo "Npm install failed $i, trying again..."
+          done
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Install dependencies
+        if: steps.cache-node-modules.outputs.cache-hit != 'true'
+        run: |
+          set -e
+
+          source ./build/azure-pipelines/linux/setup-env.sh
+
+          for i in {1..5}; do # try 5 times
+            npm ci && break
+            if [ $i -eq 5 ]; then
+              echo "Npm install failed too many times" >&2
+              exit 1
+            fi
+            echo "Npm install failed $i, trying again..."
+          done
+        env:
+          npm_config_arch: ${{ env.NPM_ARCH }}
+          VSCODE_ARCH: ${{ env.VSCODE_ARCH }}
+          ELECTRON_SKIP_BINARY_DOWNLOAD: 1
+          PLAYWRIGHT_SKIP_BROWSER_DOWNLOAD: 1
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Create node_modules archive
+        if: steps.cache-node-modules.outputs.cache-hit != 'true'
+        run: |
+          set -e
+          node build/azure-pipelines/common/listNodeModules.js .build/node_modules_list.txt
+          mkdir -p .build/node_modules_cache
+          tar -czf .build/node_modules_cache/cache.tgz --files-from .build/node_modules_list.txt
+
+      - name: Create .build folder
+        run: mkdir -p .build
+
+      - name: Prepare built-in extensions cache key
+        run: node build/azure-pipelines/common/computeBuiltInDepsCacheKey.js > .build/builtindepshash
+
+      - name: Restore built-in extensions cache
+        id: cache-builtin-extensions
+        uses: actions/cache@v4
+        with:
+          path: .build/builtInExtensions
+          key: "builtin-extensions-${{ hashFiles('.build/builtindepshash') }}"
+
+      - name: Download built-in extensions
+        if: steps.cache-builtin-extensions.outputs.cache-hit != 'true'
+        run: node build/lib/builtInExtensions.js
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Transpile client and extensions
+        run: npm run gulp transpile-client-esbuild transpile-extensions
+
+      - name: Download Electron and Playwright
+        run: |
+          set -e
+
+          for i in {1..3}; do # try 3 times (matching retryCountOnTaskFailure: 3)
+            if npm exec -- npm-run-all -lp "electron ${{ env.VSCODE_ARCH }}" "playwright-install"; then
+              echo "Download successful on attempt $i"
+              break
+            fi
+
+            if [ $i -eq 3 ]; then
+              echo "Download failed after 3 attempts" >&2
+              exit 1
+            fi
+
+            echo "Download failed on attempt $i, retrying..."
+            sleep 5 # optional: add a small delay between retries
+          done
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: 🧪 Run unit tests (Electron)
+        if: ${{ inputs.electron_tests }}
+        timeout-minutes: 15
+        run: ./scripts/test.sh --tfs "Unit Tests"
+        env:
+          DISPLAY: ":10"
+
+      - name: 🧪 Run unit tests (node.js)
+        if: ${{ inputs.electron_tests }}
+        timeout-minutes: 15
+        run: npm run test-node
+
+      - name: 🧪 Run unit tests (Browser, Chromium)
+        if: ${{ inputs.browser_tests }}
+        timeout-minutes: 30
+        run: npm run test-browser-no-install -- --browser chromium --tfs "Browser Unit Tests"
+        env:
+          DEBUG: "*browser*"
+
+      - name: Build integration tests
+        run: |
+          set -e
+          npm run gulp \
+            compile-extension:configuration-editing \
+            compile-extension:css-language-features-server \
+            compile-extension:emmet \
+            compile-extension:git \
+            compile-extension:github-authentication \
+            compile-extension:html-language-features-server \
+            compile-extension:ipynb \
+            compile-extension:notebook-renderers \
+            compile-extension:json-language-features-server \
+            compile-extension:markdown-language-features \
+            compile-extension-media \
+            compile-extension:microsoft-authentication \
+            compile-extension:typescript-language-features \
+            compile-extension:vscode-api-tests \
+            compile-extension:vscode-colorize-tests \
+            compile-extension:vscode-colorize-perf-tests \
+            compile-extension:vscode-test-resolver
+
+      - name: 🧪 Run integration tests (Electron)
+        if: ${{ inputs.electron_tests }}
+        timeout-minutes: 20
+        run: ./scripts/test-integration.sh --tfs "Integration Tests"
+        env:
+          DISPLAY: ":10"
+
+      - name: 🧪 Run integration tests (Browser, Chromium)
+        if: ${{ inputs.browser_tests }}
+        timeout-minutes: 20
+        run: ./scripts/test-web-integration.sh --browser chromium
+
+      - name: 🧪 Run integration tests (Remote)
+        if: ${{ inputs.remote_tests }}
+        timeout-minutes: 20
+        run: ./scripts/test-remote-integration.sh
+        env:
+          DISPLAY: ":10"
+
+      - name: Compile smoke tests
+        working-directory: test/smoke
+        run: npm run compile
+
+      - name: Compile extensions for smoke tests
+        run: npm run gulp compile-extension-media
+
+      - name: Diagnostics before smoke test run (processes, max_user_watches, number of opened file handles)
+        run: |
+          set -e
+          ps -ef
+          cat /proc/sys/fs/inotify/max_user_watches
+          lsof | wc -l
+        continue-on-error: true
+        if: always()
+
+      - name: 🧪 Run smoke tests (Electron)
+        if: ${{ inputs.electron_tests }}
+        timeout-minutes: 20
+        run: npm run smoketest-no-compile -- --tracing
+        env:
+          DISPLAY: ":10"
+
+      - name: 🧪 Run smoke tests (Browser, Chromium)
+        if: ${{ inputs.browser_tests }}
+        timeout-minutes: 20
+        run: npm run smoketest-no-compile -- --web --tracing --headless
+
+      - name: 🧪 Run smoke tests (Remote)
+        if: ${{ inputs.remote_tests }}
+        timeout-minutes: 20
+        run: npm run smoketest-no-compile -- --remote --tracing
+        env:
+          DISPLAY: ":10"
+
+      - name: Diagnostics after smoke test run (processes, max_user_watches, number of opened file handles)
+        run: |
+          set -e
+          ps -ef
+          cat /proc/sys/fs/inotify/max_user_watches
+          lsof | wc -l
+        continue-on-error: true
+        if: always()
+
+      - name: Publish Crash Reports
+        uses: actions/upload-artifact@v4
+        if: failure()
+        continue-on-error: true
+        with:
+          name: ${{ format('crash-dump-linux-{0}-{1}-{2}', env.VSCODE_ARCH, env.ARTIFACT_NAME, github.run_attempt) }}
+          path: .build/crashes
+          if-no-files-found: ignore
+
+      # In order to properly symbolify above crash reports
+      # (if any), we need the compiled native modules too
+      - name: Publish Node Modules
+        uses: actions/upload-artifact@v4
+        if: failure()
+        continue-on-error: true
+        with:
+          name: ${{ format('node-modules-linux-{0}-{1}-{2}', env.VSCODE_ARCH, env.ARTIFACT_NAME, github.run_attempt) }}
+          path: node_modules
+          if-no-files-found: ignore
+
+      - name: Publish Log Files
+        uses: actions/upload-artifact@v4
+        if: always()
+        continue-on-error: true
+        with:
+          name: ${{ format('logs-linux-{0}-{1}-{2}', env.VSCODE_ARCH, env.ARTIFACT_NAME, github.run_attempt) }}
+          path: .build/logs
+          if-no-files-found: ignore
diff --git a/.github/workflows/pr-win32-test.yml b/.github/workflows/pr-win32-test.yml
new file mode 100644
index 00000000000..35b39311be5
--- /dev/null
+++ b/.github/workflows/pr-win32-test.yml
@@ -0,0 +1,279 @@
+on:
+  workflow_call:
+    inputs:
+      job_name:
+        type: string
+        required: true
+      electron_tests:
+        type: boolean
+        default: false
+      browser_tests:
+        type: boolean
+        default: false
+      remote_tests:
+        type: boolean
+        default: false
+
+jobs:
+  windows-test:
+    name: ${{ inputs.job_name }}
+    runs-on: [ self-hosted, 1ES.Pool=1es-vscode-oss-windows-2022-x64 ]
+    env:
+      ARTIFACT_NAME: ${{ (inputs.electron_tests && 'electron') || (inputs.browser_tests && 'browser') || (inputs.remote_tests && 'remote') || 'unknown' }}
+      NPM_ARCH: x64
+      VSCODE_ARCH: x64
+    steps:
+      - name: Checkout microsoft/vscode
+        uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version-file: .nvmrc
+        env:
+          NODEJS_ORG_MIRROR: https://github.com/joaomoreno/node-mirror/releases/download
+
+      - name: Prepare node_modules cache key
+        shell: pwsh
+        run: |
+          mkdir .build -ea 0
+          node build/azure-pipelines/common/computeNodeModulesCacheKey.js win32 ${{ env.VSCODE_ARCH }} $(node -p process.arch) > .build/packagelockhash
+
+      - name: Restore node_modules cache
+        uses: actions/cache@v4
+        id: node-modules-cache
+        with:
+          path: .build/node_modules_cache
+          key: "node_modules-${{ hashFiles('.build/packagelockhash') }}"
+
+      - name: Extract node_modules cache
+        if: steps.node-modules-cache.outputs.cache-hit == 'true'
+        shell: pwsh
+        run: 7z.exe x .build/node_modules_cache/cache.7z -aoa
+
+      - name: Install dependencies
+        if: steps.node-modules-cache.outputs.cache-hit != 'true'
+        shell: pwsh
+        run: |
+          . build/azure-pipelines/win32/exec.ps1
+          $ErrorActionPreference = "Stop"
+
+          for ($i = 1; $i -le 5; $i++) {
+            try {
+              exec { npm ci }
+              break
+            }
+            catch {
+              if ($i -eq 5) {
+                Write-Error "npm ci failed after 5 attempts"
+                throw
+              }
+              Write-Host "npm ci failed attempt $i, retrying..."
+              Start-Sleep -Seconds 2
+            }
+          }
+        env:
+          npm_config_arch: ${{ env.NPM_ARCH }}
+          npm_config_foreground_scripts: "true"
+          VSCODE_ARCH: ${{ env.VSCODE_ARCH }}
+          ELECTRON_SKIP_BINARY_DOWNLOAD: 1
+          PLAYWRIGHT_SKIP_BROWSER_DOWNLOAD: 1
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Create node_modules archive
+        if: steps.node-modules-cache.outputs.cache-hit != 'true'
+        shell: pwsh
+        run: |
+          . build/azure-pipelines/win32/exec.ps1
+          $ErrorActionPreference = "Stop"
+          exec { node build/azure-pipelines/common/listNodeModules.js .build/node_modules_list.txt }
+          exec { mkdir -Force .build/node_modules_cache }
+          exec { 7z.exe a .build/node_modules_cache/cache.7z -mx3 `@.build/node_modules_list.txt }
+
+      - name: Create .build folder
+        shell: pwsh
+        run: mkdir .build -ea 0
+
+      - name: Prepare built-in extensions cache key
+        shell: pwsh
+        run: node build/azure-pipelines/common/computeBuiltInDepsCacheKey.js > .build/builtindepshash
+
+      - name: Restore built-in extensions cache
+        id: cache-builtin-extensions
+        uses: actions/cache@v4
+        with:
+          path: .build/builtInExtensions
+          key: "builtin-extensions-${{ hashFiles('.build/builtindepshash') }}"
+
+      - name: Download built-in extensions
+        if: steps.cache-builtin-extensions.outputs.cache-hit != 'true'
+        run: node build/lib/builtInExtensions.js
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Transpile client and extensions
+        shell: pwsh
+        run: npm run gulp "transpile-client-esbuild" "transpile-extensions"
+
+      - name: Download Electron and Playwright
+        shell: pwsh
+        run: |
+          for ($i = 1; $i -le 3; $i++) {
+            try {
+              npm exec -- -- npm-run-all -lp "electron ${{ env.VSCODE_ARCH }}" "playwright-install"
+              break
+            }
+            catch {
+              if ($i -eq 3) {
+                Write-Error "Download failed after 3 attempts"
+                throw
+              }
+              Write-Host "Download failed attempt $i, retrying..."
+              Start-Sleep -Seconds 2
+            }
+          }
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: 🧪 Run unit tests (Electron)
+        if: ${{ inputs.electron_tests }}
+        shell: pwsh
+        run: .\scripts\test.bat --tfs "Unit Tests"
+        timeout-minutes: 15
+
+      - name: 🧪 Run unit tests (node.js)
+        if: ${{ inputs.electron_tests }}
+        shell: pwsh
+        run: npm run test-node
+        timeout-minutes: 15
+
+      - name: 🧪 Run unit tests (Browser, Chromium)
+        if: ${{ inputs.browser_tests }}
+        shell: pwsh
+        run: node test/unit/browser/index.js --browser chromium --tfs "Browser Unit Tests"
+        env:
+          DEBUG: "*browser*"
+        timeout-minutes: 20
+
+      - name: Build integration tests
+        shell: pwsh
+        run: |
+          . build/azure-pipelines/win32/exec.ps1
+          $ErrorActionPreference = "Stop"
+          exec { npm run gulp `
+            compile-extension:configuration-editing `
+            compile-extension:css-language-features-server `
+            compile-extension:emmet `
+            compile-extension:git `
+            compile-extension:github-authentication `
+            compile-extension:html-language-features-server `
+            compile-extension:ipynb `
+            compile-extension:notebook-renderers `
+            compile-extension:json-language-features-server `
+            compile-extension:markdown-language-features `
+            compile-extension-media `
+            compile-extension:microsoft-authentication `
+            compile-extension:typescript-language-features `
+            compile-extension:vscode-api-tests `
+            compile-extension:vscode-colorize-tests `
+            compile-extension:vscode-colorize-perf-tests `
+            compile-extension:vscode-test-resolver `
+          }
+
+      - name: Diagnostics before integration test runs
+        shell: pwsh
+        run: .\build\azure-pipelines\win32\listprocesses.bat
+        continue-on-error: true
+        if: always()
+
+      - name: 🧪 Run integration tests (Electron)
+        if: ${{ inputs.electron_tests }}
+        shell: pwsh
+        run: .\scripts\test-integration.bat --tfs "Integration Tests"
+        timeout-minutes: 20
+
+      - name: 🧪 Run integration tests (Browser, Chromium)
+        if: ${{ inputs.browser_tests }}
+        shell: pwsh
+        run: .\scripts\test-web-integration.bat --browser chromium
+        timeout-minutes: 20
+
+      - name: 🧪 Run integration tests (Remote)
+        if: ${{ inputs.remote_tests }}
+        shell: pwsh
+        run: .\scripts\test-remote-integration.bat
+        timeout-minutes: 20
+
+      - name: Diagnostics after integration test runs
+        shell: pwsh
+        run: .\build\azure-pipelines\win32\listprocesses.bat
+        continue-on-error: true
+        if: always()
+
+      - name: Diagnostics before smoke test run
+        shell: pwsh
+        run: .\build\azure-pipelines\win32\listprocesses.bat
+        continue-on-error: true
+        if: always()
+
+      - name: Compile smoke tests
+        working-directory: test/smoke
+        shell: pwsh
+        run: npm run compile
+
+      - name: Compile extensions for smoke tests
+        shell: pwsh
+        run: npm run gulp compile-extension-media
+
+      - name: 🧪 Run smoke tests (Electron)
+        if: ${{ inputs.electron_tests }}
+        timeout-minutes: 20
+        shell: pwsh
+        run: npm run smoketest-no-compile -- -- --tracing
+
+      - name: 🧪 Run smoke tests (Browser, Chromium)
+        if: ${{ inputs.browser_tests }}
+        timeout-minutes: 20
+        shell: pwsh
+        run: npm run smoketest-no-compile -- -- --web --tracing --headless
+
+      - name: 🧪 Run smoke tests (Remote)
+        if: ${{ inputs.remote_tests }}
+        timeout-minutes: 20
+        shell: pwsh
+        run: npm run smoketest-no-compile -- -- --remote --tracing
+
+      - name: Diagnostics after smoke test run
+        shell: pwsh
+        run: .\build\azure-pipelines\win32\listprocesses.bat
+        continue-on-error: true
+        if: always()
+
+      - name: Publish Crash Reports
+        uses: actions/upload-artifact@v4
+        if: failure()
+        continue-on-error: true
+        with:
+          name: ${{ format('crash-dump-windows-{0}-{1}-{2}', env.VSCODE_ARCH, env.ARTIFACT_NAME, github.run_attempt) }}
+          path: .build/crashes
+          if-no-files-found: ignore
+
+      # In order to properly symbolify above crash reports
+      # (if any), we need the compiled native modules too
+      - name: Publish Node Modules
+        uses: actions/upload-artifact@v4
+        if: failure()
+        continue-on-error: true
+        with:
+          name: ${{ format('node-modules-windows-{0}-{1}-{2}', env.VSCODE_ARCH, env.ARTIFACT_NAME, github.run_attempt) }}
+          path: node_modules
+          if-no-files-found: ignore
+
+      - name: Publish Log Files
+        uses: actions/upload-artifact@v4
+        if: always()
+        continue-on-error: true
+        with:
+          name: ${{ format('logs-windows-{0}-{1}-{2}', env.VSCODE_ARCH, env.ARTIFACT_NAME, github.run_attempt) }}
+          path: .build/logs
+          if-no-files-found: ignore
diff --git a/.github/workflows/pr.yml b/.github/workflows/pr.yml
new file mode 100644
index 00000000000..004e125ec04
--- /dev/null
+++ b/.github/workflows/pr.yml
@@ -0,0 +1,148 @@
+name: Code OSS
+
+on:
+  pull_request:
+    branches:
+      - main
+      - 'release/*'
+
+permissions: {}
+
+jobs:
+  compile:
+    name: Compile & Hygiene
+    runs-on: [ self-hosted, 1ES.Pool=1es-vscode-oss-ubuntu-22.04-x64 ]
+    steps:
+      - name: Checkout microsoft/vscode
+        uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version-file: .nvmrc
+        env:
+          NODEJS_ORG_MIRROR: https://github.com/joaomoreno/node-mirror/releases/download
+
+      - name: Prepare node_modules cache key
+        run: mkdir -p .build && node build/azure-pipelines/common/computeNodeModulesCacheKey.js compile $(node -p process.arch) > .build/packagelockhash
+
+      - name: Restore node_modules cache
+        id: cache-node-modules
+        uses: actions/cache@v4
+        with:
+          path: .build/node_modules_cache
+          key: "node_modules-${{ hashFiles('.build/packagelockhash') }}"
+
+      - name: Extract node_modules cache
+        if: steps.cache-node-modules.outputs.cache-hit == 'true'
+        run: tar -xzf .build/node_modules_cache/cache.tgz
+
+      - name: Install build tools
+        if: steps.cache-node-modules.outputs.cache-hit != 'true'
+        run: sudo apt update -y && sudo apt install -y build-essential pkg-config libx11-dev libx11-xcb-dev libxkbfile-dev libnotify-bin libkrb5-dev
+
+      - name: Install dependencies
+        if: steps.cache-node-modules.outputs.cache-hit != 'true'
+        run: |
+          set -e
+
+          for i in {1..5}; do # try 5 times
+            npm ci && break
+            if [ $i -eq 5 ]; then
+              echo "Npm install failed too many times" >&2
+              exit 1
+            fi
+            echo "Npm install failed $i, trying again..."
+          done
+        env:
+          ELECTRON_SKIP_BINARY_DOWNLOAD: 1
+          PLAYWRIGHT_SKIP_BROWSER_DOWNLOAD: 1
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Create node_modules archive
+        if: steps.cache-node-modules.outputs.cache-hit != 'true'
+        run: |
+          set -e
+          node build/azure-pipelines/common/listNodeModules.js .build/node_modules_list.txt
+          mkdir -p .build/node_modules_cache
+          tar -czf .build/node_modules_cache/cache.tgz --files-from .build/node_modules_list.txt
+
+      - name: Compile /build/ folder
+        run: npm run compile
+        working-directory: build
+
+      - name: Check /build/ folder
+        run: .github/workflows/check-clean-git-state.sh
+
+      - name: Compile & Hygiene
+        run: npm exec -- npm-run-all -lp core-ci-pr extensions-ci-pr hygiene eslint valid-layers-check define-class-fields-check vscode-dts-compile-check tsec-compile-check
+
+  linux-cli-tests:
+    name: Linux
+    uses: ./.github/workflows/pr-linux-cli-test.yml
+    with:
+      job_name: CLI
+      rustup_toolchain: 1.85
+
+  linux-electron-tests:
+    name: Linux
+    uses: ./.github/workflows/pr-linux-test.yml
+    with:
+      job_name: Electron
+      electron_tests: true
+
+  linux-browser-tests:
+    name: Linux
+    uses: ./.github/workflows/pr-linux-test.yml
+    with:
+      job_name: Browser
+      browser_tests: true
+
+  linux-remote-tests:
+    name: Linux
+    uses: ./.github/workflows/pr-linux-test.yml
+    with:
+      job_name: Remote
+      remote_tests: true
+
+  macos-electron-tests:
+    name: macOS
+    uses: ./.github/workflows/pr-darwin-test.yml
+    with:
+      job_name: Electron
+      electron_tests: true
+
+  macos-browser-tests:
+    name: macOS
+    uses: ./.github/workflows/pr-darwin-test.yml
+    with:
+      job_name: Browser
+      browser_tests: true
+
+  macos-remote-tests:
+    name: macOS
+    uses: ./.github/workflows/pr-darwin-test.yml
+    with:
+      job_name: Remote
+      remote_tests: true
+
+  windows-electron-tests:
+    name: Windows
+    uses: ./.github/workflows/pr-win32-test.yml
+    with:
+      job_name: Electron
+      electron_tests: true
+
+  windows-browser-tests:
+    name: Windows
+    uses: ./.github/workflows/pr-win32-test.yml
+    with:
+      job_name: Browser
+      browser_tests: true
+
+  windows-remote-tests:
+    name: Windows
+    uses: ./.github/workflows/pr-win32-test.yml
+    with:
+      job_name: Remote
+      remote_tests: true
diff --git a/.vscode-test.js b/.vscode-test.js
index 823ef615f4f..e46484cb9df 100644
--- a/.vscode-test.js
+++ b/.vscode-test.js
@@ -97,7 +97,7 @@ const config = defineConfig(extensions.map(extension => {
 	};
 
 	config.mocha ??= {};
-	if (process.env.BUILD_ARTIFACTSTAGINGDIRECTORY) {
+	if (process.env.BUILD_ARTIFACTSTAGINGDIRECTORY || process.env.GITHUB_WORKSPACE) {
 		let suite = '';
 		if (process.env.VSCODE_BROWSER) {
 			suite = `${process.env.VSCODE_BROWSER} Browser Integration ${config.label} tests`;
@@ -112,7 +112,10 @@ const config = defineConfig(extensions.map(extension => {
 			reporterEnabled: 'spec, mocha-junit-reporter',
 			mochaJunitReporterReporterOptions: {
 				testsuitesTitle: `${suite} ${process.platform}`,
-				mochaFile: path.join(process.env.BUILD_ARTIFACTSTAGINGDIRECTORY, `test-results/${process.platform}-${process.arch}-${suite.toLowerCase().replace(/[^\w]/g, '-')}-results.xml`)
+				mochaFile: path.join(
+					process.env.BUILD_ARTIFACTSTAGINGDIRECTORY || process.env.GITHUB_WORKSPACE || __dirname,
+					`test-results/${process.platform}-${process.arch}-${suite.toLowerCase().replace(/[^\w]/g, '-')}-results.xml`
+				)
 			}
 		};
 	}
diff --git a/build/lib/fetch.js b/build/lib/fetch.js
index 078706cdd00..9f2b974b7ac 100644
--- a/build/lib/fetch.js
+++ b/build/lib/fetch.js
@@ -36,7 +36,7 @@ function fetchUrls(urls, options) {
     }));
 }
 async function fetchUrl(url, options, retries = 10, retryDelay = 1000) {
-    const verbose = !!options.verbose || !!process.env['CI'] || !!process.env['BUILD_ARTIFACTSTAGINGDIRECTORY'];
+    const verbose = !!options.verbose || !!process.env['CI'] || !!process.env['BUILD_ARTIFACTSTAGINGDIRECTORY'] || !!process.env['GITHUB_WORKSPACE'];
     try {
         let startTime = 0;
         if (verbose) {
diff --git a/build/lib/fetch.ts b/build/lib/fetch.ts
index 47a65b88fb5..f09b53e121c 100644
--- a/build/lib/fetch.ts
+++ b/build/lib/fetch.ts
@@ -42,7 +42,7 @@ export function fetchUrls(urls: string[] | string, options: IFetchOptions): es.T
 }
 
 export async function fetchUrl(url: string, options: IFetchOptions, retries = 10, retryDelay = 1000): Promise<VinylFile> {
-	const verbose = !!options.verbose || !!process.env['CI'] || !!process.env['BUILD_ARTIFACTSTAGINGDIRECTORY'];
+	const verbose = !!options.verbose || !!process.env['CI'] || !!process.env['BUILD_ARTIFACTSTAGINGDIRECTORY'] || !!process.env['GITHUB_WORKSPACE'];
 	try {
 		let startTime = 0;
 		if (verbose) {
diff --git a/extensions/configuration-editing/src/test/index.ts b/extensions/configuration-editing/src/test/index.ts
index ee8aeb0c6eb..c361b97928d 100644
--- a/extensions/configuration-editing/src/test/index.ts
+++ b/extensions/configuration-editing/src/test/index.ts
@@ -24,13 +24,15 @@ if (process.env.VSCODE_BROWSER) {
 	suite = 'Integration Configuration-Editing Tests';
 }
 
-if (process.env.BUILD_ARTIFACTSTAGINGDIRECTORY) {
+if (process.env.BUILD_ARTIFACTSTAGINGDIRECTORY || process.env.GITHUB_WORKSPACE) {
 	options.reporter = 'mocha-multi-reporters';
 	options.reporterOptions = {
 		reporterEnabled: 'spec, mocha-junit-reporter',
 		mochaJunitReporterReporterOptions: {
 			testsuitesTitle: `${suite} ${process.platform}`,
-			mochaFile: path.join(process.env.BUILD_ARTIFACTSTAGINGDIRECTORY, `test-results/${process.platform}-${process.arch}-${suite.toLowerCase().replace(/[^\w]/g, '-')}-results.xml`)
+			mochaFile: path.join(
+				process.env.BUILD_ARTIFACTSTAGINGDIRECTORY || process.env.GITHUB_WORKSPACE || __dirname,
+				`test-results/${process.platform}-${process.arch}-${suite.toLowerCase().replace(/[^\w]/g, '-')}-results.xml`)
 		}
 	};
 }
diff --git a/extensions/css-language-features/server/test/index.js b/extensions/css-language-features/server/test/index.js
index 1699883a574..0c9be2d9710 100644
--- a/extensions/css-language-features/server/test/index.js
+++ b/extensions/css-language-features/server/test/index.js
@@ -15,13 +15,15 @@ const options = {
 	timeout: 60000
 };
 
-if (process.env.BUILD_ARTIFACTSTAGINGDIRECTORY) {
+if (process.env.BUILD_ARTIFACTSTAGINGDIRECTORY || process.env.GITHUB_WORKSPACE) {
 	options.reporter = 'mocha-multi-reporters';
 	options.reporterOptions = {
 		reporterEnabled: 'spec, mocha-junit-reporter',
 		mochaJunitReporterReporterOptions: {
 			testsuitesTitle: `${suite} ${process.platform}`,
-			mochaFile: path.join(process.env.BUILD_ARTIFACTSTAGINGDIRECTORY, `test-results/${process.platform}-${process.arch}-${suite.toLowerCase().replace(/[^\w]/g, '-')}-results.xml`)
+			mochaFile: path.join(
+				process.env.BUILD_ARTIFACTSTAGINGDIRECTORY || process.env.GITHUB_WORKSPACE || __dirname,
+				`test-results/${process.platform}-${process.arch}-${suite.toLowerCase().replace(/[^\w]/g, '-')}-results.xml`)
 		}
 	};
 }
diff --git a/extensions/emmet/src/test/index.ts b/extensions/emmet/src/test/index.ts
index e36bb6f7c77..51b4929af06 100644
--- a/extensions/emmet/src/test/index.ts
+++ b/extensions/emmet/src/test/index.ts
@@ -24,13 +24,15 @@ if (process.env.VSCODE_BROWSER) {
 	suite = 'Integration Emmet Tests';
 }
 
-if (process.env.BUILD_ARTIFACTSTAGINGDIRECTORY) {
+if (process.env.BUILD_ARTIFACTSTAGINGDIRECTORY || process.env.GITHUB_WORKSPACE) {
 	options.reporter = 'mocha-multi-reporters';
 	options.reporterOptions = {
 		reporterEnabled: 'spec, mocha-junit-reporter',
 		mochaJunitReporterReporterOptions: {
 			testsuitesTitle: `${suite} ${process.platform}`,
-			mochaFile: path.join(process.env.BUILD_ARTIFACTSTAGINGDIRECTORY, `test-results/${process.platform}-${process.arch}-${suite.toLowerCase().replace(/[^\w]/g, '-')}-results.xml`)
+			mochaFile: path.join(
+				process.env.BUILD_ARTIFACTSTAGINGDIRECTORY || process.env.GITHUB_WORKSPACE || __dirname,
+				`test-results/${process.platform}-${process.arch}-${suite.toLowerCase().replace(/[^\w]/g, '-')}-results.xml`)
 		}
 	};
 }
diff --git a/extensions/git/src/test/index.ts b/extensions/git/src/test/index.ts
index c18561aaa66..da526f4d4c7 100644
--- a/extensions/git/src/test/index.ts
+++ b/extensions/git/src/test/index.ts
@@ -24,13 +24,15 @@ if (process.env.VSCODE_BROWSER) {
 	suite = 'Integration Git Tests';
 }
 
-if (process.env.BUILD_ARTIFACTSTAGINGDIRECTORY) {
+if (process.env.BUILD_ARTIFACTSTAGINGDIRECTORY || process.env.GITHUB_WORKSPACE) {
 	options.reporter = 'mocha-multi-reporters';
 	options.reporterOptions = {
 		reporterEnabled: 'spec, mocha-junit-reporter',
 		mochaJunitReporterReporterOptions: {
 			testsuitesTitle: `${suite} ${process.platform}`,
-			mochaFile: path.join(process.env.BUILD_ARTIFACTSTAGINGDIRECTORY, `test-results/${process.platform}-${process.arch}-${suite.toLowerCase().replace(/[^\w]/g, '-')}-results.xml`)
+			mochaFile: path.join(
+				process.env.BUILD_ARTIFACTSTAGINGDIRECTORY || process.env.GITHUB_WORKSPACE || __dirname,
+				`test-results/${process.platform}-${process.arch}-${suite.toLowerCase().replace(/[^\w]/g, '-')}-results.xml`)
 		}
 	};
 }
diff --git a/extensions/github/src/test/index.ts b/extensions/github/src/test/index.ts
index 6573ab1daa4..382e728bfb2 100644
--- a/extensions/github/src/test/index.ts
+++ b/extensions/github/src/test/index.ts
@@ -14,13 +14,15 @@ const options: import('mocha').MochaOptions = {
 	timeout: 60000
 };
 
-if (process.env.BUILD_ARTIFACTSTAGINGDIRECTORY) {
+if (process.env.BUILD_ARTIFACTSTAGINGDIRECTORY || process.env.GITHUB_WORKSPACE) {
 	options.reporter = 'mocha-multi-reporters';
 	options.reporterOptions = {
 		reporterEnabled: 'spec, mocha-junit-reporter',
 		mochaJunitReporterReporterOptions: {
 			testsuitesTitle: `${suite} ${process.platform}`,
-			mochaFile: path.join(process.env.BUILD_ARTIFACTSTAGINGDIRECTORY, `test-results/${process.platform}-${process.arch}-${suite.toLowerCase().replace(/[^\w]/g, '-')}-results.xml`)
+			mochaFile: path.join(
+				process.env.BUILD_ARTIFACTSTAGINGDIRECTORY || process.env.GITHUB_WORKSPACE || __dirname,
+				`test-results/${process.platform}-${process.arch}-${suite.toLowerCase().replace(/[^\w]/g, '-')}-results.xml`)
 		}
 	};
 }
diff --git a/extensions/html-language-features/server/test/index.js b/extensions/html-language-features/server/test/index.js
index 50e250b78b8..93ffe7d6c09 100644
--- a/extensions/html-language-features/server/test/index.js
+++ b/extensions/html-language-features/server/test/index.js
@@ -15,13 +15,15 @@ const options = {
 	timeout: 60000
 };
 
-if (process.env.BUILD_ARTIFACTSTAGINGDIRECTORY) {
+if (process.env.BUILD_ARTIFACTSTAGINGDIRECTORY || process.env.GITHUB_WORKSPACE) {
 	options.reporter = 'mocha-multi-reporters';
 	options.reporterOptions = {
 		reporterEnabled: 'spec, mocha-junit-reporter',
 		mochaJunitReporterReporterOptions: {
 			testsuitesTitle: `${suite} ${process.platform}`,
-			mochaFile: path.join(process.env.BUILD_ARTIFACTSTAGINGDIRECTORY, `test-results/${process.platform}-${process.arch}-${suite.toLowerCase().replace(/[^\w]/g, '-')}-results.xml`)
+			mochaFile: path.join(
+				process.env.BUILD_ARTIFACTSTAGINGDIRECTORY || process.env.GITHUB_WORKSPACE || __dirname,
+				`test-results/${process.platform}-${process.arch}-${suite.toLowerCase().replace(/[^\w]/g, '-')}-results.xml`)
 		}
 	};
 }
diff --git a/extensions/ipynb/src/test/index.ts b/extensions/ipynb/src/test/index.ts
index 290194bfb2f..d70cf2e0628 100644
--- a/extensions/ipynb/src/test/index.ts
+++ b/extensions/ipynb/src/test/index.ts
@@ -24,13 +24,15 @@ if (process.env.VSCODE_BROWSER) {
 	suite = 'Integration .ipynb Tests';
 }
 
-if (process.env.BUILD_ARTIFACTSTAGINGDIRECTORY) {
+if (process.env.BUILD_ARTIFACTSTAGINGDIRECTORY || process.env.GITHUB_WORKSPACE) {
 	options.reporter = 'mocha-multi-reporters';
 	options.reporterOptions = {
 		reporterEnabled: 'spec, mocha-junit-reporter',
 		mochaJunitReporterReporterOptions: {
 			testsuitesTitle: `${suite} ${process.platform}`,
-			mochaFile: path.join(process.env.BUILD_ARTIFACTSTAGINGDIRECTORY, `test-results/${process.platform}-${process.arch}-${suite.toLowerCase().replace(/[^\w]/g, '-')}-results.xml`)
+			mochaFile: path.join(
+				process.env.BUILD_ARTIFACTSTAGINGDIRECTORY || process.env.GITHUB_WORKSPACE || __dirname,
+				`test-results/${process.platform}-${process.arch}-${suite.toLowerCase().replace(/[^\w]/g, '-')}-results.xml`)
 		}
 	};
 }
diff --git a/extensions/markdown-language-features/src/test/index.ts b/extensions/markdown-language-features/src/test/index.ts
index 91e28d38e95..f9bd44aab27 100644
--- a/extensions/markdown-language-features/src/test/index.ts
+++ b/extensions/markdown-language-features/src/test/index.ts
@@ -24,13 +24,15 @@ if (process.env.VSCODE_BROWSER) {
 	suite = 'Integration Markdown Tests';
 }
 
-if (process.env.BUILD_ARTIFACTSTAGINGDIRECTORY) {
+if (process.env.BUILD_ARTIFACTSTAGINGDIRECTORY || process.env.GITHUB_WORKSPACE) {
 	options.reporter = 'mocha-multi-reporters';
 	options.reporterOptions = {
 		reporterEnabled: 'spec, mocha-junit-reporter',
 		mochaJunitReporterReporterOptions: {
 			testsuitesTitle: `${suite} ${process.platform}`,
-			mochaFile: path.join(process.env.BUILD_ARTIFACTSTAGINGDIRECTORY, `test-results/${process.platform}-${process.arch}-${suite.toLowerCase().replace(/[^\w]/g, '-')}-results.xml`)
+			mochaFile: path.join(
+				process.env.BUILD_ARTIFACTSTAGINGDIRECTORY || process.env.GITHUB_WORKSPACE || __dirname,
+				`test-results/${process.platform}-${process.arch}-${suite.toLowerCase().replace(/[^\w]/g, '-')}-results.xml`)
 		}
 	};
 }
diff --git a/extensions/notebook-renderers/src/test/index.ts b/extensions/notebook-renderers/src/test/index.ts
index c7a818354b7..ff61996ea9c 100644
--- a/extensions/notebook-renderers/src/test/index.ts
+++ b/extensions/notebook-renderers/src/test/index.ts
@@ -24,13 +24,15 @@ if (process.env.VSCODE_BROWSER) {
 	suite = 'Integration notebook output renderer Tests';
 }
 
-if (process.env.BUILD_ARTIFACTSTAGINGDIRECTORY) {
+if (process.env.BUILD_ARTIFACTSTAGINGDIRECTORY || process.env.GITHUB_WORKSPACE) {
 	options.reporter = 'mocha-multi-reporters';
 	options.reporterOptions = {
 		reporterEnabled: 'spec, mocha-junit-reporter',
 		mochaJunitReporterReporterOptions: {
 			testsuitesTitle: `${suite} ${process.platform}`,
-			mochaFile: path.join(process.env.BUILD_ARTIFACTSTAGINGDIRECTORY, `test-results/${process.platform}-${process.arch}-${suite.toLowerCase().replace(/[^\w]/g, '-')}-results.xml`)
+			mochaFile: path.join(
+				process.env.BUILD_ARTIFACTSTAGINGDIRECTORY || process.env.GITHUB_WORKSPACE || __dirname,
+				`test-results/${process.platform}-${process.arch}-${suite.toLowerCase().replace(/[^\w]/g, '-')}-results.xml`)
 		}
 	};
 }
diff --git a/extensions/vscode-api-tests/src/singlefolder-tests/index.ts b/extensions/vscode-api-tests/src/singlefolder-tests/index.ts
index 6798fc5a1e0..d7cce06ea62 100644
--- a/extensions/vscode-api-tests/src/singlefolder-tests/index.ts
+++ b/extensions/vscode-api-tests/src/singlefolder-tests/index.ts
@@ -24,13 +24,15 @@ if (process.env.VSCODE_BROWSER) {
 	suite = 'Integration Single Folder Tests';
 }
 
-if (process.env.BUILD_ARTIFACTSTAGINGDIRECTORY) {
+if (process.env.BUILD_ARTIFACTSTAGINGDIRECTORY || process.env.GITHUB_WORKSPACE) {
 	options.reporter = 'mocha-multi-reporters';
 	options.reporterOptions = {
 		reporterEnabled: 'spec, mocha-junit-reporter',
 		mochaJunitReporterReporterOptions: {
 			testsuitesTitle: `${suite} ${process.platform}`,
-			mochaFile: path.join(process.env.BUILD_ARTIFACTSTAGINGDIRECTORY, `test-results/${process.platform}-${process.arch}-${suite.toLowerCase().replace(/[^\w]/g, '-')}-results.xml`)
+			mochaFile: path.join(
+				process.env.BUILD_ARTIFACTSTAGINGDIRECTORY || process.env.GITHUB_WORKSPACE || __dirname,
+				`test-results/${process.platform}-${process.arch}-${suite.toLowerCase().replace(/[^\w]/g, '-')}-results.xml`)
 		}
 	};
 }
diff --git a/extensions/vscode-api-tests/src/workspace-tests/index.ts b/extensions/vscode-api-tests/src/workspace-tests/index.ts
index 314a2e0d8f4..2010b075565 100644
--- a/extensions/vscode-api-tests/src/workspace-tests/index.ts
+++ b/extensions/vscode-api-tests/src/workspace-tests/index.ts
@@ -24,13 +24,15 @@ if (process.env.VSCODE_BROWSER) {
 	suite = 'Integration Workspace Tests';
 }
 
-if (process.env.BUILD_ARTIFACTSTAGINGDIRECTORY) {
+if (process.env.BUILD_ARTIFACTSTAGINGDIRECTORY || process.env.GITHUB_WORKSPACE) {
 	options.reporter = 'mocha-multi-reporters';
 	options.reporterOptions = {
 		reporterEnabled: 'spec, mocha-junit-reporter',
 		mochaJunitReporterReporterOptions: {
 			testsuitesTitle: `${suite} ${process.platform}`,
-			mochaFile: path.join(process.env.BUILD_ARTIFACTSTAGINGDIRECTORY, `test-results/${process.platform}-${process.arch}-${suite.toLowerCase().replace(/[^\w]/g, '-')}-results.xml`)
+			mochaFile: path.join(
+				process.env.BUILD_ARTIFACTSTAGINGDIRECTORY || process.env.GITHUB_WORKSPACE || __dirname,
+				`test-results/${process.platform}-${process.arch}-${suite.toLowerCase().replace(/[^\w]/g, '-')}-results.xml`)
 		}
 	};
 }
diff --git a/extensions/vscode-colorize-perf-tests/src/index.ts b/extensions/vscode-colorize-perf-tests/src/index.ts
index 4376f31accd..65554f64ceb 100644
--- a/extensions/vscode-colorize-perf-tests/src/index.ts
+++ b/extensions/vscode-colorize-perf-tests/src/index.ts
@@ -14,13 +14,15 @@ const options: import('mocha').MochaOptions = {
 	timeout: 60000
 };
 
-if (process.env.BUILD_ARTIFACTSTAGINGDIRECTORY) {
+if (process.env.BUILD_ARTIFACTSTAGINGDIRECTORY || process.env.GITHUB_WORKSPACE) {
 	options.reporter = 'mocha-multi-reporters';
 	options.reporterOptions = {
 		reporterEnabled: 'spec, mocha-junit-reporter',
 		mochaJunitReporterReporterOptions: {
 			testsuitesTitle: `${suite} ${process.platform}`,
-			mochaFile: path.join(process.env.BUILD_ARTIFACTSTAGINGDIRECTORY, `test-results/${process.platform}-${process.arch}-${suite.toLowerCase().replace(/[^\w]/g, '-')}-results.xml`)
+			mochaFile: path.join(
+				process.env.BUILD_ARTIFACTSTAGINGDIRECTORY || process.env.GITHUB_WORKSPACE || __dirname,
+				`test-results/${process.platform}-${process.arch}-${suite.toLowerCase().replace(/[^\w]/g, '-')}-results.xml`)
 		}
 	};
 }
diff --git a/extensions/vscode-colorize-tests/src/index.ts b/extensions/vscode-colorize-tests/src/index.ts
index 51634213040..ea6a3357a63 100644
--- a/extensions/vscode-colorize-tests/src/index.ts
+++ b/extensions/vscode-colorize-tests/src/index.ts
@@ -20,7 +20,9 @@ if (process.env.BUILD_ARTIFACTSTAGINGDIRECTORY) {
 		reporterEnabled: 'spec, mocha-junit-reporter',
 		mochaJunitReporterReporterOptions: {
 			testsuitesTitle: `${suite} ${process.platform}`,
-			mochaFile: path.join(process.env.BUILD_ARTIFACTSTAGINGDIRECTORY, `test-results/${process.platform}-${process.arch}-${suite.toLowerCase().replace(/[^\w]/g, '-')}-results.xml`)
+			mochaFile: path.join(
+				process.env.BUILD_ARTIFACTSTAGINGDIRECTORY || process.env.GITHUB_WORKSPACE || __dirname,
+				`test-results/${process.platform}-${process.arch}-${suite.toLowerCase().replace(/[^\w]/g, '-')}-results.xml`)
 		}
 	};
 }
diff --git a/src/vs/base/common/platform.ts b/src/vs/base/common/platform.ts
index 4bc8f61532b..cf76f7ce0e1 100644
--- a/src/vs/base/common/platform.ts
+++ b/src/vs/base/common/platform.ts
@@ -77,7 +77,7 @@ if (typeof nodeProcess === 'object') {
 	_isLinux = (nodeProcess.platform === 'linux');
 	_isLinuxSnap = _isLinux && !!nodeProcess.env['SNAP'] && !!nodeProcess.env['SNAP_REVISION'];
 	_isElectron = isElectronProcess;
-	_isCI = !!nodeProcess.env['CI'] || !!nodeProcess.env['BUILD_ARTIFACTSTAGINGDIRECTORY'];
+	_isCI = !!nodeProcess.env['CI'] || !!nodeProcess.env['BUILD_ARTIFACTSTAGINGDIRECTORY'] || !!nodeProcess.env['GITHUB_WORKSPACE'];
 	_locale = LANGUAGE_DEFAULT;
 	_language = LANGUAGE_DEFAULT;
 	const rawNlsConfig = nodeProcess.env['VSCODE_NLS_CONFIG'];
diff --git a/test/smoke/test/index.js b/test/smoke/test/index.js
index 8e9646c0d65..b7c1277a6c6 100644
--- a/test/smoke/test/index.js
+++ b/test/smoke/test/index.js
@@ -25,13 +25,14 @@ const options = {
 	grep: opts['f'] || opts['g']
 };
 
-if (process.env.BUILD_ARTIFACTSTAGINGDIRECTORY) {
+if (process.env.BUILD_ARTIFACTSTAGINGDIRECTORY || process.env.GITHUB_WORKSPACE) {
 	options.reporter = 'mocha-multi-reporters';
 	options.reporterOptions = {
 		reporterEnabled: 'spec, mocha-junit-reporter',
 		mochaJunitReporterReporterOptions: {
 			testsuitesTitle: `${suite} ${process.platform}`,
-			mochaFile: join(process.env.BUILD_ARTIFACTSTAGINGDIRECTORY, `test-results/${process.platform}-${process.arch}-${suite.toLowerCase().replace(/[^\w]/g, '-')}-results.xml`)
+			mochaFile: join(process.env.BUILD_ARTIFACTSTAGINGDIRECTORY || process.env.GITHUB_WORKSPACE || __dirname,
+				`test-results/${process.platform}-${process.arch}-${suite.toLowerCase().replace(/[^\w]/g, '-')}-results.xml`)
 		}
 	};
 }
@@ -45,7 +46,7 @@ mocha.run(failures => {
 		const rootPath = join(__dirname, '..', '..', '..');
 		const logPath = join(rootPath, '.build', 'logs');
 
-		if (process.env.BUILD_ARTIFACTSTAGINGDIRECTORY) {
+		if (process.env.BUILD_ARTIFACTSTAGINGDIRECTORY || process.env.GITHUB_WORKSPACE) {
 			console.log(`
 ###################################################################
 #                                                                 #
diff --git a/test/unit/browser/index.js b/test/unit/browser/index.js
index d112d64ea80..7789165f19e 100644
--- a/test/unit/browser/index.js
+++ b/test/unit/browser/index.js
@@ -89,12 +89,13 @@ const isDebug = !!args.debug;
 const withReporter = (function () {
 	if (args.tfs) {
 		{
+			const testResultsRoot = process.env.BUILD_ARTIFACTSTAGINGDIRECTORY || process.env.GITHUB_WORKSPACE;
 			return (browserType, runner) => {
 				new mocha.reporters.Spec(runner);
 				new MochaJUnitReporter(runner, {
 					reporterOptions: {
 						testsuitesTitle: `${args.tfs} ${process.platform}`,
-						mochaFile: process.env.BUILD_ARTIFACTSTAGINGDIRECTORY ? path.join(process.env.BUILD_ARTIFACTSTAGINGDIRECTORY, `test-results/${process.platform}-${process.arch}-${browserType}-${args.tfs.toLowerCase().replace(/[^\w]/g, '-')}-results.xml`) : undefined
+						mochaFile: testResultsRoot ? path.join(testResultsRoot, `test-results/${process.platform}-${process.arch}-${browserType}-${args.tfs.toLowerCase().replace(/[^\w]/g, '-')}-results.xml`) : undefined
 					}
 				});
 			};
@@ -249,7 +250,7 @@ async function runTestsInBrowser(testModules, browserType, browserChannel) {
 	if (args.build) {
 		target.searchParams.set('build', 'true');
 	}
-	if (process.env.BUILD_ARTIFACTSTAGINGDIRECTORY) {
+	if (process.env.BUILD_ARTIFACTSTAGINGDIRECTORY || process.env.GITHUB_WORKSPACE) {
 		target.searchParams.set('ci', 'true');
 	}
 
diff --git a/test/unit/electron/index.js b/test/unit/electron/index.js
index f69104799ca..2072d9c2bde 100644
--- a/test/unit/electron/index.js
+++ b/test/unit/electron/index.js
@@ -326,12 +326,13 @@ app.on('ready', () => {
 	const reporters = [];
 
 	if (args.tfs) {
+		const testResultsRoot = process.env.BUILD_ARTIFACTSTAGINGDIRECTORY || process.env.GITHUB_WORKSPACE;
 		reporters.push(
 			new mocha.reporters.Spec(runner),
 			new MochaJUnitReporter(runner, {
 				reporterOptions: {
 					testsuitesTitle: `${args.tfs} ${process.platform}`,
-					mochaFile: process.env.BUILD_ARTIFACTSTAGINGDIRECTORY ? path.join(process.env.BUILD_ARTIFACTSTAGINGDIRECTORY, `test-results/${process.platform}-${process.arch}-${args.tfs.toLowerCase().replace(/[^\w]/g, '-')}-results.xml`) : undefined
+					mochaFile: testResultsRoot ? path.join(testResultsRoot, `test-results/${process.platform}-${process.arch}-${args.tfs.toLowerCase().replace(/[^\w]/g, '-')}-results.xml`) : undefined
 				}
 			}),
 		);
diff --git a/test/unit/electron/renderer.js b/test/unit/electron/renderer.js
index 661be873561..af451fbab8e 100644
--- a/test/unit/electron/renderer.js
+++ b/test/unit/electron/renderer.js
@@ -88,7 +88,7 @@ Object.assign(globalThis, {
 	__mkdirPInTests: path => fs.promises.mkdir(path, { recursive: true }),
 });
 
-const IS_CI = !!process.env.BUILD_ARTIFACTSTAGINGDIRECTORY;
+const IS_CI = !!process.env.BUILD_ARTIFACTSTAGINGDIRECTORY || !!process.env.GITHUB_WORKSPACE;
 const _tests_glob = '**/test/**/*.test.js';