diff --git a/.github/actions/setup-copilot/action.yml b/.github/actions/setup-copilot/action.yml
index e2c9542f..94cc00e8 100644
--- a/.github/actions/setup-copilot/action.yml
+++ b/.github/actions/setup-copilot/action.yml
@@ -1,5 +1,9 @@
 name: "Setup Copilot"
 description: "Setup Copilot based on the project's package.json file."
+outputs:
+  cli-path:
+    description: "Path to the Copilot CLI"
+    value: ${{ steps.cli-path.outputs.path }}
 runs:
   using: "composite"
   steps:
diff --git a/.github/workflows/dotnet-sdk-tests.yml b/.github/workflows/dotnet-sdk-tests.yml
new file mode 100644
index 00000000..a30c4cc5
--- /dev/null
+++ b/.github/workflows/dotnet-sdk-tests.yml
@@ -0,0 +1,73 @@
+name: ".NET SDK Tests"
+
+on:
+  pull_request:
+    paths:
+      - 'dotnet/**'
+      - 'test/**'
+      - 'nodejs/package.json'
+      - '.github/workflows/dotnet-sdk-tests.yml'
+      - '.github/actions/setup-copilot/**'
+  workflow_dispatch:
+  merge_group:
+
+permissions:
+  contents: read
+
+jobs:
+  test:
+    name: ".NET SDK Tests"
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, macos-latest, windows-latest]
+    runs-on: ${{ matrix.os }}
+    defaults:
+      run:
+        shell: bash
+        working-directory: ./dotnet
+    steps:
+      - uses: actions/checkout@v6.0.2
+      - uses: ./.github/actions/setup-copilot
+        id: setup-copilot
+      - uses: actions/setup-dotnet@v5
+        with:
+          dotnet-version: "8.0.x"
+      - uses: actions/setup-node@v6
+        with:
+          cache: "npm"
+          cache-dependency-path: "./nodejs/package-lock.json"
+
+      - name: Install Node.js dependencies (for CLI)
+        working-directory: ./nodejs
+        run: npm ci --ignore-scripts
+
+      - name: Restore .NET dependencies
+        run: dotnet restore
+
+      - name: Run dotnet format check
+        if: runner.os == 'Linux'
+        run: |
+          dotnet format --verify-no-changes
+          if [ $? -ne 0 ]; then
+            echo "❌ dotnet format produced changes. Please run 'dotnet format' in dotnet"
+            exit 1
+          fi
+          echo "✅ dotnet format produced no changes"
+
+      - name: Build SDK
+        run: dotnet build --no-restore
+
+      - name: Install test harness dependencies
+        working-directory: ./test/harness
+        run: npm ci --ignore-scripts
+
+      - name: Warm up PowerShell
+        if: runner.os == 'Windows'
+        run: pwsh.exe -Command "Write-Host 'PowerShell ready'"
+
+      - name: Run .NET SDK tests
+        env:
+          COPILOT_HMAC_KEY: ${{ secrets.COPILOT_DEVELOPER_CLI_INTEGRATION_HMAC_KEY }}
+          COPILOT_CLI_PATH: ${{ steps.setup-copilot.outputs.cli-path }}
+        run: dotnet test --no-build -v n
diff --git a/.github/workflows/go-sdk-tests.yml b/.github/workflows/go-sdk-tests.yml
new file mode 100644
index 00000000..3692aa99
--- /dev/null
+++ b/.github/workflows/go-sdk-tests.yml
@@ -0,0 +1,69 @@
+name: "Go SDK Tests"
+
+on:
+  pull_request:
+    paths:
+      - 'go/**'
+      - 'test/**'
+      - 'nodejs/package.json'
+      - '.github/workflows/go-sdk-tests.yml'
+      - '.github/actions/setup-copilot/**'
+  workflow_dispatch:
+  merge_group:
+
+permissions:
+  contents: read
+
+jobs:
+  test:
+    name: "Go SDK Tests"
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, macos-latest, windows-latest]
+    runs-on: ${{ matrix.os }}
+    defaults:
+      run:
+        shell: bash
+        working-directory: ./go
+    steps:
+      - uses: actions/checkout@v6.0.2
+      - uses: ./.github/actions/setup-copilot
+        id: setup-copilot
+      - uses: actions/setup-go@v6
+        with:
+          go-version: "1.23"
+
+      - name: Run go fmt
+        if: runner.os == 'Linux'
+        working-directory: ./go
+        run: |
+          go fmt ./...
+          if [ -n "$(git status --porcelain)" ]; then
+            echo "❌ go fmt produced changes. Please run 'go fmt ./...' in go"
+            git --no-pager diff
+            exit 1
+          fi
+          echo "✅ go fmt produced no changes"
+
+      - name: Install golangci-lint
+        if: runner.os == 'Linux'
+        uses: golangci/golangci-lint-action@v9
+        with:
+          working-directory: ./go
+          version: latest
+          args: --timeout=5m
+
+      - name: Install test harness dependencies
+        working-directory: ./test/harness
+        run: npm ci --ignore-scripts
+
+      - name: Warm up PowerShell
+        if: runner.os == 'Windows'
+        run: pwsh.exe -Command "Write-Host 'PowerShell ready'"
+
+      - name: Run Go SDK tests
+        env:
+          COPILOT_HMAC_KEY: ${{ secrets.COPILOT_DEVELOPER_CLI_INTEGRATION_HMAC_KEY }}
+          COPILOT_CLI_PATH: ${{ steps.setup-copilot.outputs.cli-path }}
+        run: /bin/bash test.sh
diff --git a/.github/workflows/nodejs-sdk-tests.yml b/.github/workflows/nodejs-sdk-tests.yml
new file mode 100644
index 00000000..24b05665
--- /dev/null
+++ b/.github/workflows/nodejs-sdk-tests.yml
@@ -0,0 +1,65 @@
+name: "Node.js SDK Tests"
+
+env:
+  HUSKY: 0
+
+on:
+  pull_request:
+    paths:
+      - 'nodejs/**'
+      - 'test/**'
+      - '.github/workflows/nodejs-sdk-tests.yml'
+      - '.github/actions/setup-copilot/**'
+  workflow_dispatch:
+  merge_group:
+
+permissions:
+  contents: read
+
+jobs:
+  test:
+    name: "Node.js SDK Tests"
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, macos-latest, windows-latest]
+    runs-on: ${{ matrix.os }}
+    defaults:
+      run:
+        shell: bash
+        working-directory: ./nodejs
+    steps:
+      - uses: actions/checkout@v6.0.2
+      - uses: actions/setup-node@v6
+        with:
+          cache: "npm"
+          cache-dependency-path: "./nodejs/package-lock.json"
+          node-version: 22
+      - uses: ./.github/actions/setup-copilot
+        id: setup-copilot
+      - name: Install dependencies
+        run: npm ci --ignore-scripts
+
+      - name: Run prettier check
+        if: runner.os == 'Linux'
+        run: npm run format:check
+
+      - name: Run ESLint
+        run: npm run lint
+
+      - name: Typecheck SDK
+        run: npm run typecheck
+
+      - name: Install test harness dependencies
+        working-directory: ./test/harness
+        run: npm ci --ignore-scripts
+
+      - name: Warm up PowerShell
+        if: runner.os == 'Windows'
+        run: pwsh.exe -Command "Write-Host 'PowerShell ready'"
+
+      - name: Run Node.js SDK tests
+        env:
+          COPILOT_HMAC_KEY: ${{ secrets.COPILOT_DEVELOPER_CLI_INTEGRATION_HMAC_KEY }}
+          COPILOT_CLI_PATH: ${{ steps.setup-copilot.outputs.cli-path }}
+        run: npm test
diff --git a/.github/workflows/python-sdk-tests.yml b/.github/workflows/python-sdk-tests.yml
new file mode 100644
index 00000000..7690f877
--- /dev/null
+++ b/.github/workflows/python-sdk-tests.yml
@@ -0,0 +1,69 @@
+name: "Python SDK Tests"
+
+env:
+  PYTHONUTF8: 1
+
+on:
+  pull_request:
+    paths:
+      - 'python/**'
+      - 'test/**'
+      - 'nodejs/package.json'
+      - '.github/workflows/python-sdk-tests.yml'
+      - '.github/actions/setup-copilot/**'
+  workflow_dispatch:
+  merge_group:
+
+permissions:
+  contents: read
+
+jobs:
+  test:
+    name: "Python SDK Tests"
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, macos-latest, windows-latest]
+    runs-on: ${{ matrix.os }}
+    defaults:
+      run:
+        shell: bash
+        working-directory: ./python
+    steps:
+      - uses: actions/checkout@v6.0.2
+      - uses: ./.github/actions/setup-copilot
+        id: setup-copilot
+      - uses: actions/setup-python@v6
+        with:
+          python-version: "3.12"
+
+      - name: Set up uv
+        uses: astral-sh/setup-uv@v7
+        with:
+          enable-cache: true
+
+      - name: Install Python dev dependencies
+        run: uv sync --locked --all-extras --dev
+
+      - name: Run ruff format check
+        run: uv run ruff format --check .
+
+      - name: Run ruff lint
+        run: uv run ruff check
+
+      - name: Run ty type checking
+        run: uv run ty check copilot
+
+      - name: Install test harness dependencies
+        working-directory: ./test/harness
+        run: npm ci --ignore-scripts
+
+      - name: Warm up PowerShell
+        if: runner.os == 'Windows'
+        run: pwsh.exe -Command "Write-Host 'PowerShell ready'"
+
+      - name: Run Python SDK tests
+        env:
+          COPILOT_HMAC_KEY: ${{ secrets.COPILOT_DEVELOPER_CLI_INTEGRATION_HMAC_KEY }}
+          COPILOT_CLI_PATH: ${{ steps.setup-copilot.outputs.cli-path }}
+        run: uv run pytest -v -s
diff --git a/.github/workflows/sdk-e2e-tests.yml b/.github/workflows/sdk-e2e-tests.yml
deleted file mode 100644
index bae0a36b..00000000
--- a/.github/workflows/sdk-e2e-tests.yml
+++ /dev/null
@@ -1,218 +0,0 @@
-name: "SDK E2E Tests"
-
-env:
-  HUSKY: 0
-  PYTHONUTF8: 1
-
-on:
-  push:
-    branches: [main]
-  pull_request:
-  workflow_dispatch:
-  merge_group:
-
-permissions:
-  contents: read
-
-jobs:
-  nodejs-sdk:
-    name: "Node.js SDK Tests"
-    strategy:
-      fail-fast: false
-      matrix:
-        os: [ubuntu-latest, macos-latest, windows-latest]
-    runs-on: ${{ matrix.os }}
-    defaults:
-      run:
-        shell: bash
-        working-directory: ./nodejs
-    steps:
-      - uses: actions/checkout@v6.0.2
-      - uses: actions/setup-node@v6
-        with:
-          cache: "npm"
-          cache-dependency-path: "./nodejs/package-lock.json"
-          node-version: 22
-      - uses: ./.github/actions/setup-copilot
-      - name: Install dependencies
-        run: npm ci --ignore-scripts
-
-      - name: Run prettier check
-        if: runner.os == 'Linux'
-        run: npm run format:check
-
-      - name: Run ESLint
-        run: npm run lint
-
-      - name: Typecheck SDK
-        run: npm run typecheck
-
-      - name: Install test harness dependencies
-        working-directory: ./test/harness
-        run: npm ci --ignore-scripts
-
-      - name: Warm up PowerShell
-        if: runner.os == 'Windows'
-        run: pwsh.exe -Command "Write-Host 'PowerShell ready'"
-
-      - name: Run Node.js SDK tests
-        env:
-          COPILOT_HMAC_KEY: ${{ secrets.COPILOT_DEVELOPER_CLI_INTEGRATION_HMAC_KEY }}
-          COPILOT_CLI_PATH: ${{ steps.cli-path.outputs.path }}
-        run: npm test
-
-  go-sdk:
-    name: "Go SDK Tests"
-    strategy:
-      fail-fast: false
-      matrix:
-        os: [ubuntu-latest, macos-latest, windows-latest]
-    runs-on: ${{ matrix.os }}
-    defaults:
-      run:
-        shell: bash
-        working-directory: ./go
-    steps:
-      - uses: actions/checkout@v6.0.2
-      - uses: ./.github/actions/setup-copilot
-      - uses: actions/setup-go@v6
-        with:
-          go-version: "1.23"
-
-      - name: Run go fmt
-        if: runner.os == 'Linux'
-        working-directory: ./go
-        run: |
-          go fmt ./...
-          if [ -n "$(git status --porcelain)" ]; then
-            echo "❌ go fmt produced changes. Please run 'go fmt ./...' in go"
-            git --no-pager diff
-            exit 1
-          fi
-          echo "✅ go fmt produced no changes"
-
-      - name: Install golangci-lint
-        if: runner.os == 'Linux'
-        uses: golangci/golangci-lint-action@v9
-        with:
-          working-directory: ./go
-          version: latest
-          args: --timeout=5m
-
-      - name: Install test harness dependencies
-        working-directory: ./test/harness
-        run: npm ci --ignore-scripts
-
-      - name: Warm up PowerShell
-        if: runner.os == 'Windows'
-        run: pwsh.exe -Command "Write-Host 'PowerShell ready'"
-
-      - name: Run Go SDK tests
-        env:
-          COPILOT_HMAC_KEY: ${{ secrets.COPILOT_DEVELOPER_CLI_INTEGRATION_HMAC_KEY }}
-          COPILOT_CLI_PATH: ${{ steps.cli-path.outputs.path }}
-        run: /bin/bash test.sh
-
-  python-sdk:
-    name: "Python SDK Tests"
-    strategy:
-      fail-fast: false
-      matrix:
-        os: [ubuntu-latest, macos-latest, windows-latest]
-    runs-on: ${{ matrix.os }}
-    defaults:
-      run:
-        shell: bash
-        working-directory: ./python
-    steps:
-      - uses: actions/checkout@v6.0.2
-      - uses: ./.github/actions/setup-copilot
-      - uses: actions/setup-python@v6
-        with:
-          python-version: "3.12"
-
-      - name: Set up uv
-        uses: astral-sh/setup-uv@v7
-        with:
-          enable-cache: true
-
-      - name: Install Python dev dependencies
-        run: uv sync --locked --all-extras --dev
-
-      - name: Run ruff format check
-        run: uv run ruff format --check .
-
-      - name: Run ruff lint
-        run: uv run ruff check
-
-      - name: Run ty type checking
-        run: uv run ty check copilot
-
-      - name: Install test harness dependencies
-        working-directory: ./test/harness
-        run: npm ci --ignore-scripts
-
-      - name: Warm up PowerShell
-        if: runner.os == 'Windows'
-        run: pwsh.exe -Command "Write-Host 'PowerShell ready'"
-
-      - name: Run Python SDK tests
-        env:
-          COPILOT_HMAC_KEY: ${{ secrets.COPILOT_DEVELOPER_CLI_INTEGRATION_HMAC_KEY }}
-          COPILOT_CLI_PATH: ${{ steps.cli-path.outputs.path }}
-        run: uv run pytest -v -s
-
-  dotnet-sdk:
-    name: ".NET SDK Tests"
-    strategy:
-      fail-fast: false
-      matrix:
-        os: [ubuntu-latest, macos-latest, windows-latest]
-    runs-on: ${{ matrix.os }}
-    defaults:
-      run:
-        shell: bash
-        working-directory: ./dotnet
-    steps:
-      - uses: actions/checkout@v6.0.2
-      - uses: ./.github/actions/setup-copilot
-      - uses: actions/setup-dotnet@v5
-        with:
-          dotnet-version: "8.0.x"
-      - uses: actions/setup-node@v6
-        with:
-          cache: "npm"
-          cache-dependency-path: "./nodejs/package-lock.json"
-
-      - name: Install Node.js dependencies (for CLI)
-        working-directory: ./nodejs
-        run: npm ci --ignore-scripts
-
-      - name: Restore .NET dependencies
-        run: dotnet restore
-
-      - name: Run dotnet format check
-        if: runner.os == 'Linux'
-        run: |
-          dotnet format --verify-no-changes
-          if [ $? -ne 0 ]; then
-            echo "❌ dotnet format produced changes. Please run 'dotnet format' in dotnet"
-            exit 1
-          fi
-          echo "✅ dotnet format produced no changes"
-
-      - name: Build SDK
-        run: dotnet build --no-restore
-
-      - name: Install test harness dependencies
-        working-directory: ./test/harness
-        run: npm ci --ignore-scripts
-
-      - name: Warm up PowerShell
-        if: runner.os == 'Windows'
-        run: pwsh.exe -Command "Write-Host 'PowerShell ready'"
-
-      - name: Run .NET SDK tests
-        env:
-          COPILOT_HMAC_KEY: ${{ secrets.COPILOT_DEVELOPER_CLI_INTEGRATION_HMAC_KEY }}
-        run: dotnet test --no-build -v n