docs(ci): finalize global install runtime docs and smoke coverage

.github/workflows/installer-smoke.yml

@@ -0,0 +1,49 @@
+name: Installer Smoke
+
+on:
+  pull_request:
+  push:
+    branches:
+      - main
+      - master
+
+jobs:
+  installer-smoke-ubuntu:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 20
+          cache: npm
+      - run: npm ci
+      - run: npm link
+      - run: bash ./install/install.sh
+      - run: beadboard doctor --json
+      - run: node --import tsx --test tests/scripts/beadboard-launcher.test.ts
+      - run: node --import tsx --test tests/scripts/install-wrappers-contract.test.ts
+      - run: node --import tsx --test tests/scripts/install-sh-smoke.test.ts
+      - run: node --import tsx --test tests/skills/beadboard-driver/resolve-bb.test.ts
+
+  installer-smoke-windows:
+    runs-on: windows-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 20
+          cache: npm
+      - run: npm ci
+      - run: npm link
+      - name: Run PowerShell installer wrapper
+        shell: pwsh
+        run: .\install\install.ps1
+      - name: Run installer doctor
+        shell: pwsh
+        run: beadboard doctor --json
+      - name: Verify installed shims
+        shell: pwsh
+        run: |
+          $shimDir = Join-Path $HOME ".beadboard\bin"
+          if (!(Test-Path (Join-Path $shimDir "bb.cmd"))) { throw "Missing bb.cmd shim" }
+          if (!(Test-Path (Join-Path $shimDir "beadboard.cmd"))) { throw "Missing beadboard.cmd shim" }