diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 6bcd541..fd675ae 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -69,8 +69,14 @@ jobs:
           merge-multiple: true
       - name: Package SkillHub upload ZIP
         run: |
-          ./scripts/package-skill.sh
           version="${GITHUB_REF_NAME#v}"
+          install -D -m 0755 \
+            "browser-cli-v${version}-aarch64-apple-darwin" \
+            skills/lexmount-browser/bin/browser-cli
+          install -D -m 0755 \
+            "browser-cli-v${version}-x86_64-pc-windows-msvc.exe" \
+            skills/lexmount-browser/bin/browser-cli.exe
+          ./scripts/package-skill.sh
           cp dist/lexmount-browser.zip "lexmount-browser-v${version}-skillhub.zip"
           sha256sum "lexmount-browser-v${version}-skillhub.zip" > "lexmount-browser-v${version}-skillhub.zip.sha256"
       - run: cat *.sha256 | sort -k2 > SHA256SUMS
diff --git a/.gitignore b/.gitignore
index fbba973..241fe7b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
 /target/
 /dist/
+/skills/lexmount-browser/bin/
 *.tmp
diff --git a/Cargo.lock b/Cargo.lock
index 42dcf00..80881fb 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1208,7 +1208,7 @@ checksum = "db13adb97ab515a3691f56e4dbab09283d0b86cb45abd991d8634a9d6f501760"
 
 [[package]]
 name = "lexmount-browser"
-version = "1.1.7"
+version = "1.1.8"
 dependencies = [
  "base64 0.22.1",
  "clap",
diff --git a/Cargo.toml b/Cargo.toml
index b1ff033..1c4d1f4 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "lexmount-browser"
-version = "1.1.7"
+version = "1.1.8"
 edition = "2024"
 license = "MIT"
 description = "Native Rust SDK and CLI for Lexmount cloud browsers"
diff --git a/README.md b/README.md
index 19797d3..68604e4 100644
--- a/README.md
+++ b/README.md
@@ -25,16 +25,22 @@ surface.
 The publishable Skill is in `skills/lexmount-browser`. Build a deterministic ZIP:
 
 ```bash
+mkdir -p skills/lexmount-browser/bin
+cp /path/to/macos-arm64/browser-cli skills/lexmount-browser/bin/browser-cli
+cp /path/to/windows-x64/browser-cli.exe skills/lexmount-browser/bin/browser-cli.exe
 ./scripts/package-skill.sh
 ```
 
-The ZIP contains `SKILL.md` at its archive root and can be uploaded directly to
-SkillHub. Tagged releases publish it as `lexmount-browser-v<VERSION>-skillhub.zip`
-alongside the two platform binaries and `SHA256SUMS`.
+The ZIP contains `SKILL.md` at its archive root plus the signed macOS arm64
+binary at `bin/browser-cli` and the Windows x64 binary at
+`bin/browser-cli.exe`. It can be uploaded directly to SkillHub. Tagged releases
+publish it as `lexmount-browser-v<VERSION>-skillhub.zip` alongside the standalone
+platform binaries and `SHA256SUMS`.
 
-The package installer downloads a pinned GitHub Release binary and verifies its
-SHA-256 digest before installation. Set `LEXMOUNT_BROWSER_CLI_VERSION` only when
-testing a different published release.
+The Skill uses the bundled binary for the current platform. Its bootstrap script
+downloads a pinned GitHub Release binary and verifies its SHA-256 digest only as
+a fallback when the bundled binary is missing. Set `LEXMOUNT_BROWSER_CLI_VERSION`
+only when testing a different published release.
 
 Published binaries are intentionally limited to two targets: macOS arm64 and
 Windows x64. The macOS binary is signed with a Developer ID Application
diff --git a/scripts/package-skill.sh b/scripts/package-skill.sh
index 91973f2..8d5ff00 100755
--- a/scripts/package-skill.sh
+++ b/scripts/package-skill.sh
@@ -8,9 +8,30 @@ trap 'rm -rf "$staging_dir"' EXIT INT TERM
 mkdir -p "$dist_dir"
 rm -f "$dist_dir/lexmount-browser.zip"
 
+for required_binary in \
+  "$skill_dir/bin/browser-cli" \
+  "$skill_dir/bin/browser-cli.exe"
+do
+  if [ ! -f "$required_binary" ]; then
+    echo "Missing required Skill binary: $required_binary" >&2
+    exit 1
+  fi
+done
+
+file "$skill_dir/bin/browser-cli" | grep -q 'Mach-O 64-bit.*arm64' || {
+  echo "bin/browser-cli is not a macOS arm64 executable" >&2
+  exit 1
+}
+file "$skill_dir/bin/browser-cli.exe" | grep -q 'PE32+ executable.*x86-64' || {
+  echo "bin/browser-cli.exe is not a Windows x64 executable" >&2
+  exit 1
+}
+
 (
   cd "$skill_dir"
-  find . -type f ! -path './bin/*' ! -name '.DS_Store' -print | LC_ALL=C sort |
+  find . -type f ! -name '.DS_Store' \
+    \( ! -path './bin/*' -o -path './bin/browser-cli' -o -path './bin/browser-cli.exe' \) \
+    -print | LC_ALL=C sort |
     while IFS= read -r relative_path; do
       mkdir -p "$staging_dir/$(dirname -- "$relative_path")"
       cp "$relative_path" "$staging_dir/$relative_path"
@@ -20,6 +41,7 @@ rm -f "$dist_dir/lexmount-browser.zip"
 find "$staging_dir" -type d -exec chmod 0755 {} +
 find "$staging_dir" -type f -exec chmod 0644 {} +
 find "$staging_dir/scripts" -type f \( -name '*.sh' -o -name '*.ps1' \) -exec chmod 0755 {} +
+find "$staging_dir/bin" -type f -exec chmod 0755 {} +
 find "$staging_dir" -exec touch -t 198001010000 {} +
 
 (
diff --git a/skills/lexmount-browser/SKILL.md b/skills/lexmount-browser/SKILL.md
index 3a97cd6..277029e 100644
--- a/skills/lexmount-browser/SKILL.md
+++ b/skills/lexmount-browser/SKILL.md
@@ -5,11 +5,16 @@ description: Use Lexmount cloud browsers to open and interact with JavaScript-he
 
 # Lexmount Browser
 
-Use the native Rust binary at `${CODEBUDDY_SKILL_DIR}/bin/browser-cli` on macOS or `${CODEBUDDY_SKILL_DIR}/bin/browser-cli.exe` on Windows. Release binaries support macOS arm64 and Windows x64 and emit JSON. The examples below abbreviate that path as `browser-cli`; resolve it to the platform path before running commands.
+Use the bundled native Rust binary that matches the current platform:
+
+- macOS arm64: `${CODEBUDDY_SKILL_DIR}/bin/browser-cli`
+- Windows x64: `${CODEBUDDY_SKILL_DIR}/bin/browser-cli.exe`
+
+Do not run the binary for the other platform. Both binaries emit JSON. The examples below abbreviate the selected platform path as `browser-cli`; resolve it before running commands.
 
 ## Setup
 
-1. Run the platform `doctor` script from `${CODEBUDDY_SKILL_DIR}/scripts/`. If the binary is missing, run the matching bootstrap script after telling the user that it downloads a fixed-version release binary and verifies its SHA-256 digest.
+1. Run `doctor.sh` on macOS or `doctor.ps1` on Windows from `${CODEBUDDY_SKILL_DIR}/scripts/`. Use the bundled platform binary. Only if that binary is missing, run the matching bootstrap script after telling the user that it downloads a fixed-version replacement and verifies its SHA-256 digest.
 2. If credentials are missing, run `browser-cli auth login`. Let the user approve in their browser. Never ask them to paste an API key into chat.
 3. Run `browser-cli doctor` again. Continue only when `ready_for_browser_actions` is true.
 
diff --git a/skills/lexmount-browser/scripts/bootstrap.ps1 b/skills/lexmount-browser/scripts/bootstrap.ps1
index d32b71e..39ce165 100644
--- a/skills/lexmount-browser/scripts/bootstrap.ps1
+++ b/skills/lexmount-browser/scripts/bootstrap.ps1
@@ -1,6 +1,7 @@
 $ErrorActionPreference = "Stop"
-$version = if ($env:LEXMOUNT_BROWSER_CLI_VERSION) { $env:LEXMOUNT_BROWSER_CLI_VERSION } else { "1.1.7" }
-if (-not [Environment]::Is64BitOperatingSystem) { throw "Only 64-bit Windows is supported" }
+$version = if ($env:LEXMOUNT_BROWSER_CLI_VERSION) { $env:LEXMOUNT_BROWSER_CLI_VERSION } else { "1.1.8" }
+$architecture = if ($env:PROCESSOR_ARCHITEW6432) { $env:PROCESSOR_ARCHITEW6432 } else { $env:PROCESSOR_ARCHITECTURE }
+if ($architecture -ne "AMD64") { throw "Only Windows x64 is supported" }
 $asset = "browser-cli-v$version-x86_64-pc-windows-msvc.exe"
 $repo = "https://github.com/lexmount/browser-cli-rs/releases/download/v$version"
 $tmp = Join-Path ([IO.Path]::GetTempPath()) ([Guid]::NewGuid().ToString())
diff --git a/skills/lexmount-browser/scripts/bootstrap.sh b/skills/lexmount-browser/scripts/bootstrap.sh
index ac9348b..9a455cc 100755
--- a/skills/lexmount-browser/scripts/bootstrap.sh
+++ b/skills/lexmount-browser/scripts/bootstrap.sh
@@ -1,7 +1,7 @@
 #!/bin/sh
 set -eu
 
-version="${LEXMOUNT_BROWSER_CLI_VERSION:-1.1.7}"
+version="${LEXMOUNT_BROWSER_CLI_VERSION:-1.1.8}"
 repo="https://github.com/lexmount/browser-cli-rs/releases/download/v${version}"
 case "$(uname -s)-$(uname -m)" in
   Darwin-arm64) target="aarch64-apple-darwin" ;;
diff --git a/skills/lexmount-browser/scripts/doctor.ps1 b/skills/lexmount-browser/scripts/doctor.ps1
index 2e5c182..fc9f34a 100644
--- a/skills/lexmount-browser/scripts/doctor.ps1
+++ b/skills/lexmount-browser/scripts/doctor.ps1
@@ -1,4 +1,9 @@
 $ErrorActionPreference = "Stop"
+$architecture = if ($env:PROCESSOR_ARCHITEW6432) { $env:PROCESSOR_ARCHITEW6432 } else { $env:PROCESSOR_ARCHITECTURE }
+if ($architecture -ne "AMD64") {
+  Write-Output '{"ok":false,"error":"unsupported_platform","message":"This Skill supports Windows x64 through scripts/doctor.ps1 and macOS arm64 through scripts/doctor.sh."}'
+  exit 2
+}
 $skillBinary = Join-Path (Split-Path -Parent $PSScriptRoot) "bin\browser-cli.exe"
 if (Test-Path $skillBinary) { & $skillBinary doctor; exit $LASTEXITCODE }
 Write-Output '{"ok":false,"error":"command_not_found","message":"Skill-local browser-cli.exe is missing. Run scripts/bootstrap.ps1 first."}'
diff --git a/skills/lexmount-browser/scripts/doctor.sh b/skills/lexmount-browser/scripts/doctor.sh
index c634bf9..c0f8882 100755
--- a/skills/lexmount-browser/scripts/doctor.sh
+++ b/skills/lexmount-browser/scripts/doctor.sh
@@ -1,5 +1,9 @@
 #!/bin/sh
 set -eu
+case "$(uname -s)-$(uname -m)" in
+  Darwin-arm64) ;;
+  *) echo '{"ok":false,"error":"unsupported_platform","message":"This Skill supports macOS arm64 through scripts/doctor.sh and Windows x64 through scripts/doctor.ps1."}'; exit 2 ;;
+esac
 skill_dir="$(CDPATH= cd -- "$(dirname -- "$0")/.." && pwd)"
 if [ -x "$skill_dir/bin/browser-cli" ]; then exec "$skill_dir/bin/browser-cli" doctor; fi
 echo '{"ok":false,"error":"command_not_found","message":"Skill-local browser-cli is missing. Run scripts/bootstrap.sh first."}'