diff --git a/examples/browser/.gitignore b/examples/browser/.gitignore
index 845fb26f..b9470778 100644
--- a/examples/browser/.gitignore
+++ b/examples/browser/.gitignore
@@ -1,5 +1,2 @@
 node_modules/
 dist/
-# Relaxed on purpose: no committed lockfile, so `pnpm install` always resolves
-# the latest published @everruns/bashkit-wasm (see knowledge/operations/maintenance.md).
-pnpm-lock.yaml
diff --git a/examples/browser/README.md b/examples/browser/README.md
index ad75365a..b5217795 100644
--- a/examples/browser/README.md
+++ b/examples/browser/README.md
@@ -7,12 +7,12 @@ A sandboxed Bash interpreter running entirely in the browser via WebAssembly.
 ## Quick Start
 
 ```bash
-pnpm install
+pnpm install --frozen-lockfile
 pnpm start
 ```
 
-Open http://localhost:5173. No Rust toolchain, no build step — `pnpm install`
-pulls the prebuilt wasm.
+Open http://localhost:5173. No Rust toolchain, no build step — pnpm verifies and
+installs the lockfile-pinned prebuilt wasm package.
 
 ## How It Works
 
diff --git a/examples/browser/dependency-security.test.js b/examples/browser/dependency-security.test.js
new file mode 100644
index 00000000..eb655415
--- /dev/null
+++ b/examples/browser/dependency-security.test.js
@@ -0,0 +1,21 @@
+import assert from "node:assert/strict";
+import { existsSync, readFileSync } from "node:fs";
+import test from "node:test";
+
+const packageJson = JSON.parse(
+  readFileSync(new URL("package.json", import.meta.url), "utf8"),
+);
+
+test("dependencies are reproducible", () => {
+  for (const [name, version] of Object.entries({
+    ...packageJson.dependencies,
+    ...packageJson.devDependencies,
+  })) {
+    assert.match(version, /^\d+\.\d+\.\d+$/, `${name} must use an exact version`);
+  }
+
+  assert.ok(
+    existsSync(new URL("pnpm-lock.yaml", import.meta.url)),
+    "pnpm-lock.yaml must be committed",
+  );
+});
diff --git a/examples/browser/package.json b/examples/browser/package.json
index 6b07477f..753243dc 100644
--- a/examples/browser/package.json
+++ b/examples/browser/package.json
@@ -5,14 +5,14 @@
   "scripts": {
     "start": "vite",
     "dev": "vite",
-    "test": "node --test browser-local.test.js",
+    "test": "node --test *.test.js",
     "build": "vite build",
     "preview": "vite preview"
   },
   "dependencies": {
-    "@everruns/bashkit-wasm": "latest"
+    "@everruns/bashkit-wasm": "0.14.3"
   },
   "devDependencies": {
-    "vite": "^6.4.3"
+    "vite": "6.4.3"
   }
 }
diff --git a/examples/browser/pnpm-lock.yaml b/examples/browser/pnpm-lock.yaml
new file mode 100644
index 00000000..a1c80249
--- /dev/null
+++ b/examples/browser/pnpm-lock.yaml
@@ -0,0 +1,663 @@
+lockfileVersion: '9.0'
+
+settings:
+  autoInstallPeers: true
+  excludeLinksFromLockfile: false
+
+importers:
+
+  .:
+    dependencies:
+      '@everruns/bashkit-wasm':
+        specifier: 0.14.3
+        version: 0.14.3
+    devDependencies:
+      vite:
+        specifier: 6.4.3
+        version: 6.4.3
+
+packages:
+
+  '@esbuild/aix-ppc64@0.25.12':
+    resolution: {integrity: sha512-Hhmwd6CInZ3dwpuGTF8fJG6yoWmsToE+vYgD4nytZVxcu1ulHpUQRAB1UJ8+N1Am3Mz4+xOByoQoSZf4D+CpkA==}
+    engines: {node: '>=18'}
+    cpu: [ppc64]
+    os: [aix]
+
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+    engines: {node: '>=18'}
+    cpu: [arm64]
+    os: [android]
+
+  '@esbuild/android-arm@0.25.12':
+    resolution: {integrity: sha512-VJ+sKvNA/GE7Ccacc9Cha7bpS8nyzVv0jdVgwNDaR4gDMC/2TTRc33Ip8qrNYUcpkOHUT5OZ0bUcNNVZQ9RLlg==}
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+    cpu: [x64]
+    os: [sunos]
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+    cpu: [x64]
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+  fdir@6.5.0:
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+  picocolors@1.1.1:
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+  picomatch@4.0.5:
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+  postcss@8.5.22:
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+    engines: {node: ^10 || ^12 || >=14}
+
+  rollup@4.62.2:
+    resolution: {integrity: sha512-RFnrW4lhXA3s3eqHDZvN654g8OTjzRfqpIRJYczCGB6HzphckVAi/Qh4tbPUbRuDi7s1Llv8g/NspLkttY3gTA==}
+    engines: {node: '>=18.0.0', npm: '>=8.0.0'}
+    hasBin: true
+
+  source-map-js@1.2.1:
+    resolution: {integrity: sha512-UXWMKhLOwVKb728IUtQPXxfYU+usdybtUrK/8uGE8CQMvrhOpwvzDBwj0QhSL7MQc7vIsISBG8VQ8+IDQxpfQA==}
+    engines: {node: '>=0.10.0'}
+
+  tinyglobby@0.2.17:
+    resolution: {integrity: sha512-wXR/dYpcqKmfWpEdZjiKJOwCNFndD0DMnrW/cYjVGttEkBfVgcLFHoNrlj47mjOVic9yyNu65alsgF4NQyTa2g==}
+    engines: {node: '>=12.0.0'}
+
+  vite@6.4.3:
+    resolution: {integrity: sha512-NTKlcQjlAK7MlQoyb6LgaqHc8sso/pVyUJYWMws3jg21uTJw/LddqIFPcPqP6PzpgbIcZyKI85sFE4HBrQDA8A==}
+    engines: {node: ^18.0.0 || ^20.0.0 || >=22.0.0}
+    hasBin: true
+    peerDependencies:
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+      jiti: '>=1.21.0'
+      less: '*'
+      lightningcss: ^1.21.0
+      sass: '*'
+      sass-embedded: '*'
+      stylus: '*'
+      sugarss: '*'
+      terser: ^5.16.0
+      tsx: ^4.8.1
+      yaml: ^2.4.2
+    peerDependenciesMeta:
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+        optional: true
+      jiti:
+        optional: true
+      less:
+        optional: true
+      lightningcss:
+        optional: true
+      sass:
+        optional: true
+      sass-embedded:
+        optional: true
+      stylus:
+        optional: true
+      sugarss:
+        optional: true
+      terser:
+        optional: true
+      tsx:
+        optional: true
+      yaml:
+        optional: true
+
+snapshots:
+
+  '@esbuild/aix-ppc64@0.25.12':
+    optional: true
+
+  '@esbuild/android-arm64@0.25.12':
+    optional: true
+
+  '@esbuild/android-arm@0.25.12':
+    optional: true
+
+  '@esbuild/android-x64@0.25.12':
+    optional: true
+
+  '@esbuild/darwin-arm64@0.25.12':
+    optional: true
+
+  '@esbuild/darwin-x64@0.25.12':
+    optional: true
+
+  '@esbuild/freebsd-arm64@0.25.12':
+    optional: true
+
+  '@esbuild/freebsd-x64@0.25.12':
+    optional: true
+
+  '@esbuild/linux-arm64@0.25.12':
+    optional: true
+
+  '@esbuild/linux-arm@0.25.12':
+    optional: true
+
+  '@esbuild/linux-ia32@0.25.12':
+    optional: true
+
+  '@esbuild/linux-loong64@0.25.12':
+    optional: true
+
+  '@esbuild/linux-mips64el@0.25.12':
+    optional: true
+
+  '@esbuild/linux-ppc64@0.25.12':
+    optional: true
+
+  '@esbuild/linux-riscv64@0.25.12':
+    optional: true
+
+  '@esbuild/linux-s390x@0.25.12':
+    optional: true
+
+  '@esbuild/linux-x64@0.25.12':
+    optional: true
+
+  '@esbuild/netbsd-arm64@0.25.12':
+    optional: true
+
+  '@esbuild/netbsd-x64@0.25.12':
+    optional: true
+
+  '@esbuild/openbsd-arm64@0.25.12':
+    optional: true
+
+  '@esbuild/openbsd-x64@0.25.12':
+    optional: true
+
+  '@esbuild/openharmony-arm64@0.25.12':
+    optional: true
+
+  '@esbuild/sunos-x64@0.25.12':
+    optional: true
+
+  '@esbuild/win32-arm64@0.25.12':
+    optional: true
+
+  '@esbuild/win32-ia32@0.25.12':
+    optional: true
+
+  '@esbuild/win32-x64@0.25.12':
+    optional: true
+
+  '@everruns/bashkit-wasm@0.14.3': {}
+
+  '@rollup/rollup-android-arm-eabi@4.62.2':
+    optional: true
+
+  '@rollup/rollup-android-arm64@4.62.2':
+    optional: true
+
+  '@rollup/rollup-darwin-arm64@4.62.2':
+    optional: true
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+  '@rollup/rollup-darwin-x64@4.62.2':
+    optional: true
+
+  '@rollup/rollup-freebsd-arm64@4.62.2':
+    optional: true
+
+  '@rollup/rollup-freebsd-x64@4.62.2':
+    optional: true
+
+  '@rollup/rollup-linux-arm-gnueabihf@4.62.2':
+    optional: true
+
+  '@rollup/rollup-linux-arm-musleabihf@4.62.2':
+    optional: true
+
+  '@rollup/rollup-linux-arm64-gnu@4.62.2':
+    optional: true
+
+  '@rollup/rollup-linux-arm64-musl@4.62.2':
+    optional: true
+
+  '@rollup/rollup-linux-loong64-gnu@4.62.2':
+    optional: true
+
+  '@rollup/rollup-linux-loong64-musl@4.62.2':
+    optional: true
+
+  '@rollup/rollup-linux-ppc64-gnu@4.62.2':
+    optional: true
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+  '@rollup/rollup-linux-ppc64-musl@4.62.2':
+    optional: true
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+  '@rollup/rollup-linux-riscv64-gnu@4.62.2':
+    optional: true
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+  '@rollup/rollup-linux-riscv64-musl@4.62.2':
+    optional: true
+
+  '@rollup/rollup-linux-s390x-gnu@4.62.2':
+    optional: true
+
+  '@rollup/rollup-linux-x64-gnu@4.62.2':
+    optional: true
+
+  '@rollup/rollup-linux-x64-musl@4.62.2':
+    optional: true
+
+  '@rollup/rollup-openbsd-x64@4.62.2':
+    optional: true
+
+  '@rollup/rollup-openharmony-arm64@4.62.2':
+    optional: true
+
+  '@rollup/rollup-win32-arm64-msvc@4.62.2':
+    optional: true
+
+  '@rollup/rollup-win32-ia32-msvc@4.62.2':
+    optional: true
+
+  '@rollup/rollup-win32-x64-gnu@4.62.2':
+    optional: true
+
+  '@rollup/rollup-win32-x64-msvc@4.62.2':
+    optional: true
+
+  '@types/estree@1.0.9': {}
+
+  esbuild@0.25.12:
+    optionalDependencies:
+      '@esbuild/aix-ppc64': 0.25.12
+      '@esbuild/android-arm': 0.25.12
+      '@esbuild/android-arm64': 0.25.12
+      '@esbuild/android-x64': 0.25.12
+      '@esbuild/darwin-arm64': 0.25.12
+      '@esbuild/darwin-x64': 0.25.12
+      '@esbuild/freebsd-arm64': 0.25.12
+      '@esbuild/freebsd-x64': 0.25.12
+      '@esbuild/linux-arm': 0.25.12
+      '@esbuild/linux-arm64': 0.25.12
+      '@esbuild/linux-ia32': 0.25.12
+      '@esbuild/linux-loong64': 0.25.12
+      '@esbuild/linux-mips64el': 0.25.12
+      '@esbuild/linux-ppc64': 0.25.12
+      '@esbuild/linux-riscv64': 0.25.12
+      '@esbuild/linux-s390x': 0.25.12
+      '@esbuild/linux-x64': 0.25.12
+      '@esbuild/netbsd-arm64': 0.25.12
+      '@esbuild/netbsd-x64': 0.25.12
+      '@esbuild/openbsd-arm64': 0.25.12
+      '@esbuild/openbsd-x64': 0.25.12
+      '@esbuild/openharmony-arm64': 0.25.12
+      '@esbuild/sunos-x64': 0.25.12
+      '@esbuild/win32-arm64': 0.25.12
+      '@esbuild/win32-ia32': 0.25.12
+      '@esbuild/win32-x64': 0.25.12
+
+  fdir@6.5.0(picomatch@4.0.5):
+    optionalDependencies:
+      picomatch: 4.0.5
+
+  fsevents@2.3.3:
+    optional: true
+
+  nanoid@3.3.16: {}
+
+  picocolors@1.1.1: {}
+
+  picomatch@4.0.5: {}
+
+  postcss@8.5.22:
+    dependencies:
+      nanoid: 3.3.16
+      picocolors: 1.1.1
+      source-map-js: 1.2.1
+
+  rollup@4.62.2:
+    dependencies:
+      '@types/estree': 1.0.9
+    optionalDependencies:
+      '@rollup/rollup-android-arm-eabi': 4.62.2
+      '@rollup/rollup-android-arm64': 4.62.2
+      '@rollup/rollup-darwin-arm64': 4.62.2
+      '@rollup/rollup-darwin-x64': 4.62.2
+      '@rollup/rollup-freebsd-arm64': 4.62.2
+      '@rollup/rollup-freebsd-x64': 4.62.2
+      '@rollup/rollup-linux-arm-gnueabihf': 4.62.2
+      '@rollup/rollup-linux-arm-musleabihf': 4.62.2
+      '@rollup/rollup-linux-arm64-gnu': 4.62.2
+      '@rollup/rollup-linux-arm64-musl': 4.62.2
+      '@rollup/rollup-linux-loong64-gnu': 4.62.2
+      '@rollup/rollup-linux-loong64-musl': 4.62.2
+      '@rollup/rollup-linux-ppc64-gnu': 4.62.2
+      '@rollup/rollup-linux-ppc64-musl': 4.62.2
+      '@rollup/rollup-linux-riscv64-gnu': 4.62.2
+      '@rollup/rollup-linux-riscv64-musl': 4.62.2
+      '@rollup/rollup-linux-s390x-gnu': 4.62.2
+      '@rollup/rollup-linux-x64-gnu': 4.62.2
+      '@rollup/rollup-linux-x64-musl': 4.62.2
+      '@rollup/rollup-openbsd-x64': 4.62.2
+      '@rollup/rollup-openharmony-arm64': 4.62.2
+      '@rollup/rollup-win32-arm64-msvc': 4.62.2
+      '@rollup/rollup-win32-ia32-msvc': 4.62.2
+      '@rollup/rollup-win32-x64-gnu': 4.62.2
+      '@rollup/rollup-win32-x64-msvc': 4.62.2
+      fsevents: 2.3.3
+
+  source-map-js@1.2.1: {}
+
+  tinyglobby@0.2.17:
+    dependencies:
+      fdir: 6.5.0(picomatch@4.0.5)
+      picomatch: 4.0.5
+
+  vite@6.4.3:
+    dependencies:
+      esbuild: 0.25.12
+      fdir: 6.5.0(picomatch@4.0.5)
+      picomatch: 4.0.5
+      postcss: 8.5.22
+      rollup: 4.62.2
+      tinyglobby: 0.2.17
+    optionalDependencies:
+      fsevents: 2.3.3
diff --git a/knowledge/operations/maintenance.md b/knowledge/operations/maintenance.md
index ed5fccc5..7e2c2593 100644
--- a/knowledge/operations/maintenance.md
+++ b/knowledge/operations/maintenance.md
@@ -88,14 +88,15 @@ dependency rot, or security gaps ship in a release.
 - Feature-gated examples work (python, git)
 - Python agent examples run end-to-end
 - Code examples in docs/rustdoc still accurate
-- `examples/browser` tracks the latest published `@everruns/bashkit-wasm`
-  (relaxed dep, no committed lockfile): run `pnpm install && pnpm start`, load
+- `examples/browser` uses exact dependency versions and a committed lockfile:
+  run `pnpm install --frozen-lockfile && pnpm start`, load
   the page, and confirm it runs a plain command, a pipe through `jq`, **and a
   subshell** (`bash /home/user/demo.sh`). The subshell path exercises the wasm
   child-shell parse that a top-level command does not — the smoke suite in
   `crates/bashkit-wasm/__test__/` covers the same ground headlessly. If the
   published package lags a fix the example depends on, hold the example until
-  the next `bashkit-wasm` release rather than pinning to an old version.
+  the next `bashkit-wasm` release, then review and update both the dependency
+  pin and lockfile.
 
 ### Specs