diff --git a/.github/workflows/pr.yml b/.github/workflows/pr.yml
index 469a4c9f..a952b56b 100644
--- a/.github/workflows/pr.yml
+++ b/.github/workflows/pr.yml
@@ -71,6 +71,8 @@ jobs:
       # satisfying each package's required peer dependencies (e.g. valibot ^1.0.0 → 1.0.0) to catch
       # use of features they lack. Optional peers (i.e. TypeScript) are covered by their own matrix.
       - name: Install Lowest Peer Dependencies
+        # Explicit bash adds pipefail, so a failing `npm view` fails the step instead of being piped onward
+        shell: bash
         run: |
           {
             echo "### Lowest Peer Dependencies"
@@ -83,7 +85,8 @@ jobs:
             name="$(jq -r '.name' "$manifest")"
             specifiers=()
             while IFS=$'\t' read -r peer range; do
-              version="$(npm view "$peer@$range" version --json | jq -r 'if type == "array" then .[] else . end' | sort -V | head -n 1)"
+              # --prefix keeps npm from reading the root package.json, whose devEngines (pnpm) npm rejects
+              version="$(npm view "$peer@$range" version --json --prefix "$RUNNER_TEMP" | jq -r 'if type == "array" then .[] else . end' | sort -V | head -n 1)"
               if [[ -z "$version" ]]; then
                 echo "::error file=$manifest::No published version of $peer satisfies $range."
                 exit 1
diff --git a/.nvmrc b/.nvmrc
deleted file mode 100644
index 7baf24be..00000000
--- a/.nvmrc
+++ /dev/null
@@ -1 +0,0 @@
-24.21.0
\ No newline at end of file
diff --git a/mise.toml b/mise.toml
index 157c1568..6a7e1ac3 100644
--- a/mise.toml
+++ b/mise.toml
@@ -1,2 +1,2 @@
 [settings]
-idiomatic_version_file_enable_tools = ["node"]
+idiomatic_version_file_enable_tools = ["node", "pnpm"]
diff --git a/package.json b/package.json
index 0d489b3c..374d2c96 100644
--- a/package.json
+++ b/package.json
@@ -27,5 +27,16 @@
     "typescript": "7.0.2",
     "vitest": "5.0.3"
   },
-  "packageManager": "pnpm@12.9.1"
+  "devEngines": {
+    "packageManager": {
+      "name": "pnpm",
+      "version": "12.9.1",
+      "onFail": "download"
+    },
+    "runtime": {
+      "name": "node",
+      "version": "^24.21.0",
+      "onFail": "download"
+    }
+  }
 }
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 63521642..56535df6 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -175,6 +175,9 @@ importers:
       '@vitest/coverage-v8':
         specifier: 5.0.3
         version: 5.0.3(vitest@5.0.3)
+      node:
+        specifier: runtime:^24.21.0
+        version: runtime:24.21.0
       oxfmt:
         specifier: 0.72.0
         version: 0.72.0
@@ -1207,6 +1210,138 @@ packages:
     engines: {node: ^10 || ^12 || ^13.7 || ^14 || >=15.0.1}
     hasBin: true
 
+  node@runtime:24.21.0:
+    resolution:
+      type: variations
+      variants:
+        - resolution:
+            archive: tarball
+            bin:
+              node: bin/node
+            integrity: sha256-rseyRkr7mfB4wZywbSAdVDvTsxHLoHEoK84bF8l+WLs=
+            type: binary
+            url: https://nodejs.org/download/release/v24.21.0/node-v24.21.0-aix-ppc64.tar.gz
+          targets:
+            - cpu: ppc64
+              os: aix
+        - resolution:
+            archive: tarball
+            bin:
+              node: bin/node
+            integrity: sha256-vtfupTJeEQjzLOUijd1qXw8IpJnuQqp0Qq6lg3AvYFc=
+            type: binary
+            url: https://nodejs.org/download/release/v24.21.0/node-v24.21.0-darwin-arm64.tar.gz
+          targets:
+            - cpu: arm64
+              os: darwin
+        - resolution:
+            archive: tarball
+            bin:
+              node: bin/node
+            integrity: sha256-FGLLOzBGuBXPjqQ209pFDsGp8R2sflpGsK2lMF1+gJc=
+            type: binary
+            url: https://nodejs.org/download/release/v24.21.0/node-v24.21.0-darwin-x64.tar.gz
+          targets:
+            - cpu: x64
+              os: darwin
+        - resolution:
+            archive: tarball
+            bin:
+              node: bin/node
+            integrity: sha256-ckKCw7Q67JmKqVJzgEZbRdIp4CG1gDX19PYwleq/5dU=
+            type: binary
+            url: https://nodejs.org/download/release/v24.21.0/node-v24.21.0-linux-arm64.tar.gz
+          targets:
+            - cpu: arm64
+              os: linux
+        - resolution:
+            archive: tarball
+            bin:
+              node: bin/node
+            integrity: sha256-UcXVMGbukpILYXg7A7Buy5nzZhFg97Fcp36EdBFaZ7w=
+            type: binary
+            url: https://nodejs.org/download/release/v24.21.0/node-v24.21.0-linux-ppc64le.tar.gz
+          targets:
+            - cpu: ppc64le
+              os: linux
+        - resolution:
+            archive: tarball
+            bin:
+              node: bin/node
+            integrity: sha256-Xy+jdCLgx13jXBaG/lHXgyTywqj+LMI5pB2cAAop2Tg=
+            type: binary
+            url: https://nodejs.org/download/release/v24.21.0/node-v24.21.0-linux-s390x.tar.gz
+          targets:
+            - cpu: s390x
+              os: linux
+        - resolution:
+            archive: tarball
+            bin:
+              node: bin/node
+            integrity: sha256-PWNAX8ZaDS0pdsHwvC/Se7C9ByEkaecFqsPwOuWrTJw=
+            type: binary
+            url: https://nodejs.org/download/release/v24.21.0/node-v24.21.0-linux-x64-musl.tar.gz
+          targets:
+            - cpu: x64
+              os: linux
+              libc: musl
+        - resolution:
+            archive: tarball
+            bin:
+              node: bin/node
+            integrity: sha256-bh24fvWLiBnl1UAu/xU2SRsY7djre+5e94l4duiNxf8=
+            type: binary
+            url: https://nodejs.org/download/release/v24.21.0/node-v24.21.0-linux-x64.tar.gz
+          targets:
+            - cpu: x64
+              os: linux
+        - resolution:
+            archive: zip
+            bin:
+              node: node.exe
+            integrity: sha256-h3mxveHTn41CDjtXqmV7OYka9DTT3kSpGQRM7AZ4WSE=
+            prefix: node-v24.21.0-win-arm64
+            type: binary
+            url: https://nodejs.org/download/release/v24.21.0/node-v24.21.0-win-arm64.zip
+          targets:
+            - cpu: arm64
+              os: win32
+        - resolution:
+            archive: zip
+            bin:
+              node: node.exe
+            integrity: sha256-FY92hbRN5R9sDfHRU1JsvNPhvHOajfxgdyHO913p5UE=
+            prefix: node-v24.21.0-win-x64
+            type: binary
+            url: https://nodejs.org/download/release/v24.21.0/node-v24.21.0-win-x64.zip
+          targets:
+            - cpu: x64
+              os: win32
+        - resolution:
+            archive: tarball
+            bin:
+              node: bin/node
+            integrity: sha256-MEiwgR4VjKDYZytZyDmGF2PhREkpgNjSmzad/uRXR+Q=
+            type: binary
+            url: https://unofficial-builds.nodejs.org/download/release/v24.21.0/node-v24.21.0-linux-arm64-musl.tar.gz
+          targets:
+            - cpu: arm64
+              os: linux
+              libc: musl
+        - resolution:
+            archive: tarball
+            bin:
+              node: bin/node
+            integrity: sha256-AacT402pjntNKjGR7nyj+T3QOE0aLvI8N5shYe5uEzo=
+            type: binary
+            url: https://unofficial-builds.nodejs.org/download/release/v24.21.0/node-v24.21.0-linux-x64-musl.tar.gz
+          targets:
+            - cpu: x64
+              os: linux
+              libc: musl
+    version: 24.21.0
+    hasBin: true
+
   obug@2.2.1:
     resolution: {integrity: sha512-XrsrhT5sybtKI6wakr2SPOlGZWWYbUXZ7a0jT8/QOeAPau+1X/bSegNe5YR75oJmEZQbKningirmGOEJCIk61Q==}
     engines: {node: '>=12.20.0'}
@@ -2048,6 +2183,8 @@ snapshots:
 
   nanoid@3.3.19: {}
 
+  node@runtime:24.21.0: {}
+
   obug@2.2.1: {}
 
   obug@3.0.0: {}