diff --git a/.claude/settings.json b/.claude/settings.json
index 6500e609d..44376689b 100644
--- a/.claude/settings.json
+++ b/.claude/settings.json
@@ -7,7 +7,7 @@
         "hooks": [
           {
             "type": "command",
-            "command": "[ ! -f \"${CLAUDE_PROJECT_DIR}/.claude/skills/impeccable/scripts/hook.mjs\" ] || ! { node -e \"import('fs')\" 2>/dev/null || { D=\"$HOME/.impeccable\"; [ -f \"$D/node-unsupported\" ] || { mkdir -p \"$D\" 2>/dev/null && : > \"$D/node-unsupported\" 2>/dev/null && printf '%s' '{\"systemMessage\":\"The impeccable design hook is not running: no Node 22 or newer on PATH. Install one, or remove the impeccable hook from your harness settings.\"}'; }; exit 0; }; } || node \"${CLAUDE_PROJECT_DIR}/.claude/skills/impeccable/scripts/hook.mjs\"",
+            "command": "[ ! -f \"${CLAUDE_PROJECT_DIR}/.claude/skills/impeccable/scripts/hook.mjs\" ] || ! { node -e \"import('node:fs').catch(()=>process.exit(1))\" 2>/dev/null || { D=\"$HOME/.impeccable\"; [ -f \"$D/node-unsupported\" ] || { mkdir -p \"$D\" 2>/dev/null && : > \"$D/node-unsupported\" 2>/dev/null && printf '%s' '{\"systemMessage\":\"The impeccable design hook is not running: no Node 22 or newer on PATH. Install one, or remove the impeccable hook from your harness settings.\"}'; }; exit 0; }; } || node \"${CLAUDE_PROJECT_DIR}/.claude/skills/impeccable/scripts/hook.mjs\"",
             "timeout": 5,
             "statusMessage": "Checking UI changes"
           }
@@ -19,7 +19,7 @@
         "hooks": [
           {
             "type": "command",
-            "command": "[ ! -f \"${CLAUDE_PROJECT_DIR}/.claude/skills/impeccable/scripts/hook.mjs\" ] || ! { node -e \"import('fs')\" 2>/dev/null || { D=\"$HOME/.impeccable\"; [ -f \"$D/node-unsupported\" ] || { mkdir -p \"$D\" 2>/dev/null && : > \"$D/node-unsupported\" 2>/dev/null && printf '%s' '{\"systemMessage\":\"The impeccable design hook is not running: no Node 22 or newer on PATH. Install one, or remove the impeccable hook from your harness settings.\"}'; }; exit 0; }; } || node \"${CLAUDE_PROJECT_DIR}/.claude/skills/impeccable/scripts/hook.mjs\"",
+            "command": "[ ! -f \"${CLAUDE_PROJECT_DIR}/.claude/skills/impeccable/scripts/hook.mjs\" ] || ! { node -e \"import('node:fs').catch(()=>process.exit(1))\" 2>/dev/null || { D=\"$HOME/.impeccable\"; [ -f \"$D/node-unsupported\" ] || { mkdir -p \"$D\" 2>/dev/null && : > \"$D/node-unsupported\" 2>/dev/null && printf '%s' '{\"systemMessage\":\"The impeccable design hook is not running: no Node 22 or newer on PATH. Install one, or remove the impeccable hook from your harness settings.\"}'; }; exit 0; }; } || node \"${CLAUDE_PROJECT_DIR}/.claude/skills/impeccable/scripts/hook.mjs\"",
             "timeout": 30,
             "statusMessage": "Design deep pass"
           }
diff --git a/.codex/hooks.json b/.codex/hooks.json
index d7cd1b798..000824e04 100644
--- a/.codex/hooks.json
+++ b/.codex/hooks.json
@@ -6,7 +6,7 @@
         "hooks": [
           {
             "type": "command",
-            "command": "[ ! -f \".codex/skills/impeccable/scripts/hook.mjs\" ] || ! { node -e \"import('fs')\" 2>/dev/null || { D=\"$HOME/.impeccable\"; [ -f \"$D/node-unsupported\" ] || { mkdir -p \"$D\" 2>/dev/null && : > \"$D/node-unsupported\" 2>/dev/null && printf '%s' '{\"systemMessage\":\"The impeccable design hook is not running: no Node 22 or newer on PATH. Install one, or remove the impeccable hook from your harness settings.\"}'; }; exit 0; }; } || node \".codex/skills/impeccable/scripts/hook.mjs\"",
+            "command": "[ ! -f \".codex/skills/impeccable/scripts/hook.mjs\" ] || ! { node -e \"import('node:fs').catch(()=>process.exit(1))\" 2>/dev/null || { D=\"$HOME/.impeccable\"; [ -f \"$D/node-unsupported\" ] || { mkdir -p \"$D\" 2>/dev/null && : > \"$D/node-unsupported\" 2>/dev/null && printf '%s' '{\"systemMessage\":\"The impeccable design hook is not running: no Node 22 or newer on PATH. Install one, or remove the impeccable hook from your harness settings.\"}'; }; exit 0; }; } || node \".codex/skills/impeccable/scripts/hook.mjs\"",
             "timeout": 5,
             "statusMessage": "Checking UI changes"
           }
@@ -18,7 +18,7 @@
         "hooks": [
           {
             "type": "command",
-            "command": "[ ! -f \".codex/skills/impeccable/scripts/hook.mjs\" ] || ! { node -e \"import('fs')\" 2>/dev/null || { D=\"$HOME/.impeccable\"; [ -f \"$D/node-unsupported\" ] || { mkdir -p \"$D\" 2>/dev/null && : > \"$D/node-unsupported\" 2>/dev/null && printf '%s' '{\"systemMessage\":\"The impeccable design hook is not running: no Node 22 or newer on PATH. Install one, or remove the impeccable hook from your harness settings.\"}'; }; exit 0; }; } || node \".codex/skills/impeccable/scripts/hook.mjs\"",
+            "command": "[ ! -f \".codex/skills/impeccable/scripts/hook.mjs\" ] || ! { node -e \"import('node:fs').catch(()=>process.exit(1))\" 2>/dev/null || { D=\"$HOME/.impeccable\"; [ -f \"$D/node-unsupported\" ] || { mkdir -p \"$D\" 2>/dev/null && : > \"$D/node-unsupported\" 2>/dev/null && printf '%s' '{\"systemMessage\":\"The impeccable design hook is not running: no Node 22 or newer on PATH. Install one, or remove the impeccable hook from your harness settings.\"}'; }; exit 0; }; } || node \".codex/skills/impeccable/scripts/hook.mjs\"",
             "timeout": 30,
             "statusMessage": "Design deep pass"
           }
diff --git a/.cursor/hooks.json b/.cursor/hooks.json
index c7dc57cea..5c8616a5f 100644
--- a/.cursor/hooks.json
+++ b/.cursor/hooks.json
@@ -3,7 +3,7 @@
   "hooks": {
     "preToolUse": [
       {
-        "command": "[ ! -f \".cursor/skills/impeccable/scripts/hook-before-edit.mjs\" ] || ! node -e \"import('fs')\" 2>/dev/null || node \".cursor/skills/impeccable/scripts/hook-before-edit.mjs\"",
+        "command": "[ ! -f \".cursor/skills/impeccable/scripts/hook-before-edit.mjs\" ] || ! node -e \"import('node:fs').catch(()=>process.exit(1))\" 2>/dev/null || node \".cursor/skills/impeccable/scripts/hook-before-edit.mjs\"",
         "timeout": 5
       }
     ]
diff --git a/.github/hooks/impeccable.json b/.github/hooks/impeccable.json
index a909ad43b..c51a954ac 100644
--- a/.github/hooks/impeccable.json
+++ b/.github/hooks/impeccable.json
@@ -5,7 +5,7 @@
       {
         "type": "command",
         "matcher": "edit|create|apply_patch",
-        "bash": "[ ! -f \"$(git rev-parse --show-toplevel)/.github/skills/impeccable/scripts/hook.mjs\" ] || ! node -e \"import('fs')\" 2>/dev/null || node \"$(git rev-parse --show-toplevel)/.github/skills/impeccable/scripts/hook.mjs\"",
+        "bash": "[ ! -f \"$(git rev-parse --show-toplevel)/.github/skills/impeccable/scripts/hook.mjs\" ] || ! node -e \"import('node:fs').catch(()=>process.exit(1))\" 2>/dev/null || node \"$(git rev-parse --show-toplevel)/.github/skills/impeccable/scripts/hook.mjs\"",
         "timeoutSec": 5
       }
     ]
diff --git a/.grok/hooks/impeccable.json b/.grok/hooks/impeccable.json
index 48b80bf30..3cb2f24ed 100644
--- a/.grok/hooks/impeccable.json
+++ b/.grok/hooks/impeccable.json
@@ -6,7 +6,7 @@
         "hooks": [
           {
             "type": "command",
-            "command": "[ ! -f \".grok/skills/impeccable/scripts/hook.mjs\" ] || ! node -e \"import('fs')\" 2>/dev/null || node \".grok/skills/impeccable/scripts/hook.mjs\"",
+            "command": "[ ! -f \".grok/skills/impeccable/scripts/hook.mjs\" ] || ! node -e \"import('node:fs').catch(()=>process.exit(1))\" 2>/dev/null || node \".grok/skills/impeccable/scripts/hook.mjs\"",
             "timeout": 5,
             "statusMessage": "Checking UI changes"
           }
@@ -18,7 +18,7 @@
         "hooks": [
           {
             "type": "command",
-            "command": "[ ! -f \".grok/skills/impeccable/scripts/hook.mjs\" ] || ! node -e \"import('fs')\" 2>/dev/null || node \".grok/skills/impeccable/scripts/hook.mjs\"",
+            "command": "[ ! -f \".grok/skills/impeccable/scripts/hook.mjs\" ] || ! node -e \"import('node:fs').catch(()=>process.exit(1))\" 2>/dev/null || node \".grok/skills/impeccable/scripts/hook.mjs\"",
             "timeout": 30,
             "statusMessage": "Design deep pass"
           }
diff --git a/plugin/hooks/hooks.json b/plugin/hooks/hooks.json
index 772012c02..501410231 100644
--- a/plugin/hooks/hooks.json
+++ b/plugin/hooks/hooks.json
@@ -6,7 +6,7 @@
         "hooks": [
           {
             "type": "command",
-            "command": "[ ! -f \"${CLAUDE_PLUGIN_ROOT}/skills/impeccable/scripts/hook.mjs\" ] || ! { node -e \"import('fs')\" 2>/dev/null || { D=\"$HOME/.impeccable\"; [ -f \"$D/node-unsupported\" ] || { mkdir -p \"$D\" 2>/dev/null && : > \"$D/node-unsupported\" 2>/dev/null && printf '%s' '{\"systemMessage\":\"The impeccable design hook is not running: no Node 22 or newer on PATH. Install one, or remove the impeccable hook from your harness settings.\"}'; }; exit 0; }; } || node \"${CLAUDE_PLUGIN_ROOT}/skills/impeccable/scripts/hook.mjs\"",
+            "command": "[ ! -f \"${CLAUDE_PLUGIN_ROOT}/skills/impeccable/scripts/hook.mjs\" ] || ! { node -e \"import('node:fs').catch(()=>process.exit(1))\" 2>/dev/null || { D=\"$HOME/.impeccable\"; [ -f \"$D/node-unsupported\" ] || { mkdir -p \"$D\" 2>/dev/null && : > \"$D/node-unsupported\" 2>/dev/null && printf '%s' '{\"systemMessage\":\"The impeccable design hook is not running: no Node 22 or newer on PATH. Install one, or remove the impeccable hook from your harness settings.\"}'; }; exit 0; }; } || node \"${CLAUDE_PLUGIN_ROOT}/skills/impeccable/scripts/hook.mjs\"",
             "timeout": 5,
             "statusMessage": "Checking UI changes"
           }
@@ -18,7 +18,7 @@
         "hooks": [
           {
             "type": "command",
-            "command": "[ ! -f \"${CLAUDE_PLUGIN_ROOT}/skills/impeccable/scripts/hook.mjs\" ] || ! { node -e \"import('fs')\" 2>/dev/null || { D=\"$HOME/.impeccable\"; [ -f \"$D/node-unsupported\" ] || { mkdir -p \"$D\" 2>/dev/null && : > \"$D/node-unsupported\" 2>/dev/null && printf '%s' '{\"systemMessage\":\"The impeccable design hook is not running: no Node 22 or newer on PATH. Install one, or remove the impeccable hook from your harness settings.\"}'; }; exit 0; }; } || node \"${CLAUDE_PLUGIN_ROOT}/skills/impeccable/scripts/hook.mjs\"",
+            "command": "[ ! -f \"${CLAUDE_PLUGIN_ROOT}/skills/impeccable/scripts/hook.mjs\" ] || ! { node -e \"import('node:fs').catch(()=>process.exit(1))\" 2>/dev/null || { D=\"$HOME/.impeccable\"; [ -f \"$D/node-unsupported\" ] || { mkdir -p \"$D\" 2>/dev/null && : > \"$D/node-unsupported\" 2>/dev/null && printf '%s' '{\"systemMessage\":\"The impeccable design hook is not running: no Node 22 or newer on PATH. Install one, or remove the impeccable hook from your harness settings.\"}'; }; exit 0; }; } || node \"${CLAUDE_PLUGIN_ROOT}/skills/impeccable/scripts/hook.mjs\"",
             "timeout": 30,
             "statusMessage": "Design deep pass"
           }
diff --git a/scripts/lib/transformers/hooks.js b/scripts/lib/transformers/hooks.js
index f4745f125..52604e348 100644
--- a/scripts/lib/transformers/hooks.js
+++ b/scripts/lib/transformers/hooks.js
@@ -56,7 +56,19 @@ const CLAUDE_PROJECT_HOOK = '${CLAUDE_PROJECT_DIR}/.claude/skills/impeccable/scr
 // or no node at all, kills the hook script while it is still being parsed,
 // before the script's own always-exit-0 contract can run. Nothing written in
 // ESM can report that, the doctor and the sub-commands included, so the command
-// string carries the probe: dynamic import, and no-op at exit 0 when it fails.
+// string carries the probe, and no-ops at exit 0 when it fails.
+//
+// The probe imports `node:fs` rather than `fs` because that is what the hook
+// closure actually imports, and the `node:` scheme needs 14.18: a bare `fs`
+// probe passes on 12 and 13, which then die on the real import. `.catch` with an
+// explicit exit is required, not decoration, because before Node 15 an unhandled
+// rejection is only a warning and the process still exits 0, so a rejected probe
+// would read as a pass. What the probe does NOT do is enforce the engines floor
+// of 22. That is deliberate: it asks whether this runtime can load our code, not
+// whether it is supported, so a 14.18-to-21 runtime that works today keeps
+// working instead of being silently switched off. The notice names 22 because
+// that is the version to install, and it is only ever shown to someone whose
+// runtime already failed the probe.
 //
 // `notice` is the shell that reports the dead runtime to the user, and it is
 // passed in rather than baked in because only some harnesses have a channel for
@@ -78,8 +90,8 @@ const CLAUDE_PROJECT_HOOK = '${CLAUDE_PROJECT_DIR}/.claude/skills/impeccable/scr
 // as quiet there as it was before the probe existed.
 const guardedNode = (hookPath, notice = '') => {
   const probe = notice
-    ? `! { node -e "import('fs')" 2>/dev/null || { ${notice}; exit 0; }; }`
-    : `! node -e "import('fs')" 2>/dev/null`;
+    ? `! { node -e "import('node:fs').catch(()=>process.exit(1))" 2>/dev/null || { ${notice}; exit 0; }; }`
+    : `! node -e "import('node:fs').catch(()=>process.exit(1))" 2>/dev/null`;
   return `[ ! -f "${hookPath}" ] || ${probe} || node "${hookPath}"`;
 };
 // The message says `on PATH` deliberately: the common cause is a hook shell whose