diff --git a/.github/workflows/alpha.yml b/.github/workflows/alpha.yml
index 42edf965..7cc87fd5 100644
--- a/.github/workflows/alpha.yml
+++ b/.github/workflows/alpha.yml
@@ -91,19 +91,21 @@ jobs:
           GH_TOKEN: ${{ github.token }}
           GH_REPO: ${{ github.repository }}
           ALPHA_NOTE: ${{ inputs.note }}
+          ALPHA_BRANCH: ${{ github.ref_name }}   # a branch name can hold $( ) and backticks
         run: |
           $ErrorActionPreference = 'Continue'
           $PSNativeCommandUseErrorActionPreference = $false
           $tag  = '${{ steps.ver.outputs.tag }}'
           $exe  = '${{ steps.asset.outputs.path }}'
           $note = $env:ALPHA_NOTE   # data, never spliced into the script
+          $branch = $env:ALPHA_BRANCH
           $body = @"
           **Alpha build - not a release.** Installs over a normal Wind install and shares its
           settings; roll back by running the stable installer from the Latest release.
 
           | | |
           |---|---|
-          | branch | ``${{ github.ref_name }}`` |
+          | branch | ``$branch`` |
           | commit | ``${{ steps.ver.outputs.sha7 }}`` |
           | base version | ``${{ steps.ver.outputs.version }}`` |
           | sha256 | ``${{ steps.asset.outputs.sha256 }}`` |
@@ -138,10 +140,12 @@ jobs:
 
       - name: Summary
         shell: pwsh
+        env:
+          ALPHA_BRANCH: ${{ github.ref_name }}
         run: |
           "## Wind ${{ steps.ver.outputs.alpha }} (pre-release)"        >> $env:GITHUB_STEP_SUMMARY
           ""                                                             >> $env:GITHUB_STEP_SUMMARY
-          "- branch ``${{ github.ref_name }}``"                          >> $env:GITHUB_STEP_SUMMARY
+          "- branch ``$env:ALPHA_BRANCH``"                                >> $env:GITHUB_STEP_SUMMARY
           "- tag ``${{ steps.ver.outputs.tag }}``"                       >> $env:GITHUB_STEP_SUMMARY
           "- sha256 ``${{ steps.asset.outputs.sha256 }}``"               >> $env:GITHUB_STEP_SUMMARY
           "- the stable release keeps the Latest badge; this does not"   >> $env:GITHUB_STEP_SUMMARY
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index cfc722a7..1597b0ee 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -25,6 +25,10 @@ jobs:
         shell: cmd
         working-directory: ui
         run: npm ci
+      - name: Keybind rules, JS half (node --test)
+        shell: cmd
+        working-directory: ui
+        run: npm run test:rules
       - name: Build settings host and UI (WindConfig.exe, ui/dist)
         shell: cmd
         run: build.bat config
diff --git a/docs/architecture/11-build-test-release.md b/docs/architecture/11-build-test-release.md
index 3c631703..e78d39ef 100644
--- a/docs/architecture/11-build-test-release.md
+++ b/docs/architecture/11-build-test-release.md
@@ -30,7 +30,7 @@ headlessly, so the unit tests are the only verification loop that runs everywher
 - The `test` target compiles `tests\*.cpp` with `/DWIND_TESTS` against only the pure sources. The
   authoritative list is the `:test` target in `build.bat`; today it is `transform`,
   `zoom_controller`, `config`, `profiles`, `cursor_mapper`, `lock_detector`, `cursor_lock`,
-  `mouse_ballistics`, `crosshair`, `config_ui/ini_edit`, `logging` and `tray_items`.
+  `mouse_ballistics`, `crosshair`, `config_ui/ini_edit`, `logging`, `tray_items` and `hitch_record`.
 - Header-only pure modules (`engine_pick.h`, `drag_follow.h`, `hdr_scale.h`, `keybind_rules.h`,
   `config_ui/wind_watchdog.h` and others) ride in through their test files.
 - One test file per module (`tests/test_<module>.cpp`). A new pure `.cpp` also goes into the
@@ -38,15 +38,17 @@ headlessly, so the unit tests are the only verification loop that runs everywher
 - Files that straddle the line put their OS half under `#ifndef WIND_TESTS`. `src/config.cpp` is
   the example: `ParseConfig` and `StripUiOnlyKeys` above, `LoadConfig` and the only
   `#include <windows.h>` below.
-- `tests/fixtures/keybind_cases.txt` is shared by the C++ and the JavaScript bind rules.
+- `tests/fixtures/keybind_cases.txt` is shared by the C++ and the JavaScript bind rules. The JS half
+  is `ui/tests/keybind-rules.nodetest.mjs`, run by `npm run test:rules` in `ui/` (`node --test`, no
+  browser) and by CI.
 
-**UI suite.** `ui/tests/` holds 12 Playwright specs, run with `npx playwright test` in `ui/` (the
+**UI suite.** `ui/tests/` holds 11 Playwright specs, run with `npx playwright test` in `ui/` (the
 config starts the Vite server). A fake `window.chrome.webview` answers the host's messages and
 records them in `window.__msgs`. When you add a bridge message to `HandleWebMessage`, extend the
 mock in the same change. Details in [09](09-settings-ui.md).
 
 **CI** (`.github/workflows/build.yml`, on pull requests and pushes to `main`) builds the app and
-runs the doctest suite. It does not run the UI suite; that is a local gate for UI changes.
+runs the doctest suite. It also runs the JS keybind-rule test. The Playwright UI suite is a local gate for UI changes.
 
 ## Local UIAccess deploy
 
diff --git a/installer/app.nsh b/installer/app.nsh
index 2066442a..b0369104 100644
--- a/installer/app.nsh
+++ b/installer/app.nsh
@@ -8,7 +8,9 @@
 
 !include "LogicLib.nsh"
 
-!define WV2_CLIENT "SOFTWARE\WOW6432Node\Microsoft\EdgeUpdate\Clients\{F3017226-FE2A-4295-8BDF-00C3A9A7E4C5}"
+; The machine-wide install is under WOW6432Node; the per-user install is not (no WOW6432Node in HKCU).
+!define WV2_CLIENT_HKLM "SOFTWARE\WOW6432Node\Microsoft\EdgeUpdate\Clients\{F3017226-FE2A-4295-8BDF-00C3A9A7E4C5}"
+!define WV2_CLIENT_HKCU "Software\Microsoft\EdgeUpdate\Clients\{F3017226-FE2A-4295-8BDF-00C3A9A7E4C5}"
 
 ; Wind's own two kernel objects. Both are Local\, i.e. session-scoped, and UAC elevation
 ; stays inside the session, so the elevated installer and the user's Wind see the same
@@ -117,12 +119,14 @@ Var LicenceDir   ; where "Read the full licence" put its copy, empty until then
 ; ---- WebView2 ----------------------------------------------------------------
 ; WindConfig.exe paints an empty shell without the Evergreen runtime. Microsoft's
 ; uninstaller leaves `pv` behind set to "0.0.0.0" rather than deleting it, so a value
-; being present is not proof (src\webview2_probe.h pins that rule and tests it).
+; being present is not proof. src\webview2_probe.h is the tested statement of that rule; NSIS
+; cannot call it, so this macro mirrors it for the two values the uninstaller leaves.
 !macro WIND_ENSURE_WEBVIEW2
   StrCpy $0 ""
-  ReadRegStr $0 HKLM "${WV2_CLIENT}" "pv"
+  ReadRegStr $0 HKLM "${WV2_CLIENT_HKLM}" "pv"
   ${If} $0 == ""
-    ReadRegStr $0 HKCU "${WV2_CLIENT}" "pv"
+  ${OrIf} $0 == "0.0.0.0"
+    ReadRegStr $0 HKCU "${WV2_CLIENT_HKCU}" "pv"
   ${EndIf}
   ${If} $0 == ""
   ${OrIf} $0 == "0.0.0.0"
diff --git a/src/version.h b/src/version.h
index d362638b..dcbea1ba 100644
--- a/src/version.h
+++ b/src/version.h
@@ -4,7 +4,7 @@
 
 #define WIND_VER_MAJOR 0
 #define WIND_VER_MINOR 24
-#define WIND_VER_PATCH 8
+#define WIND_VER_PATCH 9
 
 // String form for logs/snapshot/UI. Keep in sync with the numeric parts above.
-#define WIND_VERSION_STR "0.24.8"
+#define WIND_VERSION_STR "0.24.9"
diff --git a/src/webview2_probe.h b/src/webview2_probe.h
index d8269d23..7e9b5417 100644
--- a/src/webview2_probe.h
+++ b/src/webview2_probe.h
@@ -3,7 +3,9 @@
 // only subtlety is that Microsoft's uninstaller leaves the value behind set to "0.0.0.0"
 // rather than deleting it, so a non-empty value is not proof of presence.
 // WindConfig.exe paints an empty shell without the runtime, which is why this is checked.
-// NO <windows.h>: pure, so the rule is testable.
+// NO <windows.h>: pure, so the rule is testable. Nothing in the C++ binaries calls it: the check
+// that matters runs in the NSIS installer (installer\app.nsh, WIND_ENSURE_WEBVIEW2), which mirrors
+// this rule and cannot include it. Keep the two in step.
 #include <string>
 #include "installer_state.h"
 
diff --git a/tests/fixtures/keybind_cases.txt b/tests/fixtures/keybind_cases.txt
index 60a3a780..7baf8834 100644
--- a/tests/fixtures/keybind_cases.txt
+++ b/tests/fixtures/keybind_cases.txt
@@ -2,7 +2,7 @@
 #   key   <vk hex> <mods> <verdict>      mods: bit 1 Ctrl, 2 Alt, 4 Shift, 8 Win
 #   wheel <mods> <verdict>
 #   click <button> <mods> <verdict>      button: 1/2 side, 3 left, 4 right, 5 middle, 6 wheel up, 7 wheel down
-# Read by tests/test_keybind_rules.cpp (C++ rules) and ui/tests/keybind-rules.spec.js (UI mirror).
+# Read by tests/test_keybind_rules.cpp (C++ rules) and ui/tests/keybind-rules.nodetest.mjs (UI mirror).
 # verdicts: ok never modifier notalone shifttypes altgr system windows needsmod ctrlalone shiftalone
 
 # alone: navigation, arrows, Delete, F-keys, Pause, ScrollLock, numpad are fine
diff --git a/tests/test_keybind_rules.cpp b/tests/test_keybind_rules.cpp
index d7a9e50f..487e24f0 100644
--- a/tests/test_keybind_rules.cpp
+++ b/tests/test_keybind_rules.cpp
@@ -3,11 +3,21 @@
 #include <fstream>
 #include <sstream>
 #include <string>
+#include <vector>
 using namespace wind;
 
 // Runs every case in the shared list (also read by the UI mirror's tests).
 TEST_CASE("keybind safety rules match the shared case list (#285)") {
-    std::ifstream f("tests/fixtures/keybind_cases.txt");
+    // The cwd varies (repo root from build.bat, a build dir elsewhere), so also try the folder
+    // this file sits in, then walk up from the cwd.
+    std::string here = __FILE__;
+    const size_t cut = here.find_last_of("/\\");
+    std::vector<std::string> tries;
+    if (cut != std::string::npos) tries.push_back(here.substr(0, cut) + "/fixtures/keybind_cases.txt");
+    for (const char* up : { "", "../", "../../", "../../../" })
+        tries.push_back(std::string(up) + "tests/fixtures/keybind_cases.txt");
+    std::ifstream f;
+    for (const std::string& p : tries) { f.open(p); if (f.good()) break; f.clear(); }
     REQUIRE(f.good());
     std::string line;
     int cases = 0;
diff --git a/tests/test_transform_model.cpp b/tests/test_mag_transform.cpp
similarity index 100%
rename from tests/test_transform_model.cpp
rename to tests/test_mag_transform.cpp
diff --git a/tests/test_smoke.cpp b/tests/test_smoke.cpp
deleted file mode 100644
index 7690fb96..00000000
--- a/tests/test_smoke.cpp
+++ /dev/null
@@ -1,5 +0,0 @@
-#include "doctest.h"
-
-TEST_CASE("test harness runs") {
-    CHECK(1 + 1 == 2);
-}
diff --git a/tools/installer_check.ps1 b/tools/installer_check.ps1
index 741cfb87..f7ba5f39 100644
--- a/tools/installer_check.ps1
+++ b/tools/installer_check.ps1
@@ -128,6 +128,11 @@ if (-not (Test-Path $setup)) {
             ForEach-Object { [pscustomobject]@{ Store = $s; Raw = $_.RawData } }
     })
 
+    # The installer closes a running Wind/WindTray (that is its job), which would also quit the
+    # developer's own session. Remember what is running and start it again afterwards.
+    $wasRunning = @(Get-Process -Name Wind, WindTray -ErrorAction SilentlyContinue |
+        ForEach-Object { $_.Path } | Where-Object { $_ })
+
     $scratch = Join-Path $env:TEMP 'wind-installer-check'
     if (Test-Path $scratch) { Remove-Item -LiteralPath $scratch -Recurse -Force }
 
@@ -140,89 +145,94 @@ if (-not (Test-Path $setup)) {
     $appData = Join-Path $env:LOCALAPPDATA 'Wind'
     $seeded = $false
     $marker = Join-Path $appData 'installer-check-marker.txt'
-    if (-not (Test-Path $appData)) {
-        New-Item -ItemType Directory -Force $appData | Out-Null
-        Set-Content -LiteralPath $marker -Value 'seeded by tools/installer_check.ps1' -NoNewline
-        $seeded = $true
-    }
+    try {
+        if (-not (Test-Path $appData)) {
+            New-Item -ItemType Directory -Force $appData | Out-Null
+            Set-Content -LiteralPath $marker -Value 'seeded by tools/installer_check.ps1' -NoNewline
+            $seeded = $true
+        }
 
-    # /D must be the last argument and unquoted. That is an NSIS rule, not a typo.
-    Start-Process $setup -ArgumentList '/S', "/D=$scratch" -Wait
-    Check "silent install placed Wind.exe"       { Test-Path (Join-Path $scratch 'Wind.exe') }
-    Check "silent install placed WindConfig.exe" { Test-Path (Join-Path $scratch 'WindConfig.exe') }
-    Check "silent install placed WindTray.exe"   { Test-Path (Join-Path $scratch 'WindTray.exe') }
-    Check "silent install placed ui\dist"        { Test-Path (Join-Path $scratch 'ui\dist\index.html') }
-    # Local signing (issue #261): only when this build packed the uiAccess variant.
-    if (Test-Path (Join-Path $root 'WindUA.exe')) {
-        $sig = Get-AuthenticodeSignature (Join-Path $scratch 'Wind.exe')
-        Check "local signing: Wind.exe signature is Valid" { $sig.Status -eq 'Valid' }
-        Check "local signing: signed by CN=Wind Local Signing" { $sig.SignerCertificate.Subject -eq 'CN=Wind Local Signing' }
-        Check "local signing: WindTray.exe signature is Valid" {
-            (Get-AuthenticodeSignature (Join-Path $scratch 'WindTray.exe')).Status -eq 'Valid'
+        # /D must be the last argument and unquoted. That is an NSIS rule, not a typo.
+        Start-Process $setup -ArgumentList '/S', "/D=$scratch" -Wait
+        Check "silent install placed Wind.exe"       { Test-Path (Join-Path $scratch 'Wind.exe') }
+        Check "silent install placed WindConfig.exe" { Test-Path (Join-Path $scratch 'WindConfig.exe') }
+        Check "silent install placed WindTray.exe"   { Test-Path (Join-Path $scratch 'WindTray.exe') }
+        Check "silent install placed ui\dist"        { Test-Path (Join-Path $scratch 'ui\dist\index.html') }
+        # Local signing (issue #261): only when this build packed the uiAccess variant.
+        if (Test-Path (Join-Path $root 'WindUA.exe')) {
+            $sig = Get-AuthenticodeSignature (Join-Path $scratch 'Wind.exe')
+            Check "local signing: Wind.exe signature is Valid" { $sig.Status -eq 'Valid' }
+            Check "local signing: signed by CN=Wind Local Signing" { $sig.SignerCertificate.Subject -eq 'CN=Wind Local Signing' }
+            Check "local signing: WindTray.exe signature is Valid" {
+                (Get-AuthenticodeSignature (Join-Path $scratch 'WindTray.exe')).Status -eq 'Valid'
+            }
+            Check "local signing: the signing key is gone" {
+                -not (Get-ChildItem Cert:\LocalMachine\My | Where-Object Subject -eq 'CN=Wind Local Signing')
+            }
+            Check "local signing: exactly one trusted root" {
+                @(Get-ChildItem Cert:\LocalMachine\Root | Where-Object Subject -eq 'CN=Wind Local Signing').Count -eq 1
+            }
         }
-        Check "local signing: the signing key is gone" {
-            -not (Get-ChildItem Cert:\LocalMachine\My | Where-Object Subject -eq 'CN=Wind Local Signing')
+        Check "ARP DisplayVersion is $version" {
+            (Get-ItemProperty $ARP -ErrorAction SilentlyContinue).DisplayVersion -eq $version
         }
-        Check "local signing: exactly one trusted root" {
-            @(Get-ChildItem Cert:\LocalMachine\Root | Where-Object Subject -eq 'CN=Wind Local Signing').Count -eq 1
+        Check "Run value points at the install" {
+            (Get-ItemProperty $RUN -ErrorAction SilentlyContinue).Wind -match 'Wind\.exe'
         }
-    }
-    Check "ARP DisplayVersion is $version" {
-        (Get-ItemProperty $ARP -ErrorAction SilentlyContinue).DisplayVersion -eq $version
-    }
-    Check "Run value points at the install" {
-        (Get-ItemProperty $RUN -ErrorAction SilentlyContinue).Wind -match 'Wind\.exe'
-    }
 
-    $uninst = Join-Path $scratch 'Uninstall.exe'
-    if (Test-Path $uninst) {
-        # _?= keeps the uninstaller in place so -Wait actually waits for it. Without it NSIS
-        # copies itself to TEMP and returns immediately. The cost is that Uninstall.exe
-        # cannot delete itself, which is why it is not checked for below.
-        Start-Process $uninst -ArgumentList '/S', ('_?=' + $scratch) -Wait
-        Start-Sleep -Milliseconds 1200
-        Check "uninstall removed Wind.exe"    { -not (Test-Path (Join-Path $scratch 'Wind.exe')) }
-        Check "uninstall removed WindTray.exe" { -not (Test-Path (Join-Path $scratch 'WindTray.exe')) }
-        Check "uninstall removed ui\dist"     { -not (Test-Path (Join-Path $scratch 'ui')) }
-        Check "uninstall removed the ARP key" { $null -eq (Get-ItemProperty $ARP -ErrorAction SilentlyContinue) }
-        Check "uninstall removed every Wind Local Signing root" {
-            -not (Get-ChildItem Cert:\LocalMachine\Root, Cert:\LocalMachine\TrustedPublisher |
-                  Where-Object Subject -eq 'CN=Wind Local Signing')
-        }
-        Check "uninstall removed the Run value" {
-            $null -eq (Get-ItemProperty $RUN -ErrorAction SilentlyContinue).Wind
+        $uninst = Join-Path $scratch 'Uninstall.exe'
+        if (Test-Path $uninst) {
+            # _?= keeps the uninstaller in place so -Wait actually waits for it. Without it NSIS
+            # copies itself to TEMP and returns immediately. The cost is that Uninstall.exe
+            # cannot delete itself, which is why it is not checked for below.
+            Start-Process $uninst -ArgumentList '/S', ('_?=' + $scratch) -Wait
+            Start-Sleep -Milliseconds 1200
+            Check "uninstall removed Wind.exe"    { -not (Test-Path (Join-Path $scratch 'Wind.exe')) }
+            Check "uninstall removed WindTray.exe" { -not (Test-Path (Join-Path $scratch 'WindTray.exe')) }
+            Check "uninstall removed ui\dist"     { -not (Test-Path (Join-Path $scratch 'ui')) }
+            Check "uninstall removed the ARP key" { $null -eq (Get-ItemProperty $ARP -ErrorAction SilentlyContinue) }
+            Check "uninstall removed every Wind Local Signing root" {
+                -not (Get-ChildItem Cert:\LocalMachine\Root, Cert:\LocalMachine\TrustedPublisher |
+                      Where-Object Subject -eq 'CN=Wind Local Signing')
+            }
+            Check "uninstall removed the Run value" {
+                $null -eq (Get-ItemProperty $RUN -ErrorAction SilentlyContinue).Wind
+            }
+            # A silent uninstall answers the keep-or-delete prompt with /SD IDNO, so the settings
+            # must still be there. Deleting them silently would be the worst bug in the installer.
+            Check "uninstall kept %LOCALAPPDATA%\Wind" { Test-Path $appData }
+            if ($seeded) { Check "uninstall kept the seeded file" { Test-Path $marker } }
+        } else {
+            Check "uninstaller was written" { $false }
         }
-        # A silent uninstall answers the keep-or-delete prompt with /SD IDNO, so the settings
-        # must still be there. Deleting them silently would be the worst bug in the installer.
-        Check "uninstall kept %LOCALAPPDATA%\Wind" { Test-Path $appData }
-        if ($seeded) { Check "uninstall kept the seeded file" { Test-Path $marker } }
-    } else {
-        Check "uninstaller was written" { $false }
-    }
-
-    # Take back only what this script created; a real settings folder is never touched.
-    if ($seeded) {
-        Remove-Item -LiteralPath $marker -Force -ErrorAction SilentlyContinue
-        if (-not (Get-ChildItem $appData -Force -ErrorAction SilentlyContinue)) {
-            Remove-Item -LiteralPath $appData -Force -ErrorAction SilentlyContinue
+    } finally {
+        # Take back only what this script created; a real settings folder is never touched.
+        if ($seeded) {
+            Remove-Item -LiteralPath $marker -Force -ErrorAction SilentlyContinue
+            if (-not (Get-ChildItem $appData -Force -ErrorAction SilentlyContinue)) {
+                Remove-Item -LiteralPath $appData -Force -ErrorAction SilentlyContinue
+            }
         }
-    }
 
-    if (Test-Path $scratch) { Remove-Item -LiteralPath $scratch -Recurse -Force -ErrorAction SilentlyContinue }
+        if (Test-Path $scratch) { Remove-Item -LiteralPath $scratch -Recurse -Force -ErrorAction SilentlyContinue }
 
-    # Put back whatever was here before the smoke test.
-    if ($savedArp) {
-        New-Item -Path $ARP -Force | Out-Null
-        foreach ($n in 'DisplayName','DisplayVersion','Publisher','DisplayIcon','InstallLocation','UninstallString') {
-            if ($null -ne $savedArp.$n) { New-ItemProperty $ARP -Name $n -Value $savedArp.$n -PropertyType String -Force | Out-Null }
+        # Put back whatever was here before the smoke test.
+        if ($savedArp) {
+            New-Item -Path $ARP -Force | Out-Null
+            foreach ($n in 'DisplayName','DisplayVersion','Publisher','DisplayIcon','InstallLocation','UninstallString') {
+                if ($null -ne $savedArp.$n) { New-ItemProperty $ARP -Name $n -Value $savedArp.$n -PropertyType String -Force | Out-Null }
+            }
+        }
+        if ($savedRun) { New-ItemProperty $RUN -Name 'Wind' -Value $savedRun -PropertyType String -Force | Out-Null }
+        foreach ($r in $savedRoots) {
+            $st = New-Object System.Security.Cryptography.X509Certificates.X509Store($r.Store, 'LocalMachine')
+            $st.Open('ReadWrite')
+            $st.Add([System.Security.Cryptography.X509Certificates.X509Certificate2]::new([byte[]]$r.Raw))
+            $st.Close()
+        }
+        foreach ($exe in $wasRunning) {
+            if (Test-Path -LiteralPath $exe) { Start-Process -FilePath $exe -ErrorAction SilentlyContinue }
         }
-    }
-    if ($savedRun) { New-ItemProperty $RUN -Name 'Wind' -Value $savedRun -PropertyType String -Force | Out-Null }
-    foreach ($r in $savedRoots) {
-        $st = New-Object System.Security.Cryptography.X509Certificates.X509Store($r.Store, 'LocalMachine')
-        $st.Open('ReadWrite')
-        $st.Add([System.Security.Cryptography.X509Certificates.X509Certificate2]::new([byte[]]$r.Raw))
-        $st.Close()
     }
 }
 
diff --git a/ui/package.json b/ui/package.json
index 564d9667..758dab22 100644
--- a/ui/package.json
+++ b/ui/package.json
@@ -2,7 +2,7 @@
   "name": "wind-config-ui",
   "private": true,
   "type": "module",
-  "scripts": { "dev": "vite", "build": "vite build", "test": "playwright test" },
+  "scripts": { "dev": "vite", "build": "vite build", "test": "playwright test", "test:rules": "node --test tests/keybind-rules.nodetest.mjs" },
   "devDependencies": {
     "@playwright/test": "^1.44.0",
     "@sveltejs/vite-plugin-svelte": "^5.1.1",
diff --git a/ui/src/lib/keybindRules.js b/ui/src/lib/keybindRules.js
index cf8573e1..58a46100 100644
--- a/ui/src/lib/keybindRules.js
+++ b/ui/src/lib/keybindRules.js
@@ -1,5 +1,5 @@
 // Mirror of src/keybind_rules.h (issue #285). Both are tested against tests/fixtures/keybind_cases.txt
-// (ui/tests/keybind-rules.spec.js and tests/test_keybind_rules.cpp), so a rule changed in one place
+// (ui/tests/keybind-rules.nodetest.mjs and tests/test_keybind_rules.cpp), so a rule changed in one place
 // fails the other's tests until it is changed there too.
 const MOD = { ctrl: 1, alt: 2, shift: 4, win: 8 };
 
diff --git a/ui/tests/keybind-rules.spec.js b/ui/tests/keybind-rules.nodetest.mjs
similarity index 80%
rename from ui/tests/keybind-rules.spec.js
rename to ui/tests/keybind-rules.nodetest.mjs
index ea250ed4..c377c312 100644
--- a/ui/tests/keybind-rules.spec.js
+++ b/ui/tests/keybind-rules.nodetest.mjs
@@ -1,9 +1,11 @@
-import { test, expect } from '@playwright/test';
+import test from 'node:test';
+import assert from 'node:assert/strict';
 import { readFileSync } from 'node:fs';
 import { fileURLToPath } from 'node:url';
 import { dirname, join } from 'node:path';
 import { checkKeyBind, checkWheelBind, checkClickBind } from '../src/lib/keybindRules.js';
 
+// Plain node:test, no browser: run with `npm run test:rules` (CI runs it too).
 // The UI mirror must agree with the C++ rules on every shared case (issue #285).
 test('UI keybind rules match the shared case list', () => {
   const here = dirname(fileURLToPath(import.meta.url));
@@ -17,8 +19,8 @@ test('UI keybind rules match the shared case list', () => {
     else if (p[0] === 'wheel') got = checkWheelBind(Number(p[1]));
     else if (p[0] === 'click') got = checkClickBind(Number(p[1]), Number(p[2]));
     const want = p[p.length - 1];
-    expect(got, line).toBe(want);
+    assert.equal(got, want, line);
     n++;
   }
-  expect(n).toBeGreaterThan(90);
+  assert.ok(n > 90, `only ${n} cases read`);
 });