diff --git a/changelog.md b/changelog.md
index 8c610ac..3a7a24f 100644
--- a/changelog.md
+++ b/changelog.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## 2026-03-27 - 3.6.3 - fix(tapbundle_serverside)
+add TapNodeTools cleanup hooks to stop SmartNetwork processes after tests
+
+- replace the exported tapNodeTools singleton with a TapNodeTools class that registers cleanup on the tap instance
+- run registered cleanup functions at the end of tap.start() to prevent lingering background processes from keeping Node.js alive
+- stop SmartNetwork after selecting Chromium runtime ports and update smartnetwork to ^4.5.2
+
 ## 2026-03-27 - 3.6.2 - fix(cli,chromium-runtime)
 clean up long-lived test runner resources after runs to prevent hanging processes
 
diff --git a/package.json b/package.json
index d0e071e..3d011a8 100644
--- a/package.json
+++ b/package.json
@@ -43,7 +43,7 @@
     "@push.rocks/smartjson": "^6.0.0",
     "@push.rocks/smartlog": "^3.2.1",
     "@push.rocks/smartmongo": "^5.1.0",
-    "@push.rocks/smartnetwork": "^4.4.0",
+    "@push.rocks/smartnetwork": "^4.5.2",
     "@push.rocks/smartpath": "^6.0.0",
     "@push.rocks/smartpromise": "^4.2.3",
     "@push.rocks/smartrequest": "^5.0.1",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 5d477f4..65b6dc3 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -51,8 +51,8 @@ importers:
         specifier: ^5.1.0
         version: 5.1.0(socks@2.8.7)
       '@push.rocks/smartnetwork':
-        specifier: ^4.4.0
-        version: 4.4.0
+        specifier: ^4.5.2
+        version: 4.5.2
       '@push.rocks/smartpath':
         specifier: ^6.0.0
         version: 6.0.0
@@ -661,89 +661,105 @@ packages:
     resolution: {integrity: sha512-excjX8DfsIcJ10x1Kzr4RcWe1edC9PquDRRPx3YVCvQv+U5p7Yin2s32ftzikXojb1PIFc/9Mt28/y+iRklkrw==}
     cpu: [arm64]
     os: [linux]
+    libc: [glibc]
 
   '@img/sharp-libvips-linux-arm@1.2.4':
     resolution: {integrity: sha512-bFI7xcKFELdiNCVov8e44Ia4u2byA+l3XtsAj+Q8tfCwO6BQ8iDojYdvoPMqsKDkuoOo+X6HZA0s0q11ANMQ8A==}
     cpu: [arm]
     os: [linux]
+    libc: [glibc]
 
   '@img/sharp-libvips-linux-ppc64@1.2.4':
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     cpu: [ppc64]
     os: [linux]
+    libc: [glibc]
 
   '@img/sharp-libvips-linux-riscv64@1.2.4':
     resolution: {integrity: sha512-oVDbcR4zUC0ce82teubSm+x6ETixtKZBh/qbREIOcI3cULzDyb18Sr/Wcyx7NRQeQzOiHTNbZFF1UwPS2scyGA==}
     cpu: [riscv64]
     os: [linux]
+    libc: [glibc]
 
   '@img/sharp-libvips-linux-s390x@1.2.4':
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     cpu: [s390x]
     os: [linux]
+    libc: [glibc]
 
   '@img/sharp-libvips-linux-x64@1.2.4':
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     cpu: [x64]
     os: [linux]
+    libc: [glibc]
 
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     cpu: [arm64]
     os: [linux]
+    libc: [musl]
 
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     cpu: [x64]
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     engines: {node: ^18.17.0 || ^20.3.0 || >=21.0.0}
     cpu: [arm64]
     os: [linux]
+    libc: [glibc]
 
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     engines: {node: ^18.17.0 || ^20.3.0 || >=21.0.0}
     cpu: [arm]
     os: [linux]
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     engines: {node: ^18.17.0 || ^20.3.0 || >=21.0.0}
     cpu: [ppc64]
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     engines: {node: ^18.17.0 || ^20.3.0 || >=21.0.0}
     cpu: [riscv64]
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     engines: {node: ^18.17.0 || ^20.3.0 || >=21.0.0}
     cpu: [s390x]
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     engines: {node: ^18.17.0 || ^20.3.0 || >=21.0.0}
     cpu: [x64]
     os: [linux]
+    libc: [glibc]
 
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     engines: {node: ^18.17.0 || ^20.3.0 || >=21.0.0}
     cpu: [arm64]
     os: [linux]
+    libc: [musl]
 
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     engines: {node: ^18.17.0 || ^20.3.0 || >=21.0.0}
     cpu: [x64]
     os: [linux]
+    libc: [musl]
 
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     engines: {node: '>=18'}
 
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-
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@@ -1104,8 +1117,8 @@ packages:
   '@push.rocks/smartdelay@3.0.5':
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+  '@push.rocks/smartdns@7.9.0':
+    resolution: {integrity: sha512-1nDUfyXQo6j9HTUfcjE+BLeAv9QZ7WtAsM1V28zIoFdUpjNg/5g382L024H73PHsxh6lSYNhYYmFvWqzFQhXKg==}
 
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@@ -1179,8 +1192,8 @@ packages:
   '@push.rocks/smartmongo@5.1.0':
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-    resolution: {integrity: sha512-OvFtz41cvQ7lcXwaIOhghNUUlNoMxvwKDctbDvMyuZyEH08SpLjhyv2FuKbKL/mgwA/WxakTbohoC8SW7t+kiw==}
+  '@push.rocks/smartnetwork@4.5.2':
+    resolution: {integrity: sha512-lbMMyc2f/WWd5+qzZyF1ynXndjCtasxPWmj/d8GUuis9rDrW7sLIT1PlAPC2F6Qsy4H/K32JrYU+01d/6sWObg==}
 
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@@ -1197,9 +1210,6 @@ packages:
   '@push.rocks/smartpdf@4.2.0':
     resolution: {integrity: sha512-+egzby5QKJGO10MDvWp+N69cJ8i5M354l9ntc+uLRpxuq/FEY9kigpRwMvRYF5qwOBTuGTLqvmvILzlLtboAQg==}
 
-  '@push.rocks/smartping@1.0.8':
-    resolution: {integrity: sha512-Fvx1Db6hSsDOI6pdiCuS9GjtOX8ugx865YQrPg5vK2iw6Qj/srwyXcWLFYt+19WVKtvtWDJIAKbW+q3bXFsCeA==}
-
   '@push.rocks/smartpromise@4.2.3':
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@@ -1325,36 +1335,42 @@ packages:
     engines: {node: ^20.19.0 || >=22.12.0}
     cpu: [arm64]
     os: [linux]
+    libc: [glibc]
 
   '@rolldown/binding-linux-arm64-musl@1.0.0-rc.11':
     resolution: {integrity: sha512-jfndI9tsfm4APzjNt6QdBkYwre5lRPUgHeDHoI7ydKUuJvz3lZeCfMsI56BZj+7BYqiKsJm7cfd/6KYV7ubrBg==}
     engines: {node: ^20.19.0 || >=22.12.0}
     cpu: [arm64]
     os: [linux]
+    libc: [musl]
 
   '@rolldown/binding-linux-ppc64-gnu@1.0.0-rc.11':
     resolution: {integrity: sha512-ZlFgw46NOAGMgcdvdYwAGu2Q+SLFA9LzbJLW+iyMOJyhj5wk6P3KEE9Gct4xWwSzFoPI7JCdYmYMzVtlgQ+zfw==}
     engines: {node: ^20.19.0 || >=22.12.0}
     cpu: [ppc64]
     os: [linux]
+    libc: [glibc]
 
   '@rolldown/binding-linux-s390x-gnu@1.0.0-rc.11':
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     engines: {node: ^20.19.0 || >=22.12.0}
     cpu: [s390x]
     os: [linux]
+    libc: [glibc]
 
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     engines: {node: ^20.19.0 || >=22.12.0}
     cpu: [x64]
     os: [linux]
+    libc: [glibc]
 
   '@rolldown/binding-linux-x64-musl@1.0.0-rc.11':
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     engines: {node: ^20.19.0 || >=22.12.0}
     cpu: [x64]
     os: [linux]
+    libc: [musl]
 
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     cpu: [arm64]
     os: [linux]
+    libc: [glibc]
 
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     cpu: [arm64]
     os: [linux]
+    libc: [musl]
 
   '@rspack/binding-linux-x64-gnu@1.7.10':
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     cpu: [x64]
     os: [linux]
+    libc: [glibc]
 
   '@rspack/binding-linux-x64-musl@1.7.10':
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     cpu: [x64]
     os: [linux]
+    libc: [musl]
 
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-
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-
-  '@types/elliptic@6.4.18':
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-
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-
   '@types/relateurl@0.2.33':
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@@ -1913,6 +1921,10 @@ packages:
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+  balanced-match@4.0.4:
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+    engines: {node: 18 || 20 || >=22}
+
   bare-events@2.8.2:
     resolution: {integrity: sha512-riJjyv1/mHLIPX4RwiK+oW9/4c3TEUeORHKefKAKnZ5kyslbN+HXowtbaVEqt4IMUB7OXlfixcs6gsFeo/jhiQ==}
     peerDependencies:
@@ -1961,9 +1973,6 @@ packages:
   bmp-ts@1.0.9:
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-  bn.js@4.12.2:
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-
   bowser@2.12.1:
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@@ -1973,12 +1982,13 @@ packages:
   brace-expansion@2.0.2:
     resolution: {integrity: sha512-Jt0vHyM+jmUBqojB7E1NIYadt0vI0Qxjxd2TErW94wDz+E2LAm5vKMXXwg6ZZBTHPuUlDgQHKXvjGBdfcF1ZDQ==}
 
+  brace-expansion@5.0.5:
+    resolution: {integrity: sha512-VZznLgtwhn+Mact9tfiwx64fA9erHH/MCXEUfB/0bX/6Fz6ny5EGTXYltMocqg4xFAQZtnO3DHWWXi8RiuN7cQ==}
+    engines: {node: 18 || 20 || >=22}
+
   broadcast-channel@7.2.0:
     resolution: {integrity: sha512-JgraikEriG/TxBUi2W/w2O0jhHjXZUtXAvCZH0Yr3whjxYVgAg0hSe6r/teM+I5H5Q/q6RhyuKdC2pHNlFyepQ==}
 
-  brorand@1.1.0:
-    resolution: {integrity: sha1-EsJe/kCkXjwyPrhnWgoM5XsiNx8=}
-
   bson@6.10.4:
     resolution: {integrity: sha512-WIsKqkSC0ABoBJuT1LEX+2HEvNmNKKgnTAyd0fL8qzK4SH2i9NXg+t08YtdZp/V9IZ33cxe3iV4yM0qg8lMQng==}
     engines: {node: '>=16.20.1'}
@@ -2163,10 +2173,6 @@ packages:
   devtools-protocol@0.0.1581282:
     resolution: {integrity: sha512-nv7iKtNZQshSW2hKzYNr46nM/Cfh5SEvE2oV0/SEGgc9XupIY5ggf84Cz8eJIkBce7S3bmTAauFD6aysMpnqsQ==}
 
-  dns-packet@5.6.1:
-    resolution: {integrity: sha512-l4gcSouhcgIKRvyy99RNVOgxXiicE+2jZoNmaNmZ6JXiGajBOJAesk1OBlJuM5k2c+eudGdLxDqXuPCKIj6kpw==}
-    engines: {node: '>=6'}
-
   dunder-proto@1.0.1:
     resolution: {integrity: sha512-KIN/nDJBQRcXw0MLVhZE9iQHmG68qAVIBg9CqmUYjmQIhgij9U5MFvrqkUL5FbtyyzZuOeOt0zdeRe4UY7ct+A==}
     engines: {node: '>= 0.4'}
@@ -2174,9 +2180,6 @@ packages:
   eastasianwidth@0.2.0:
     resolution: {integrity: sha512-I88TYZWc9XiYHRQ4/3c5rjjfgkjhLyW2luGIheGERbNQ6OY7yTybanSpDXZa8y7VUP9YmDcYa+eyq4ca7iLqWA==}
 
-  elliptic@6.6.1:
-    resolution: {integrity: sha512-RaddvvMatK2LJHqFJ+YA4WysVN5Ita9E35botqIYspQ4TkRAlCicdzKOjlyv/1Za5RyTNn7di//eEV0uTAfe3g==}
-
   emoji-regex@8.0.0:
     resolution: {integrity: sha512-MSjYzcWNOA0ewAHpz0MxpYFvwg6yjy1NG3xteoqz644VCo/RPgnr1/GGt+ic3iJTzQ8Eu3TdM14SawnVUmGE6A==}
 
@@ -2439,9 +2442,6 @@ packages:
     resolution: {integrity: sha512-NqADB8VjPFLM2V0VvHUewwwsw0ZWBaIdgo+ieHtK3hasLz4qeCRjYcqfB6AQrBggRKppKF8L52/VqdVsO47Dlw==}
     engines: {node: '>= 0.4'}
 
-  hash.js@1.1.7:
-    resolution: {integrity: sha512-taOaskGt4z4SOANNseOviYDvjEJinIkRgmp7LbKP2YTTmVxWBl87s/uzK9r+44BclBSp2X7K1hqeNfz9JbBeXA==}
-
   hasown@2.0.2:
     resolution: {integrity: sha512-0hJU9SCPvmMzIBdZFqNPXWa6dqh7WdH0cII9y+CyS8rG3nL48Bclra9HmKhVVUHyPWNH5Y7xDwAB7bfgSjkUMQ==}
     engines: {node: '>= 0.4'}
@@ -2459,9 +2459,6 @@ packages:
     resolution: {integrity: sha512-F/1DnUGPopORZi0ni+CvrCgHQ5FyEAHRLSApuYWMmrbSwoN2Mn/7k+Gl38gJnR7yyDZk6WLXwiGod1JOWNDKGw==}
     hasBin: true
 
-  hmac-drbg@1.0.1:
-    resolution: {integrity: sha1-0nRXAQJabHdabFRXk+1QL8DGSaE=}
-
   html-minifier@4.0.0:
     resolution: {integrity: sha512-aoGxanpFPLg7MkIl/DDFYtb0iWz7jMFGqFhvEDZga6/4QTjneiD8I/NXL1x5aaoCp7FSIT6h/OhykDdPsbtMig==}
     engines: {node: '>=6'}
@@ -2557,9 +2554,6 @@ packages:
     resolution: {integrity: sha512-FFUtZMpoZ8RqHS3XeXEmHWLA4thH+ZxCv2lOiPIn1Xc7CxrqhWzNSDzD+/chS/zbYezmiwWLdQC09JdQKmthOw==}
     engines: {node: '>=20'}
 
-  isopen@1.3.0:
-    resolution: {integrity: sha512-AN6Q9J0UlqHFl1fN/2xJCHCBLCBCFDjZhpGBO1gh3wzgRPsFSFBUL36I2Lbfd9qkuoj58axmE7j83iejTQsk8Q==}
-
   jackspeak@4.1.1:
     resolution: {integrity: sha512-zptv57P3GpL+O0I7VdMJNBZCu+BPHVQUk55Ft8/QCJjTVxrnJHuVuX/0Bl2A6/+2oyR/ZMEuFKwmzqqZ/U5nPQ==}
     engines: {node: 20 || >=22}
@@ -2652,6 +2646,10 @@ packages:
     resolution: {integrity: sha512-/IXtbwEk5HTPyEwyKX6hGkYXxM9nbj64B+ilVJnC/R6B0pH5G4V3b0pVbL7DBj4tkhBAppbQUlf6F6Xl9LHu1g==}
     engines: {node: '>= 0.4'}
 
+  maxmind@5.0.5:
+    resolution: {integrity: sha512-1lcH2kMjbBpCFhuHaMU32vz8CuOsKttRcWMQyXvtlklopCzN7NNHSVR/h9RYa8JPuFTGmkn2vYARm+7cIGuqDw==}
+    engines: {node: '>=12', npm: '>=6'}
+
   mdast-util-find-and-replace@3.0.2:
     resolution: {integrity: sha512-Tmd1Vg/m3Xz43afeNxDIhWRtFZgM2VLyaf4vSTYwudTyeuTneoL3qtWMA5jeLyz/O1vDJmmV4QuScFCA2tBPwg==}
 
@@ -2810,16 +2808,14 @@ packages:
   mingo@7.2.0:
     resolution: {integrity: sha512-UeX942qZpofn5L97h295SkS7j/ADf7Qac8gdRCMBPxi0/1m70aeB2owLFvWbyuMj1dowonlivlVRQVDx+6h+7Q==}
 
-  minimalistic-assert@1.0.1:
-    resolution: {integrity: sha512-UtJcAD4yEaGtjPezWuO9wC4nwUnVH/8/Im3yEHQP4b67cXlD/Qr9hdITCU1xDbSEXg2XKNaP8jsReV7vQd00/A==}
-
-  minimalistic-crypto-utils@1.0.1:
-    resolution: {integrity: sha1-9sAMHAsIIkblxNmd+4x8CDsrWCo=}
-
   minimatch@10.1.1:
     resolution: {integrity: sha512-enIvLvRAFZYXJzkCYG5RKmPfrFArdLv+R+lbQ53BmIMLIry74bjKzX6iHAm8WYamJkhSSEabrWN5D97XnKObjQ==}
     engines: {node: 20 || >=22}
 
+  minimatch@10.2.4:
+    resolution: {integrity: sha512-oRjTw/97aTBN0RHbYCdtF1MQfvusSIBQM0IZEgzl6426+8jSC0nF1a/GmnVLpfB9yyr6g6FTqWqiZVbxrtaCIg==}
+    engines: {node: 18 || 20 || >=22}
+
   minimatch@3.1.2:
     resolution: {integrity: sha512-J7p63hRiAjw1NDEww1W7i37+ByIrOWO5XQQAzZ3VOcL0PNybwpfmV/N05zFAzwQ9USyEcX6t3UO+K5aqBQOIHw==}
 
@@ -2837,6 +2833,10 @@ packages:
   mitt@3.0.1:
     resolution: {integrity: sha512-vKivATfr97l2/QBCYAkXYDbrIWPM2IIKEl7YPhjCvKlG3kE2gm+uBo6nEXK3M5/Ffh/FLpKExzOQ3JJoJGFKBw==}
 
+  mmdb-lib@3.0.2:
+    resolution: {integrity: sha512-7e87vk0DdWT647wjcfEtWeMtjm+zVGqNohN/aeIymbUfjHQ2T4Sx5kM+1irVDBSloNC3CkGKxswdMoo8yhqTDg==}
+    engines: {node: '>=10', npm: '>=6'}
+
   mongodb-connection-string-url@3.0.2:
     resolution: {integrity: sha512-rMO7CGo/9BFwyZABcKAWL8UJwH/Kc2x0g72uhDWzG48URRax5TCIcJ7Rc3RZqffZzO/Gwff/jyKwCU9TN8gehA==}
 
@@ -3043,10 +3043,6 @@ packages:
     resolution: {integrity: sha512-5gTmgEY/sqK6gFXLIsQNH19lWb4ebPDLA4SdLP7dsWkIXHWlG66oPuVvXSGFPppYZz8ZDZq0dYYrbHfBCVUb1Q==}
     engines: {node: '>=12'}
 
-  ping@0.4.4:
-    resolution: {integrity: sha512-56ZMC0j7SCsMMLdOoUg12VZCfj/+ZO+yfOSjaNCRrmZZr6GLbN2X/Ui56T15dI8NhiHckaw5X2pvyfAomanwqQ==}
-    engines: {node: '>=4.0.0'}
-
   pixelmatch@5.3.0:
     resolution: {integrity: sha512-o8mkY4E/+LNUf6LzX96ht6k6CEDi65k9G2rjMtBe9Oo+VPKSvl+0GKHuH/AlG+GA5LPG/i5hrekkxUc3s2HU+Q==}
     hasBin: true
@@ -3324,12 +3320,6 @@ packages:
   symbol-tree@3.2.4:
     resolution: {integrity: sha512-9QNk5KwDF+Bvz+PyObkmSYjI5ksVUYtjW7AU22r2NKcfLJcXp96hkDWU3+XndOsUb+AQ9QhfzfCT2O+CNWT5Tw==}
 
-  systeminformation@5.27.11:
-    resolution: {integrity: sha512-K3Lto/2m3K2twmKHdgx5B+0in9qhXK4YnoT9rIlgwN/4v7OV5c8IjbeAUkuky/6VzCQC7iKCAqi8rZathCdjHg==}
-    engines: {node: '>=8.0.0'}
-    os: [darwin, linux, win32, freebsd, openbsd, netbsd, sunos, android]
-    hasBin: true
-
   tagged-tag@1.0.0:
     resolution: {integrity: sha512-yEFYrVhod+hdNyx7g5Bnkkb0G6si8HJurOoOEgC8B/O0uXLHlaey/65KRv6cuWBNhBgHKAROVpc7QyYqE5gFng==}
     engines: {node: '>=20'}
@@ -3355,6 +3345,10 @@ packages:
   through@2.3.8:
     resolution: {integrity: sha1-DdTJ/6q8NXlgsbckEV1+Doai4fU=}
 
+  tiny-lru@11.4.7:
+    resolution: {integrity: sha512-w/Te7uMUVeH0CR8vZIjr+XiN41V+30lkDdK+NRIDCUYKKuL9VcmaUEmaPISuwGhLlrTGh5yu18lENtR9axSxYw==}
+    engines: {node: '>=12'}
+
   tiny-worker@2.3.0:
     resolution: {integrity: sha512-pJ70wq5EAqTAEl9IkGzA+fN0836rycEuz2Cn6yeZ6FRzlVS5IDOkFHpIoEsksPRQV34GDqXm65+OlnZqUSyK2g==}
 
@@ -4784,8 +4778,6 @@ snapshots:
       '@jimp/types': 1.6.0
       tinycolor2: 1.6.0
 
-  '@leichtgewicht/ip-codec@2.0.5': {}
-
   '@lit-labs/ssr-dom-shim@1.4.0': {}
 
   '@lit/reactive-element@2.1.1':
@@ -5185,19 +5177,15 @@ snapshots:
     dependencies:
       '@push.rocks/smartpromise': 4.2.3
 
-  '@push.rocks/smartdns@7.6.1':
+  '@push.rocks/smartdns@7.9.0':
     dependencies:
       '@push.rocks/smartdelay': 3.0.5
-      '@push.rocks/smartenv': 5.0.13
+      '@push.rocks/smartenv': 6.0.0
       '@push.rocks/smartpromise': 4.2.3
-      '@push.rocks/smartrequest': 2.1.0
-      '@tsclass/tsclass': 9.4.0
-      '@types/dns-packet': 5.6.5
-      '@types/elliptic': 6.4.18
+      '@push.rocks/smartrust': 1.3.2
+      '@tsclass/tsclass': 9.5.0
       acme-client: 5.4.0
-      dns-packet: 5.6.1
-      elliptic: 6.6.1
-      minimatch: 10.1.1
+      minimatch: 10.2.4
     transitivePeerDependencies:
       - supports-color
 
@@ -5423,14 +5411,11 @@ snapshots:
       - supports-color
       - vue
 
-  '@push.rocks/smartnetwork@4.4.0':
+  '@push.rocks/smartnetwork@4.5.2':
     dependencies:
-      '@push.rocks/smartdns': 7.6.1
-      '@push.rocks/smartping': 1.0.8
-      '@push.rocks/smartpromise': 4.2.3
-      '@push.rocks/smartstring': 4.1.0
-      isopen: 1.3.0
-      systeminformation: 5.27.11
+      '@push.rocks/smartdns': 7.9.0
+      '@push.rocks/smartrust': 1.3.2
+      maxmind: 5.0.5
     transitivePeerDependencies:
       - supports-color
 
@@ -5471,7 +5456,7 @@ snapshots:
       '@push.rocks/smartdelay': 3.0.5
       '@push.rocks/smartfs': 1.5.0
       '@push.rocks/smartjimp': 1.2.0
-      '@push.rocks/smartnetwork': 4.4.0
+      '@push.rocks/smartnetwork': 4.5.2
       '@push.rocks/smartpath': 6.0.0
       '@push.rocks/smartpromise': 4.2.3
       '@push.rocks/smartpuppeteer': 2.0.5(typescript@6.0.2)
@@ -5493,11 +5478,6 @@ snapshots:
       - utf-8-validate
       - vue
 
-  '@push.rocks/smartping@1.0.8':
-    dependencies:
-      '@types/ping': 0.4.4
-      ping: 0.4.4
-
   '@push.rocks/smartpromise@4.2.3': {}
 
   '@push.rocks/smartpuppeteer@2.0.5(typescript@6.0.2)':
@@ -6189,10 +6169,6 @@ snapshots:
       tslib: 2.8.1
     optional: true
 
-  '@types/bn.js@5.2.0':
-    dependencies:
-      '@types/node': 25.5.0
-
   '@types/clean-css@4.2.11':
     dependencies:
       '@types/node': 25.5.0
@@ -6202,14 +6178,6 @@ snapshots:
     dependencies:
       '@types/ms': 2.1.0
 
-  '@types/dns-packet@5.6.5':
-    dependencies:
-      '@types/node': 25.5.0
-
-  '@types/elliptic@6.4.18':
-    dependencies:
-      '@types/bn.js': 5.2.0
-
   '@types/fs-extra@11.0.4':
     dependencies:
       '@types/jsonfile': 6.1.4
@@ -6263,8 +6231,6 @@ snapshots:
     dependencies:
       undici-types: 7.18.2
 
-  '@types/ping@0.4.4': {}
-
   '@types/relateurl@0.2.33': {}
 
   '@types/semver@7.7.1': {}
@@ -6388,6 +6354,8 @@ snapshots:
 
   balanced-match@1.0.2: {}
 
+  balanced-match@4.0.4: {}
+
   bare-events@2.8.2: {}
 
   bare-fs@4.5.5:
@@ -6427,8 +6395,6 @@ snapshots:
 
   bmp-ts@1.0.9: {}
 
-  bn.js@4.12.2: {}
-
   bowser@2.12.1: {}
 
   brace-expansion@1.1.12:
@@ -6440,6 +6406,10 @@ snapshots:
     dependencies:
       balanced-match: 1.0.2
 
+  brace-expansion@5.0.5:
+    dependencies:
+      balanced-match: 4.0.4
+
   broadcast-channel@7.2.0:
     dependencies:
       '@babel/runtime': 7.28.4
@@ -6447,8 +6417,6 @@ snapshots:
       p-queue: 6.6.2
       unload: 2.4.1
 
-  brorand@1.1.0: {}
-
   bson@6.10.4: {}
 
   buffer-crc32@0.2.13: {}
@@ -6617,10 +6585,6 @@ snapshots:
 
   devtools-protocol@0.0.1581282: {}
 
-  dns-packet@5.6.1:
-    dependencies:
-      '@leichtgewicht/ip-codec': 2.0.5
-
   dunder-proto@1.0.1:
     dependencies:
       call-bind-apply-helpers: 1.0.2
@@ -6629,16 +6593,6 @@ snapshots:
 
   eastasianwidth@0.2.0: {}
 
-  elliptic@6.6.1:
-    dependencies:
-      bn.js: 4.12.2
-      brorand: 1.1.0
-      hash.js: 1.1.7
-      hmac-drbg: 1.0.1
-      inherits: 2.0.4
-      minimalistic-assert: 1.0.1
-      minimalistic-crypto-utils: 1.0.1
-
   emoji-regex@8.0.0: {}
 
   emoji-regex@9.2.2: {}
@@ -6972,11 +6926,6 @@ snapshots:
     dependencies:
       has-symbols: 1.1.0
 
-  hash.js@1.1.7:
-    dependencies:
-      inherits: 2.0.4
-      minimalistic-assert: 1.0.1
-
   hasown@2.0.2:
     dependencies:
       function-bind: 1.1.2
@@ -7007,12 +6956,6 @@ snapshots:
 
   he@1.2.0: {}
 
-  hmac-drbg@1.0.1:
-    dependencies:
-      hash.js: 1.1.7
-      minimalistic-assert: 1.0.1
-      minimalistic-crypto-utils: 1.0.1
-
   html-minifier@4.0.0:
     dependencies:
       camel-case: 3.0.0
@@ -7110,8 +7053,6 @@ snapshots:
 
   isexe@4.0.0: {}
 
-  isopen@1.3.0: {}
-
   jackspeak@4.1.1:
     dependencies:
       '@isaacs/cliui': 8.0.2
@@ -7225,6 +7166,11 @@ snapshots:
 
   math-intrinsics@1.1.0: {}
 
+  maxmind@5.0.5:
+    dependencies:
+      mmdb-lib: 3.0.2
+      tiny-lru: 11.4.7
+
   mdast-util-find-and-replace@3.0.2:
     dependencies:
       '@types/mdast': 4.0.4
@@ -7566,14 +7512,14 @@ snapshots:
 
   mingo@7.2.0: {}
 
-  minimalistic-assert@1.0.1: {}
-
-  minimalistic-crypto-utils@1.0.1: {}
-
   minimatch@10.1.1:
     dependencies:
       '@isaacs/brace-expansion': 5.0.0
 
+  minimatch@10.2.4:
+    dependencies:
+      brace-expansion: 5.0.5
+
   minimatch@3.1.2:
     dependencies:
       brace-expansion: 1.1.12
@@ -7588,6 +7534,8 @@ snapshots:
 
   mitt@3.0.1: {}
 
+  mmdb-lib@3.0.2: {}
+
   mongodb-connection-string-url@3.0.2:
     dependencies:
       '@types/whatwg-url': 11.0.5
@@ -7791,8 +7739,6 @@ snapshots:
 
   picomatch@4.0.3: {}
 
-  ping@0.4.4: {}
-
   pixelmatch@5.3.0:
     dependencies:
       pngjs: 6.0.0
@@ -8162,8 +8108,6 @@ snapshots:
 
   symbol-tree@3.2.4: {}
 
-  systeminformation@5.27.11: {}
-
   tagged-tag@1.0.0: {}
 
   tar-fs@3.1.2:
@@ -8219,6 +8163,8 @@ snapshots:
 
   through@2.3.8: {}
 
+  tiny-lru@11.4.7: {}
+
   tiny-worker@2.3.0:
     dependencies:
       esm: 3.2.25
diff --git a/test/tapbundle/test.network-tools.node.ts b/test/tapbundle/test.network-tools.node.ts
index c60934a..fbb6376 100644
--- a/test/tapbundle/test.network-tools.node.ts
+++ b/test/tapbundle/test.network-tools.node.ts
@@ -1,5 +1,7 @@
 import { tap, expect } from '../../ts_tapbundle/index.js';
-import { tapNodeTools } from '../../ts_tapbundle_serverside/index.js';
+import { TapNodeTools } from '../../ts_tapbundle_serverside/index.js';
+
+const tapNodeTools = new TapNodeTools(tap);
 
 tap.test('should find a single free port', async () => {
   const port = await tapNodeTools.findFreePort();
diff --git a/test/tapbundle/test.node.ts b/test/tapbundle/test.node.ts
index 5ab03a4..174801b 100644
--- a/test/tapbundle/test.node.ts
+++ b/test/tapbundle/test.node.ts
@@ -1,6 +1,7 @@
 import { tap, expect } from '../../ts_tapbundle/index.js';
+import { TapNodeTools } from '../../ts_tapbundle_serverside/index.js';
 
-import { tapNodeTools } from '../../ts_tapbundle_serverside/index.js';
+const tapNodeTools = new TapNodeTools(tap);
 
 tap.test('should execure a command', async () => {
   const result = await tapNodeTools.runCommand('ls -la');
diff --git a/ts/00_commitinfo_data.ts b/ts/00_commitinfo_data.ts
index 6ef5b06..a2e033e 100644
--- a/ts/00_commitinfo_data.ts
+++ b/ts/00_commitinfo_data.ts
@@ -3,6 +3,6 @@
  */
 export const commitinfo = {
   name: '@git.zone/tstest',
-  version: '3.6.2',
+  version: '3.6.3',
   description: 'A powerful, modern test runner for TypeScript with multi-runtime support (Node.js, Deno, Bun, Chromium) and a batteries-included test framework.'
 }
diff --git a/ts/tstest.classes.runtime.chromium.ts b/ts/tstest.classes.runtime.chromium.ts
index eacb0fb..676b3cd 100644
--- a/ts/tstest.classes.runtime.chromium.ts
+++ b/ts/tstest.classes.runtime.chromium.ts
@@ -83,6 +83,9 @@ export class ChromiumRuntimeAdapter extends RuntimeAdapter {
       throw new Error('Could not find a free WebSocket port in range 30000-40000');
     }
 
+    // Stop the smartnetwork instance to release the Rust bridge process
+    await smartnetwork.stop();
+
     // Log selected ports for debugging
     if (!this.logger.options.quiet) {
       console.log(`Selected ports - HTTP: ${httpPort}, WebSocket: ${wsPort}`);
diff --git a/ts_tapbundle/tapbundle.classes.tap.ts b/ts_tapbundle/tapbundle.classes.tap.ts
index 55ffcd3..f986fce 100644
--- a/ts_tapbundle/tapbundle.classes.tap.ts
+++ b/ts_tapbundle/tapbundle.classes.tap.ts
@@ -117,7 +117,8 @@ export class Tap<T> {
   private settingsManager = new SettingsManager();
   private _skipCount = 0;
   private _filterTags: string[] = [];
-  
+  private _cleanupFunctions: Array<() => Promise<void> | void> = [];
+
   constructor() {
     // Get filter tags from environment
     if (typeof process !== 'undefined' && process.env && process.env.TSTEST_FILTER_TAGS) {
@@ -125,6 +126,14 @@ export class Tap<T> {
     }
   }
   
+  /**
+   * Register a cleanup function to be called when tap.start() finishes.
+   * Use this to tear down resources that would otherwise keep the event loop alive.
+   */
+  public registerCleanup(fn: () => Promise<void> | void) {
+    this._cleanupFunctions.push(fn);
+  }
+
   // Fluent test builder
   public tags(...tags: string[]) {
     const builder = new TestBuilder<T>(this);
@@ -610,6 +619,15 @@ export class Tap<T> {
       }
     }
 
+    // Run registered cleanup functions (e.g. tapNodeTools stopping SmartNetwork Rust bridge)
+    for (const cleanupFn of this._cleanupFunctions) {
+      try {
+        await cleanupFn();
+      } catch (e) {
+        // Don't let cleanup errors break the test run
+      }
+    }
+
     if (optionsArg && optionsArg.throwOnError && failReasons.length > 0) {
       if (!smartenvInstance.isBrowser && typeof process !== 'undefined') process.exit(1);
     }
diff --git a/ts_tapbundle_serverside/classes.tapnodetools.ts b/ts_tapbundle_serverside/classes.tapnodetools.ts
index 3799113..5aa4095 100644
--- a/ts_tapbundle_serverside/classes.tapnodetools.ts
+++ b/ts_tapbundle_serverside/classes.tapnodetools.ts
@@ -1,12 +1,18 @@
 import { TestFileProvider } from './classes.testfileprovider.js';
 import * as plugins from './plugins.js';
 
-class TapNodeTools {
+export interface ITapCleanupTarget {
+  registerCleanup: (fn: () => Promise<void> | void) => void;
+}
+
+export class TapNodeTools {
   private smartshellInstance: plugins.smartshell.Smartshell;
   private smartnetworkInstance: plugins.smartnetwork.SmartNetwork;
   public testFileProvider = new TestFileProvider();
 
-  constructor() {}
+  constructor(tapArg: ITapCleanupTarget) {
+    tapArg.registerCleanup(() => this.cleanup());
+  }
 
   private qenv: plugins.qenv.Qenv;
   public async getQenv(): Promise<plugins.qenv.Qenv> {
@@ -75,7 +81,7 @@ class TapNodeTools {
   /**
    * create and return a smartmongo instance
    */
-  public async createSmartmongo() { 
+  public async createSmartmongo() {
     const smartmongoMod = await import('@push.rocks/smartmongo');
     const smartmongoInstance = new smartmongoMod.SmartMongo();
     await smartmongoInstance.start();
@@ -217,6 +223,15 @@ class TapNodeTools {
       `Could not find ${countArg} consecutive free ports in range ${options.startPort}-${options.endPort}`
     );
   }
-}
 
-export const tapNodeTools = new TapNodeTools();
+  /**
+   * Clean up long-lived resources (e.g. the SmartNetwork Rust bridge process)
+   * so the Node.js event loop can drain naturally.
+   */
+  public async cleanup() {
+    if (this.smartnetworkInstance) {
+      await this.smartnetworkInstance.stop();
+      this.smartnetworkInstance = null;
+    }
+  }
+}
diff --git a/ts_tapbundle_serverside/readme.md b/ts_tapbundle_serverside/readme.md
index a858b6a..495a521 100644
--- a/ts_tapbundle_serverside/readme.md
+++ b/ts_tapbundle_serverside/readme.md
@@ -30,8 +30,11 @@ For reporting bugs, issues, or security vulnerabilities, please visit [community
 ## Basic Usage
 
 ```typescript
-import { tapNodeTools } from '@git.zone/tstest/tapbundle_serverside';
 import { tap, expect } from '@git.zone/tstest/tapbundle';
+import { TapNodeTools } from '@git.zone/tstest/tapbundle_serverside';
+
+// Create an instance and pass `tap` so cleanup is automatic
+const tapNodeTools = new TapNodeTools(tap);
 
 tap.test('should start server on free port', async () => {
   const port = await tapNodeTools.findFreePort();
@@ -41,11 +44,15 @@ tap.test('should start server on free port', async () => {
 export default tap.start();
 ```
 
+### How cleanup works
+
+`TapNodeTools` accepts any object with a `registerCleanup()` method (the `tap` instance). On construction, it registers a cleanup callback that stops long-lived background processes (e.g. the SmartNetwork Rust bridge). When `tap.start()` finishes running all tests, it calls all registered cleanup functions automatically, so the Node.js event loop can drain and the process exits cleanly.
+
 ## API Reference
 
-### tapNodeTools
+### TapNodeTools
 
-The main singleton instance providing all Node.js-specific utilities.
+Construct with a `tap` instance to enable automatic cleanup:
 
 ---