diff --git a/.github/workflows/nss_install_smoke.yml b/.github/workflows/nss_install_smoke.yml
deleted file mode 100644
index 91d1bcb4d..000000000
--- a/.github/workflows/nss_install_smoke.yml
+++ /dev/null
@@ -1,82 +0,0 @@
-name: NSS install smoke
-
-# Phase 4 of nss_first_class_sampler — verifies that the documented two-step
-# install (`pip install autofit[nss]` followed by the manual `pip install
-# git+...` for the handley-lab/blackjax fork and yallup/nss) lands a working
-# NSS environment.
-#
-# Why two steps: PyPI bans `git+https://` URLs in uploaded wheel metadata
-# (rejection: "400 Can't have direct dependency"), so the fork-based deps
-# cannot live in pyproject.toml's [nss] extra. The SHAs themselves are
-# documented in PyAutoFit/pyproject.toml just above the [nss] entry — keep
-# the two in sync.
-#
-# Runs on every PR (so we catch local regressions in pyproject.toml or in
-# the documented manual install before merging) and on a weekly cron (so we
-# catch upstream regressions in handley-lab/blackjax or yallup/nss that
-# drift past the pinned SHAs).
-
-on:
-  pull_request:
-  workflow_dispatch:
-  # --- PAUSED 2026-07-06: routine cron disabled org-wide; re-enable by uncommenting ---
-  # schedule:
-  #   # Sundays at 03:00 UTC — quiet hours, catches upstream drift weekly.
-  #   - cron: '0 3 * * 0'
-
-jobs:
-  fresh_venv_install:
-    name: Fresh-venv install of autofit[nss]
-    runs-on: ubuntu-latest
-    timeout-minutes: 20
-    steps:
-      - name: Checkout PyAutoConf
-        uses: actions/checkout@v4
-        with:
-          repository: PyAutoLabs/PyAutoConf
-          path: PyAutoConf
-      - name: Checkout PyAutoFit
-        uses: actions/checkout@v4
-        with:
-          path: PyAutoFit
-      - name: Set up Python 3.12
-        uses: actions/setup-python@v5
-        with:
-          python-version: '3.12'
-      - name: Upgrade pip
-        run: python -m pip install --upgrade pip
-      - name: Install PyAutoConf
-        run: python -m pip install -e PyAutoConf
-      - name: Install PyAutoFit with [nss] extra
-        run: python -m pip install -e PyAutoFit[nss]
-      - name: Install handley-lab/blackjax and yallup/nss (manual, post-extras)
-        # Mirrors the documented two-step install path. Keep these SHAs in
-        # sync with the block at the top of PyAutoFit/pyproject.toml's [nss]
-        # comment — that's the single source of truth.
-        run: |
-          python -m pip install \
-            "blackjax @ git+https://github.com/handley-lab/blackjax.git@ef45acd2f2fa0cca15adbdcd3ff7cb3a98987cb5" \
-            "nss @ git+https://github.com/yallup/nss.git@69159b0f4a3a53123b9eec7df91e4ed3885e4dc4"
-      - name: Import smoke
-        run: |
-          python -c "
-          import autofit as af
-          import nss.ns
-          import blackjax
-
-          # Confirm the right blackjax fork landed (mainline does not have
-          # blackjax.ns.adaptive — this attribute access is the canonical
-          # check for the handley-lab fork).
-          import blackjax.ns.adaptive
-          assert hasattr(blackjax.ns.adaptive, 'init'), (
-              'blackjax.ns.adaptive.init missing — wrong blackjax installed?'
-          )
-
-          # Confirm af.NSS instantiates without ImportError.
-          search = af.NSS(n_live=10, num_mcmc_steps=2, num_delete=5, termination=-1.0)
-          assert search.checkpoint_interval == 100
-
-          print('NSS install smoke: OK')
-          print(f'  blackjax version: {blackjax.__version__}')
-          print(f'  nss installed at: {nss.__file__}')
-          "