diff --git a/.github/workflows/evals-main-backstop.yml b/.github/workflows/evals-main-backstop.yml
index c5d4f7520..b802e1db6 100644
--- a/.github/workflows/evals-main-backstop.yml
+++ b/.github/workflows/evals-main-backstop.yml
@@ -61,5 +61,5 @@ jobs:
           GH_TOKEN: ${{ github.token }}
           GSTACK_STATE_ROOT: ${{ runner.temp }}/gstack-state
         run: |
-          bun --no-install run scripts/train-backstop.ts run --repo "$GITHUB_REPOSITORY" --branch "$GITHUB_REF_NAME" --sha "$GITHUB_SHA" \
+          bun --no-env-file --config=/dev/null --no-install run scripts/train-backstop.ts run --repo "$GITHUB_REPOSITORY" --branch "$GITHUB_REF_NAME" --sha "$GITHUB_SHA" \
             --summary "$GITHUB_STEP_SUMMARY"
diff --git a/.github/workflows/evals.yml b/.github/workflows/evals.yml
index 9f46c3032..4c0066fe1 100644
--- a/.github/workflows/evals.yml
+++ b/.github/workflows/evals.yml
@@ -226,7 +226,7 @@ jobs:
             echo "mode=${mode}" >> "$GITHUB_OUTPUT"
             echo "- Run mode: ${mode}" >> "$GITHUB_STEP_SUMMARY"
           elif [ -f scripts/train-gate.ts ]; then
-            bun --no-install run scripts/train-gate.ts route --github-output "$GITHUB_OUTPUT" >> "$GITHUB_STEP_SUMMARY"
+            bun --no-env-file --config=/dev/null --no-install run scripts/train-gate.ts route --github-output "$GITHUB_OUTPUT" >> "$GITHUB_STEP_SUMMARY"
           elif [ -n "${CASES}${PREFIX_SHAS}${SCREEN_PR}${SCREEN_MERGE_SHA}${SCREEN_POLICY}" ]; then
             echo "::error::${GITHUB_REF_NAME} has no scripts/train-gate.ts to validate the train or screen inputs; dispatch from a ref that has it"
             exit 1
@@ -258,7 +258,7 @@ jobs:
           PREFIXES: ${{ steps.route.outputs.prefixes }}
           NONCE: ${{ inputs.nonce }}
         run: |
-          bun --no-install run scripts/train-gate.ts bisect-plan --cases "$CASES" --prefixes "$PREFIXES" --nonce "$NONCE" \
+          bun --no-env-file --config=/dev/null --no-install run scripts/train-gate.ts bisect-plan --cases "$CASES" --prefixes "$PREFIXES" --nonce "$NONCE" \
             --out /tmp/train-bisect/bisect.json --github-output "$GITHUB_OUTPUT" >> "$GITHUB_STEP_SUMMARY"
 
       - name: Hand the bisect plan to its executors
@@ -477,7 +477,7 @@ jobs:
           PR_NUMBER: ${{ github.event.pull_request.number }}
         run: |
           EVALS_TIER=gate bun --no-install run scripts/test-paid-shards.ts --tier gate --emit-plan /tmp/paid-plan/manifest.json --slices 1
-          bun --no-install run scripts/train-gate.ts screen-summary /tmp/paid-plan/manifest.json --pr "$PR_NUMBER" >> "$GITHUB_STEP_SUMMARY"
+          bun --no-env-file --config=/dev/null --no-install run scripts/train-gate.ts screen-summary /tmp/paid-plan/manifest.json --pr "$PR_NUMBER" >> "$GITHUB_STEP_SUMMARY"
           bun --no-install run scripts/test-pr-profile.ts summary /tmp/paid-plan/manifest.json >> "$GITHUB_STEP_SUMMARY"
 
   # ── Sliced lane (the ONLY paid lane; legacy 17-row matrix deleted) ──────────
@@ -881,7 +881,7 @@ jobs:
           EVALS_JOBS: "1"
           EVALS_CONCURRENCY: "1"
           SLICE: ${{ matrix.slice }}
-        run: EVALS_TIER=gate bun run scripts/train-gate.ts bisect-prefix --plan /tmp/train-bisect/bisect.json --index "$SLICE" --out /tmp/train-bisect/out
+        run: EVALS_TIER=gate bun --no-env-file --config=/dev/null run scripts/train-gate.ts bisect-prefix --plan /tmp/train-bisect/bisect.json --index "$SLICE" --out /tmp/train-bisect/out
 
       - name: Upload the prefix record
         if: always() && steps.prefix.outputs.short != ''
@@ -1092,7 +1092,7 @@ jobs:
           RECORD: ${{ needs.plan-slices.outputs.record_artifact }}
           RECONCILE_EXIT: ${{ steps.reconcile.outputs.exit }}
         run: |
-          bun --no-install run scripts/train-gate.ts train-record /tmp/paid-report --nonce "$NONCE" --head "$HEAD_SHA" \
+          bun --no-env-file --config=/dev/null --no-install run scripts/train-gate.ts train-record /tmp/paid-report --nonce "$NONCE" --head "$HEAD_SHA" \
             --reconcile-exit "$RECONCILE_EXIT" --run-id "$GITHUB_RUN_ID" --run-attempt "$GITHUB_RUN_ATTEMPT" --repo "$GITHUB_REPOSITORY" \
             --out "/tmp/train-record/${RECORD}.json" >> "$GITHUB_STEP_SUMMARY"
 
diff --git a/CHANGELOG.md b/CHANGELOG.md
index fc3cbf4b5..2a0cfded6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,6 @@
 # Changelog
 
-## [Unreleased]
+## [1.91.162.0] - 2026-10-19
 
 **The evals workflow carries merge trains: a train's own gate publishes its record and the `gstack/full-gate` check, bisects run one executor per prefix, `ready --screen` dispatches a real screen, and a main backstop gates any tree no green train covered.** All of it stays off unless the base revision's `.gstack/ship-policy.json` declares a `train` block. Without one, a PR push and every eval-bg dispatch run today's jobs and steps with today's values. The one addition is a free `route` job that reads the policy with git and jq. gstack's own policy still has no `train` block; turning it on is a separate one-line policy PR. Plan GSTA-49, lane T1b.
 
diff --git a/VERSION b/VERSION
index ce5db131c..de430fa60 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-1.91.161.0
+1.91.162.0
diff --git a/agents-digest/gstack-AGENTS.md b/agents-digest/gstack-AGENTS.md
index 6a8b91bb2..5b0af3a1d 100644
--- a/agents-digest/gstack-AGENTS.md
+++ b/agents-digest/gstack-AGENTS.md
@@ -1,4 +1,4 @@
-# gstack digest v1.91.161.0 — regenerate/re-copy after upgrading gstack
+# gstack digest v1.91.162.0 — regenerate/re-copy after upgrading gstack
 
 Behavioral rules from gstack (https://github.com/garrytan/gstack), compressed
 for agent hosts without a full skill install. The full skills add workflows,
diff --git a/package.json b/package.json
index 6c404f000..e9e7fc750 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "gstack",
-  "version": "1.91.161",
+  "version": "1.91.162",
   "description": "Garry's Stack — Claude Code skills + fast headless browser. One repo, one install, entire AI engineering workflow.",
   "license": "MIT",
   "type": "module",