diff --git a/.github/actions/install-node-dependencies/action.yml b/.github/actions/install-node-dependencies/action.yml
index c01ae5b2ef8..1c5e11129b5 100644
--- a/.github/actions/install-node-dependencies/action.yml
+++ b/.github/actions/install-node-dependencies/action.yml
@@ -46,7 +46,7 @@ outputs:
     description: The small pnpm-owned verification record, without registry metadata.
     value: ${{ steps.verification-cache.outputs.path }}
   verification-cache-key:
-    description: Exact verification record key, also used by the isolated PR benchmark.
+    description: Exact verification record cache key.
     value: ${{ steps.verification-cache.outputs.key }}
   node-version:
     description: Resolved Node.js version used for the install.
diff --git a/.github/workflows/ci-closed-pr-caches.yml b/.github/workflows/ci-closed-pr-caches.yml
index a5a3a9f33f2..f215a6d3226 100644
--- a/.github/workflows/ci-closed-pr-caches.yml
+++ b/.github/workflows/ci-closed-pr-caches.yml
@@ -39,7 +39,6 @@ jobs:
               ['release-ref-validation', 'release-ref-validation.yml'],
               ['docs-pr', 'docs.yml'],
               ['cloud-verify-refs/pull', 'cloud-verify.yml', '/merge'],
-              ['pnpm-verification-pilot', 'ci-pnpm-verification-pilot.yml'],
               ['win-orcad-serve-switch-e2e', 'win-orcad-serve-switch-e2e.yml'],
               ['pi-provider-runtime', 'pi-provider-runtime.yml'],
               ['coding-plan-contract', 'zcode-credential-contract.yml', '-credentials'],
diff --git a/.github/workflows/ci-pnpm-verification-pilot.yml b/.github/workflows/ci-pnpm-verification-pilot.yml
deleted file mode 100644
index bbbc989c720..00000000000
--- a/.github/workflows/ci-pnpm-verification-pilot.yml
+++ /dev/null
@@ -1,67 +0,0 @@
-name: pnpm verification cache pilot
-
-on:
-  pull_request:
-    types: [opened, synchronize, reopened, ready_for_review, converted_to_draft]
-    paths: ['.github/workflows/ci-pnpm-verification-pilot.yml']
-  workflow_dispatch:
-
-permissions:
-  contents: read
-
-concurrency:
-  group: pnpm-verification-pilot-${{ github.event.pull_request.number || github.ref }}
-  cancel-in-progress: true
-
-env:
-  ORCA_BACKGROUND_LAUNCH: '1'
-
-jobs:
-  seed:
-    if: github.event_name != 'pull_request' || github.event.pull_request.draft != true
-    strategy:
-      matrix:
-        runner: [ubuntu-latest, ubuntu-24.04-arm]
-    runs-on: ${{ matrix.runner }}
-    timeout-minutes: 15
-    steps:
-      - uses: actions/checkout@v6
-        with:
-          persist-credentials: false
-      - uses: ./.github/actions/install-node-dependencies
-        id: deps
-      # PR caches are scoped to the PR merge ref; main never restores them.
-      - uses: actions/cache/save@v5
-        if: steps.deps.outputs.verification-cache-hit != 'true'
-        with:
-          path: ${{ steps.deps.outputs.verification-cache-path }}
-          key: ${{ steps.deps.outputs.verification-cache-key }}
-
-  measure:
-    needs: seed
-    name: measure ${{ matrix.runner }} sample ${{ matrix.sample }} cache ${{ matrix.cache }}
-    strategy:
-      fail-fast: false
-      max-parallel: 4
-      matrix:
-        runner: [ubuntu-latest, ubuntu-24.04-arm]
-        sample: [1, 2, 3]
-        cache: ['false', 'true']
-    runs-on: ${{ matrix.runner }}
-    timeout-minutes: 15
-    steps:
-      - uses: actions/checkout@v6
-        with:
-          persist-credentials: false
-      - uses: ./.github/actions/install-node-dependencies
-        id: deps
-        with:
-          cache-pnpm-verification: ${{ matrix.cache }}
-      - name: Validate treatment and frozen install
-        env:
-          CACHE_ENABLED: ${{ matrix.cache }}
-          CACHE_HIT: ${{ steps.deps.outputs.verification-cache-hit }}
-        run: |
-          if [ "$CACHE_ENABLED" = true ]; then test "$CACHE_HIT" = true; fi
-          git diff --exit-code -- package.json pnpm-lock.yaml pnpm-workspace.yaml
-          node -e "require.resolve('vitest'); require.resolve('electron')"
diff --git a/.github/workflows/daemon-relocation-spike.yml b/.github/workflows/daemon-relocation-spike.yml
deleted file mode 100644
index 25a88ae949f..00000000000
--- a/.github/workflows/daemon-relocation-spike.yml
+++ /dev/null
@@ -1,119 +0,0 @@
-name: Daemon Relocation Spike
-
-# Why: Phase 1 of the Windows update-survival work relocates the terminal
-# daemon's file closure out of the install dir so it survives an update. Before
-# implementing it in the app, this spike finds the MINIMAL set of packaged files
-# that a copied Orca.exe (run as node) needs to start the daemon and drive a
-# ConPTY session from a relocated directory, holding no install-dir file locks.
-# Runs from the feature branch via push (workflow_dispatch only works on the
-# default branch); main is never touched.
-
-on:
-  push:
-    branches:
-      - Jinwoo-H/windows-update-survival
-    paths:
-      - 'tests/tools/daemon-relocation-spike/**'
-      - '.github/workflows/daemon-relocation-spike.yml'
-  workflow_dispatch: {}
-
-permissions:
-  contents: read
-
-concurrency:
-  group: daemon-relocation-spike-${{ github.ref }}
-  cancel-in-progress: true
-
-jobs:
-  spike:
-    name: relocation file-set spike
-    runs-on: windows-2022
-    timeout-minutes: 40
-
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v6
-        with:
-          # This job only reads the repo to build/run the spike; it never pushes.
-          persist-credentials: false
-
-      - name: Setup Node.js
-        uses: actions/setup-node@v6
-        with:
-          node-version-file: package.json
-          check-latest: true
-
-      - name: Setup pnpm
-        uses: pnpm/setup@v2
-        with:
-          install: false
-
-      - name: Install dependencies
-        run: pnpm install --frozen-lockfile
-
-      # Why: cache the unpacked build keyed on the inputs that affect it, so
-      # spike-script-only edits skip the ~15 min electron-builder build.
-      - name: Cache unpacked build
-        id: cache-unpacked
-        uses: actions/cache@v4
-        with:
-          path: dist/win-unpacked
-          # mobile/ is in the key because beforePack requires out/mobile-web, whose bytes are the
-          # page built from the mobile install and the page trees below; a mobile-only change must
-          # miss this cache, not reuse a stale installer. config/** already covers the builder, the
-          # verifier and the manifest writer.
-          key: >-
-            win-unpacked-${{ hashFiles(
-              'src/**',
-              'config/**',
-              'package.json',
-              'pnpm-lock.yaml',
-              'mobile/package.json',
-              'mobile/pnpm-lock.yaml',
-              'mobile/app/**',
-              'mobile/src/**',
-              'mobile/web-entry/**'
-            ) }}
-
-      # Why here: electron-builder's beforePack requires out/mobile-web, and the bundle
-      # build resolves React Native and Expo from mobile/node_modules. Gated with the
-      # build it feeds, so a cache hit does not pay for an install nothing consumes.
-      - uses: ./.github/actions/install-mobile-dependencies
-        if: steps.cache-unpacked.outputs.cache-hit != 'true'
-
-      - name: Build unpacked app
-        if: steps.cache-unpacked.outputs.cache-hit != 'true'
-        run: pnpm run build:unpack
-
-      - name: Run relocation spike (all tiers)
-        shell: pwsh
-        run: |
-          New-Item -ItemType Directory -Force artifacts | Out-Null
-          $log = "artifacts/spike-output.log"
-          $tiers = @('full', 'no-gpu', 'minimal')
-          $any = $false
-          foreach ($tier in $tiers) {
-            "===== TIER: $tier =====" | Tee-Object -FilePath $log -Append
-            $work = Join-Path $env:RUNNER_TEMP "spike-$tier"
-            # --keep-work-dir so the per-tier daemon stdout/stderr logs survive
-            # for the artifact upload (the spike otherwise removes work-dir),
-            # which is what diagnoses a tier that fails to reach ready.
-            node tests/tools/daemon-relocation-spike/spike.mjs `
-              --app-dir dist/win-unpacked `
-              --work-dir "$work" `
-              --tier $tier `
-              --keep-work-dir 2>&1 | Tee-Object -FilePath $log -Append
-            if ($LASTEXITCODE -eq 0) { $any = $true }
-          }
-          if (-not $any) { throw "No tier passed the relocation spike" }
-
-      - name: Upload spike output
-        if: always()
-        uses: actions/upload-artifact@v7
-        with:
-          name: daemon-relocation-spike-output
-          path: |
-            artifacts/spike-output.log
-            ${{ runner.temp }}/spike-*/**/*.log
-          retention-days: 7
-          if-no-files-found: warn
diff --git a/config/scripts/ci-closed-pr-cancellation.test.mjs b/config/scripts/ci-closed-pr-cancellation.test.mjs
index bb118b5a9a8..d6881ec348f 100644
--- a/config/scripts/ci-closed-pr-cancellation.test.mjs
+++ b/config/scripts/ci-closed-pr-cancellation.test.mjs
@@ -92,7 +92,6 @@ it('looks up exact PR groups without branch or head-SHA inference', async () =>
     'release-ref-validation-123',
     'docs-pr-123',
     'cloud-verify-refs/pull/123/merge',
-    'pnpm-verification-pilot-123',
     'win-orcad-serve-switch-e2e-123',
     'pi-provider-runtime-123',
     'coding-plan-contract-123-credentials',