diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 6e110f7d6..546feed4a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -411,6 +411,7 @@ jobs:
         with:
           pnpm-version: "10.23.0"
           cache-key-suffix: "node22"
+          use-sticky-disk: "true"
           use-restore-keys: "false"
           use-actions-cache: "false"
 
@@ -431,7 +432,7 @@ jobs:
           which node
           node -v
           pnpm -v
-          pnpm install --frozen-lockfile --ignore-scripts=false --config.engine-strict=false --config.enable-pre-post-scripts=true || pnpm install --frozen-lockfile --ignore-scripts=false --config.engine-strict=false --config.enable-pre-post-scripts=true
+          pnpm install --frozen-lockfile --prefer-offline --ignore-scripts=false --config.engine-strict=false --config.enable-pre-post-scripts=true || pnpm install --frozen-lockfile --prefer-offline --ignore-scripts=false --config.engine-strict=false --config.enable-pre-post-scripts=true
 
       - name: Configure test shard (Windows)
         if: matrix.task == 'test'
@@ -446,10 +447,6 @@ jobs:
       - name: Run ${{ matrix.task }} (${{ matrix.runtime }})
         run: ${{ matrix.command }}
 
-      - name: Prune pnpm store (Windows cache hygiene)
-        if: always()
-        run: pnpm store prune || true
-
   # Consolidated macOS job: runs TS tests + Swift lint/build/test sequentially
   # on a single runner. GitHub limits macOS concurrent jobs to 5 per org;
   # running 4 separate jobs per PR (as before) starved the queue. One job