ci: remove sticky disk cache plumbing

.github/actions/setup-node-env/action.yml

@@ -19,10 +19,6 @@ inputs:
     description: Whether to install Bun alongside Node.
     required: false
     default: "true"
-  use-sticky-disk:
-    description: Request Blacksmith sticky-disk pnpm caching on trusted runs; pull_request runs fall back to actions/cache.
-    required: false
-    default: "false"
   install-deps:
     description: Whether to run pnpm install after environment setup.
     required: false
@@ -45,7 +41,6 @@ runs:
       with:
         pnpm-version: ${{ inputs.pnpm-version }}
         cache-key-suffix: ${{ inputs.cache-key-suffix }}
-        use-sticky-disk: ${{ inputs.use-sticky-disk }}
 
     - name: Setup Bun
       if: inputs.install-bun == 'true'

.github/actions/setup-pnpm-store-cache/action.yml

@@ -9,16 +9,12 @@ inputs:
     description: Suffix appended to the cache key.
     required: false
     default: "node24"
-  use-sticky-disk:
-    description: Deprecated no-op. Kept for workflow input compatibility; pnpm store caching uses actions/cache.
-    required: false
-    default: "false"
   use-restore-keys:
     description: Whether to use restore-keys fallback for actions/cache.
     required: false
     default: "true"
   use-actions-cache:
-    description: Whether to restore/save pnpm store with actions/cache, including pull_request fallback when sticky disks are disabled.
+    description: Whether to restore/save pnpm store with actions/cache.
     required: false
     default: "true"
 runs: