diff --git a/.github/workflows/plugin-validation.yml b/.github/workflows/plugin-validation.yml
index b09626dbce..d4071ef9cd 100644
--- a/.github/workflows/plugin-validation.yml
+++ b/.github/workflows/plugin-validation.yml
@@ -15,6 +15,14 @@ on:
       - "crates/tracedecay/tests/agent_suite/*plugin*"
       - "crates/tracedecay/tests/agent_suite/*skill*"
       - ".github/workflows/plugin-validation.yml"
+  pull_request:
+    paths:
+      - "plugin/**"
+      - "plugin/cursor-native-extension/**"
+      - "tests/fixtures/cursor-schemas/**"
+      - "crates/tracedecay/tests/agent_suite/*plugin*"
+      - "crates/tracedecay/tests/agent_suite/*skill*"
+      - ".github/workflows/plugin-validation.yml"
   workflow_dispatch:
 
 permissions:
@@ -32,9 +40,10 @@ jobs:
     steps:
       - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
 
-      - uses: actions/setup-node@a0853c24544627f65ddf259abe73b1d18a591444 # v5.0.0
+      - uses: actions/setup-node@820762786026740c76f36085b0efc47a31fe5020 # v7.0.0
         with:
           node-version: 22
+          # Auto package-manager cache probes `pnpm` before this job installs it.
           package-manager-cache: false
 
       - name: Install ajv-cli