fix: add react-vite/vanilla to CI matrix and correct workflow self-reference

- Add react-vite/vanilla scenario to PR-gate workflow matrix (Ring 1)
- Fix paths trigger to reference correct workflow filename

Author: cursoragent

.github/workflows/evals-pr-scenarios.yml

@@ -20,7 +20,7 @@ on:
       - 'skills/integration/**'
       - 'evals/**'
       - 'package.json'
-      - '.github/workflows/evals-pr.yml'
+      - '.github/workflows/evals-pr-scenarios.yml'
 
 # Run-once-per-ref semantics: a new push to the PR cancels the prior
 # run. PR-gate evals are deterministic against golden replays today,
@@ -58,6 +58,7 @@ jobs:
         # logic).
         scenario:
           - nextjs-app-router/vanilla
+          - react-vite/vanilla
     steps:
       - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
       - uses: pnpm/action-setup@fc06bc1257f339d1d5d8b3a19a8cae5388b55320 # v5.0.0