ci: clear puppeteer cache before installing Chrome

puppeteer's postinstall (triggered while npx prepares the twd-cli env)
leaves a partial Chrome folder without the binary, which makes
`puppeteer browsers install chrome` fail. Same fix as twd-relay's e2e
workflow: wipe ~/.cache/puppeteer right before the install.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: kevinccbsg

.github/workflows/ci.yml

@@ -38,8 +38,11 @@ jobs:
       # The shared action installs Chrome via puppeteer@latest, which can
       # drift from twd-cli's pinned puppeteer (e.g. puppeteer 25 installs
       # Chrome 149 while twd-cli needs 148).
+      # puppeteer's postinstall (run while npx prepares the twd-cli env)
+      # leaves a partial Chrome folder that makes the install fail, so
+      # clear the cache right before installing.
       - name: Install Chrome for twd-cli
-        run: npx -y -p twd-cli -c 'puppeteer browsers install chrome'
+        run: npx -y -p twd-cli -c 'rm -rf ~/.cache/puppeteer && puppeteer browsers install chrome'
 
       - name: Run TWD tests
         uses: BRIKEV/twd-cli/.github/actions/run@main