fix: force reinstall from local checkout to bypass pip cache

pip install -U skips reinstall when version number hasn't changed,
causing stale code to remain. Use --force-reinstall --no-cache-dir
to ensure local source is always installed fresh.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

install

@@ -553,7 +553,8 @@ wo_install() {
     fi
 
     if [ -f ./setup.py ]; then
-        /opt/wo/bin/pip install -U . --upgrade-strategy=eager
+        /opt/wo/bin/pip install --force-reinstall --no-cache-dir --no-deps . 2>/dev/null
+        /opt/wo/bin/pip install . --upgrade-strategy=eager
     elif [ "$wo_branch" = "master" ]; then
         /opt/wo/bin/pip install -U wordops --upgrade-strategy=eager
     else