fix: install from local checkout and remove dead wo_deb_repo code

- wo_install() now detects local setup.py and installs from it instead
  of always pulling from PyPI/GitHub (which installs the old upstream)
- Removed unused wo_deb_repo variable branches in variables.py that
  caused NameError on unsupported codenames
- OLS repo URL uses codename directly for all distros (same format)

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

install

@@ -552,7 +552,9 @@ wo_install() {
         fi
     fi
 
-    if [ "$wo_branch" = "master" ]; then
+    if [ -f ./setup.py ]; then
+        /opt/wo/bin/pip install -U . --upgrade-strategy=eager
+    elif [ "$wo_branch" = "master" ]; then
         /opt/wo/bin/pip install -U wordops --upgrade-strategy=eager
     else
         /opt/wo/bin/pip install -I "git+https://github.com/WordOps/WordOps.git@$wo_branch#egg=wordops" --upgrade-strategy=eager