fix(migration): inject root gitignore negative overrides for nested java env packages

Author: meltsufin

monorepo-migration/migrate.sh

@@ -382,6 +382,26 @@ if [ -d "$SOURCE_REPO_NAME/.github/workflows" ]; then
     COMMIT_COUNT=$((COMMIT_COUNT + 1))
 fi
 
+# 7.5c Inject root .gitignore negative overrides to protect Java package folders from env/ string collisions
+if [ -f ".gitignore" ]; then
+    echo "Injecting negative override allow rules into root .gitignore to protect Java env/ package namespaces..."
+    cat <<EOF >> ".gitignore"
+
+# Protect Java package folders from Python virtualenv env/ and ENV/ blanket collisions
+!**/src/main/java/**/env/
+!**/src/test/java/**/env/
+!**/src/main/proto/**/env/
+!**/src/test/proto/**/env/
+!**/src/main/java/**/ENV/
+!**/src/test/java/**/ENV/
+EOF
+    
+    echo "Committing root .gitignore negative overrides..."
+    git add .gitignore
+    git commit -n --no-gpg-sign -m "chore($SOURCE_REPO_NAME): inject gitignore negative overrides to shield java env packages"
+    COMMIT_COUNT=$((COMMIT_COUNT + 1))
+fi
+
 # 7.6 Update generation_config.yaml
 echo "Updating generation_config.yaml..."
 SOURCE_CONFIG="$SOURCE_REPO_NAME/generation_config.yaml"