Fix theme consistency, i18n completeness, CSS variable naming, and hardcoded strings

update-Nitrov3.sh

@@ -386,6 +386,7 @@ mv /var/log/emu/emulator.log /var/log/emu/\$file_name
 java -Dfile.encoding=UTF8 -Xmx2G -jar $jar
 EOJ
         chmod +x emulator; ok "Launch script updated"
+        cd "$SCRIPT_DIR"
         ROLLBACK_NEEDED=false
     else
         info "Emulator: already up to date"
@@ -396,6 +397,7 @@ update_renderer() {
     step 3 8 "Update Nitro_Render_V3"
     if git_update "$NITRO_RENDERER" "$NITRO_BRANCH"; then
         HAD_UPDATES=true; UPDATED_REPOS+=("Nitro_Render_V3")
+        cd "$NITRO_RENDERER"
         spinner_start "Installing deps..."
         yarn install --frozen-lockfile 2>&1 || { clean_node_modules && yarn install 2>&1; } || { spinner_stop fail; die "yarn install failed"; }
         spinner_stop ok; ok "Renderer dependencies installed"
@@ -408,6 +410,7 @@ update_client() {
     step 4 8 "Update & Build Nitro-V3"
     if git_update "$NITRO_CLIENT" "$NITRO_BRANCH"; then
         HAD_UPDATES=true; NITRO_BUILT=true; UPDATED_REPOS+=("Nitro-V3")
+        cd "$NITRO_CLIENT"
         spinner_start "Installing deps..."
         yarn install --frozen-lockfile 2>&1 || { clean_node_modules && yarn install 2>&1; } || { spinner_stop fail; die "yarn install failed"; }
         spinner_stop ok