fix: добавить postbuild.js для копирования статических файлов

- scripts/postbuild.js: новый скрипт для копирования public и .next/static в .next/standalone
- package.json: запуск postbuild.js после npm run build
- scripts/install.sh: использование postbuild.js вместо ручного копирования
- scripts/manage.sh: использование postbuild.js вместо ручного копирования
- next.config.js: убран outputFileTracingRoot (не работает в Next.js 16)

Теперь стили и статические файлы должны корректно работать в продакшене

scripts/manage.sh

@@ -191,30 +191,16 @@ case "$1" in
             echo -e "${RED}The .next/standalone directory will not be created if the build fails.${NC}"
             exit 1
         fi
-        
-        # Ensure public directory and static files are accessible in standalone build
-        echo -e "${YELLOW}Setting up static files...${NC}"
-        if [ -d "$INSTALL_DIR/.next/standalone" ]; then
-            # Copy public directory to standalone (always update)
-            if [ -d "$INSTALL_DIR/public" ]; then
-                echo -e "${YELLOW}Copying public directory to standalone...${NC}"
-                rm -rf "$INSTALL_DIR/.next/standalone/public" 2>/dev/null || true
-                cp -r "$INSTALL_DIR/public" "$INSTALL_DIR/.next/standalone/public" 2>/dev/null || true
-            fi
-            # Copy .next/static to standalone/.next/static (always update)
-            if [ -d "$INSTALL_DIR/.next/static" ]; then
-                echo -e "${YELLOW}Copying .next/static to standalone...${NC}"
-                rm -rf "$INSTALL_DIR/.next/standalone/.next/static" 2>/dev/null || true
-                mkdir -p "$INSTALL_DIR/.next/standalone/.next"
-                cp -r "$INSTALL_DIR/.next/static" "$INSTALL_DIR/.next/standalone/.next/static" 2>/dev/null || true
-            else
-                echo -e "${RED}Warning: .next/static directory not found!${NC}"
-            fi
+
+        # Post-build script already copies public and .next/static to standalone directory
+        # Just verify the files are in place
+        echo -e "${YELLOW}Verifying standalone build...${NC}"
+        if [ -d "$INSTALL_DIR/.next/standalone/public" ] && [ -d "$INSTALL_DIR/.next/standalone/.next/static" ]; then
+            echo -e "${GREEN}✓ Static files are in place${NC}"
         else
-            echo -e "${RED}Error: .next/standalone directory not found!${NC}"
-            echo -e "${RED}This usually means the build failed or output: 'standalone' is not configured correctly.${NC}"
-            echo -e "${RED}Please check next.config.js and ensure the build completed successfully.${NC}"
-            exit 1
+            echo -e "${RED}Warning: Static files may be missing from standalone directory${NC}"
+            echo -e "${YELLOW}Running post-build script manually...${NC}"
+            node scripts/postbuild.js || true
         fi
         
         # Set ownership