* feat: add niteshift setup script for umami application
* refactor: switch dev setup to use dev server with hot reload instead of production build
* feat: add unified logging to development server output
Allow dev server logs to be written to both /tmp/umami-server.log and NITESHIFT_LOG_FILE when configured, enabling centralized log aggregation.
* refactor: simplify dev server logging to use single log file
Consolidate dual logging logic into single append to LOG_FILE,
simplify error reporting to reference the configured log file,
and remove unnecessary /tmp/umami-server.log references.
