- Split `p3` module into `p3_pardakht_novin` and `p3_sepehr` sub-modules
- Create `pardakht_novin_app` module with dedicated WebView and Hilt configuration
- Rename P3 services, printers, and models to be vendor-specific (e.g., `P3PardakhtNovinService`)
- Add `p3_pardakht_novin` and `p3_sepehr` product flavors to `tis_app` and `stage_app`
- Update project settings and build configurations to include the new modular structure
- Implement Sepehr-specific POS and Printer services in the new module