* fix(items): validate item_number and skip receiving quantity default for temp items
- Validate item_number against alpha_numeric_punct rule, return JSON error on failure
- Add item_number_invalid language string
* i18n: reorder Items language keys and add item_number_invalid string
Add item_number_invalid translation across all locale files and
resort surrounding keys alphabetically to match key ordering
convention.
* PSR-12 refactoring.
- Change local variable to camelCase.
- Use single quote in language files.
* i18n: translate item_number_invalid string in ta, th, tl, zh-Hans
Item_number_invalid key had English placeholder text in Tamil,
Thai, Tagalog, Chinese Simplified language files. Translate to
match each locale.
* fix(items): use FormatRules for item_number validation
* refactor(items): use camelCase for variable names
* refactor(items): use camelCase for variable names in Items controller
- Add Calendar.php translation file for es-ES, nl-NL, de-DE
- Fill empty string translations in Common.php for de-DE, nl-NL, fr, it, pt-BR
- Translate UBL invoice strings (ubl_invoice, download_ubl, ubl_generation_failed) in Sales.php
- Add toggle_cost_and_profit in Reports.php for all languages
- Translate error_deleting_admin and error_updating_admin in Employees.php
- Translate csv_import_invalid_location error message in Items.php
- Update various missing translations for administrator, clerk, manager, dashboard, etc.
Languages updated: Spanish (es-ES), Dutch (nl-NL), German (de-DE), French (fr), Italian (it), Portuguese (pt-BR)
- Add csv_import_invalid_location to Items.php for CSV import validation
- Add error_deleting_admin and error_updating_admin to Employees.php for admin protection messages
Strings added with empty values so they fallback to English and show as untranslated in Weblate.
* Improve code style and PSR-12 compliance
- refactored code formatting to adhere to PSR-12 guidelines
- standardized coding conventions across the codebase
- added missing framework files and reverted markup changes
- reformatted arrays for enhanced readability
- updated language files for consistent styling and clarity
- minor miscellaneous improvements