Prestige Barber Club v4.42.3 - Build & Deep Audit Report
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Scope:
- Central default bonus date period settings for Capster, Cashier, Other Employees.
- Choices: Active Day, Active Week, Last 14 Days, Last 1 Month.
- Public/internal bonus pages and legacy bonus modules audited for consistent date behavior.

Applied modules:
1. public_staff_bonus.php (Capster/Cashier public view)
2. staff_revenue.php (Capster/Cashier internal revenue & bonus)
3. bonuses.php (Capster bonus)
4. product_cashier_bonus.php (Cashier product bonus)
5. cashier_membership_bonus.php (Cashier membership bonus)
6. staff_earnings.php (Capster/Other Employee earnings)
7. export.php (bonus exports when dates are not explicitly supplied)
8. settings.php (central Branding & System configuration)

Date definitions:
- Active Day: today -> today.
- Active Week: Monday of current week -> today.
- Last 14 Days: today plus previous 13 days (14 calendar dates inclusive).
- Last 1 Month: same calendar day one month earlier -> today, clamped to the prior month's last valid day for 29/30/31 edge cases.

Audit fixes included:
- Switching staff kind resets empty date controls so the newly selected kind's default period is used.
- Paying Product Cashier Bonus preserves current date filter.
- Paying Cashier Membership Bonus preserves date/cashier/status filters.
- Capster bonus filtering uses source transaction date consistently.
- Product Cashier Bonus filtering uses source transaction date consistently.
- Fixed unsafe staff_revenue.php kind read that could access an undefined $_GET['kind'] on first load.
- Manual date filters always override Branding defaults.
- No destructive data migration; three settings are inserted with INSERT IGNORE and default to active_day.

Validation:
- Full PHP syntax lint: 215 PHP files, 0 syntax errors.
- Upgrade is idempotent via ensure_v4423_schema().
- Existing v4.42.2 behavior remains compatible because all three new settings default to Active Day.
- ZIP integrity verified after packaging (see build process).

Environment limitation:
- No live production MySQL/browser transaction was executed in this build container. Validation is static code/package audit plus PHP syntax checks.