- Add ContextVarsMiddleware for automatic user_id/chat_id/username binding
via structlog contextvars (aiogram) and http_method/http_path (FastAPI)
- Use bound_contextvars() context manager instead of clear_contextvars()
to safely restore previous state instead of wiping all context
- Register ContextVarsMiddleware as outermost middleware (before GlobalError)
so all error logs include user context
- Replace structlog.get_logger() with structlog.get_logger(__name__) across
270 calls in 265 files for meaningful logger names
- Switch wrapper_class from BoundLogger to make_filtering_bound_logger()
for pre-processor level filtering (performance optimization)
- Migrate 1411 %-style positional arg logger calls to structlog kwargs
style across 161 files via AST script
- Migrate log_rotation_service.py from stdlib logging to structlog
- Add payment module prefixes to TelegramNotifierProcessor.IGNORED_LOGGER_PREFIXES
and ExcludePaymentFilter.PAYMENT_MODULES to prevent payment data leaking
to Telegram notifications and general log files
- Fix LoggingMiddleware: add from_user null-safety for channel posts,
switch time.time() to time.monotonic() for duration measurement
- Remove duplicate logger assignments in purchase.py, config.py,
inline.py, and admin/payments.py
- Add enabled flag to hide/show each button section in main menu
- Add per-locale custom labels (ru, en, ua, zh, fa) for button text
- Deep-copy nested labels dict in cache to prevent reference leaks
- Validate label entries from DB (type + locale key checks)
- Use selective merge in PATCH handler instead of blind .update()
Allow admins to set buttons to Telegram's default style with no color
override. Refactors style resolution from or-chain to explicit if/elif/else
so that 'default' does not fall through to global config or hardcoded defaults.
Add cabinet admin API for configuring button colors (primary/success/danger)
and custom emoji IDs per menu section (home, subscription, balance, referral,
support, info, admin). Styles are stored as JSON in system_settings and cached
in-process for fast resolution.
Style resolution chain: explicit param > per-section DB > global config > defaults.
