allow_user_refund:
- Add allow_user_refund field to PaymentProviderInstance ent schema
- Migration 103: ALTER TABLE payment_provider_instances ADD COLUMN
- Cascade logic: disabling refund_enabled auto-disables allow_user_refund
- User refund validation: check provider instance allows user refund
- Admin refund validation: check provider instance allows admin refund
- Subscription refund: deduct days on refund, rollback on failure
- New endpoint: GET /payment/orders/refund-eligible-providers
- Frontend: ToggleSwitch in ProviderCard/Dialog, cascade in SettingsView
Wildcard matching:
- Change findPricingForModel from "longest prefix wins" to "config order
priority (first match wins)", aligning with channel service behavior
- Fix errcheck: handle Write/Encode return values in brave_test.go
- Fix errcheck: defer resp.Body.Close() with _ assignment in tavily.go
- Fix gofmt: payment.go, channel.go, payment_config_providers.go
- Fix unused: remove dead decodeURLValue in easypay.go
- Restore shouldFallbackGeminiModel function (deleted during cherry-pick)
- Add missing balanceNotifyService param to NewGatewayService in test
- Fix platform default test expectation (empty stays empty)
- Fix wildcard pricing test (longest prefix wins, not config order)
- Fix subscription group test (SUBSCRIPTION_REPOSITORY_UNAVAILABLE)
P0: fix wildcard matching test assertion (config order, not longest prefix)
P0: add TotalRecharged to auth cache snapshot (v5) for percentage threshold
P1: move pricing rules into per-platform sections in ChannelsView
P1: populate account name cache when editing existing channel rules
P1: sanitize email subject headers to prevent SMTP injection
P1: make Redis INCR+EXPIRE idempotent for rate limiting
P1: deep copy FeaturesConfig in Channel.Clone()
P2: clean up stale email="" placeholder comments
P2: replace log.Printf with slog in email_service.go
Allow channels to configure independent model pricing for account
statistics cost calculation, decoupled from user billing.
Backend:
- Migration 101: channels.apply_pricing_to_account_stats toggle,
channel_account_stats_pricing_rules/model_pricing tables,
usage_logs.account_stats_cost column
- resolveAccountStatsCost: match rules by group/account, then channel
pricing, fallback to original formula when unconfigured
- Integrate into both GatewayService.recordUsageCore and
OpenAIGatewayService.RecordUsage
- Update 8 account stats SQL queries to use
COALESCE(account_stats_cost, total_cost) * account_rate_multiplier
- 23 unit tests for matching, pricing lookup, and cost calculation
Frontend:
- Channel edit dialog: toggle + custom rules UI with group/account
multi-select and pricing entry cards
- API types and i18n (zh/en)
