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https://gitee.com/wanwujie/sub2api
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7535e312e0
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)