feat(billing): 计费商业化重构(积分制)+ 团队差异化调价
统一计价引擎 apps/billing/pricing.py:1积分=¥0.1,平台成本(¥)与用户价(积分)双记账, 视频按火山真实 usage.total_tokens 结算(true-up,终结¥1/段倒贴)+ 首发×1.5毛利系数。 Team.price_multiplier 差异化调价(jimeng同款):挂牌价×系数两步HALF_UP取整,视频类 按下单时的价格/汇率快照结算(中途改配不影响在途任务)。 BillingConfig 单例(汇率/毛利系数/预留buffer,admin可调即刻生效)。存量数据 ×10 rescale 迁移(RunPython+atomic,MySQL 迁移不可中断重跑)。开户赠送归零(DEFAULT_TRIAL_CREDITS=0, 商业决策)。audit_billing 加 I9(卖亏审计)。271 条测试 + tsc/build 全绿。 Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
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@@ -18,6 +18,8 @@ class Project(TeamOwnedModel):
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product = models.ForeignKey("products.Product", on_delete=models.PROTECT, related_name="projects")
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status = models.CharField(max_length=32, choices=Status.choices, default=Status.DRAFT)
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current_stage = models.CharField(max_length=32, default="script")
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# ⚠️ 废弃休眠字段:从未有过写入路径与运行语义,单位未定义(积分制 rescale 有意未缩放它)。
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# 勿接入额度管控/展示;项目级限额请用 QuotaPolicy.project_limit。留列仅为免迁移。
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budget_limit = models.DecimalField(max_digits=12, decimal_places=2, null=True, blank=True)
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failure_reason = models.TextField(blank=True)
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metadata = models.JSONField(default=dict, blank=True)
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