Sub2API v1.0 - AI API 网关（二开初始版本，基于上游 Wei-Shaw/sub2api）

backend/migrations/192_group_profit_control.sql

@@ -0,0 +1,9 @@
+-- Per-group profit control for scheduling admission.
+-- Admission rule at request time: an account qualifies iff its cost multiplier
+-- U (accounts.rate_multiplier) satisfies U <= D * (1 - margin - buffer), where
+-- D is the requester's effective downstream multiplier at the request's
+-- pricing instant.
+ALTER TABLE groups
+    ADD COLUMN IF NOT EXISTS profit_control_enabled BOOLEAN NOT NULL DEFAULT FALSE,
+    ADD COLUMN IF NOT EXISTS profit_min_margin DECIMAL(10,4) NOT NULL DEFAULT 0,
+    ADD COLUMN IF NOT EXISTS profit_safety_buffer DECIMAL(10,4) NOT NULL DEFAULT 0;