AI Gateway Go 0.10.0 源码快照 + 旗舰版需求规划报告

M0-M7 已完成:核心网关(身份/RBAC/TOTP/OIDC/SAML/Provider/配额/路由/内容策略/审计/定价)+ 资源市场(MCP/Skills/数字员工)。
含 22 个 PostgreSQL 迁移、管理端/门户端前端源码、OpenAPI 契约、部署 compose。

Co-Authored-By: Claude <noreply@anthropic.com>

migrations/000014_audit_usage.sql

@@ -0,0 +1,26 @@
+CREATE INDEX IF NOT EXISTS audit_events_recorded_at_idx
+    ON gateway.audit_events (recorded_at DESC);
+CREATE INDEX IF NOT EXISTS audit_events_api_key_time_idx
+    ON gateway.audit_events (api_key_id, recorded_at DESC)
+    WHERE api_key_id IS NOT NULL;
+CREATE INDEX IF NOT EXISTS audit_events_provider_model_time_idx
+    ON gateway.audit_events (provider_code, model, recorded_at DESC);
+
+CREATE TABLE IF NOT EXISTS gateway.usage_daily (
+    usage_date date NOT NULL,
+    api_key_id uuid NOT NULL REFERENCES gateway.api_keys(id),
+    provider_code text NOT NULL DEFAULT '',
+    model text NOT NULL DEFAULT '',
+    requests bigint NOT NULL DEFAULT 0 CHECK (requests >= 0),
+    failed_requests bigint NOT NULL DEFAULT 0 CHECK (failed_requests >= 0),
+    prompt_tokens bigint NOT NULL DEFAULT 0 CHECK (prompt_tokens >= 0),
+    completion_tokens bigint NOT NULL DEFAULT 0 CHECK (completion_tokens >= 0),
+    updated_at timestamptz NOT NULL DEFAULT clock_timestamp(),
+    PRIMARY KEY (usage_date, api_key_id, provider_code, model)
+);
+
+CREATE INDEX IF NOT EXISTS usage_daily_date_idx
+    ON gateway.usage_daily (usage_date DESC, provider_code, model);
+
+COMMENT ON TABLE gateway.usage_daily IS
+    'PostgreSQL daily usage aggregates produced asynchronously from gateway audit events.';