backend/migrations/075_add_usage_log_upstream_model.sql

-- Add upstream_model field to usage_logs.
-- Stores the actual upstream model name when it differs from the requested model
-- (i.e., when model mapping is applied). NULL means no mapping was applied.
ALTER TABLE usage_logs ADD COLUMN IF NOT EXISTS upstream_model VARCHAR(100);
fix: resolve P0/P1 code quality issues P0 fixes: - ModelError.Is(): use exact matching instead of substring contains() - shouldClearStickySession: add context param for cancellation/tracing P1 fixes: - TODO stubs: return 501 Not Implemented errors - validateInstanceSignature: deduplicate to shared validateCodeSignature() - Error messages: standardize to English only - http.go: remove pseudo if-else with duplicate branches 2026-03-31 11:39:18 +08:00			`-- Add upstream_model field to usage_logs.`
			`-- Stores the actual upstream model name when it differs from the requested model`
			`-- (i.e., when model mapping is applied). NULL means no mapping was applied.`
			`ALTER TABLE usage_logs ADD COLUMN IF NOT EXISTS upstream_model VARCHAR(100);`