backend/migrations/077_add_usage_log_requested_model.sql

-- Add requested_model field to usage_logs for normalized request/upstream model tracking.
-- NULL means historical rows written before requested_model dual-write was introduced.
ALTER TABLE usage_logs ADD COLUMN IF NOT EXISTS requested_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 requested_model field to usage_logs for normalized request/upstream model tracking.`
			`-- NULL means historical rows written before requested_model dual-write was introduced.`
			`ALTER TABLE usage_logs ADD COLUMN IF NOT EXISTS requested_model VARCHAR(100);`