v0.5.17: owner_email в companies + универсальный парсер токенов + jwt.decode fallback

sql/schema.sql

@@ -5,6 +5,7 @@ CREATE TABLE IF NOT EXISTS companies (
     client_id     VARCHAR(64) UNIQUE NOT NULL,
     name          VARCHAR(255),
     custom_limit  INTEGER DEFAULT NULL CHECK (custom_limit IS NULL OR custom_limit >= 0),
+    owner_email   TEXT DEFAULT NULL,
     created_at    TIMESTAMPTZ NOT NULL DEFAULT NOW(),
     updated_at    TIMESTAMPTZ NOT NULL DEFAULT NOW()
 );