i18n(zh-CN): complete Chinese translations for all UI strings (#2436)
Add 551 new translations covering previously untranslated areas (landing, CLI tools, MITM, skills, combos, token-saver, OIDC, relay deploy, provider details, proxy pools, quota tracker, OAuth modals). Total: 838 -> 1389 entries. Co-authored-by: Cursor <cursoragent@cursor.com>
This commit is contained in: