phsl / new-api

- render.js: Enhance getLobeHubIcon to parse dot‑chained props, e.g.:
  - OpenAI.Avatar.type={'platform'}
  - OpenRouter.Avatar.shape={'square'}
  - Parses booleans/numbers/strings and {…} wrappers; keeps the 2nd arg `size` unless overridden by chain props. Backward compatible.
- EditVendorModal.jsx: Update UI copy — simplify placeholder; document chain‑parameter examples in extra text with doc link.
- en.json: Fix invalid escape sequences in the new i18n string to satisfy linter.

No behavioral changes outside icon rendering; lints pass.