Summary ------- 1. Vertex AI JSON key upload • Accept multiple `.json` files (drag & drop / click). • Parse each `fileInstance`; build valid key array. • Malformed files are skipped and collected into **one** toast message. • Upload list now仅displays valid files; form state (`vertex_files`) 同步保持. • On *Submit* keys are re-parsed to prevent async timing loss. 2. Multi-key mode stability • Added `multi_key_mode: "random"` to initial form values. • `Form.Select` becomes fully controlled (`value`/`onChange`). • Toggling the “multi-key mode” checkbox writes default / removes field, so `setValues(inputs)` no longer clears the user’s choice. 3. UX / compatibility tweaks • Preserve uploaded files when editing any other field. • Use `fileInstance` only – compatible with legacy Semi Upload API. • Removed redundant `limit` prop on `Form.Upload`. • Aggregated error handling avoids toast spam. Result ------ Channel creation/update now supports: • Reliable batch import of Vertex AI service-account keys. • Consistent retention of multi-key strategy (`random` / `polling`). • Cleaner, user-friendly error feedback.
