Backend
- setting/payment.go: introduce default `USDExchangeRate` (7.3)
- model/option.go:
• inject `USDExchangeRate` into `InitOptionMap`
• persist & sync value in `updateOptionMap`
- controller/misc.go: expose `usd_exchange_rate` via `/api/status`
Frontend
- OperationSetting.js & SettingsGeneral.js:
• extend state/inputs with `USDExchangeRate`
• add form field “美元汇率 (non-top-up rate, pricing only)”
- ModelPricing.js already consumes `status.usd_exchange_rate`; no change needed
API
- Administrators can update the rate via `PUT /api/option` (key: `USDExchangeRate`)
- All clients receive the latest rate through `GET /api/status`
This closes the end-to-end flow for displaying model prices in both USD and CNY based on a configurable exchange rate.
Backend
1. controller/channel.go
• Always hydrate `ChannelInfo` from DB in `UpdateChannel`, keeping `IsMultiKey` true so `MultiKeySize` is recalculated.
2. model/channel.go
• getKeys(): accept both newline-separated keys and JSON array (`[ {...}, {...} ]`).
• Update(): reuse new parser-logic to recalc `MultiKeySize`; prune stale indices in `MultiKeyStatusList`.
Frontend
1. pages/Channel/EditChannel.js
• `handleVertexUploadChange`
– Reset `vertexErroredNames` on every change so the “ignored files” prompt always re-appears.
– In single-key mode keep only the last file; in batch mode keep all valid files.
– Parse files, display “以下文件解析失败，已忽略：…”.
• Batch-toggle checkbox
– When switching from batch→single while multiple files are present, show a confirm dialog and retain only the first file (synchronises state, form and local caches).
• On opening the “new channel” side-sheet, clear `vertexErroredNames` to restore error prompts.
Result
• “已启用 x/x” count updates immediately after editing multi-key channels.
• Vertex-AI key upload works intuitively: proper error feedback, no duplicated files, and safe down-switch from batch to single mode.
This commit refactors the application's error handling mechanism by introducing a new standardized error type, `types.NewAPIError`. It also renames common JSON utility functions for better clarity.
Previously, internal error handling was tightly coupled to the `dto.OpenAIError` format. This change decouples the internal logic from the external API representation.
Key changes:
- A new `types.NewAPIError` struct is introduced to serve as a canonical internal representation for all API errors.
- All relay adapters (OpenAI, Claude, Gemini, etc.) are updated to return `*types.NewAPIError`.
- Controllers now convert the internal `NewAPIError` to the client-facing `OpenAIError` format at the API boundary, ensuring backward compatibility.
- Channel auto-disable/enable logic is updated to use the new standardized error type.
- JSON utility functions are renamed to align with Go's standard library conventions (e.g., `UnmarshalJson` -> `Unmarshal`, `EncodeJson` -> `Marshal`).
