feat: add sub2api source compatibility

web/src/app/(admin)/admin/settings/page.tsx

@@ -40,7 +40,7 @@ const emptySettings: AdminSettings = {
     },
     private: { channels: [], promptSync: { enabled: true, cron: "*/5 * * * *" }, auth: { linuxDo: { clientId: "", clientSecret: "" } } },
 };
-const emptyChannel: AdminModelChannel = { protocol: "openai", name: "", baseUrl: "", apiKey: "", models: [], weight: 1, enabled: true, remark: "" };
+const emptyChannel: AdminModelChannel = { protocol: "openai", compatibility: "openai", name: "", baseUrl: "", apiKey: "", models: [], weight: 1, enabled: true, remark: "", requestOptions: { imageResponseFormat: "b64_json" } };
 
 type SettingsTabKey = "public" | "private";
 type EditorMode = "visual" | "json";
@@ -467,15 +467,17 @@ export default function AdminSettingsPage() {
                                                     dataIndex: "credits",
                                                     width: 220,
                                                     render: (_, item) => (
-                                                        <InputNumber
-                                                            min={0}
-                                                            step={1}
-                                                            precision={0}
-                                                            className="!w-full"
-                                                            value={item.credits}
-                                                            addonAfter="点"
-                                                            onChange={(value) => setModelCost(form, setModelCosts, item.model, Number(value) || 0)}
-                                                        />
+                                                        <Space.Compact className="!w-full">
+                                                            <InputNumber
+                                                                min={0}
+                                                                step={1}
+                                                                precision={0}
+                                                                className="!w-full"
+                                                                value={item.credits}
+                                                                onChange={(value) => setModelCost(form, setModelCosts, item.model, Number(value) || 0)}
+                                                            />
+                                                            <Button disabled>点</Button>
+                                                        </Space.Compact>
                                                     ),
                                                 },
                                             ]}
@@ -558,6 +560,7 @@ export default function AdminSettingsPage() {
                                     columns={[
                                         { title: "名称", dataIndex: "name", render: (value) => value || "未命名渠道" },
                                         { title: "协议", dataIndex: "protocol", width: 96, render: (value) => <Tag>{value || "openai"}</Tag> },
+                                        { title: "兼容", dataIndex: "compatibility", width: 110, render: (value) => <Tag color={value === "sub2api" ? "blue" : "default"}>{value === "sub2api" ? "Sub2API" : "OpenAI"}</Tag> },
                                         { title: "状态", dataIndex: "enabled", width: 96, render: (value) => <Tag color={value ? "success" : "default"}>{value ? "已启用" : "已停用"}</Tag> },
                                         {
                                             title: "模型",
@@ -640,6 +643,20 @@ export default function AdminSettingsPage() {
                                     <Select options={[{ label: "OpenAI", value: "openai" }]} />
                                 </Form.Item>
                             </Col>
+                            <Col span={12}>
+                                <Form.Item name="compatibility" label="接口兼容模式" extra="选择 Sub2API 后，图片请求默认使用 URL 返回格式，Base URL 仍填写 Sub2API 的 OpenAI 兼容地址。">
+                                    <Select
+                                        options={[
+                                            { label: "OpenAI 兼容", value: "openai" },
+                                            { label: "Sub2API", value: "sub2api" },
+                                        ]}
+                                        onChange={(value) => {
+                                            if (value === "sub2api") channelForm.setFieldValue(["requestOptions", "imageResponseFormat"], "url");
+                                            if (value === "openai") channelForm.setFieldValue(["requestOptions", "imageResponseFormat"], "b64_json");
+                                        }}
+                                    />
+                                </Form.Item>
+                            </Col>
                             <Col span={12}>
                                 <Form.Item name="weight" label="权重">
                                     <InputNumber min={1} step={1} className="!w-full" />
@@ -670,6 +687,16 @@ export default function AdminSettingsPage() {
                                     </Space.Compact>
                                 </Form.Item>
                             </Col>
+                            <Col span={24}>
+                                <Form.Item name={["requestOptions", "imageResponseFormat"]} label="图片返回格式" extra="Sub2API 推荐 url；OpenAI 官方也支持 b64_json。前端两种返回都能解析。">
+                                    <Select
+                                        options={[
+                                            { label: "URL（推荐 Sub2API）", value: "url" },
+                                            { label: "Base64 JSON", value: "b64_json" },
+                                        ]}
+                                    />
+                                </Form.Item>
+                            </Col>
                             <Col span={24}>
                                 <Form.Item name="remark" label="备注">
                                     <Input.TextArea rows={3} />
@@ -870,8 +897,11 @@ function normalizePrivateSetting(setting: Partial<AdminSettings["private"]> = {}
 }
 
 function normalizeChannel(item: Partial<AdminModelChannel> = {}): AdminModelChannel {
+    const compatibility = item.compatibility === "sub2api" ? "sub2api" : "openai";
+    const imageResponseFormat = item.requestOptions?.imageResponseFormat === "url" || item.requestOptions?.imageResponseFormat === "b64_json" ? item.requestOptions.imageResponseFormat : compatibility === "sub2api" ? "url" : "b64_json";
     return {
         protocol: "openai",
+        compatibility,
         name: item.name || "",
         baseUrl: item.baseUrl || "",
         apiKey: item.apiKey || "",
@@ -879,6 +909,7 @@ function normalizeChannel(item: Partial<AdminModelChannel> = {}): AdminModelChan
         weight: Math.max(1, Number(item.weight) || 1),
         enabled: item.enabled !== false,
         remark: item.remark || "",
+        requestOptions: { imageResponseFormat },
     };
 }
 

web/src/services/api/admin.ts

@@ -158,6 +158,7 @@ export async function deleteAdminAsset(token: string, id: string) {
 
 export type AdminModelChannel = {
     protocol: "openai";
+    compatibility: "openai" | "sub2api";
     name: string;
     baseUrl: string;
     apiKey: string;
@@ -165,6 +166,9 @@ export type AdminModelChannel = {
     weight: number;
     enabled: boolean;
     remark: string;
+    requestOptions: {
+        imageResponseFormat: "b64_json" | "url";
+    };
 };
 
 export type AdminPublicModelChannelSettings = {