feat(chat): expose model options config

src/chat/modelConfig.ts

@@ -0,0 +1,78 @@
+export type SupportedModel = string;
+export type AgentModelIcon = "bolt" | "sparkle";
+
+export type AgentModelOption = {
+  id: SupportedModel;
+  label: string;
+  description: string;
+  icon: AgentModelIcon;
+};
+
+export const defaultAgentModelOptions: AgentModelOption[] = [
+  {
+    id: "deepseek/deepseek-v4-flash",
+    label: "快速",
+    description: "快速回答和任务执行",
+    icon: "bolt",
+  },
+  {
+    id: "deepseek/deepseek-v4-pro",
+    label: "专家",
+    description: "探索、解决复杂任务",
+    icon: "sparkle",
+  },
+];
+
+export const defaultAgentModelOptionsJson = JSON.stringify(defaultAgentModelOptions);
+
+const isObjectRecord = (value: unknown): value is Record<string, unknown> =>
+  typeof value === "object" && value !== null && !Array.isArray(value);
+
+export const parseAgentModelOptions = (value: string): AgentModelOption[] => {
+  let parsed: unknown;
+  try {
+    parsed = JSON.parse(value);
+  } catch {
+    throw new Error("OPENCODE_MODEL_OPTIONS must be valid JSON");
+  }
+  if (!Array.isArray(parsed)) {
+    throw new Error("OPENCODE_MODEL_OPTIONS must be a JSON array");
+  }
+
+  const seen = new Set<string>();
+  return parsed.map((item, index) => {
+    if (!isObjectRecord(item)) {
+      throw new Error(`OPENCODE_MODEL_OPTIONS[${index}] must be an object`);
+    }
+    const id = typeof item.id === "string" ? item.id.trim() : "";
+    if (!id) {
+      throw new Error(`OPENCODE_MODEL_OPTIONS[${index}].id is required`);
+    }
+    if (seen.has(id)) {
+      throw new Error(`duplicate OPENCODE_MODEL_OPTIONS id: ${id}`);
+    }
+    seen.add(id);
+
+    const label =
+      typeof item.label === "string" && item.label.trim()
+        ? item.label.trim()
+        : id;
+    const description =
+      typeof item.description === "string" && item.description.trim()
+        ? item.description.trim()
+        : label;
+    const icon = item.icon === "bolt" || item.icon === "sparkle"
+      ? item.icon
+      : "sparkle";
+
+    return {
+      id,
+      label,
+      description,
+      icon,
+    };
+  });
+};
+
+export const getAgentModelIds = (options: AgentModelOption[]) =>
+  options.map((option) => option.id);