refactor: isolate legacy flags

packages/core/src/models-dev.ts

@@ -4,7 +4,6 @@ import { HttpClient, HttpClientRequest } from "effect/unstable/http"
 import { ModelsDev } from "@opencode-ai/schema/models-dev"
 import { Money } from "@opencode-ai/schema/money"
 import { Global } from "./global"
-import { Flag } from "./flag/flag"
 import { Flock } from "./util/flock"
 import { Hash } from "./util/hash"
 import { FSUtil } from "./fs-util"
@@ -18,8 +17,6 @@ import { ProviderV2 } from "./provider"
 export const CatalogModelStatus = Schema.Literals(["alpha", "beta", "deprecated"])
 export type CatalogModelStatus = typeof CatalogModelStatus.Type
 
-const USER_AGENT = `opencode/${InstallationChannel}/${InstallationVersion}/${Flag.OPENCODE_CLIENT}`
-
 type Cost = {
   readonly input: Money.USDPerMillionTokens
   readonly output: Money.USDPerMillionTokens
@@ -534,6 +531,7 @@ export const Options = Schema.Struct({
   url: Schema.optional(Schema.String),
   file: Schema.optional(Schema.String),
   fetch: Schema.optional(Schema.Boolean),
+  client: Schema.optional(Schema.String),
 })
 export type Options = typeof Options.Type
 
@@ -556,6 +554,7 @@ export const layer = (options?: Options) => Layer.effect(
 
     const source = options?.url ?? "https://models.dev"
     const fetch = options?.fetch ?? true
+    const userAgent = `opencode/${InstallationChannel}/${InstallationVersion}/${options?.client ?? "cli"}`
     const filepath = path.join(
       Global.Path.cache,
       source === "https://models.dev" ? "models.json" : `models-${Hash.fast(source)}.json`,
@@ -572,7 +571,7 @@ export const layer = (options?: Options) => Layer.effect(
 
     const fetchApi = Effect.fn("ModelsDev.fetchApi")(function* () {
       return yield* HttpClientRequest.get(`${source}/api.json`).pipe(
-        HttpClientRequest.setHeader("User-Agent", USER_AGENT),
+        HttpClientRequest.setHeader("User-Agent", userAgent),
         http.execute,
         Effect.flatMap((res) => res.text),
         Effect.timeout("10 seconds"),