fix: ensure gpt-5.2-codex has variants

packages/opencode/src/plugin/codex.ts

@@ -1,6 +1,7 @@
 import type { Hooks, PluginInput } from "@opencode-ai/plugin"
 import { Log } from "../util/log"
 import { OAUTH_DUMMY_KEY } from "../auth"
+import { ProviderTransform } from "../provider/transform"
 
 const log = Log.create({ service: "plugin.codex" })
 
@@ -321,7 +322,7 @@ export async function CodexAuthPlugin(input: PluginInput): Promise<Hooks> {
         }
 
         if (!provider.models["gpt-5.2-codex"]) {
-          provider.models["gpt-5.2-codex"] = {
+          const model = {
             id: "gpt-5.2-codex",
             providerID: "openai",
             api: {
@@ -337,13 +338,18 @@ export async function CodexAuthPlugin(input: PluginInput): Promise<Hooks> {
               toolcall: true,
               input: { text: true, audio: false, image: true, video: false, pdf: false },
               output: { text: true, audio: false, image: false, video: false, pdf: false },
+              interleaved: false,
             },
             cost: { input: 0, output: 0, cache: { read: 0, write: 0 } },
             limit: { context: 400000, output: 128000 },
-            status: "active",
+            status: "active" as const,
             options: {},
             headers: {},
+            release_date: "2025-12-18",
+            variants: {} as Record<string, Record<string, any>>,
           }
+          model.variants = ProviderTransform.variants(model)
+          provider.models["gpt-5.2-codex"] = model
         }
 
         // Zero out costs for Codex (included with ChatGPT subscription)

packages/opencode/src/provider/transform.ts

@@ -318,7 +318,7 @@ export namespace ProviderTransform {
         // https://v5.ai-sdk.dev/providers/ai-sdk-providers/openai
         if (id === "gpt-5-pro") return {}
         const openaiEfforts = iife(() => {
-          if (id.includes("codex")) return WIDELY_SUPPORTED_EFFORTS
+          if (id.includes("codex") && !id.includes("5.2")) return WIDELY_SUPPORTED_EFFORTS
           const arr = [...WIDELY_SUPPORTED_EFFORTS]
           if (id.includes("gpt-5-") || id === "gpt-5") {
             arr.unshift("minimal")