Keep picker order in the Claude availableModels allowlist

The Claude adapter's availableModels allowlist rebuilt the picker in the order the models were listed in settings, overriding the family/version sort (Codex, which does not apply the allowlist, was already correct). Re-sort the filtered list with the picker comparator so the allowlist only restricts which models appear, not their order.

Generated-By: PostHog Code
Task-Id: ea8239ab-8fc1-46b7-8dc6-d3661caf8800

Author: Twixes

packages/agent/src/adapters/claude/session/model-config.test.ts

@@ -19,6 +19,18 @@ describe("applyAvailableModelsAllowlist", () => {
     ).toEqual(rawModelOptions);
   });
 
+  it("reorders the allowlist to the picker order instead of the listed order", () => {
+    expect(
+      applyAvailableModelsAllowlist(rawModelOptions, [
+        "claude-sonnet-4-6",
+        "claude-opus-4-8",
+      ]).options,
+    ).toEqual([
+      { value: "claude-opus-4-8", name: "Claude Opus 4.8" },
+      { value: "claude-sonnet-4-6", name: "Claude Sonnet 4.6" },
+    ]);
+  });
+
   it("switches the current model when the previous one is filtered out", () => {
     expect(
       applyAvailableModelsAllowlist(rawModelOptions, ["claude-sonnet-4-6"]),

packages/agent/src/adapters/claude/session/model-config.ts

@@ -1,4 +1,5 @@
 import type { SessionConfigSelectOption } from "@agentclientprotocol/sdk";
+import { compareModelsForPicker } from "../../../gateway-models";
 
 export interface ModelConfigOptions {
   currentModelId: string;
@@ -30,6 +31,9 @@ export function applyAvailableModelsAllowlist(
 
   if (filtered.length === 0) return modelOptions;
 
+  // The allowlist is a filter, not a display order: keep the picker's ordering.
+  filtered.sort((a, b) => compareModelsForPicker(a.value, b.value));
+
   const currentModelId = filtered.some(
     (o) => o.value === modelOptions.currentModelId,
   )