fix(mobile): scope reasoning options to model

Generated-By: PostHog Code
Task-Id: c1bbe3cf-742b-4b24-bf96-d11a18b4cf22

Author: richardsolomou

apps/mobile/src/app/task/index.tsx

@@ -50,6 +50,7 @@ import {
   DEFAULT_REASONING,
   EXECUTION_MODES,
   type ExecutionMode,
+  getReasoningLevels,
   MODELS,
   modeLabel,
   modelLabel,
@@ -625,7 +626,7 @@ export default function NewTaskScreen() {
                         icon={
                           <BrainIcon size={14} color={themeColors.gray[11]} />
                         }
-                        label={reasoningLabel(reasoning)}
+                        label={reasoningLabel(reasoning, model)}
                         onPress={() => setReasoningSheetOpen(true)}
                       />
                     ) : null}
@@ -756,7 +757,7 @@ export default function NewTaskScreen() {
           usePreferencesStore.getState().setLastUsedReasoningEffort(next);
         }}
         onClose={() => setReasoningSheetOpen(false)}
-        options={REASONING_LEVELS.map((reasoningLevel) => ({
+        options={getReasoningLevels(model).map((reasoningLevel) => ({
           value: reasoningLevel.value,
           label: reasoningLevel.label,
           icon: <BrainIcon size={16} color={themeColors.gray[11]} />,

apps/mobile/src/features/tasks/composer/TaskChatComposer.tsx

@@ -49,11 +49,11 @@ import {
   DEFAULT_REASONING,
   EXECUTION_MODES,
   type ExecutionMode,
+  getReasoningLevels,
   MODELS,
   modeLabel,
   modelLabel,
   modelSupportsReasoning,
-  REASONING_LEVELS,
   type ReasoningEffort,
   reasoningLabel,
 } from "./options";
@@ -382,7 +382,7 @@ export function TaskChatComposer({
                 {showReasoningPill ? (
                   <Pill
                     icon={<BrainIcon size={14} color={themeColors.gray[11]} />}
-                    label={reasoningLabel(reasoning)}
+                    label={reasoningLabel(reasoning, model)}
                     onPress={() => setReasoningSheetOpen(true)}
                   />
                 ) : null}
@@ -470,7 +470,7 @@ export function TaskChatComposer({
         value={reasoning}
         onChange={(v) => onReasoningChange(v as ReasoningEffort)}
         onClose={() => setReasoningSheetOpen(false)}
-        options={REASONING_LEVELS.map((r) => ({
+        options={getReasoningLevels(model).map((r) => ({
           value: r.value,
           label: r.label,
           icon: <BrainIcon size={16} color={themeColors.gray[11]} />,

apps/mobile/src/features/tasks/composer/options.test.ts

@@ -2,6 +2,7 @@ import { describe, expect, it } from "vitest";
 import {
   DEFAULT_MODEL,
   DEFAULT_REASONING,
+  getReasoningLevels,
   modelSupportsReasoning,
   REASONING_LEVELS,
 } from "./options";
@@ -24,4 +25,10 @@ describe("task composer options", () => {
     expect(modelSupportsReasoning("claude-opus-4-8")).toBe(true);
     expect(modelSupportsReasoning("claude-haiku-4-5")).toBe(false);
   });
+
+  it("limits reasoning options to the selected model", () => {
+    expect(
+      getReasoningLevels("claude-sonnet-4-6").map((option) => option.value),
+    ).toEqual(["low", "medium", "high"]);
+  });
 });

apps/mobile/src/features/tasks/composer/options.ts

@@ -81,12 +81,17 @@ export const DEFAULT_MODEL =
   DEFAULT_GATEWAY_MODEL;
 export const DEFAULT_REASONING: ReasoningEffort = DEFAULT_REASONING_EFFORT;
 
-export const REASONING_LEVELS: {
+export function getReasoningLevels(model: string): {
   value: ReasoningEffort;
   label: string;
-}[] = (getReasoningEffortOptions("claude", DEFAULT_MODEL) ?? []).map(
-  (option) => ({ value: option.value, label: option.name }),
-);
+}[] {
+  return (getReasoningEffortOptions("claude", model) ?? []).map((option) => ({
+    value: option.value,
+    label: option.name,
+  }));
+}
+
+export const REASONING_LEVELS = getReasoningLevels(DEFAULT_MODEL);
 
 export function modelLabel(value: string): string {
   return MODELS.find((m) => m.value === value)?.label ?? value;
@@ -96,8 +101,10 @@ export function modeLabel(value: ExecutionMode): string {
   return EXECUTION_MODES.find((m) => m.value === value)?.label ?? value;
 }
 
-export function reasoningLabel(value: ReasoningEffort): string {
-  return REASONING_LEVELS.find((r) => r.value === value)?.label ?? value;
+export function reasoningLabel(value: ReasoningEffort, model: string): string {
+  return (
+    getReasoningLevels(model).find((r) => r.value === value)?.label ?? value
+  );
 }
 
 export function modelSupportsReasoning(value: string): boolean {