diff --git a/src/components/AgentProgressLine.tsx b/src/components/AgentProgressLine.tsx
index abdff603..7e0d26e6 100644
--- a/src/components/AgentProgressLine.tsx
+++ b/src/components/AgentProgressLine.tsx
@@ -1,5 +1,4 @@
 import { c as _c } from "react-compiler-runtime";
-import * as React from 'react';
 import { Box, Text } from '../ink.js';
 import { formatNumber } from '../utils/format.js';
 import type { Theme } from '../utils/theme.js';
@@ -20,7 +19,7 @@ type Props = {
   lastToolInfo?: string | null;
   hideType?: boolean;
 };
-export function AgentProgressLine(t0) {
+export function AgentProgressLine(t0: Props) {
   const $ = _c(32);
   const {
     agentType,
diff --git a/src/components/App.tsx b/src/components/App.tsx
index 0113fb3c..b4ab803e 100644
--- a/src/components/App.tsx
+++ b/src/components/App.tsx
@@ -1,5 +1,5 @@
 import { c as _c } from "react-compiler-runtime";
-import React from 'react';
+import type { ReactNode } from 'react';
 import { FpsMetricsProvider } from '../context/fpsMetrics.js';
 import { StatsProvider, type StatsStore } from '../context/stats.js';
 import { type AppState, AppStateProvider } from '../state/AppState.js';
@@ -9,14 +9,14 @@ type Props = {
   getFpsMetrics: () => FpsMetrics | undefined;
   stats?: StatsStore;
   initialState: AppState;
-  children: React.ReactNode;
+  children: ReactNode;
 };
 
 /**
  * Top-level wrapper for interactive sessions.
  * Provides FPS metrics, stats context, and app state to the component tree.
  */
-export function App(t0) {
+export function App(t0: Props) {
   const $ = _c(9);
   const {
     getFpsMetrics,
diff --git a/src/components/ApproveApiKey.tsx b/src/components/ApproveApiKey.tsx
index 41cfc9ca..fa92d1cf 100644
--- a/src/components/ApproveApiKey.tsx
+++ b/src/components/ApproveApiKey.tsx
@@ -1,5 +1,4 @@
 import { c as _c } from "react-compiler-runtime";
-import React from 'react';
 import { Text } from '../ink.js';
 import { saveGlobalConfig } from '../utils/config.js';
 import { Select } from './CustomSelect/index.js';
@@ -8,7 +7,7 @@ type Props = {
   customApiKeyTruncated: string;
   onDone(approved: boolean): void;
 };
-export function ApproveApiKey(t0) {
+export function ApproveApiKey(t0: Props) {
   const $ = _c(17);
   const {
     customApiKeyTruncated,
@@ -16,7 +15,7 @@ export function ApproveApiKey(t0) {
   } = t0;
   let t1;
   if ($[0] !== customApiKeyTruncated || $[1] !== onDone) {
-    t1 = function onChange(value) {
+    t1 = function onChange(value: 'yes' | 'no') {
       bb2: switch (value) {
         case "yes":
           {
@@ -102,7 +101,7 @@ export function ApproveApiKey(t0) {
   }
   let t8;
   if ($[11] !== onChange) {
-    t8 = <Select defaultValue="no" defaultFocusValue="no" options={t7} onChange={value_0 => onChange(value_0 as 'yes' | 'no')} onCancel={() => onChange("no")} />;
+    t8 = <Select defaultValue="no" defaultFocusValue="no" options={t7} onChange={(value_0: string) => onChange(value_0 as 'yes' | 'no')} onCancel={() => onChange("no")} />;
     $[11] = onChange;
     $[12] = t8;
   } else {
diff --git a/src/components/EffortPicker.tsx b/src/components/EffortPicker.tsx
index 2e86509e..ac8ee416 100644
--- a/src/components/EffortPicker.tsx
+++ b/src/components/EffortPicker.tsx
@@ -1,18 +1,15 @@
-import React, { useState } from 'react'
+import type { ReactNode } from 'react'
 import { Box, Text } from '../ink.js'
 import { useMainLoopModel } from '../hooks/useMainLoopModel.js'
 import { useAppState, useSetAppState } from '../state/AppState.js'
-import type { EffortLevel, OpenAIEffortLevel } from '../utils/effort.js'
+import type { EffortLevel } from '../utils/effort.js'
 import {
   getAvailableEffortLevels,
   getDisplayedEffortLevel,
   getEffortLevelDescription,
   getEffortLevelLabel,
-  getEffortValueDescription,
   modelSupportsEffort,
   modelUsesOpenAIEffort,
-  standardEffortToOpenAI,
-  isOpenAIEffortLevel,
 } from '../utils/effort.js'
 import { getAPIProvider } from '../utils/model/providers.js'
 import { getReasoningEffortForModel } from '../services/api/providerConfig.js'
@@ -22,7 +19,7 @@ import { KeyboardShortcutHint } from './design-system/KeyboardShortcutHint.js'
 import { Byline } from './design-system/Byline.js'
 
 type EffortOption = {
-  label: React.ReactNode
+  label: ReactNode
   value: string
   description: string
   isAvailable: boolean
@@ -44,8 +41,6 @@ export function EffortPicker({ onSelect, onCancel }: Props) {
 
   // For OpenAI/Codex, get the model's default reasoning effort
   const modelReasoningEffort = usesOpenAIEffort ? getReasoningEffortForModel(model) : undefined
-  const defaultEffortForModel = modelReasoningEffort || currentDisplayedLevel
-
   const options: EffortOption[] = [
     {
       label: <EffortOptionLabel level="auto" text="Auto" isCurrent={false} />,
diff --git a/src/components/PromptInput/IssueFlagBanner.tsx b/src/components/PromptInput/IssueFlagBanner.tsx
index 38899677..ef503207 100644
--- a/src/components/PromptInput/IssueFlagBanner.tsx
+++ b/src/components/PromptInput/IssueFlagBanner.tsx
@@ -1,7 +1,3 @@
-import * as React from 'react';
-import { FLAG_ICON } from '../../constants/figures.js';
-import { Box, Text } from '../../ink.js';
-
 /**
  * ANT-ONLY: Banner shown in the transcript that prompts users to report
  * issues via /issue. Appears when friction is detected in the conversation.