diff --git a/.eslintrc.js b/.eslintrc.js
index 187894b..8d1915f 100644
--- a/.eslintrc.js
+++ b/.eslintrc.js
@@ -1,4 +1,20 @@
 module.exports = {
   root: true,
   extends: '@react-native',
+  rules: {
+    'react-native/no-inline-styles': 'off',
+    'react/no-unstable-nested-components': ['warn', { allowAsProps: true }],
+    '@typescript-eslint/no-unused-vars': [
+      'warn',
+      { argsIgnorePattern: '^_', varsIgnorePattern: '^_' },
+    ],
+  },
+  overrides: [
+    {
+      files: ['__tests__/**/*', 'jest.setup.js'],
+      env: {
+        jest: true,
+      },
+    },
+  ],
 };
diff --git a/jest.config.js b/jest.config.js
index 8eb675e..84adba9 100644
--- a/jest.config.js
+++ b/jest.config.js
@@ -1,3 +1,7 @@
 module.exports = {
   preset: 'react-native',
+  transformIgnorePatterns: [
+    'node_modules/(?!(jest-)?react-native|@react-native|@react-native-community|@react-navigation|lucide-react-native)/',
+  ],
+  setupFiles: ['<rootDir>/jest.setup.js'],
 };
diff --git a/jest.setup.js b/jest.setup.js
new file mode 100644
index 0000000..90b13f7
--- /dev/null
+++ b/jest.setup.js
@@ -0,0 +1,13 @@
+jest.mock('@react-native-async-storage/async-storage', () =>
+  require('@react-native-async-storage/async-storage/jest/async-storage-mock'),
+);
+
+jest.mock('@notifee/react-native', () =>
+  require('@notifee/react-native/jest-mock'),
+);
+
+jest.mock('react-native-share-menu', () => ({
+  getInitialShare: jest.fn(() => Promise.resolve(null)),
+  addNewShareListener: jest.fn(),
+  clearSharedText: jest.fn(),
+}));
diff --git a/src/components/AddTaskBottomSheet.tsx b/src/components/AddTaskBottomSheet.tsx
index 8dc7a27..38fb629 100644
--- a/src/components/AddTaskBottomSheet.tsx
+++ b/src/components/AddTaskBottomSheet.tsx
@@ -63,6 +63,7 @@ export default function AddTaskBottomSheet({ visible, onClose, onSave, initialTa
         } else if (isMounted) {
             closeSheet();
         }
+        // eslint-disable-next-line react-hooks/exhaustive-deps
     }, [visible, initialTaskData]);
 
     const closeSheet = () => {
diff --git a/src/components/BottomSheet.tsx b/src/components/BottomSheet.tsx
index 36dbfd1..4a97237 100644
--- a/src/components/BottomSheet.tsx
+++ b/src/components/BottomSheet.tsx
@@ -12,7 +12,6 @@ import {
     PanResponder,
     StyleSheet,
     TouchableWithoutFeedback,
-    Dimensions,
     StyleProp,
     ViewStyle,
     KeyboardAvoidingView,
@@ -20,7 +19,7 @@ import {
     Easing,
 } from 'react-native';
 
-const { height: SCREEN_HEIGHT } = Dimensions.get('window');
+
 
 export interface BottomSheetProps {
     /** Height of the bottom sheet */
diff --git a/src/components/ChooseDestinationBottomSheet.tsx b/src/components/ChooseDestinationBottomSheet.tsx
index eb26118..560c7bd 100644
--- a/src/components/ChooseDestinationBottomSheet.tsx
+++ b/src/components/ChooseDestinationBottomSheet.tsx
@@ -40,6 +40,7 @@ export default function ChooseDestinationBottomSheet({ visible, onClose, onSelec
         } else if (isMounted) {
             closeSheet();
         }
+        // eslint-disable-next-line react-hooks/exhaustive-deps
     }, [visible]);
 
     const closeSheet = () => {
diff --git a/src/components/GlobalCelebration.tsx b/src/components/GlobalCelebration.tsx
index 9b039d6..6e5c741 100644
--- a/src/components/GlobalCelebration.tsx
+++ b/src/components/GlobalCelebration.tsx
@@ -27,7 +27,7 @@ export default function GlobalCelebration() {
         } else {
             setShowConfetti(false);
         }
-    }, [completedWhileAway, activeTaskId, tasks]);
+    }, [completedWhileAway, activeTaskId, tasks, setTaskStatus]);
 
     if (!completedWhileAway) return null;
 
diff --git a/src/components/PrivacyStatus.tsx b/src/components/PrivacyStatus.tsx
index f024e1d..bf2c30f 100644
--- a/src/components/PrivacyStatus.tsx
+++ b/src/components/PrivacyStatus.tsx
@@ -1,10 +1,9 @@
 import React from 'react';
 import { View, Text, StyleSheet, Animated } from 'react-native';
-import { Shield, ShieldCheck, Lock } from 'lucide-react-native';
+import { ShieldCheck } from 'lucide-react-native';
 import theme from '../data/color-theme';
 
 export const PrivacyStatus = () => {
-    const [isSecure, setIsSecure] = React.useState(true);
     const fadeAnim = React.useRef(new Animated.Value(0)).current;
 
     React.useEffect(() => {
diff --git a/src/components/TaskCard.tsx b/src/components/TaskCard.tsx
index 82ab278..17069b9 100644
--- a/src/components/TaskCard.tsx
+++ b/src/components/TaskCard.tsx
@@ -6,7 +6,6 @@ import {
     Animated,
     PanResponder,
     Dimensions,
-    Image,
     Linking,
 } from "react-native";
 import theme from "../data/color-theme";
diff --git a/src/components/TaskDetailsInfo.tsx b/src/components/TaskDetailsInfo.tsx
index 9c39f51..bf94850 100644
--- a/src/components/TaskDetailsInfo.tsx
+++ b/src/components/TaskDetailsInfo.tsx
@@ -19,9 +19,7 @@ import { extractYouTubeId, hideYouTubeUrl } from "../utils/youtube";
 import YouTubePreview from "./YouTubePreview";
 
 // ─── Status cycling helpers ────────────────────────────────────────────────────
-const STATUS_ORDER = ["to-do", "in-progress", "completed"] as const;
-type TaskStatus = (typeof STATUS_ORDER)[number];
-
+// Not using STATUS_ORDER and TaskStatus here as it is only used locally as array iteration keys
 type AdvanceCfg = { label: string; color: string; Icon: React.ReactNode };
 
 const getAdvanceCfg = (status: string): AdvanceCfg => {
diff --git a/src/components/YouTubePreview.tsx b/src/components/YouTubePreview.tsx
index 56c705e..18d643e 100644
--- a/src/components/YouTubePreview.tsx
+++ b/src/components/YouTubePreview.tsx
@@ -1,6 +1,6 @@
 import React, { useState, useEffect } from "react";
 import { View, Text, Image, Pressable, Linking } from "react-native";
-import { Play, Youtube } from "lucide-react-native";
+import { Play } from "lucide-react-native";
 import theme from "../data/color-theme";
 
 type Props = {
diff --git a/src/context/TimerContext.tsx b/src/context/TimerContext.tsx
index 0c5bb42..fbd367f 100644
--- a/src/context/TimerContext.tsx
+++ b/src/context/TimerContext.tsx
@@ -38,7 +38,7 @@ export function TimerProvider({ children }: { children: ReactNode }) {
             const dataToSave = customState || stateRef.current;
             const encrypted = encryptObject(dataToSave);
             await AsyncStorage.setItem(TIMER_STORAGE_KEY, encrypted);
-        } catch (error) { }
+        } catch { }
     };
 
     // Initial load
@@ -51,7 +51,7 @@ export function TimerProvider({ children }: { children: ReactNode }) {
                     if (!data) {
                         try {
                             data = JSON.parse(stored);
-                        } catch (e) {
+                        } catch {
                             data = null;
                         }
                     }
@@ -88,7 +88,7 @@ export function TimerProvider({ children }: { children: ReactNode }) {
                         }
                     }
                 }
-            } catch (error) { }
+            } catch { }
         };
         loadTimer();
     }, []);
diff --git a/src/hooks/useStreak.ts b/src/hooks/useStreak.ts
index b3434c0..dbdea00 100644
--- a/src/hooks/useStreak.ts
+++ b/src/hooks/useStreak.ts
@@ -70,7 +70,7 @@ export function useStreak(tasks: any[]) {
         if (!parsed) {
           try {
             parsed = JSON.parse(raw) as StreakLog;
-          } catch (e) {
+          } catch {
             parsed = null;
           }
         }
diff --git a/src/layouts/TasksScreen/TaskListContent.tsx b/src/layouts/TasksScreen/TaskListContent.tsx
index a8d76fb..d91b5d5 100644
--- a/src/layouts/TasksScreen/TaskListContent.tsx
+++ b/src/layouts/TasksScreen/TaskListContent.tsx
@@ -53,7 +53,7 @@ const groupTasksByDate = (tasks: any[]): TaskGroup[] => {
 
     // Build groups and sort: Today always first, then ascending by date
     return Array.from(groupMap.entries())
-        .map(([label, tasks]) => ({ label, tasks }))
+        .map(([label, groupTasks]) => ({ label, tasks: groupTasks }))
         .sort((a, b) => {
             const aKey = getLabelSortKey(a.label);
             const bKey = getLabelSortKey(b.label);
diff --git a/src/layouts/homeScreen/TodayRecentTasks.tsx b/src/layouts/homeScreen/TodayRecentTasks.tsx
index 635e4af..d18857b 100644
--- a/src/layouts/homeScreen/TodayRecentTasks.tsx
+++ b/src/layouts/homeScreen/TodayRecentTasks.tsx
@@ -1,5 +1,5 @@
-import React, { useState, useCallback } from "react";
-import { useNavigation, useFocusEffect } from "@react-navigation/native";
+import React, { useState } from "react";
+import { useNavigation } from "@react-navigation/native";
 import {
     Text,
     View,
@@ -24,7 +24,7 @@ import { useTaskManager } from "../../hooks/useTaskManager";
 
 function TodayRecentTasks() {
     const navigation = useNavigation<any>();
-    const { tasks, saveNewTask, toggleTaskComplete, deleteTask, advanceTaskStatus } = useTaskManager();
+    const { tasks, saveNewTask, deleteTask, advanceTaskStatus } = useTaskManager();
 
     const [selectedTask, setSelectedTask] = useState<any | null>(null);
     const [sheetVisible, setSheetVisible] = useState(false);
@@ -56,16 +56,7 @@ function TodayRecentTasks() {
         }
     };
 
-    const openTaskSheet = (task: any) => {
-        setSelectedTask(task);
-        setSheetVisible(true);
-        Animated.spring(slideAnim, {
-            toValue: 1,
-            useNativeDriver: true,
-            bounciness: 0,
-            speed: 14,
-        }).start();
-    };
+    // openTaskSheet removed since it's unused
 
     const closeTaskSheet = () => {
         Animated.timing(slideAnim, {
diff --git a/src/navigation/TabNavigator.tsx b/src/navigation/TabNavigator.tsx
index 9b87895..626eaf4 100644
--- a/src/navigation/TabNavigator.tsx
+++ b/src/navigation/TabNavigator.tsx
@@ -3,7 +3,7 @@ import HomeScreen from "../screens/HomeScreen";
 import TaskScreen from "../screens/TaskScreen";
 import BrainDumpScreen from "../screens/BrainDumpScreen";
 import theme from "../data/color-theme";
-import { LayoutDashboard, ListTodo, Lightbulb, Settings, Brain } from "lucide-react-native";
+import { LayoutDashboard, ListTodo, Settings, Brain } from "lucide-react-native";
 import { useSafeAreaInsets } from "react-native-safe-area-context";
 import SettingScreen from "../screens/SettingScreen";
 
diff --git a/src/screens/AnalyticsScreen.tsx b/src/screens/AnalyticsScreen.tsx
index f7d34d2..228d0ab 100644
--- a/src/screens/AnalyticsScreen.tsx
+++ b/src/screens/AnalyticsScreen.tsx
@@ -8,7 +8,6 @@ import {
     Target,
     TrendingUp,
     ListTodo,
-    BarChart2,
 } from "lucide-react-native";
 import theme from "../data/color-theme";
 import { useTaskManager } from "../hooks/useTaskManager";
diff --git a/src/screens/BrainDumpScreen.tsx b/src/screens/BrainDumpScreen.tsx
index 241e471..083fa29 100644
--- a/src/screens/BrainDumpScreen.tsx
+++ b/src/screens/BrainDumpScreen.tsx
@@ -1,8 +1,8 @@
-import { View, Text, TextInput, ScrollView, Pressable, KeyboardAvoidingView, Platform, Linking, Image, Animated, PanResponder, Dimensions, TouchableOpacity } from "react-native";
+import { View, Text, TextInput, ScrollView, Pressable, KeyboardAvoidingView, Platform, Linking, Animated, PanResponder, Dimensions } from "react-native";
 import { SafeAreaView } from "react-native-safe-area-context";
-import { useState, useCallback, useEffect, useRef } from "react";
+import { useState, useCallback, useRef } from "react";
 import AsyncStorage from "@react-native-async-storage/async-storage";
-import { Trash2, Plus, Brain, Sparkles, Play } from "lucide-react-native";
+import { Trash2, Plus, Brain, Sparkles } from "lucide-react-native";
 import { useFocusEffect } from "@react-navigation/native";
 import { encryptObject, decryptObject } from "../utils/security";
 import theme from "../data/color-theme";
@@ -40,7 +40,6 @@ const formatDate = (iso: string) => {
 export default function BrainDumpScreen() {
     const [entries, setEntries] = useState<DumpEntry[]>([]);
     const [input, setInput] = useState("");
-    const [pressingId, setPressingId] = useState<number | null>(null);
     const [activeTab, setActiveTab] = useState<"texts" | "links">("texts");
 
     const isLinkEntry = (text: string) => /(https?:\/\/[^\s]+)/g.test(text);
diff --git a/src/screens/CalendarScreen.tsx b/src/screens/CalendarScreen.tsx
index e3f07cf..e0d1854 100644
--- a/src/screens/CalendarScreen.tsx
+++ b/src/screens/CalendarScreen.tsx
@@ -531,8 +531,8 @@ export default function CalendarScreen() {
                                     color: theme.text,
                                 }}
                             >
-                                {MONTH_NAMES[parseInt(selectedDateKey.split("-")[1]) - 1]}{" "}
-                                {parseInt(selectedDateKey.split("-")[2])},{" "}
+                                {MONTH_NAMES[parseInt(selectedDateKey.split("-")[1], 10) - 1]}{" "}
+                                {parseInt(selectedDateKey.split("-")[2], 10)},{" "}
                                 {selectedDateKey.split("-")[0]}
                             </Text>
                             <Text
diff --git a/src/screens/FocusScreen.tsx b/src/screens/FocusScreen.tsx
index 2dbfd61..c6b485e 100644
--- a/src/screens/FocusScreen.tsx
+++ b/src/screens/FocusScreen.tsx
@@ -2,7 +2,7 @@ import React, { useState, useEffect, useRef } from "react";
 import { View, Text, TouchableOpacity, Dimensions, Animated, StyleSheet, Pressable } from "react-native";
 import { SafeAreaView } from "react-native-safe-area-context";
 import Svg, { Circle } from "react-native-svg";
-import { Info, Play, Pause, RotateCcw, SkipForward, ArrowLeft, Target, CheckCircle2, PartyPopper } from "lucide-react-native";
+import { Play, Pause, RotateCcw, SkipForward, ArrowLeft, Target, CheckCircle2, PartyPopper } from "lucide-react-native";
 import { useNavigation, useRoute, RouteProp } from "@react-navigation/native";
 import ConfettiCannon from "react-native-confetti-cannon";
 import theme from "../data/color-theme";
@@ -85,6 +85,7 @@ export default function FocusScreen() {
             cancelScheduledFocusCompletion();
             showActiveFocusNotification(taskTitle, true);
         }
+        // eslint-disable-next-line react-hooks/exhaustive-deps
     }, [isActive]);
 
     // Detect completion when timeLeft hits 0 naturally from an active state
@@ -94,6 +95,7 @@ export default function FocusScreen() {
             handleCompletion();
         }
         prevTimeLeft.current = timeLeft;
+        // eslint-disable-next-line react-hooks/exhaustive-deps
     }, [timeLeft, isActive]);
 
     useEffect(() => {
@@ -102,6 +104,7 @@ export default function FocusScreen() {
             duration: 1000,
             useNativeDriver: false,
         }).start();
+        // eslint-disable-next-line react-hooks/exhaustive-deps
     }, [timeLeft]);
 
     const handleCompletion = async () => {
diff --git a/src/screens/FocusSetupScreen.tsx b/src/screens/FocusSetupScreen.tsx
index ef46474..9bddddd 100644
--- a/src/screens/FocusSetupScreen.tsx
+++ b/src/screens/FocusSetupScreen.tsx
@@ -1,5 +1,5 @@
 import React, { useState, useRef, useEffect } from "react";
-import { View, Text, TouchableOpacity, ScrollView, TextInput, Animated, KeyboardAvoidingView, Platform, StyleSheet } from "react-native";
+import { View, Text, TouchableOpacity, TextInput, Animated, Platform, StyleSheet } from "react-native";
 import { SafeAreaView } from "react-native-safe-area-context";
 import { ArrowLeft, Play, Timer } from "lucide-react-native";
 import { useNavigation, useRoute } from "@react-navigation/native";
@@ -51,10 +51,11 @@ export default function FocusSetupScreen() {
             duration: 800,
             useNativeDriver: true,
         }).start();
+        // eslint-disable-next-line react-hooks/exhaustive-deps
     }, []);
 
     const startFocus = async () => {
-        const mins = parseInt(duration) || 25;
+        const mins = parseInt(duration, 10) || 25;
         let taskColor = null;
         let taskTitle = null;
 
diff --git a/src/screens/HelpSupportScreen.tsx b/src/screens/HelpSupportScreen.tsx
index 880aeff..1db5e63 100644
--- a/src/screens/HelpSupportScreen.tsx
+++ b/src/screens/HelpSupportScreen.tsx
@@ -1,4 +1,4 @@
-import { View, Text, ScrollView, Pressable, Linking, Image } from "react-native";
+import { View, Text, ScrollView, Pressable, Linking } from "react-native";
 import { SafeAreaView } from "react-native-safe-area-context";
 import { useNavigation } from "@react-navigation/native";
 import {
@@ -7,7 +7,6 @@ import {
     Github,
     Globe,
     ExternalLink,
-    HelpCircle,
 } from "lucide-react-native";
 import theme from "../data/color-theme";
 
diff --git a/src/screens/HomeScreen.tsx b/src/screens/HomeScreen.tsx
index d83696b..fa4f838 100644
--- a/src/screens/HomeScreen.tsx
+++ b/src/screens/HomeScreen.tsx
@@ -1,38 +1,17 @@
-import { ScrollView, View, Text } from "react-native";
+import { ScrollView } from "react-native";
 import { SafeAreaView } from "react-native-safe-area-context";
 import theme from "../data/color-theme";
 import HeaderHeroScreen from "../layouts/homeScreen/Header";
 import TodayRecentTasks from "../layouts/homeScreen/TodayRecentTasks";
 import { useStreak } from "../hooks/useStreak";
 import { useTaskManager } from "../hooks/useTaskManager";
-import { useState, useCallback } from "react";
-import { useFocusEffect } from "@react-navigation/native";
-import { WidgetPreview } from "react-native-android-widget";
-import { TaskWidgetAndroid } from "../widget/TaskWidget";
 import StartTimerList from "../layouts/homeScreen/StartTimerList";
-import { PrivacyStatus } from "../components/PrivacyStatus";
 import WeeklyFocusWidget from "../layouts/homeScreen/WeeklyFocusWidget";
 
 export default function HomeScreen() {
     const { tasks } = useTaskManager();
     const { currentStreak } = useStreak(tasks);
 
-    // Get today's recent task or any active task
-    const activeTasks = tasks.filter(t => !t.isCompleted);
-    const today = new Date();
-    const todayTasks = activeTasks.filter(task => {
-        if (!task.dueDate) return false;
-        const taskDate = new Date(task.dueDate);
-        return (
-            taskDate.getDate() === today.getDate() &&
-            taskDate.getMonth() === today.getMonth() &&
-            taskDate.getFullYear() === today.getFullYear()
-        );
-    });
-
-    // Pick the most relevant task
-    const recentTask = todayTasks.length > 0 ? todayTasks[0] : (activeTasks.length > 0 ? activeTasks[0] : null);
-
     return (
         <SafeAreaView
             style={{ flex: 1, backgroundColor: theme.background }}
diff --git a/src/screens/SettingScreen.tsx b/src/screens/SettingScreen.tsx
index 8c05de8..f646823 100644
--- a/src/screens/SettingScreen.tsx
+++ b/src/screens/SettingScreen.tsx
@@ -14,7 +14,7 @@ import theme from "../data/color-theme";
 
 // ─── Sub-components ─────────────────────────────────────────────────────────
 
-function SectionHeader({ title, icon: Icon, color }: { title: string; icon: any; color: string }) {
+function SectionHeader({ title }: { title: string; icon: any; color: string }) {
     return (
         <View
             style={{
diff --git a/src/screens/TaskScreen.tsx b/src/screens/TaskScreen.tsx
index 3eab707..89977ec 100644
--- a/src/screens/TaskScreen.tsx
+++ b/src/screens/TaskScreen.tsx
@@ -19,12 +19,8 @@ export default function TaskScreen() {
     // Task data & CRUD
     const {
         tasks,
-        todoCount,
-        inProgressCount,
-        completedCount,
         saveNewTask,
         deleteTask,
-        toggleTaskComplete,
         advanceTaskStatus,
         setTaskStatus,
     } = useTaskManager();
diff --git a/src/utils/youtube.ts b/src/utils/youtube.ts
index a0cb17c..20667e9 100644
--- a/src/utils/youtube.ts
+++ b/src/utils/youtube.ts
@@ -1,13 +1,13 @@
 export const extractYouTubeId = (text?: string): string | null => {
   if (!text) return null;
   const urlRegex =
-    /(?:https?:\/\/)?(?:www\.)?(?:youtube\.com\/(?:[^\/\n\s]+\/\S+\/|(?:v|e(?:mbed)?)\/|shorts\/|\S*?[?&]v=)|youtu\.be\/)([a-zA-Z0-9_-]{11})/;
+    /(?:https?:\/\/)?(?:www\.)?(?:youtube\.com\/(?:[^/\n\s]+\/\S+\/|(?:v|e(?:mbed)?)\/|shorts\/|\S*?[?&]v=)|youtu\.be\/)([a-zA-Z0-9_-]{11})/;
   const match = text.match(urlRegex);
   return match ? match[1] : null;
 };
 
 export const hideYouTubeUrl = (text: string): string => {
   const urlRegex =
-    /(?:https?:\/\/)?(?:www\.)?(?:youtube\.com\/(?:[^\/\n\s]+\/\S+\/|(?:v|e(?:mbed)?)\/|shorts\/|\S*?[?&]v=)|youtu\.be\/)([a-zA-Z0-9_-]{11})(?:\S+)?/g;
+    /(?:https?:\/\/)?(?:www\.)?(?:youtube\.com\/(?:[^/\n\s]+\/\S+\/|(?:v|e(?:mbed)?)\/|shorts\/|\S*?[?&]v=)|youtu\.be\/)([a-zA-Z0-9_-]{11})(?:\S+)?/g;
   return text.replace(urlRegex, '').trim();
 };