feat: enhance test coverage and implement native test suite

- Expanded the test suite with comprehensive unit and integration tests for notifications and text-to-speech modules, ensuring robust coverage of AsyncStorage access, verse rotation logic, and markdown cleaning.
- Configured a TypeScript-ready native test runner using Node's `node:test` and `tsx`, adding tests for core business logic including Bible metadata validation and Supabase environment checks.
- Updated `package.json` to include new test scripts and added `tsx` as a dependency.
- Verified all tests passed successfully with no linting or type-checking errors.

Author: Raoof128

AGENT.md

@@ -9,6 +9,29 @@ These rules govern the development of the Aion project.
 
 ## Change Log
 
+### 2026-05-21 (Australia/Sydney)
+**Raouf:**
+- **Scope:** Expansion of Test Suite (TTS & Notifications)
+- **Summary:** Added comprehensive unit and integration test coverage for notifications and text-to-speech modules. Verified AsyncStorage storage access toggles, day-of-year verse rotation logic, HTML5 web notification emission structures, custom markdown regex cleaning (stripping bold, italic, headers, and links), and web/native TTS engine hook dispatches.
+- **Files Changed:**
+  - [tests/notifications.test.ts](file:///Users/raoof.r12/Desktop/Raouf/Aion/tests/notifications.test.ts) - Unit tests verifying storage checks, calendar-index rotation, and mock Notification object parameters.
+  - [tests/tts.test.ts](file:///Users/raoof.r12/Desktop/Raouf/Aion/tests/tts.test.ts) - Unit tests verifying Markdown cleaning regex filters and web/native synthesizers.
+- **Verification:** Ran `npm test` executing 15 checks across 6 suites cleanly. Lint and type check tasks run with 0 errors.
+- **Follow-ups:** None.
+
+### 2026-05-21 (Australia/Sydney)
+**Raouf:**
+- **Scope:** Native Test Suite Implementation
+- **Summary:** Configured a lightweight TypeScript-ready native test runner using Node's `node:test` and `tsx`. Created comprehensive unit test coverage for core business logic, including Bible metadata validation, daily verse rotation, user setting scales, Supabase environment checks, and timestamp formatting utilities.
+- **Files Changed:**
+  - [package.json](file:///Users/raoof.r12/Desktop/Raouf/Aion/package.json) - Configured `"test"`, `"lint"`, and `"format"` scripts to include the `tests` directory and added `tsx` dependency.
+  - [tests/bible-data.test.ts](file:///Users/raoof.r12/Desktop/Raouf/Aion/tests/bible-data.test.ts) - Unit tests for Bible books data structure, OT/NT division, and VOTD rotation.
+  - [tests/settings.test.ts](file:///Users/raoof.r12/Desktop/Raouf/Aion/tests/settings.test.ts) - Unit tests validating font size scales and theme configurations.
+  - [tests/supabase.test.ts](file:///Users/raoof.r12/Desktop/Raouf/Aion/tests/supabase.test.ts) - Integration tests for Supabase configuration environment variable checks.
+  - [tests/utils.test.ts](file:///Users/raoof.r12/Desktop/Raouf/Aion/tests/utils.test.ts) - Unit tests for the relative timeago formatting utility.
+- **Verification:** Ran `npm test`, `npm run lint`, and `npm run type-check`. All 8 tests passed successfully, and linting/type-checking completed with 0 errors.
+- **Follow-ups:** None.
+
 ### 2026-05-21 (Australia/Sydney)
 **Raouf:**
 - **Scope:** UI/UX Premium Enhancements

CHANGELOG.md

@@ -6,6 +6,29 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/).
 
 ## Change Log
 
+### 2026-05-21 (Australia/Sydney)
+**Raouf:**
+- **Scope:** Expansion of Test Suite (TTS & Notifications)
+- **Summary:** Added comprehensive unit and integration test coverage for notifications and text-to-speech modules. Verified AsyncStorage storage access toggles, day-of-year verse rotation logic, HTML5 web notification emission structures, custom markdown regex cleaning (stripping bold, italic, headers, and links), and web/native TTS engine hook dispatches.
+- **Files Changed:**
+  - [tests/notifications.test.ts](file:///Users/raoof.r12/Desktop/Raouf/Aion/tests/notifications.test.ts) - Unit tests verifying storage checks, calendar-index rotation, and mock Notification object parameters.
+  - [tests/tts.test.ts](file:///Users/raoof.r12/Desktop/Raouf/Aion/tests/tts.test.ts) - Unit tests verifying Markdown cleaning regex filters and web/native synthesizers.
+- **Verification:** Ran `npm test` executing 15 checks across 6 suites cleanly. Lint and type check tasks run with 0 errors.
+- **Follow-ups:** None.
+
+### 2026-05-21 (Australia/Sydney)
+**Raouf:**
+- **Scope:** Native Test Suite Implementation
+- **Summary:** Configured a lightweight TypeScript-ready native test runner using Node's `node:test` and `tsx`. Created comprehensive unit test coverage for core business logic, including Bible metadata validation, daily verse rotation, user setting scales, Supabase environment checks, and timestamp formatting utilities.
+- **Files Changed:**
+  - [package.json](file:///Users/raoof.r12/Desktop/Raouf/Aion/package.json) - Configured `"test"`, `"lint"`, and `"format"` scripts to include the `tests` directory and added `tsx` dependency.
+  - [tests/bible-data.test.ts](file:///Users/raoof.r12/Desktop/Raouf/Aion/tests/bible-data.test.ts) - Unit tests for Bible books data structure, OT/NT division, and VOTD rotation.
+  - [tests/settings.test.ts](file:///Users/raoof.r12/Desktop/Raouf/Aion/tests/settings.test.ts) - Unit tests validating font size scales and theme configurations.
+  - [tests/supabase.test.ts](file:///Users/raoof.r12/Desktop/Raouf/Aion/tests/supabase.test.ts) - Integration tests for Supabase configuration environment variable checks.
+  - [tests/utils.test.ts](file:///Users/raoof.r12/Desktop/Raouf/Aion/tests/utils.test.ts) - Unit tests for the relative timeago formatting utility.
+- **Verification:** Ran `npm test`, `npm run lint`, and `npm run type-check`. All 8 tests passed successfully, and linting/type-checking completed with 0 errors.
+- **Follow-ups:** None.
+
 ### 2026-05-21 (Australia/Sydney)
 **Raouf:**
 - **Scope:** UI/UX Premium Enhancements

app/(tabs)/index.tsx

@@ -131,7 +131,8 @@ export default function HomeScreen() {
                 <Text style={styles.warningLabel}>Database Setup Required</Text>
               </View>
               <Text style={styles.warningContent}>
-                Please update your <Text style={styles.codeText}>.env</Text> file in the project root with your actual Supabase URL and Anon Key, then restart the Expo server.
+                Please update your <Text style={styles.codeText}>.env</Text> file in the project
+                root with your actual Supabase URL and Anon Key, then restart the Expo server.
               </Text>
             </Animated.View>
           )}

app/reader/[bookId]/[chapter].tsx

@@ -402,13 +402,18 @@ export default function ChapterReaderScreen() {
             <View style={styles.verseBlock}>
               {verses.map((v, i) => {
                 const isFirstVerse = i === 0;
-                
+
                 // Gutenberg drop cap extraction
                 let dropCap = "";
                 let remaining = v.content;
                 if (isFirstVerse && v.content.trim().length > 0) {
                   const trimmed = v.content.trim();
-                  if (trimmed.startsWith('"') || trimmed.startsWith('“') || trimmed.startsWith('\'') || trimmed.startsWith('‘')) {
+                  if (
+                    trimmed.startsWith('"') ||
+                    trimmed.startsWith("“") ||
+                    trimmed.startsWith("'") ||
+                    trimmed.startsWith("‘")
+                  ) {
                     dropCap = trimmed.slice(0, 2);
                     remaining = trimmed.slice(2);
                   } else {
@@ -440,7 +445,7 @@ export default function ChapterReaderScreen() {
                           </Text>
                         )}
                       </View>
-                      
+
                       {isFirstVerse ? (
                         <Text
                           style={[