feat(storage): add comprehensive tests for StorageManager with memory, filesystem, and custom function backends

feat(email): implement EmailSendJob class for robust email delivery with retry logic and MX record resolution

feat(mail): restructure mail module exports for simplified access to core and delivery functionalities

ts/mail/core/classes.bouncemanager.ts

@@ -647,12 +647,12 @@ export class BounceManager {
       
       if (this.storageManager) {
         // Use storage manager
-        await this.storageManager.set('/email/bounces/suppression-list.tson', suppressionData);
+        await this.storageManager.set('/email/bounces/suppression-list.json', suppressionData);
       } else {
         // Fall back to filesystem
         plugins.smartfile.memory.toFsSync(
           suppressionData,
-          plugins.path.join(paths.dataDir, 'emails', 'suppression_list.tson')
+          plugins.path.join(paths.dataDir, 'emails', 'suppression_list.json')
         );
       }
     } catch (error) {
@@ -670,13 +670,13 @@ export class BounceManager {
       
       if (this.storageManager) {
         // Try to load from storage manager first
-        const suppressionData = await this.storageManager.get('/email/bounces/suppression-list.tson');
+        const suppressionData = await this.storageManager.get('/email/bounces/suppression-list.json');
         
         if (suppressionData) {
           entries = JSON.parse(suppressionData);
         } else {
           // Check if data exists in filesystem and migrate
-          const suppressionPath = plugins.path.join(paths.dataDir, 'emails', 'suppression_list.tson');
+          const suppressionPath = plugins.path.join(paths.dataDir, 'emails', 'suppression_list.json');
           
           if (plugins.fs.existsSync(suppressionPath)) {
             const data = plugins.fs.readFileSync(suppressionPath, 'utf8');
@@ -688,7 +688,7 @@ export class BounceManager {
         }
       } else {
         // No storage manager, use filesystem directly
-        const suppressionPath = plugins.path.join(paths.dataDir, 'emails', 'suppression_list.tson');
+        const suppressionPath = plugins.path.join(paths.dataDir, 'emails', 'suppression_list.json');
         
         if (plugins.fs.existsSync(suppressionPath)) {
           const data = plugins.fs.readFileSync(suppressionPath, 'utf8');
@@ -732,14 +732,14 @@ export class BounceManager {
       
       if (this.storageManager) {
         // Use storage manager
-        await this.storageManager.set(`/email/bounces/records/${bounce.id}.tson`, bounceData);
+        await this.storageManager.set(`/email/bounces/records/${bounce.id}.json`, bounceData);
       } else {
         // Fall back to filesystem
         const bouncePath = plugins.path.join(
           paths.dataDir,
           'emails',
           'bounces',
-          `${bounce.id}.tson`
+          `${bounce.id}.json`
         );
         
         // Ensure directory exists

ts/mail/core/classes.templatemanager.ts

@@ -291,7 +291,7 @@ export class TemplateManager {
       
       // Get all JSON files
       const files = plugins.fs.readdirSync(directory)
-        .filter(file => file.endsWith('.tson'));
+        .filter(file => file.endsWith('.json'));
       
       for (const file of files) {
         try {

ts/mail/core/index.ts

@@ -1,8 +1,3 @@
-/**
- * Mail core module
- * Email classes, validation, templates, and bounce management
- */
-
 // Core email components
 export * from './classes.email.ts';
 export * from './classes.emailvalidator.ts';