feat(emails): add re-send for all emails, failed tab, and resend indicators

- Add resend_attempts and last_resent_at to email_logs schema and migrations
- Add POST /api/emails/logs/:id/resend and emailService.resendFromLog
- Add resendLog API and EmailLog.resendAttempts/lastResentAt
- Add All/Failed sub-tabs, resend button for all emails, re-sent indicator in logs and detail modal

Made-with: Cursor

backend/src/db/migrate.ts

@@ -368,6 +368,13 @@ async function migrate() {
       )
     `);
 
+    try {
+      await (db as any).run(sql`ALTER TABLE email_logs ADD COLUMN resend_attempts INTEGER NOT NULL DEFAULT 0`);
+    } catch (e) { /* column may already exist */ }
+    try {
+      await (db as any).run(sql`ALTER TABLE email_logs ADD COLUMN last_resent_at TEXT`);
+    } catch (e) { /* column may already exist */ }
+
     await (db as any).run(sql`
       CREATE TABLE IF NOT EXISTS email_settings (
         id TEXT PRIMARY KEY,
@@ -772,6 +779,13 @@ async function migrate() {
       )
     `);
 
+    try {
+      await (db as any).execute(sql`ALTER TABLE email_logs ADD COLUMN resend_attempts INTEGER NOT NULL DEFAULT 0`);
+    } catch (e) { /* column may already exist */ }
+    try {
+      await (db as any).execute(sql`ALTER TABLE email_logs ADD COLUMN last_resent_at TIMESTAMP`);
+    } catch (e) { /* column may already exist */ }
+
     await (db as any).execute(sql`
       CREATE TABLE IF NOT EXISTS email_settings (
         id UUID PRIMARY KEY,

backend/src/db/schema.ts

@@ -243,6 +243,8 @@ export const sqliteEmailLogs = sqliteTable('email_logs', {
   sentAt: text('sent_at'),
   sentBy: text('sent_by').references(() => sqliteUsers.id),
   createdAt: text('created_at').notNull(),
+  resendAttempts: integer('resend_attempts').notNull().default(0),
+  lastResentAt: text('last_resent_at'),
 });
 
 export const sqliteEmailSettings = sqliteTable('email_settings', {
@@ -557,6 +559,8 @@ export const pgEmailLogs = pgTable('email_logs', {
   sentAt: timestamp('sent_at'),
   sentBy: uuid('sent_by').references(() => pgUsers.id),
   createdAt: timestamp('created_at').notNull(),
+  resendAttempts: pgInteger('resend_attempts').notNull().default(0),
+  lastResentAt: timestamp('last_resent_at'),
 });
 
 export const pgEmailSettings = pgTable('email_settings', {

backend/src/lib/email.ts

@@ -1342,6 +1342,61 @@ export const emailService = {
       error: result.error 
     };
   },
+
+  /**
+   * Resend an email from an existing log entry
+   */
+  async resendFromLog(logId: string): Promise<{ success: boolean; error?: string }> {
+    const log = await dbGet<any>(
+      (db as any).select().from(emailLogs).where(eq((emailLogs as any).id, logId))
+    );
+
+    if (!log) {
+      return { success: false, error: 'Email log not found' };
+    }
+
+    if (!log.bodyHtml || !log.subject || !log.recipientEmail) {
+      return { success: false, error: 'Email log missing required data to resend' };
+    }
+
+    const result = await sendEmail({
+      to: log.recipientEmail,
+      subject: log.subject,
+      html: log.bodyHtml,
+      text: undefined,
+    });
+
+    const now = getNow();
+    const currentResendAttempts = (log.resendAttempts ?? 0) + 1;
+
+    if (result.success) {
+      await (db as any)
+        .update(emailLogs)
+        .set({
+          status: 'sent',
+          sentAt: now,
+          errorMessage: null,
+          resendAttempts: currentResendAttempts,
+          lastResentAt: now,
+        })
+        .where(eq((emailLogs as any).id, logId));
+    } else {
+      await (db as any)
+        .update(emailLogs)
+        .set({
+          status: 'failed',
+          errorMessage: result.error,
+          resendAttempts: currentResendAttempts,
+          lastResentAt: now,
+        })
+        .where(eq((emailLogs as any).id, logId));
+    }
+
+    return {
+      success: result.success,
+      error: result.error,
+    };
+  },
 };
 
 // Export the main sendEmail function for direct use

backend/src/routes/emails.ts

@@ -349,6 +349,23 @@ emailsRouter.get('/logs/:id', requireAuth(['admin', 'organizer']), async (c) =>
   return c.json({ log });
 });
 
+// Resend email from log
+emailsRouter.post('/logs/:id/resend', requireAuth(['admin', 'organizer']), async (c) => {
+  const { id } = c.req.param();
+  
+  const result = await emailService.resendFromLog(id);
+  
+  if (!result.success && result.error === 'Email log not found') {
+    return c.json({ error: 'Email log not found' }, 404);
+  }
+  
+  if (!result.success && result.error === 'Email log missing required data to resend') {
+    return c.json({ error: result.error }, 400);
+  }
+  
+  return c.json({ success: result.success, error: result.error });
+});
+
 // Get email stats
 emailsRouter.get('/stats', requireAuth(['admin', 'organizer']), async (c) => {
   const eventId = c.req.query('eventId');