Email notification

init_db.sql

@@ -41,6 +41,7 @@ CREATE TABLE submitted (
     departed_dt DATETIME DEFAULT NULL,
     created_by VARCHAR(16) DEFAULT NULL,
     submitted_dt TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    public_token VARCHAR(128) DEFAULT NULL UNIQUE,
     updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
     
     -- Indexes for better performance
@@ -49,7 +50,8 @@ CREATE TABLE submitted (
     INDEX idx_etd (etd),
     INDEX idx_ac_reg (ac_reg),
     INDEX idx_submitted_dt (submitted_dt),
-    INDEX idx_created_by (created_by)
+    INDEX idx_created_by (created_by),
+    INDEX idx_public_token (public_token)
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
 
 -- Activity journal table with foreign key