Update various configuration files, components, and assets; enhance notification system and API endpoints; improve documentation and styles across the application.

database/migrations/002_update_notification_templates.sql

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+-- Migration: Update notification_templates table with additional fields
+-- Description: Add missing fields required by the template creation form
+
+-- Add new columns to notification_templates table
+ALTER TABLE notification_templates 
+ADD COLUMN description TEXT,
+ADD COLUMN preheader VARCHAR(255),
+ADD COLUMN push_icon VARCHAR(500),
+ADD COLUMN push_url TEXT,
+ADD COLUMN sms_content TEXT,
+ADD COLUMN category VARCHAR(50),
+ADD COLUMN channels JSON,
+ADD COLUMN status VARCHAR(20) DEFAULT 'Draft',
+ADD COLUMN version VARCHAR(20) DEFAULT '1.0',
+ADD COLUMN tags TEXT,
+ADD COLUMN is_personal BOOLEAN DEFAULT false,
+ADD COLUMN from_name VARCHAR(100),
+ADD COLUMN reply_to VARCHAR(255),
+ADD COLUMN track_opens BOOLEAN DEFAULT true,
+ADD COLUMN created_by VARCHAR(36),
+ADD COLUMN updated_by VARCHAR(36);
+
+-- Add check constraint for status
+ALTER TABLE notification_templates 
+ADD CONSTRAINT chk_template_status 
+CHECK (status IN ('Draft', 'Active', 'Archived'));
+
+-- Update existing templates to have default values for new fields
+UPDATE notification_templates 
+SET 
+    status = 'Active',
+    version = '1.0',
+    is_personal = false,
+    track_opens = true,
+    channels = JSON_ARRAY('email')
+WHERE status IS NULL;
+
+-- Create index for better performance on commonly queried fields
+CREATE INDEX idx_notification_templates_status ON notification_templates(status);
+CREATE INDEX idx_notification_templates_category ON notification_templates(category);
+CREATE INDEX idx_notification_templates_created_by ON notification_templates(created_by);