feat: implement flash messages system with auto-dismiss notifications

- Add flash message helper and styles for consistent notifications
- Replace Devise error messages with flash-based notifications
- Add dashboard page with event statistics
- Configure SMTP settings for development and production
- Update authentication controllers to use flash messages
- Add JavaScript controller for auto-dismiss functionality

app/controllers/pages_controller.rb

@@ -3,17 +3,26 @@
 class PagesController < ApplicationController
   # Skip authentication for public pages
   # skip_before_action :authenticate_user!, only: [ :home ]
+  before_action :authenticate_user!, only: [ :dashboard ]
 
   # Homepage showing featured parties
   def home
     # @parties = Party.published.featured.limit(3)
     @parties = Party.where(state: :published).order(created_at: :desc)
-    puts @parties
+
+    if user_signed_in?
+      return redirect_to(dashboard_path)
+    end
   end
 
   # User dashboard showing personalized content
   # Accessible only to authenticated users
   def dashboard
+    @available_parties = Party.published.count
+    @events_this_week = Party.published.where("start_time BETWEEN ? AND ?", Date.current.beginning_of_week, Date.current.end_of_week).count
+    @today_parties = Party.published.where("DATE(start_time) = ?", Date.current).order(start_time: :asc)
+    @tomorrow_parties = Party.published.where("DATE(start_time) = ?", Date.current + 1).order(start_time: :asc)
+    @other_parties = Party.published.upcoming.where.not("DATE(start_time) IN (?)", [Date.current, Date.current + 1]).order(start_time: :asc).page(params[:page])
   end
 
   # Events page showing all published parties with pagination