Migrate to Postgresql for better network handling. Add more user functionality.

app/controllers/api/events_controller.rb

@@ -2,6 +2,7 @@
 
 class Api::EventsController < ApplicationController
   skip_before_action :verify_authenticity_token
+  allow_unauthenticated_access # Skip normal session auth, use DSN auth instead
 
   # POST /api/:project_id/events
   def create
@@ -27,8 +28,8 @@ class Api::EventsController < ApplicationController
     response.headers['X-Sample-Rate'] = current_sampling[:allowed_requests].to_s
     response.headers['X-Sample-Until'] = current_sampling[:effective_until]
 
-    # Check if agent sent a rule version to compare against
-    client_version = request.headers['X-Rule-Version']&.to_i
+    # Check if agent sent a rule version in the JSON body to compare against
+    client_version = event_data.dig('last_rule_sync')&.to_i
 
     response_data = {
       success: true,
@@ -40,8 +41,7 @@ class Api::EventsController < ApplicationController
     if client_version.blank? || client_version != rule_version
       # Get rules updated since client version
       if client_version.present?
-        since_time = Time.at(client_version / 1_000_000, client_version % 1_000_000)
-        rules = Rule.where("updated_at > ?", since_time).enabled.sync_order
+        rules = Rule.since(client_version).enabled
       else
         # Full sync for new agents
         rules = Rule.active.sync_order