fix(counter): use couchrest_database, proper begin/rescue instead of inline rescue nil

- Order.database returns CouchPotato::Database, not CouchRest::Database
- Fix: use .couchrest_database for raw CouchRest access
- Replace fragile 'rescue nil' inline with explicit begin/rescue
- Simplify YAML.safe_load (remove unnecessary permitted_classes)

lib/mozo/counter.rb

@@ -33,17 +33,17 @@ module Mozo
     def self.provision!
       require 'couchrest'
 
-      db = Order.database
+      # CouchPotato::Database wraps CouchRest — get the raw DB for direct view queries
+      db = Order.database.couchrest_database
       design = '_design/order_counter'
       view   = 'by_supplier_id_and_state'
 
-      # Ensure the design doc exists
-      unless db.get(design) rescue nil
+      # Ensure the design doc exists (auto-create if missing)
+      begin
+        db.get(design)
+      rescue RestClient::ResourceNotFound, CouchRest::NotFound
         puts "[Counter.provision!] Creating design doc #{design}"
-        doc = YAML.safe_load(
-          File.read(Rails.root.join('drb_counter/couchdb_design.yml')),
-          permitted_classes: [Symbol]
-        )
+        doc = YAML.safe_load(File.read(Rails.root.join('drb_counter/couchdb_design.yml')))
         doc['_id'] = design
         doc['language'] ||= 'javascript'
         db.save_doc(doc)
@@ -59,14 +59,11 @@ module Mozo
         supplier_id, state = row['key']
         count = row['value']
 
-        case state
-        when 'placed'
-          key = "supplier_counter:#{supplier_id}:orders_placed"
-        when 'active'
-          key = "supplier_counter:#{supplier_id}:orders_in_process"
-        else
-          next
-        end
+        key = case state
+              when 'placed' then "supplier_counter:#{supplier_id}:orders_placed"
+              when 'active' then "supplier_counter:#{supplier_id}:orders_in_process"
+              end
+        next unless key
 
         set(key, count)
         puts "  #{key} = #{count}"