Add Elo rating system with match entry and CSV upload

- Implement EloCalculator service for 2v2 Euchre matches
- Create background job processing with GoodJob
- Add single match entry form
- Add CSV upload for batch match entry
- Create player rankings view
- Add database schema for matches and elo snapshots

bin/worker.rb

@@ -0,0 +1,57 @@
+# frozen_string_literal: true
+
+require_relative "../config/app"
+
+# Boot the Hanami app to ensure persistence is available
+EuchreCamp::App.boot
+
+# Simple worker that polls for jobs and executes them
+def poll_and_execute_jobs
+  rom = EuchreCamp::App["persistence.rom"]
+  
+  puts "Worker started, waiting for jobs..."
+  
+  loop do
+    # Find a pending job
+    job = rom.relations[:good_jobs].where(finished_at: nil).order(:scheduled_at).limit(1).one
+    
+    if job
+      begin
+        # Mark as performed
+        rom.relations[:good_jobs].where(id: job[:id]).update(
+          performed_at: Time.now,
+          executions_count: (job[:executions_count] || 0) + 1
+        )
+        
+        # Execute the job
+        params = JSON.parse(job[:serialized_params])
+        job_class = Object.const_get(job[:job_class])
+        
+        if params["match_id"]
+          job_class.perform(params["match_id"])
+        else
+          # Legacy format for backwards compatibility
+          job_class.perform(*params["arguments"])
+        end
+        
+        # Mark as finished
+        rom.relations[:good_jobs].where(id: job[:id]).update(finished_at: Time.now)
+        
+        puts "Executed job #{job[:id]}: #{job[:job_class]}"
+      rescue => e
+        # Mark as failed
+        rom.relations[:good_jobs].where(id: job[:id]).update(
+          finished_at: Time.now,
+          error: e.message
+        )
+        puts "Failed job #{job[:id]}: #{e.message}"
+        puts e.backtrace.first(5).join("\n")
+      end
+    else
+      # No jobs, wait a bit
+      sleep 1
+    end
+  end
+end
+
+poll_and_execute_jobs