feat(tournaments): add partnership tracking and tournament management

Implement comprehensive partnership tracking system and tournament
management features including round-robin, single/double elimination,
and Swiss system pairings.

Changes:
- Add partnership_games and partnership_stats tables
- Implement PartnershipTracker service for recording partnership data
- Add tournament generator with multiple formats
- Create tournament management actions and views
- Add acceptance tests for partnership tracking
- Fix PartnershipTracker to use single snapshot per player per match
- Fix round-robin test to query by round_number instead of hardcoded ID

Note: All 8 acceptance tests now passing

app/views/admin/tournaments/edit.rb

@@ -0,0 +1,13 @@
+# frozen_string_literal: true
+
+module EuchreCamp
+  module Views
+    module Admin
+      module Tournaments
+        class Edit < EuchreCamp::View
+          expose :tournament
+        end
+      end
+    end
+  end
+end

app/views/admin/tournaments/index.rb

@@ -0,0 +1,14 @@
+# frozen_string_literal: true
+
+module EuchreCamp
+  module Views
+    module Admin
+      module Tournaments
+        class Index < EuchreCamp::View
+          expose :upcoming
+          expose :completed
+        end
+      end
+    end
+  end
+end

app/views/admin/tournaments/new.rb

@@ -0,0 +1,12 @@
+# frozen_string_literal: true
+
+module EuchreCamp
+  module Views
+    module Admin
+      module Tournaments
+        class New < EuchreCamp::View
+        end
+      end
+    end
+  end
+end

app/views/admin/tournaments/results.rb

@@ -0,0 +1,16 @@
+# frozen_string_literal: true
+
+module EuchreCamp
+  module Views
+    module Admin
+      module Tournaments
+        class Results < EuchreCamp::View
+          expose :tournament
+          expose :round
+          expose :matchups
+          expose :teams
+        end
+      end
+    end
+  end
+end

app/views/admin/tournaments/rounds/show.rb

@@ -0,0 +1,18 @@
+# frozen_string_literal: true
+
+module EuchreCamp
+  module Views
+    module Admin
+      module Tournaments
+        module Rounds
+          class Show < EuchreCamp::View
+            expose :tournament
+            expose :round
+            expose :matchups
+            expose :teams
+          end
+        end
+      end
+    end
+  end
+end

app/views/admin/tournaments/show.rb

@@ -0,0 +1,18 @@
+# frozen_string_literal: true
+
+module EuchreCamp
+  module Views
+    module Admin
+      module Tournaments
+        class Show < EuchreCamp::View
+          expose :tournament
+          expose :players
+          expose :available_players
+          expose :teams
+          expose :rounds
+          expose :participants
+        end
+      end
+    end
+  end
+end

app/views/admin/tournaments/teams/edit.rb

@@ -0,0 +1,17 @@
+# frozen_string_literal: true
+
+module EuchreCamp
+  module Views
+    module Admin
+      module Tournaments
+        module Teams
+          class Edit < EuchreCamp::View
+            expose :tournament
+            expose :team
+            expose :players
+          end
+        end
+      end
+    end
+  end
+end