feat(players): add player profile and schedule views

Implement player-facing views for profile analytics and tournament scheduling.

Changes:
- Add player profile page with partnership statistics
- Add player schedule page with upcoming matches
- Update rankings page to link to player profiles
- Add partnership tracking display in profile
- Include recent games timeline in profile

Note: Schedule view shows upcoming matches and tournament participation

app/templates/players/profile.html.erb

@@ -0,0 +1,94 @@
+<h1>Player Profile: <%= player.name %></h1>
+
+<div class="profile-header">
+  <div class="player-stats">
+    <div class="stat">
+      <span class="label">ELO Rating</span>
+      <span class="value"><%= player.current_elo %></span>
+    </div>
+    <div class="stat">
+      <span class="label">Total Games</span>
+      <span class="value"><%= recent_games.count %></span>
+    </div>
+    <div class="stat">
+      <span class="label">Win Rate</span>
+      <span class="value"><%= (recent_games.count > 0 ? (recent_games.count { |g| g[:won] }.to_f / recent_games.count * 100).round(1) : 0) %>%</span>
+    </div>
+  </div>
+</div>
+
+<hr>
+
+<h2>Partnership Performance</h2>
+
+<% if partnerships.any? %>
+  <div class="partnerships-table">
+    <table>
+      <thead>
+        <tr>
+          <th>Partner</th>
+          <th>Games</th>
+          <th>Win Rate</th>
+          <th>ELO Change</th>
+          <th>Avg/Match</th>
+          <th>Last Played</th>
+        </tr>
+      </thead>
+      <tbody>
+        <% partnerships.each do |p| %>
+          <tr>
+            <td><a href="/players/<%= p[:partner][:id] %>"><%= p[:partner][:name] %></a></td>
+            <td><%= p[:games_played] %></td>
+            <td>
+              <%= (p[:win_rate] * 100).round(1) %>%
+              <div class="confidence-<%= p[:games_played] >= 30 ? 'high' : p[:games_played] >= 15 ? 'medium' : 'low' %>">
+                <% if p[:games_played] < 15 %>
+                  <small>(low confidence)</small>
+                <% end %>
+              </div>
+            </td>
+            <td><%= p[:total_elo_change] > 0 ? "+" : "" %><%= p[:total_elo_change] %></td>
+            <td><%= p[:avg_elo_change] > 0 ? "+" : "" %><%= p[:avg_elo_change] %></td>
+            <td><%= p[:last_played]&.strftime('%Y-%m-%d') || '-' %></td>
+          </tr>
+        <% end %>
+      </tbody>
+    </table>
+  </div>
+<% else %>
+  <p>No partnership data available yet.</p>
+<% end %>
+
+<hr>
+
+<h2>Recent Games</h2>
+
+<% if recent_games.any? %>
+  <div class="recent-games">
+    <% recent_games.each do |game| %>
+      <div class="game <%= game[:won] ? 'won' : 'lost' %>">
+        <div class="game-date">
+          <%= game[:date]&.strftime('%Y-%m-%d %H:%M') || 'N/A' %>
+        </div>
+        <div class="game-teams">
+          <div class="team team-1 <%= game[:won] ? 'winner' : '' %>">
+            <%= game[:team_1].map { |p| p[:name] }.join(' + ') %>
+          </div>
+          <div class="game-score">
+            <%= game[:score] %>
+          </div>
+          <div class="team team-2 <%= !game[:won] ? 'winner' : '' %>">
+            <%= game[:team_2].map { |p| p[:name] }.join(' + ') %>
+          </div>
+        </div>
+        <div class="game-partner">
+          Partner: <%= game[:player_partner][:name] %>
+        </div>
+      </div>
+    <% end %>
+  </div>
+<% else %>
+  <p>No games played yet.</p>
+<% end %>
+
+<p><a href="/rankings">Back to Rankings</a></p>