Add Force Proxy setting, fix redirect URL handling (PR #7)

public/index.html

@@ -296,6 +296,20 @@
               </div>
             </div>
 
+            <div class="settings-section">
+              <h3>Streaming</h3>
+              <div class="setting-item">
+                <label class="setting-toggle">
+                  <input type="checkbox" id="setting-force-proxy">
+                  <span class="toggle-slider"></span>
+                </label>
+                <div class="setting-info">
+                  <span class="setting-label">Force Backend Proxy</span>
+                  <span class="setting-hint">Route all streams through the proxy server. Enable if streams don't play directly.</span>
+                </div>
+              </div>
+            </div>
+
             <div class="settings-section">
               <h3>Keyboard Shortcuts</h3>
               <div class="shortcuts-grid">