feat: Implement game type filter for expansion selection in Cube Manager, adding 'digital' property to Scryfall sets and corresponding UI.

docs/development/CENTRAL.md

@@ -31,3 +31,4 @@
 - [Server-Side Caching](./devlog/2025-12-16-235900_server_side_caching.md): Completed. Implemented logic to cache images and metadata on the server upon bulk parsing, and updated client to use local assets.
 - [Peasant Algorithm Implementation](./devlog/2025-12-16-225700_peasant_algorithm.md): Completed. Implemented Peasant-specific pack generation rules including slot logic for commons, uncommons, lands, and wildcards.
 - [Multi-Expansion Selection](./devlog/2025-12-16-230500_multi_expansion_selection.md): Completed. Implemented searchable multi-select interface for "From Expansion" pack generation, allowing mixed-set drafts.
+- [Game Type Filter](./devlog/2025-12-16-231000_game_type_filter.md): Completed. Added Paper/Digital filter to the expansion selection list.

docs/development/devlog/2025-12-16-231000_game_type_filter.md

@@ -0,0 +1,15 @@
+# Game Type Filter for Expansion Selection
+
+## Objective
+Add a filter to the "From Expansion" set selection to easily distinguish between Paper and Digital (MTGA/MTGO) sets.
+
+## Implementation Details
+1.  **ScryfallService Update**: Updated `ScryfallSet` interface to include the `digital` boolean property and mapped it in `fetchSets`.
+2.  **CubeManager UI**: Added a toggle filter bar above the set list with three options:
+    *   **All**: Shows all sets.
+    *   **Paper**: Shows only sets where `digital` is false.
+    *   **Digital**: Shows only sets where `digital` is true.
+3.  **Filter Logic**: Integrated the game type filter into the existing search filter logic in `CubeManager`.
+
+## Status
+Completed. Users can now filter the expansion list by game type.

src/client/src/modules/cube/CubeManager.tsx

@@ -96,7 +96,9 @@ export const CubeManager: React.FC<CubeManagerProps> = ({ packs, setPacks, onGoT
     const saved = localStorage.getItem('cube_selectedSets');
     return saved ? JSON.parse(saved) : [];
   });
+
   const [searchTerm, setSearchTerm] = useState('');
+  const [gameTypeFilter, setGameTypeFilter] = useState<'all' | 'paper' | 'digital'>('all'); // Filter state
   const [numBoxes, setNumBoxes] = useState<number>(() => {
     const saved = localStorage.getItem('cube_numBoxes');
     return saved ? parseInt(saved) : 3;
@@ -440,14 +442,47 @@ export const CubeManager: React.FC<CubeManagerProps> = ({ packs, setPacks, onGoT
                     )}
                   </div>
 
+                  {/* Game Type Filter */}
+                  <div className="flex border-b border-slate-700 bg-slate-900">
+                    <button
+                      onClick={() => setGameTypeFilter('all')}
+                      className={`flex-1 py-1.5 text-[10px] font-bold uppercase tracking-wider transition-colors ${gameTypeFilter === 'all' ? 'bg-slate-700 text-white' : 'text-slate-500 hover:text-slate-300 hover:bg-slate-800'}`}
+                    >
+                      All
+                    </button>
+                    <button
+                      onClick={() => setGameTypeFilter('paper')}
+                      className={`flex-1 py-1.5 text-[10px] font-bold uppercase tracking-wider transition-colors ${gameTypeFilter === 'paper' ? 'bg-emerald-900/40 text-emerald-400' : 'text-slate-500 hover:text-emerald-400 hover:bg-slate-800'}`}
+                      title="Show only Paper sets"
+                    >
+                      Paper
+                    </button>
+                    <button
+                      onClick={() => setGameTypeFilter('digital')}
+                      className={`flex-1 py-1.5 text-[10px] font-bold uppercase tracking-wider transition-colors ${gameTypeFilter === 'digital' ? 'bg-blue-900/40 text-blue-400' : 'text-slate-500 hover:text-blue-400 hover:bg-slate-800'}`}
+                      title="Show only Digital sets (Arena/MTGO)"
+                    >
+                      Digital
+                    </button>
+                  </div>
+
                   {/* List */}
                   <div className="max-h-60 overflow-y-auto custom-scrollbar p-1 space-y-0.5">
                     {availableSets
-                      .filter(s =>
-                        !searchTerm ||
-                        s.name.toLowerCase().includes(searchTerm.toLowerCase()) ||
-                        s.code.toLowerCase().includes(searchTerm.toLowerCase())
-                      )
+                      .filter(s => {
+                        // Search Filter
+                        const matchesSearch = !searchTerm ||
+                          s.name.toLowerCase().includes(searchTerm.toLowerCase()) ||
+                          s.code.toLowerCase().includes(searchTerm.toLowerCase());
+
+                        // Game Type Filter
+                        const matchesType =
+                          gameTypeFilter === 'all' ? true :
+                            gameTypeFilter === 'paper' ? !s.digital :
+                              gameTypeFilter === 'digital' ? s.digital : true;
+
+                        return matchesSearch && matchesType;
+                      })
                       .map(s => {
                         const isSelected = selectedSets.includes(s.code);
                         return (

src/client/src/services/ScryfallService.ts

@@ -168,7 +168,8 @@ export class ScryfallService {
           name: s.name,
           set_type: s.set_type,
           released_at: s.released_at,
-          icon_svg_uri: s.icon_svg_uri
+          icon_svg_uri: s.icon_svg_uri,
+          digital: s.digital
         }));
       }
     } catch (e) {
@@ -226,4 +227,5 @@ export interface ScryfallSet {
   set_type: string;
   released_at: string;
   icon_svg_uri: string;
+  digital: boolean;
 }