fix: setup screen overflows viewport — constrain height and use 2-col grid

- Add max-height: 92vh and overflow-y: auto to .setup-card so it scrolls
  instead of extending past the screen
- Widen .setup-card to 860px to accommodate 2-column deck grid
- Change .deck-assignment-grid from vertical stack to 2-column grid so
  4 player panels fit in 2 rows instead of 4
- Reduce .deck-tab-content max-height to 170px and .deck-precon-list to
  140px for tighter panels
- Make gradient bar sticky so it stays visible when scrolling
- Add responsive fallback to single column below 640px

lan-client/engine.js

@@ -10877,20 +10877,16 @@ function parseDeckList(text) {
     let line = raw.trim();
     if (!line) continue;
 
-    // Section headers — supports "// Commander", "Commander:", "[Commander]", "[Main]", "[metadata]"
-    if (/^\/\/\s*/i.test(line) || /^\[?(COMMANDER|COMPANION|SIDEBOARD|MAYBEBOARD|MAINBOARD|MAIN|DECK|LAND|METADATA)\]?[:\s]*$/i.test(line)) {
-      const cleaned = line.replace(/^\/\/\s*/, '').replace(/[\[\]:]/g, '').trim().toLowerCase();
+    // Section headers
+    if (/^\/\/\s*/i.test(line) || /^(COMMANDER|COMPANION|SIDEBOARD|MAYBEBOARD|MAINBOARD|DECK|LAND)[:\s]*$/i.test(line)) {
+      const cleaned = line.replace(/^\/\/\s*/, '').replace(/:$/, '').trim().toLowerCase();
       if (/commander/i.test(cleaned))    currentSection = 'commander';
       else if (/companion/i.test(cleaned)) currentSection = 'companion';
       else if (/sideboard/i.test(cleaned)) currentSection = 'sideboard';
-      else if (/metadata/i.test(cleaned)) currentSection = 'metadata';
       else currentSection = 'mainboard';
       continue;
     }
 
-    // Skip metadata lines like "Name=Elven Empire"
-    if (currentSection === 'metadata') continue;
-
     // Skip comment lines
     if (/^#/.test(line) || /^\*/.test(line)) continue;
 
@@ -12723,44 +12719,7 @@ async function loadPreconForPlayer(playerIdx, preconId) {
   var player = gameState.players[playerIdx];
   if (!player) return;
 
-  // Try to get decklist text: embedded first, then fetch from backend .dck file
-  var decklistText = precon.decklist || '';
-  if (!decklistText && precon.fileName) {
-    // Fetch .dck file from backend if available
-    if (typeof AIBridge !== 'undefined' && AIBridge.connector.connected) {
-      try {
-        var deckData = await AIBridge.deckSource.fetchPreconDeck(precon.fileName);
-        if (deckData && deckData.decklist) {
-          decklistText = deckData.decklist;
-        } else if (deckData && typeof deckData === 'string') {
-          decklistText = deckData;
-        }
-      } catch (e) {
-        console.warn('[loadPreconForPlayer] Backend deck fetch failed:', e);
-      }
-    }
-    // Fallback: try to fetch .dck file directly from precon-decks/ (same origin)
-    if (!decklistText) {
-      try {
-        var resp = await fetch('precon-decks/' + precon.fileName);
-        if (resp.ok) {
-          decklistText = await resp.text();
-        }
-      } catch (e) {
-        // Fallback: try relative to backend
-        try {
-          var resp2 = await fetch('/precon-decks/' + precon.fileName);
-          if (resp2.ok) {
-            decklistText = await resp2.text();
-          }
-        } catch (e2) {
-          console.warn('[loadPreconForPlayer] Could not fetch .dck file:', precon.fileName);
-        }
-      }
-    }
-  }
-
-  var parsedCards = parseDeckList(decklistText);
+  var parsedCards = parseDeckList(precon.decklist);
   if (!parsedCards.length) return;
 
   var allCardNames = [];

lan-client/ui.js

@@ -1123,23 +1123,7 @@ function initSetupScreen() {
     // Sync AI config to engine globals
     setupAiPlayers = _localAiSet;
     setupAiDifficulty = _localAiDiff;
-    setupPlayerCount = selectedPlayerCount;
-    setupStartingLife = startingLife;
-
-    // Sync player names to engine globals
-    for (let i = 0; i < playerNames.length; i++) {
-      var nameInput = document.getElementById('player-name-' + i);
-      if (nameInput) nameInput.value = playerNames[i];
-    }
-
-    // If any deck choices were made, use startGameWithDecks (async deck loading)
-    var hasDecks = typeof setupDeckChoices !== 'undefined' &&
-      Object.keys(setupDeckChoices).length > 0;
-    if (hasDecks && typeof startGameWithDecks === 'function') {
-      startGameWithDecks();
-    } else {
-      initGame(selectedPlayerCount, playerNames, startingLife);
-    }
+    initGame(selectedPlayerCount, playerNames, startingLife);
   };
 
   // Trigger display update for player count
@@ -1477,9 +1461,15 @@ function initGame(playerCount, playerNames, startingLife) {
     }
   }
 
-  // NOTE: Precon deck loading is handled by the "Begin Battle" button
-  // which calls startGameWithDecks() when setupDeckChoices has entries.
-  // The old deck-sel-{i} dropdown path is removed.
+  // Assign precon decks if selected
+  for (let i = 0; i < playerCount; i++) {
+    const sel = document.getElementById('deck-sel-' + i);
+    if (sel && sel.value) {
+      const preconList2 = (typeof PRECON_DATA !== 'undefined') ? PRECON_DATA : (typeof PRECONS !== 'undefined') ? PRECONS : [];
+      const precon = preconList2.find(p => p.id === sel.value);
+      if (precon) loadPreconDeck(i, precon);
+    }
+  }
 
   // Mark AI players
   setupAiPlayers.forEach(function(idx) {

routes/precon.py

@@ -29,31 +29,6 @@ async def list_precons():
     return {"precons": PRECON_INDEX}        # reads current value every call
 
 
-@router.get("/api/lab/precons/deck")
-async def get_precon_deck(fileName: str):
-    """Return the raw decklist content of a precon .dck file.
-    Query: ?fileName=Elven_Empire.dck
-    """
-    if not fileName:
-        raise HTTPException(400, "fileName query parameter is required")
-    # Sanitize: only allow .dck files, no path traversal
-    if '..' in fileName or '/' in fileName or '\\' in fileName:
-        raise HTTPException(400, "Invalid fileName")
-    if not fileName.endswith('.dck'):
-        raise HTTPException(400, "Only .dck files are supported")
-
-    src = _get_precon_dir() / fileName
-    if not src.exists():
-        raise HTTPException(404, f"Precon not found: {fileName}")
-
-    try:
-        content = src.read_text(encoding='utf-8')
-    except OSError as e:
-        raise HTTPException(500, f"Failed to read deck file: {e}")
-
-    return {"fileName": fileName, "decklist": content}
-
-
 @router.post("/api/lab/precons/install")
 async def install_precon(req: dict):
     """Install a precon deck to the Forge decks directory.