feat: Implement deck builder magnified card view, land advice, basic land integration, and unlimited time for deck construction.

docs/development/devlog/2025-12-17-160500_deck_builder_magnified_view.md

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+# Deck Builder Magnified View
+
+## Requirements
+- Add a magnified card view to the `DeckBuilderView`, similar to the one in `DraftView`.
+- Show card details (name, type, oracle text) when hovering over any card in the pool, deck, or land station.
+- Use a persistent sidebar layout for the magnified view.
+
+## Implementation Details
+
+### `DeckBuilderView.tsx`
+
+-   **State**: Added `hoveredCard` state to track the card being inspected.
+-   **Layout**:
+    -   Changed the layout to a 3-column flex design:
+        1.  **Zoom Sidebar** (`hidden xl:flex w-80`): Shows the magnified card image and text details. Defaults to a "Hover Card" placeholder.
+        2.  **Card Pool** (`flex-1`): Displays available cards.
+        3.  **Deck & Lands** (`flex-1`): Displays the current deck and land controls.
+-   **Interactions**:
+    -   Added `onMouseEnter={() => setHoveredCard(card)}` and `onMouseLeave={() => setHoveredCard(null)}` handlers to:
+        -   Cards in the Pool.
+        -   Cards in the current Deck.
+        -   Basic Lands in the Land Station.
+
+## Verification
+-   Verified that hovering over cards updates the sidebar image and text.
+-   Verified that moving mouse away clears the preview (consistent with Draft View).
+-   Layout adjusts responsively (sidebar hidden on smaller screens).