feat: Implement server-side draft timer with AFK auto-pick and global draft loop, updating client-side timer to reflect server state.

docs/development/devlog/2025-12-16-222500_draft_timer.md

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+# 2025-12-16 - Draft Timer Enforcement
+
+## Status
+Completed
+
+## Description
+Implemented server-side timer enforcement for the draft phase to ensure the game progresses even if players are AFK or disconnected.
+
+## Changes
+1.  **Server: DraftManager.ts**
+    *   Updated `DraftState` to include `pickExpiresAt` (timestamp) for each player and `isPaused` for the draft.
+    *   Initialize `pickExpiresAt` to 60 seconds from now when a player receives a pack (initial or passed).
+    *   Implemented `checkTimers()` method to iterate over all active drafts and players. If `Date.now() > pickExpiresAt`, it triggers `autoPick`.
+    *   Implemented `setPaused()` to handle host disconnects. When resuming, timers are reset to 60s to prevent immediate timeout.
+
+2.  **Server: index.ts**
+    *   Removed ad-hoc `playerTimers` map and individual `setTimeout` logic associated with socket disconnect events.
+    *   Added a global `setInterval` (1 second tick) that calls `draftManager.checkTimers()` and broadcasts updates.
+    *   Updated `disconnect` handler to pause the draft if the host disconnects (`draftManager.setPaused(..., true)`).
+    *   Updated `join_room` / `rejoin_room` handlers to resume the draft if the host reconnects.
+
+3.  **Client: DraftView.tsx**
+    *   Updated the timer display logic to calculate remaining time based on `draftState.players[id].pickExpiresAt` - `Date.now()`.
+    *   The timer now accurately reflects the server-enforced deadline.
+
+## Behavior
+*   **Drafting**: Each pick has a 60-second limit.
+*   **Deck Building**: 120-second limit. If time runs out, the game forces start. Any unready players have their entire draft pool submitted as their deck automatically.
+*   **Timeout**: If time runs out, a random card is automatically picked, and the next pack (if available) is loaded with a fresh 60s timer.
+*   **AFK**: If a user is AFK, the system continues to auto-pick for them until the draft concludes.
+*   **Host Disconnect**: If the host leaves, the draft pauses for everyone. Timer stops.
+*   **Host Reconnect**: Draft resumes, and all active pick timers are reset to 60s.