Fix flash timer cancellation, update JSDoc for init and createGameCard

[Copilot]

Three targeted fixes based on PR review comments on the orbit-sprite-memory plugin and gameCard component.

Changes

• Timer ordering in submitSelection(): clearTimers() was called after flashBoard(), immediately cancelling the 320 ms cleanup timeout and leaving the success/failure CSS class stuck on the board. Moved clearTimers() before flashBoard() so the flash animates and clears correctly.

  // Before — flash cleanup timer wiped out immediately
  flashBoard('success');
  showRoundReveal(_currentRound);
  clearTimers();          // ← cancels the 320ms remove-class timer
  
  // After — playback timers cleared first, flash runs to completion
  clearTimers();
  flashBoard('success');
  showRoundReveal(_currentRound);

• init() JSDoc: Changed @param {HTMLElement} to @param {HTMLElement|null} to match the implementation, which explicitly handles and tests null/undefined input.

• createGameCard() JSDoc: Added @param entries for highestLevel, maxLevel, maxPiggies, and lowestDisplayTime — the four additional progress fields the function already renders but had not documented.

---

💬 Send tasks to Copilot coding agent from Slack and Teams to turn conversations into code. Copilot posts an update in your thread when it's finished.