- Add new mission briefing videos (mission_030 through mission_037)
- Balance card stats: reduce fortify values, increase strike damage and armor values across multiple cards
- Adjust heal values for support units
- Significantly reduce gold rewards for missions 030–036 (from ~2800–3400 to 800), with mission 037 reward set to 1600
- Extend video preload loop in CampaignScene.js to include new mission videos
