Initial commit: OpenRA game engine

Fork from OpenRA/OpenRA with one-click launch script (start-ra.cmd)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

mods/common/chrome/ingame-infobriefing.yaml

@@ -0,0 +1,30 @@
+Container@MAP_PANEL:
+	Height: PARENT_HEIGHT
+	Width: PARENT_WIDTH
+	Logic: GameInfoBriefingLogic
+	Children:
+		Background@PREVIEW_BG:
+			X: (PARENT_WIDTH - WIDTH) / 2
+			Y: 20
+			Width: 362
+			Height: 202
+			Background: dialog3
+			Children:
+				MapPreview@MAP_PREVIEW:
+					X: 1
+					Y: 1
+					Width: PARENT_WIDTH - 2
+					Height: PARENT_HEIGHT - 2
+					IgnoreMouseOver: True
+					IgnoreMouseInput: True
+					ShowSpawnPoints: False
+		ScrollPanel@MAP_DESCRIPTION_PANEL:
+			X: 20
+			Y: 232
+			Width: PARENT_WIDTH - 40
+			Height: 153
+			Children:
+				Label@MAP_DESCRIPTION:
+					X: 4
+					Y: 2
+					Width: PARENT_WIDTH - 32