fix #212: preserve shortcut tint in physical combat

Port the retail m_bShortcutGhosted meaning instead of treating SetShortcutNum's boolean as peace versus war. Keep occupied shortcut numbers on the gold sheet in NonCombat, Melee, and Missile, reserve the gray sheet for Magic, and lock the four-mode matrix with conformance tests and corrected research.

Co-Authored-By: Codex <codex@openai.com>

src/AcDream.App/Studio/FixtureProvider.cs

@@ -121,8 +121,8 @@ public static class FixtureProvider
                     iconIds:    MakeIconIds(stack),
                     useItem:    _ => { },
                     combatState: null,
-                    peaceDigits:  null,
-                    warDigits:    null,
+                    regularDigits: null,
+                    ghostedDigits: null,
                     emptyDigits:  null,
                     sendAddShortcut:    null,
                     sendRemoveShortcut: null);