Clean repo for open source release

Remove build artifacts, dev tool configs, unused dependencies,
and third-party source dumps. Add proper README, update .gitignore,
clean up Makefile.

src/main/java/com/tiedup/remake/v2/bondage/V2EquipResult.java

@@ -0,0 +1,41 @@
+package com.tiedup.remake.v2.bondage;
+
+import java.util.List;
+import net.minecraft.world.item.ItemStack;
+
+/**
+ * Result of attempting to equip a V2 bondage item.
+ * Carries displaced stacks for swap/supersede cases.
+ */
+public record V2EquipResult(Type type, List<ItemStack> displaced) {
+
+    public enum Type {
+        /** Item equipped successfully into empty regions. */
+        SUCCESS,
+        /** Single conflicting item was swapped out. */
+        SWAPPED,
+        /** Global item superseded multiple sub-region items. */
+        SUPERSEDED,
+        /** Item could not be equipped due to unresolvable conflicts. */
+        BLOCKED
+    }
+
+    /** Convenience: check if equip was blocked. */
+    public boolean isBlocked() { return type == Type.BLOCKED; }
+
+    /** Convenience: check if equip succeeded (any non-blocked result). */
+    public boolean isSuccess() { return type != Type.BLOCKED; }
+
+    // ===== Factory methods =====
+
+    public static final V2EquipResult SUCCESS = new V2EquipResult(Type.SUCCESS, List.of());
+    public static final V2EquipResult BLOCKED = new V2EquipResult(Type.BLOCKED, List.of());
+
+    public static V2EquipResult swapped(ItemStack displaced) {
+        return new V2EquipResult(Type.SWAPPED, List.of(displaced));
+    }
+
+    public static V2EquipResult superseded(List<ItemStack> displaced) {
+        return new V2EquipResult(Type.SUPERSEDED, List.copyOf(displaced));
+    }
+}