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/state/ICapturable.java

@@ -0,0 +1,166 @@
+package com.tiedup.remake.state;
+
+import org.jetbrains.annotations.Nullable;
+import net.minecraft.world.entity.Entity;
+
+/**
+ * Capture, leash, and transport interface for kidnapped entities.
+ *
+ * <p>Covers the capture lifecycle: being captured by a captor, being freed,
+ * being transferred to another captor, and querying capture state.</p>
+ *
+ * @see IRestrainableEntity
+ * @see IBondageState
+ * @see IRestrainable
+ */
+public interface ICapturable extends IRestrainableEntity {
+
+    // ========================================
+    // CAPTURE LIFECYCLE
+    // ========================================
+
+    /**
+     * Capture this entity by the given captor.
+     *
+     * <p><b>Prerequisites:</b></p>
+     * <ul>
+     *   <li>Must be tied up OR have collar with captor as owner</li>
+     *   <li>Must not already be captured ({@link #isCaptive()} == false)</li>
+     *   <li>Captor must allow capture ({@link ICaptor#canCapture(IRestrainable)})</li>
+     * </ul>
+     *
+     * <p><b>Process for Players:</b></p>
+     * <ol>
+     *   <li>Validate conditions (tied up or has owner's collar)</li>
+     *   <li>Transfer any existing captives to new captor (if allowed)</li>
+     *   <li>Create LeashProxyEntity that follows the player</li>
+     *   <li>Attach leash from proxy to captor entity</li>
+     *   <li>Add captive to captor's captive list</li>
+     * </ol>
+     *
+     * <p><b>Process for NPCs:</b></p>
+     * <ol>
+     *   <li>Validate conditions</li>
+     *   <li>Use vanilla setLeashedTo() directly on the NPC</li>
+     * </ol>
+     *
+     * Phase 17: Renamed from getEnslavedBy to getCapturedBy
+     *
+     * @param captor The captor attempting to capture
+     * @return true if capture succeeded, false otherwise
+     */
+    boolean getCapturedBy(ICaptor captor);
+
+    /**
+     * Free this captive from capture.
+     * Equivalent to {@code free(true)}.
+     *
+     * <p>This will:</p>
+     * <ul>
+     *   <li>Despawn the transport entity</li>
+     *   <li>Drop the lead item</li>
+     *   <li>Remove from captor's captive list</li>
+     * </ul>
+     */
+    void free();
+
+    /**
+     * Free this captive from capture with transport state option.
+     *
+     * @param transportState If true, despawn the transport entity. If false, keep it (for transfer).
+     */
+    void free(boolean transportState);
+
+    /**
+     * Transfer this captive to a new captor.
+     * Current captor loses the captive, new captor gains it.
+     *
+     * <p>Only works if current captor allows captive transfer
+     * ({@link ICaptor#allowCaptiveTransfer()} == true).</p>
+     *
+     * Phase 17: Renamed from transferSlaveryTo to transferCaptivityTo
+     *
+     * @param newCaptor The new captor to transfer to
+     */
+    void transferCaptivityTo(ICaptor newCaptor);
+
+    // ========================================
+    // STATE QUERIES - CAPTURE
+    // ========================================
+
+    /**
+     * Check if this entity can be captured.
+     *
+     * <p><b>From original code (PlayerBindState.java:195-225):</b></p>
+     * <ul>
+     *   <li>If tied up: Always capturable</li>
+     *   <li>If NOT tied up: Only capturable if has collar AND collar has captor as owner</li>
+     * </ul>
+     *
+     * @return true if capturable
+     */
+    boolean isEnslavable();
+
+    /**
+     * Check if this entity is currently captured (attached by leash).
+     *
+     * <p><b>For Players:</b> Returns true when LeashProxyEntity is attached and leashed to captor</p>
+     * <p><b>For NPCs:</b> Returns true when vanilla leash is attached</p>
+     *
+     * Phase 17: Renamed from isSlave to isCaptive
+     *
+     * @return true if captured (has leash holder)
+     */
+    boolean isCaptive();
+
+    /**
+     * Check if this entity can be tied up (not already restrained).
+     *
+     * @return true if entity can accept bind items
+     */
+    boolean canBeTiedUp();
+
+    /**
+     * Check if this entity is tied to a pole (immobilized).
+     *
+     * @return true if tied to a static pole entity
+     */
+    boolean isTiedToPole();
+
+    /**
+     * Tie this entity to the closest fence/pole within range.
+     * Searches for fence blocks near the entity's current position.
+     *
+     * @param searchRadius The radius in blocks to search for fences
+     * @return true if successfully tied to a pole
+     */
+    boolean tieToClosestPole(int searchRadius);
+
+    /**
+     * Check if this entity can be auto-kidnapped by events.
+     * Used by EntityKidnapper AI to determine valid targets.
+     *
+     * @return true if can be targeted by kidnapping events
+     */
+    boolean canBeKidnappedByEvents();
+
+    /**
+     * Get the current captor (the entity holding the leash).
+     *
+     * Phase 17: Renamed from getMaster to getCaptor
+     *
+     * @return The captor, or null if not captured
+     */
+    ICaptor getCaptor();
+
+    /**
+     * Get the leash proxy or transport entity for this captive.
+     *
+     * <p><b>For Players:</b> Returns the LeashProxyEntity following the player</p>
+     * <p><b>For NPCs:</b> Returns null (NPCs use vanilla leash directly)</p>
+     *
+     * @return The proxy/transport entity, or null if not applicable
+     */
+    @Nullable
+    Entity getTransport();
+}