fix: resolve Paper API build warnings

pom.xml

@@ -11,6 +11,7 @@
     <properties>
         <maven.compiler.release>21</maven.compiler.release>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+        <maven.compiler.proc>full</maven.compiler.proc>
     </properties>
 
     <dependencies>

src/main/java/net/tfminecraft/advancedresearch/Database.java

@@ -252,6 +252,8 @@ public String getRawData(String key, HashMap<String, Object> defaults) {
            : (defaults.containsKey(key) ? defaults.get(key).toString() : key);
       }
 
+      // Keep the existing legacy text representation, formatting, and exact-string comparisons.
+      @SuppressWarnings("deprecation")
       public String getString(String key, HashMap<String, Object> defaults) {
         return ChatColor.translateAlternateColorCodes('&', getRawData(key, defaults));
       }

src/main/java/net/tfminecraft/advancedresearch/InventoryManager.java

@@ -21,6 +21,8 @@
 
 public class InventoryManager {
 	public List<Integer> elementSlots = Arrays.asList(10, 19, 28, 37);
+	// Keep the existing legacy text representation, formatting, and exact-string comparisons.
+	@SuppressWarnings("deprecation")
 	public void MenuInventory(Player player, RStation rs) {
 		Inventory i = ResearchMain.plugin.getServer().createInventory(null, 54, ChatColor.GRAY + "Research Station");
 		Integer counter = 0;
@@ -117,6 +119,8 @@ public void MenuInventory(Player player, RStation rs) {
 			return;
 		}
 	}
+	// Keep the existing legacy text representation, formatting, and exact-string comparisons.
+	@SuppressWarnings("deprecation")
 	public void confirmInventory(Player player, RStation rs) {
 		Inventory i = ResearchMain.plugin.getServer().createInventory(null, 9, ChatColor.GRAY + "Confirm Scrap");
 		ItemStack yesItem = new ItemStack(Material.GREEN_CONCRETE, 1);
@@ -142,6 +146,8 @@ public void confirmInventory(Player player, RStation rs) {
 		}
 		player.openInventory(i);
 	}
+	// Keep the existing legacy text representation, formatting, and exact-string comparisons.
+	@SuppressWarnings("deprecation")
 	public void UpdateInventory(Inventory i, Player p, RStation rs) {
 		Integer counter = 0;
 		Collections.sort(rs.getNeededElements());
@@ -182,6 +188,8 @@ public void UpdateInventory(Inventory i, Player p, RStation rs) {
 		p.updateInventory();
 	}
 
+	// Keep the existing legacy text representation, formatting, and exact-string comparisons.
+	@SuppressWarnings("deprecation")
 	public ItemStack getItemsAdderFiller(String path) {
 		CustomStack stack = CustomStack.getInstance(path);
 		if(stack != null) {
@@ -207,6 +215,8 @@ public ItemStack getMMOItem(String path) {
 		return item;
 	}
 
+	// Keep the existing legacy text representation, formatting, and exact-string comparisons.
+	@SuppressWarnings("deprecation")
 	public ItemStack getResearchNote(ResearchNote n) {
 		ItemStack i = new ItemStack(Material.PAPER, 1);
 		ItemMeta m = i.getItemMeta();
@@ -223,6 +233,8 @@ public ItemStack getResearchNote(ResearchNote n) {
 		i.setItemMeta(m);
 		return i;
 	}
+	// Keep the existing legacy text representation, formatting, and exact-string comparisons.
+	@SuppressWarnings("deprecation")
 	public void completeResearch(Inventory i, Player p, RStation rs, Boolean open) {
 		Integer counter = 0;
 		Collections.sort(rs.getNeededElements());

src/main/java/net/tfminecraft/advancedresearch/ResearchEvents.java

@@ -63,6 +63,8 @@ public void focusPotionEvent(PlayerInteractEvent e) {
 			rp.setMentalPoints(amount);
 		}
 	}
+	// Keep the existing legacy text representation, formatting, and exact-string comparisons.
+	@SuppressWarnings("deprecation")
 	@EventHandler
 	public void startResearchEvent(PlayerInteractEvent e) {
 		if(!e.getAction().equals(Action.RIGHT_CLICK_BLOCK)) return;
@@ -102,6 +104,8 @@ public void startResearchEvent(PlayerInteractEvent e) {
 			}
 		}
 	}
+	// Keep the existing legacy text representation, formatting, and exact-string comparisons.
+	@SuppressWarnings("deprecation")
 	@EventHandler
 	public void scrapEvent(InventoryClickEvent e) {
 		if(!(e.getWhoClicked() instanceof Player)) return;
@@ -129,6 +133,8 @@ public void scrapEvent(InventoryClickEvent e) {
 			inv.MenuInventory(p, rs);
 		}
 	}
+	// Keep the existing legacy text representation, formatting, and exact-string comparisons.
+	@SuppressWarnings("deprecation")
 	@EventHandler
 	public void onResearchEvent(InventoryClickEvent e) {
 		if(!(e.getWhoClicked() instanceof Player)) return;
@@ -180,6 +186,8 @@ public void onResearchEvent(InventoryClickEvent e) {
 			doResearch(i, rp, rs, rs.getBottomNote());
 		}
 	}
+	// Keep the existing legacy text representation, formatting, and exact-string comparisons.
+	@SuppressWarnings("deprecation")
 	private void giveResult(Player p, RStation rs) {
 		if(p.getInventory().firstEmpty() == -1) {
 			p.sendMessage(ChatColor.RED + "You need at least 1 empty slot in you inventory!");