feat: join-triggered by default, plus runtime admin controls

Default trigger is now player join rather than a timer, with a short
delay so the curiosity lands after the join message instead of racing
it. Modes entrada/intervalo/ambos/manual select the triggers.

Adds a full /curiosidade tree so behaviour is adjustable in-game
without editing config.yml: mode, interval, join delay, per-player
cooldown, no-repeat history, reaction window, reaction labels, and
per-category toggles. Every setter writes through to disk immediately
so changes survive a restart.

Facts are now tagged with a category so they can be filtered, and a
per-player cooldown plus recent-fact history stop repeats when someone
relogs.

Config changes are gated behind curiosidades.admin; reacting and
opting out stay default-true.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01ActvLGJApdxEAd2yfKPwqv

src/main/java/dev/marcospaulo/curiosidades/Settings.java

@@ -0,0 +1,124 @@
+package dev.marcospaulo.curiosidades;
+
+import org.bukkit.configuration.ConfigurationSection;
+
+import java.util.LinkedHashMap;
+import java.util.Map;
+
+/**
+ * Typed view over config.yml.
+ *
+ * <p>Every setter writes through to disk immediately, so a command that changes
+ * behaviour survives a restart without anyone having to remember to save.
+ */
+final class Settings {
+
+    private final Curiosidades plugin;
+
+    Settings(Curiosidades plugin) {
+        this.plugin = plugin;
+    }
+
+    // --- triggering ---------------------------------------------------------
+
+    Mode mode() {
+        Mode mode = Mode.byKey(plugin.getConfig().getString("modo", "ENTRADA"));
+        return mode == null ? Mode.ENTRADA : mode;
+    }
+
+    void mode(Mode mode) {
+        set("modo", mode.name());
+    }
+
+    int intervalMinutes() {
+        return Math.max(1, plugin.getConfig().getInt("intervalo-minutos", 20));
+    }
+
+    void intervalMinutes(int minutes) {
+        set("intervalo-minutos", Math.max(1, minutes));
+    }
+
+    /** Seconds to wait after a join before announcing, so it lands after the join message. */
+    int joinDelaySeconds() {
+        return Math.max(0, plugin.getConfig().getInt("atraso-entrada-segundos", 6));
+    }
+
+    void joinDelaySeconds(int seconds) {
+        set("atraso-entrada-segundos", Math.max(0, seconds));
+    }
+
+    /** Minutes before the same player can be the subject again. */
+    int cooldownMinutes() {
+        return Math.max(0, plugin.getConfig().getInt("cooldown-minutos", 30));
+    }
+
+    void cooldownMinutes(int minutes) {
+        set("cooldown-minutos", Math.max(0, minutes));
+    }
+
+    /** How many recent facts to remember and avoid repeating. */
+    int noRepeat() {
+        return Math.max(0, plugin.getConfig().getInt("evitar-repetir", 15));
+    }
+
+    void noRepeat(int count) {
+        set("evitar-repetir", Math.max(0, count));
+    }
+
+    // --- presentation -------------------------------------------------------
+
+    boolean reactionsEnabled() {
+        return plugin.getConfig().getBoolean("reacoes-ativas", true);
+    }
+
+    void reactionsEnabled(boolean enabled) {
+        set("reacoes-ativas", enabled);
+    }
+
+    int reactionWindowSeconds() {
+        return Math.max(5, plugin.getConfig().getInt("janela-reacao-segundos", 90));
+    }
+
+    void reactionWindowSeconds(int seconds) {
+        set("janela-reacao-segundos", Math.max(5, seconds));
+    }
+
+    Map<String, String> reactions() {
+        Map<String, String> reactions = new LinkedHashMap<>();
+        ConfigurationSection section = plugin.getConfig().getConfigurationSection("reacoes");
+        if (section != null) {
+            for (String key : section.getKeys(false)) {
+                reactions.put(key, section.getString(key, key));
+            }
+        }
+        if (reactions.isEmpty()) {
+            reactions.put("joia", "[+1]");
+        }
+        return reactions;
+    }
+
+    void reaction(String key, String label) {
+        set("reacoes." + key, label);
+    }
+
+    void removeReaction(String key) {
+        set("reacoes." + key, null);
+    }
+
+    // --- content ------------------------------------------------------------
+
+    boolean categoryEnabled(Category category) {
+        return plugin.getConfig().getBoolean("categorias." + category.key(), true);
+    }
+
+    void categoryEnabled(Category category, boolean enabled) {
+        set("categorias." + category.key(), enabled);
+    }
+
+    // --- plumbing -----------------------------------------------------------
+
+    private void set(String path, Object value) {
+        plugin.getConfig().set(path, value);
+        plugin.saveConfig();
+    }
+}