feat(events): add message update, role, and voice state update handlers

- Implemented `handle_message_update` to log message edits.
- Created role event handlers for role creation, update, and deletion.
- Added voice state update handling to log channel changes.
- Introduced a new `ready_event` handler to restore bot presence and enforce blacklist.
- Updated `mod.rs` to include new event modules.
- Enhanced `main.rs` for database connection and initialization.
- Added comprehensive permission management in `permissions.rs`.

src/commands/botconfig_service.rs

@@ -0,0 +1,46 @@
+use serenity::model::prelude::*;
+use serenity::prelude::*;
+
+use crate::activity::{RotatingActivityKind, parse_status, start_rotation};
+use crate::db::DbPoolKey;
+
+pub async fn restore_presence_from_db(ctx: &Context) {
+    let bot_id = ctx.cache.current_user().id;
+
+    let pool = {
+        let data = ctx.data.read().await;
+        data.get::<DbPoolKey>().cloned()
+    };
+
+    let Some(pool) = pool else {
+        return;
+    };
+
+    let status = match crate::db::get_bot_status(&pool, bot_id).await {
+        Ok(Some(saved)) => parse_status(&saved),
+        _ => OnlineStatus::Online,
+    };
+
+    ctx.set_presence(None, status);
+
+    let activity_row = crate::db::get_bot_activity(&pool, bot_id)
+        .await
+        .ok()
+        .flatten();
+    if let Some((kind_raw, messages_raw)) = activity_row {
+        let Some(kind) = RotatingActivityKind::from_db(&kind_raw) else {
+            return;
+        };
+
+        let messages: Vec<String> = messages_raw
+            .split('\n')
+            .map(|s| s.trim())
+            .filter(|s| !s.is_empty())
+            .map(|s| s.to_string())
+            .collect();
+
+        if !messages.is_empty() {
+            start_rotation(ctx, kind, messages, status).await;
+        }
+    }
+}