refactor(handlers): split monolithic handlers.rs into modules

crates/xmedia-bot/src/handlers/statics.rs

@@ -0,0 +1,22 @@
+//! Process-wide singletons shared by the handler modules: the one SQLite
+//! pool (and the three stores built on it) plus the configuration.
+
+use crate::config::Config;
+use crate::db::{self};
+use crate::link_cache::LinkCache;
+use crate::queue::PersistentTaskQueue;
+use crate::state::ChatStore;
+use std::sync::{Arc, LazyLock};
+
+/// One shared SQLite pool for the three stores (chat state, task queue, link
+/// cache): a single pool bounds concurrent DB work on `data/task_queue.db`
+/// instead of three independent pools competing for the same file. The schema
+/// for all three tables is initialized once, here.
+static DB: LazyLock<Arc<db::DbPool>> =
+    LazyLock::new(|| db::open_store("data/task_queue.db").expect("failed to open database"));
+
+pub static CHAT_STORE: LazyLock<ChatStore> = LazyLock::new(|| ChatStore::new(Arc::clone(&DB)));
+pub static TASK_QUEUE: LazyLock<PersistentTaskQueue> =
+    LazyLock::new(|| PersistentTaskQueue::new(Arc::clone(&DB)));
+pub static LINK_CACHE: LazyLock<LinkCache> = LazyLock::new(|| LinkCache::new(Arc::clone(&DB)));
+pub static CONFIG: LazyLock<Config> = LazyLock::new(Config::load);