style(sidecar): apply rustfmt

Format the sidecar source with `cargo fmt` so the new `cargo fmt --check`
CI gate passes on the first run. No behavior change.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0114TpmrNW4wNXsHq5CR72jQ

sidecar/src/store.rs

@@ -21,8 +21,8 @@ pub struct Store {
 impl Store {
     /// Opens (creating if absent) the SQLite database and ensures the schema exists.
     pub async fn open(path: &str) -> anyhow::Result<Self> {
-        let opts = SqliteConnectOptions::from_str(&format!("sqlite://{path}"))?
-            .create_if_missing(true);
+        let opts =
+            SqliteConnectOptions::from_str(&format!("sqlite://{path}"))?.create_if_missing(true);
 
         let pool = SqlitePoolOptions::new()
             .max_connections(4)
@@ -78,7 +78,12 @@ impl Store {
         self.recent(Some("economy.supply"), limit).await
     }
 
-    pub async fn record_link(&self, account: &str, website_user_id: &str, t: i64) -> anyhow::Result<()> {
+    pub async fn record_link(
+        &self,
+        account: &str,
+        website_user_id: &str,
+        t: i64,
+    ) -> anyhow::Result<()> {
         sqlx::query(
             "INSERT INTO links (account, website_user_id, linked_t) VALUES (?, ?, ?)
              ON CONFLICT(account) DO UPDATE SET website_user_id = excluded.website_user_id, linked_t = excluded.linked_t",