fix: add --all to cargo fmt in script/test and autoformat codebase

cargo fmt without --all fails with "Failed to find targets" in
workspace repos. This was blocking every story's gates. Also ran
cargo fmt --all to fix all existing formatting issues.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

server/src/chat/transport/matrix/bot/history.rs

@@ -71,11 +71,7 @@ pub fn load_history(project_root: &std::path::Path) -> HashMap<OwnedRoomId, Room
     persisted
         .rooms
         .into_iter()
-        .filter_map(|(k, v)| {
-            k.parse::<OwnedRoomId>()
-                .ok()
-                .map(|room_id| (room_id, v))
-        })
+        .filter_map(|(k, v)| k.parse::<OwnedRoomId>().ok().map(|room_id| (room_id, v)))
         .collect()
 }