fix: rust 1.95.0 clippy lints and matrix-sdk 0.17 API changes

Toolchain bump surfaced new lints (derivable_impls,
unnecessary_unwrap, unnecessary_sort_by, while_let_loop,
collapsible_match, unnecessary_option_map_or_else, cmp_owned)
across bft-json-crdt and huskies-server. All fixed mechanically.

Cargo.toml: dropped the no-longer-existing `rustls-tls` matrix-sdk
feature, then chased through the 0.17 API breakage:
- Relation::Reply is now a tuple variant wrapping Reply, not a
  struct variant with `in_reply_to`
- UserIdentifier::UserIdOrLocalpart removed — use
  UserIdentifier::Matrix(MatrixUserIdentifier::new(..))
- SendMessageLikeEventResult no longer exposes event_id directly;
  it's now on the inner `response` field

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

server/src/chat/commands/loc.rs

@@ -135,7 +135,7 @@ fn loc_top_n(project_root: &std::path::Path, top_n: usize) -> String {
         })
         .collect();
 
-    files.sort_by(|a, b| b.0.cmp(&a.0));
+    files.sort_by_key(|b| std::cmp::Reverse(b.0));
     files.truncate(top_n);
 
     if files.is_empty() {

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

@@ -61,7 +61,7 @@ pub(super) async fn is_reply_to_bot(
     bot_sent_event_ids: &TokioMutex<HashSet<OwnedEventId>>,
 ) -> bool {
     let candidate_ids: Vec<&OwnedEventId> = match relates_to {
-        Some(Relation::Reply { in_reply_to }) => vec![&in_reply_to.event_id],
+        Some(Relation::Reply(reply)) => vec![&reply.in_reply_to.event_id],
         Some(Relation::Thread(thread)) => {
             let mut ids = vec![&thread.event_id];
             if let Some(irti) = &thread.in_reply_to {
@@ -216,8 +216,9 @@ mod tests {
         sent.lock().await.insert(event_id.clone());
 
         let in_reply_to = matrix_sdk::ruma::events::relation::InReplyTo::new(event_id);
-        let relates_to: Option<Relation<RoomMessageEventContentWithoutRelation>> =
-            Some(Relation::Reply { in_reply_to });
+        let relates_to: Option<Relation<RoomMessageEventContentWithoutRelation>> = Some(
+            Relation::Reply(matrix_sdk::ruma::events::relation::Reply::new(in_reply_to)),
+        );
 
         assert!(is_reply_to_bot(relates_to.as_ref(), &sent).await);
     }
@@ -231,8 +232,9 @@ mod tests {
         let in_reply_to = matrix_sdk::ruma::events::relation::InReplyTo::new(
             "$other:example.com".parse::<OwnedEventId>().unwrap(),
         );
-        let relates_to: Option<Relation<RoomMessageEventContentWithoutRelation>> =
-            Some(Relation::Reply { in_reply_to });
+        let relates_to: Option<Relation<RoomMessageEventContentWithoutRelation>> = Some(
+            Relation::Reply(matrix_sdk::ruma::events::relation::Reply::new(in_reply_to)),
+        );
 
         assert!(!is_reply_to_bot(relates_to.as_ref(), &sent).await);
     }

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

@@ -92,7 +92,9 @@ pub async fn run_bot(
     {
         use matrix_sdk::ruma::api::client::uiaa;
         let password_auth = uiaa::AuthData::Password(uiaa::Password::new(
-            uiaa::UserIdentifier::UserIdOrLocalpart(config.username.clone().unwrap_or_default()),
+            uiaa::UserIdentifier::Matrix(uiaa::MatrixUserIdentifier::new(
+                config.username.clone().unwrap_or_default(),
+            )),
             config.password.clone().unwrap_or_default(),
         ));
         if let Err(e) = client

server/src/chat/transport/matrix/transport_impl.rs

@@ -48,7 +48,7 @@ impl ChatTransport for MatrixTransport {
             .await
             .map_err(|e| format!("Matrix send error: {e}"))?;
 
-        Ok(resp.event_id.to_string())
+        Ok(resp.response.event_id.to_string())
     }
 
     async fn edit_message(

server/src/chat/util.rs

@@ -156,10 +156,7 @@ fn is_inside_code_fence(text: &str) -> bool {
 pub fn drain_complete_paragraphs(buffer: &mut String) -> Vec<String> {
     let mut paragraphs = Vec::new();
     let mut search_from = 0;
-    loop {
-        let Some(pos) = buffer[search_from..].find("\n\n") else {
-            break;
-        };
+    while let Some(pos) = buffer[search_from..].find("\n\n") {
         let abs_pos = search_from + pos;
         // Only split at this boundary when we are NOT inside a code fence.
         if is_inside_code_fence(&buffer[..abs_pos]) {