style: rustfmt lcm session handlers

Author: ScriptedAlchemy

src/mcp/tools/handlers/session.rs

@@ -269,11 +269,7 @@ fn registry_session_db_candidates(
     Ok(candidates)
 }
 
-fn lcm_preflight_tool_json(
-    project_root: Option<&Path>,
-    args: &Value,
-    value: &Value,
-) -> ToolResult {
+fn lcm_preflight_tool_json(project_root: Option<&Path>, args: &Value, value: &Value) -> ToolResult {
     if !render::wants_json(args) {
         // Markdown default: route through the normal renderer so an oversized
         // preflight payload is truncated *with* a retrieval handle. Passing the
@@ -575,7 +571,12 @@ fn bounded_lcm_expand_query_floor_text(
 
     // Drop the unbounded arrays entirely; the synthesis prompt below tells the
     // bridge the context was elided and pagination/node ids are recoverable.
-    for key in ["context_blocks", "matches", "node_ids", "context_pagination"] {
+    for key in [
+        "context_blocks",
+        "matches",
+        "node_ids",
+        "context_pagination",
+    ] {
         object.insert(key.to_string(), json!([]));
         object.insert(format!("{key}_truncated_for_mcp"), json!(true));
     }
@@ -604,10 +605,7 @@ fn bounded_lcm_expand_query_floor_text(
     if let Some(record) = &handle {
         object.insert("response_handle".to_string(), json!(record.handle));
         object.insert("retrieve_tool".to_string(), json!(RESPONSE_RETRIEVE_TOOL));
-        object.insert(
-            "retrieve_expires_at".to_string(),
-            json!(record.expires_at),
-        );
+        object.insert("retrieve_expires_at".to_string(), json!(record.expires_at));
         object.insert(
             "retrieve_instruction".to_string(),
             json!(format!(
@@ -631,7 +629,7 @@ fn bounded_lcm_expand_query_floor_text(
             "needs_synthesis": value
                 .get("needs_synthesis")
                 .cloned()
-                .unwrap_or_else(|| json!(true)),
+                .unwrap_or(json!(true)),
             "context_blocks": [],
             "matches": [],
             "mcp_response_truncated": true,
@@ -2439,7 +2437,8 @@ mod tests {
 
     #[test]
     fn message_text_snippet_extracts_readable_content_from_json() {
-        let text = "[{\"type\":\"tool_result\",\"content\":\"hello world\",\"tool_use_id\":\"toolu_1\"}]";
+        let text =
+            "[{\"type\":\"tool_result\",\"content\":\"hello world\",\"tool_use_id\":\"toolu_1\"}]";
         let snippet = message_text_snippet(text, 240);
         assert_eq!(snippet, "hello world");
         assert!(!snippet.contains("tool_use_id"));
@@ -2456,10 +2455,7 @@ mod tests {
     #[test]
     fn message_text_snippet_plain_text_is_collapsed() {
         let text = "line one\n\n   line two\ttabbed";
-        assert_eq!(
-            message_text_snippet(text, 240),
-            "line one line two tabbed"
-        );
+        assert_eq!(message_text_snippet(text, 240), "line one line two tabbed");
     }
 
     #[test]