наблюдаемость: завершить базовый контур Community

Добавить структурированные журналы, метрики, трассировку и безопасный канал критических ошибок. Усилить границы рантайма, тесты, проверку зависимостей и сценарии развёртывания.

crates/crank-community-mcp/src/tool_search.rs

@@ -3,6 +3,7 @@ use std::{collections::BTreeSet, sync::Arc};
 use axum::{http::StatusCode, response::Response};
 use crank_core::{ToolAccessMode, search_tool_catalog};
 use crank_registry::PublishedAgentCatalog;
+use crank_trace::{ErrorCategory, Stage, StageOutcome};
 use serde::Deserialize;
 use serde_json::{Value, json};
 
@@ -127,13 +128,25 @@ async fn execute_catalog_tool(
     mut arguments: Value,
     transport_request_id: &str,
 ) -> Response {
-    let Some(resolved) = resolve_generated_tool(&catalog.tools, tool_name) else {
-        return tool_not_found_response(
-            message,
-            response_mode,
-            &session.protocol_version,
-            tool_name,
-        );
+    let resolve_span = Stage::McpToolsResolve.span();
+    let resolved = resolve_span.in_scope(|| resolve_generated_tool(&catalog.tools, tool_name));
+    let resolved = match resolved {
+        Some(resolved) => {
+            StageOutcome::Success.record(&resolve_span);
+            drop(resolve_span);
+            resolved
+        }
+        None => {
+            StageOutcome::Error.record(&resolve_span);
+            ErrorCategory::Catalog.record(&resolve_span);
+            drop(resolve_span);
+            return tool_not_found_response(
+                message,
+                response_mode,
+                &session.protocol_version,
+                tool_name,
+            );
+        }
     };
     let confirmation_token = take_confirmation_token(&mut arguments);
     handle_tool_call(