feat(tools): add LoggingAspect to unified tool dispatch entry point

Adds aspect-rs AOP-style logging to execute_tool_with_enforcer, providing cross-cutting arg/result logging for all tool dispatches. Introduces aspect-core, aspect-macros, and aspect-std dependencies.

rust/crates/tools/src/lib.rs

@@ -3,6 +3,9 @@ use std::path::{Path, PathBuf};
 use std::process::Command;
 use std::time::{Duration, Instant};
 
+use aspect_macros::aspect;
+use aspect_std::LoggingAspect;
+
 use api::{
     max_tokens_for_model, model_family_identity_for, resolve_model_alias, ApiError,
     ContentBlockDelta, InputContentBlock, InputMessage, MessageRequest, MessageResponse,
@@ -1199,6 +1202,7 @@ pub fn execute_tool(name: &str, input: &Value) -> Result<String, String> {
 }
 
 #[allow(clippy::too_many_lines)]
+#[aspect(LoggingAspect::new().log_args().log_result())]
 fn execute_tool_with_enforcer(
     enforcer: Option<&PermissionEnforcer>,
     name: &str,