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/agents/pool/test_helpers.rs

@@ -5,8 +5,8 @@ use std::sync::{Arc, Mutex};
 use tokio::sync::broadcast;
 
 use super::super::{AgentEvent, AgentStatus, CompletionReport};
-use super::types::{StoryAgent, composite_key};
 use super::AgentPool;
+use super::types::{StoryAgent, composite_key};
 
 impl AgentPool {
     /// Test helper: inject a pre-built agent entry so unit tests can exercise