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/agent_mode.rs

@@ -51,14 +51,20 @@ pub async fn run(
 
     println!("\x1b[96;1m[agent-mode]\x1b[0m Starting headless build agent");
     println!("\x1b[96;1m[agent-mode]\x1b[0m Rendezvous: {rendezvous_url}");
-    println!("\x1b[96;1m[agent-mode]\x1b[0m Project: {}", project_root.display());
+    println!(
+        "\x1b[96;1m[agent-mode]\x1b[0m Project: {}",
+        project_root.display()
+    );
 
     // Validate project config.
     let config = ProjectConfig::load(&project_root).unwrap_or_else(|e| {
         eprintln!("error: invalid project config: {e}");
         std::process::exit(1);
     });
-    slog!("[agent-mode] Loaded config with {} agents", config.agent.len());
+    slog!(
+        "[agent-mode] Loaded config with {} agents",
+        config.agent.len()
+    );
 
     // Event bus for pipeline lifecycle events.
     let (watcher_tx, _) = broadcast::channel::<watcher::WatcherEvent>(1024);
@@ -79,9 +85,7 @@ pub async fn run(
                     {
                         let story_id = evt.story_id.clone();
                         tokio::task::spawn_blocking(move || {
-                            if let Err(e) =
-                                crate::worktree::prune_worktree_sync(&root, &story_id)
-                            {
+                            if let Err(e) = crate::worktree::prune_worktree_sync(&root, &story_id) {
                                 slog!("[agent-mode] worktree prune failed for {story_id}: {e}");
                             }
                         });
@@ -113,9 +117,7 @@ pub async fn run(
                 if let watcher::WatcherEvent::WorkItem { ref stage, .. } = event
                     && matches!(stage.as_str(), "2_current" | "3_qa" | "4_merge")
                 {
-                    slog!(
-                        "[agent-mode] CRDT transition in {stage}/; triggering auto-assign."
-                    );
+                    slog!("[agent-mode] CRDT transition in {stage}/; triggering auto-assign.");
                     auto_agents.auto_assign_available_work(&auto_root).await;
                 }
             }