style: format seluruh workspace dengan cargo fmt

Menyeragamkan format kode sesuai rustfmt (126 file). Sebelumnya
lefthook pre-commit 'cargo fmt --check' akan gagal pada commit apa pun.

apps/gateway/src/bin/seed.rs

@@ -4,7 +4,6 @@
 //! configuration files plus a seed session for development/testing.
 //! Invoked as `cargo run --bin seed`.
 
-
 fn main() -> anyhow::Result<()> {
     let store = zesdex_domain::core::Store::new();
     store.ensure_dirs()?;
@@ -46,13 +45,11 @@ fn main() -> anyhow::Result<()> {
 
     // Create a seed session
     let session_id = uuid::Uuid::new_v4().to_string();
-    let session = zesdex_domain::auth::Session::new(
-        session_id.clone(),
-        "Seed Session".to_string(),
-    );
+    let session = zesdex_domain::auth::Session::new(session_id.clone(), "Seed Session".to_string());
     // Persist via the session repository
     use zesdex_domain::SessionRepository;
-    let repo = zesdex_infrastructure::persistence::iam::session_repo::FileSystemSessionRepository::new();
+    let repo =
+        zesdex_infrastructure::persistence::iam::session_repo::FileSystemSessionRepository::new();
     repo.save_session(&store.base_dir, &session)?;
     tracing::info!("Seed session created: id={session_id}");
 

apps/gateway/src/bin/test_load.rs

@@ -5,12 +5,12 @@ fn main() {
     let base_dir = dirs::home_dir().unwrap().join(".local/share/zesdex");
     let repo = JsonAppConfigRepository::new();
     let config = repo.load(&base_dir).unwrap();
-    
+
     println!("Providers:");
     for (k, v) in &config.providers {
         println!(" - {} (default model: {:?})", k, v.default_model);
     }
-    
+
     println!("Default provider: {}", config.default_provider);
     println!("Default model: {}", config.default_model);
     println!("Model roles:");

apps/gateway/src/bin/test_parse.rs

@@ -16,7 +16,10 @@ struct ClaudeSettings {
 }
 
 fn main() {
-    let path = dirs::home_dir().unwrap().join(".claude").join("settings.json");
+    let path = dirs::home_dir()
+        .unwrap()
+        .join(".claude")
+        .join("settings.json");
     println!("Path: {:?}", path);
     match std::fs::read_to_string(&path) {
         Ok(content) => {

apps/gateway/src/main.rs

@@ -12,7 +12,11 @@ use clap::Parser;
 
 /// Zesdex — autonomous AI coding agent.
 #[derive(Parser, Debug)]
-#[command(name = "zesdex", version, about = "Autonomous AI coding agent with TUI")]
+#[command(
+    name = "zesdex",
+    version,
+    about = "Autonomous AI coding agent with TUI"
+)]
 struct Cli {
     /// Run as background daemon with IPC socket
     #[arg(long)]