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/infrastructure/src/workflow/hive_mind/synthesis.rs

@@ -10,10 +10,7 @@ use zesdex_domain::workflow::NodeOutput;
 ///
 /// Flow: combine node outputs → return consensus text.
 /// Uses simple concatenation-based synthesis (avoids LLM call dependency).
-pub async fn synthesize_consensus(
-    nodes: &[NodeOutput],
-    _tool_ctx: &ToolCtx,
-) -> Result<String> {
+pub async fn synthesize_consensus(nodes: &[NodeOutput], _tool_ctx: &ToolCtx) -> Result<String> {
     info!("Synthesizing consensus from {} nodes", nodes.len());
 
     let mut combined = String::new();