fmt: cargo fmt sweep

No logic changes - line reflow, brace placement, and method-chain splits
across handlers / personas / state / faces / knowledge / insights_dao /
knowledge_dao / populate_knowledge. Picked up incidentally while running
fmt for the sms-search work.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/bin/populate_knowledge.rs

@@ -185,9 +185,9 @@ async fn main() -> anyhow::Result<()> {
         Arc::new(Mutex::new(Box::new(SqliteKnowledgeDao::new())));
     let face_dao: Arc<Mutex<Box<dyn FaceDao>>> =
         Arc::new(Mutex::new(Box::new(SqliteFaceDao::new())));
-    let persona_dao: Arc<Mutex<Box<dyn image_api::database::PersonaDao>>> = Arc::new(
-        Mutex::new(Box::new(image_api::database::SqlitePersonaDao::new())),
-    );
+    let persona_dao: Arc<Mutex<Box<dyn image_api::database::PersonaDao>>> = Arc::new(Mutex::new(
+        Box::new(image_api::database::SqlitePersonaDao::new()),
+    ));
 
     // Pass the full library set so `resolve_full_path` probes every root,
     // even when --library restricts the walk. A rel_path shared across