clip-search: fmt + clippy clamp + test AppState arg

Pulls cargo fmt + clippy pass over the new files only — pre-existing
files left untouched even though fmt has drift on them. clamp(1,200)
swaps a manual min/max chain that clippy flagged. test AppState
constructor needed ClipClient::new(None) so the lib-test target
compiles.

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

src/state.rs

@@ -450,6 +450,7 @@ impl AppState {
             insight_chat,
             preview_dao,
             FaceClient::new(None), // disabled in test
+            ClipClient::new(None), // disabled in test
         )
     }
 }