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/clip_search.rs

@@ -121,7 +121,7 @@ pub async fn search_photos(
         }));
     }
 
-    let limit = query.limit.min(200).max(1);
+    let limit = query.limit.clamp(1, 200);
     let threshold = query.threshold.clamp(-1.0, 1.0);
 
     // 1. Encode the query text. Fast — Apollo's text encoder is ~50ms
@@ -174,7 +174,10 @@ pub async fn search_photos(
         match dao.list_clip_index(
             &ctx,
             &library_ids,
-            query.model_version.as_deref().or(Some(&query_resp.model_version)),
+            query
+                .model_version
+                .as_deref()
+                .or(Some(&query_resp.model_version)),
         ) {
             Ok(r) => r,
             Err(e) => {
@@ -257,7 +260,8 @@ pub async fn search_photos(
                 Err(e) => {
                     log::warn!(
                         "clip_search: find_by_content_hash failed for {}: {:?}",
-                        hash, e
+                        hash,
+                        e
                     );
                     continue;
                 }