feat: add Google code retrieval across desktop CLI and MCP

crates/searchi-service/tests/query_cache.rs

@@ -48,6 +48,9 @@ impl EmbeddingProvider for CountingProvider {
         }
         Ok(vector)
     }
+    fn embed_code_query(&mut self, query: &str) -> Result<Vec<f32>> {
+        self.embed_query(&format!("code-task:{query}"))
+    }
     fn query_diagnostics(&self) -> BTreeMap<String, u64> {
         BTreeMap::from([("worker_inference_us".into(), 123)])
     }
@@ -63,6 +66,37 @@ fn count(calls: &Calls) -> usize {
     calls.queries.lock().unwrap().len()
 }
 
+#[test]
+fn query_task_scopes_cache_and_code_debug_never_replays_old_worker_counters() -> Result<()> {
+    let (_directory, mut service, calls) = fixture()?;
+    let normal = SearchOptions::default();
+    let code = SearchOptions {
+        code_only: true,
+        ..Default::default()
+    };
+    service.search("parse JSON", 5, &normal)?;
+    service.search("parse JSON", 5, &code)?;
+    assert_eq!(
+        *calls.queries.lock().unwrap(),
+        vec!["parse JSON", "code-task:parse JSON"]
+    );
+    let cached = service.search_measured("parse JSON", 5, &code, true)?;
+    assert_eq!(count(&calls), 2);
+    let embedding = cached
+        .metrics
+        .trace
+        .unwrap()
+        .into_iter()
+        .find(|s| s.name == "semantic.query_embedding")
+        .unwrap();
+    assert_eq!(embedding.counters["code_task"], 1);
+    assert_eq!(embedding.counters["query_cache_hit"], 1);
+    assert!(!embedding.counters.contains_key("worker_inference_us"));
+    service.search("parse JSON", 5, &normal)?;
+    assert_eq!(count(&calls), 2);
+    Ok(())
+}
+
 #[test]
 fn exact_trimmed_queries_reuse_vectors_but_case_and_model_fingerprint_do_not() -> Result<()> {
     let (_directory, mut service, calls) = fixture()?;