Use measured query-only context across desktop CLI and MCP

apps/desktop/src-tauri/src/semantic_commands.rs

@@ -109,7 +109,7 @@ impl SemanticState {
             .acquire(InferenceRole::Foreground, threads)
             .map_err(|error| error.to_string())?;
         let mut service =
-            HybridSearch::open(database, &self.model_directory, &self.worker, threads)
+            HybridSearch::open_query(database, &self.model_directory, &self.worker, threads)
                 .map_err(|error| error.to_string())?;
         drop(admission);
         service = service.with_budget(&self.inference_budget, InferenceRole::Foreground, threads);
@@ -396,7 +396,7 @@ pub async fn hybrid_search(
                 .inference_budget
                 .acquire(InferenceRole::Foreground, threads)
                 .map_err(|error| error.to_string())?;
-            let session = HybridSearch::open(
+            let session = HybridSearch::open_query(
                 database,
                 &semantic.model_directory,
                 &semantic.worker,
@@ -480,7 +480,7 @@ pub async fn hybrid_search_measured(
                     .acquire(InferenceRole::Foreground, threads)
                     .map_err(|error| error.to_string())?;
                 let session = trace.timed("desktop.session_initialize", None, |_, _| {
-                    HybridSearch::open(
+                    HybridSearch::open_query(
                         database,
                         &semantic.model_directory,
                         &semantic.worker,