fead: no idea

flake.nix

@@ -101,6 +101,12 @@
               description = "Username of the admin user created at bootstrap.";
             };
 
+            searchEngine = lib.mkOption {
+              type = lib.types.enum [ "qdrant" "fts5" ];
+              default = "qdrant";
+              description = "Search engine backend. 'fts5' uses SQLite full-text search, 'qdrant' uses Qdrant vector search.";
+            };
+
             sqlitePath = lib.mkOption {
               type = lib.types.path;
               default = "/var/lib/st-pierre/st-pierre.sqlite";
@@ -152,6 +158,7 @@
                   QDRANT_TLS = if cfg.qdrantTls then "true" else "false";
                   EMBEDDING_BASE_URL = cfg.embeddingBaseUrl;
                   EMBEDDING_MODEL = cfg.embeddingModel;
+                  SEARCH_ENGINE = cfg.searchEngine;
                   SQLITE_PATH = builtins.toString cfg.sqlitePath;
                   GIT_COMMIT = gitHash;
                   BUILD_DATE = lastUpdated;