feat: add LLM import pipeline with file upload and text input

app/Main.hs

@@ -83,6 +83,12 @@ main = do
     putStrLn $ "[roux] config file: " <> optConfigFile opts
 
     -- Load config (file may be missing; LLM features disabled gracefully)
-    _config <- Config.loadConfig (optConfigFile opts)
-    waiApp <- Roux.app (optRecipeDir opts)
+    configResult <- Config.loadConfig (optConfigFile opts)
+    let config = case configResult of
+            Right cfg -> cfg
+            Left _ -> Config.RouxConfig Nothing
+    case configResult of
+        Left err -> putStrLn $ "[roux] warning: " <> err <> " — LLM features disabled"
+        Right _ -> pure ()
+    waiApp <- Roux.app (optRecipeDir opts) config
     Warp.runSettings settings waiApp