Fix build errors in Jr modules

- Fix Worker.hs to use EngineError instead of tuple
- Fix Types.hs imports for LazyText.encodeUtf8 and dayOfWeek
- Remove duplicate SortOrder from Components.hs (import from Types.hs)
- Add orphan instance pragmas to Pages.hs and Partials.hs
- Clean up unused imports

1 files changed, 1 insertions, 1 deletions

diff --git a/Omni/Agent/Worker.hs b/Omni/Agent/Worker.hs
index a8bbfc9..07293c5 100644
--- a/Omni/Agent/Worker.hs
+++ b/Omni/Agent/Worker.hs
@@ -236,7 +236,7 @@ runWithEngine worker repo task = do
   -- Read API key from environment
   maybeApiKey <- Env.lookupEnv "OPENROUTER_API_KEY"
   case maybeApiKey of
-    Nothing -> pure (Exit.ExitFailure 1, "OPENROUTER_API_KEY not set", 0)
+    Nothing -> pure (EngineError "OPENROUTER_API_KEY not set" 0)
     Just apiKey -> do
       -- Check for retry context
       maybeRetry <- TaskCore.getRetryContext (TaskCore.taskId task)