Move I/O provider abstraction to ui-console, add ledger/account/problem DTOs

InputProvider/OutputProvider were api-layer types only ever implemented
by the console UI; relocate them there. Drop the unused
GuessMarketEngine/LocalGuessMarketService pair, flesh out LoadResultDTO
with success/failure variants, and make LocalGuessMarketContext.LoadAsync
report real outcomes instead of an empty placeholder.

1 files changed, 0 insertions, 5 deletions

diff --git a/api/src/main/java/market/guess/OutputProviderFactory.java b/api/src/main/java/market/guess/OutputProviderFactory.java
deleted file mode 100644
index b4eb7f5..0000000
--- a/api/src/main/java/market/guess/OutputProviderFactory.java
+++ /dev/null
@@ -1,5 +0,0 @@
-package market.guess;
-
-public interface OutputProviderFactory {
-  OutputProvider create();
-}