The final fallback in seasonConversion blindly constructed a filename
without checking if it existed on disk. When the file was missing,
handleMsgSysGetFile would send doAckBufFail, but the original Frontier
client does not gracefully handle this during quest loading — causing a
softlock instead of showing the built-in error dialog.
Now every fallback path validates file existence before returning, and
also tries the opposite time-of-day variant as a last resort. If no
file variant exists at all, the original filename is returned with a
warning log so the failure ack is still sent.
Import 18 network packet test files and 5 server infrastructure test
files, adapted for main branch APIs: fix config import alias (_config),
remove non-existent DevMode field, use global handlerTable instead of
per-server handlers map, and correct validateToken mock expectations
to include both token and tokenID arguments.
Adds go-sqlmock dependency for database mocking in signserver tests.
Port test files from v9.2.x-stable branch to increase channelserver
coverage from 13.8% to 25.6% (556 tests passing).
Adapted all files to main's struct definitions: config import alias,
Airou/CatDefinition rename, packet field mismatches, Raviente struct
differences, and maxPlayers defaults. Removed tests referencing
production code not yet on main (Player, FestivalColour, etc.).
Excluded handlers_register_test.go (Raviente completely redesigned).
When a quest or scenario file was missing, handleMsgSysGetFile sent nil
data via doAckBufSucceed, which crashed the game client. Now sends
doAckBufFail so the client can handle the missing file gracefully.
Closes#109
Resolve conflict in handlers_stage.go: keep lock-free packet
building pattern (copy session list, release lock, then build)
over upstream's in-lock QueueSendMHF approach.
Fix test compilation: remove objectIDs field references after
upstream removed it from Server struct.
Resync vendor directory with updated go.mod dependencies.
