138 bare db.Exec calls across 22 handler files silently dropped write
errors. Each is now wrapped with error check and zap logging.
4 QueryRow sites that legitimately return sql.ErrNoRows during normal
operation (new player mezfes, festa rankings, empty guild item box)
now filter it out to reduce log noise.
Fix unchecked error returns on bf.Seek(), db.Exec(), QueryRow().Scan(),
pkt.Build(), logger.Sync(), and binary.Write() calls. The linter now
passes with 0 errors, build compiles, and all tests pass with -race.
Re-enable the golangci-lint job in CI (disabled Oct 2025), update to
Go 1.25 and golangci-lint-action v7. Fix errcheck, gosimple S1009,
staticcheck SA4031 and SA2001 errors across 54 files. Remaining ~39
lint errors will be addressed in follow-up commits.
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.
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
