[Zaldaryon]

Summary

When ModDB is unreachable because the connection hangs during CONNECT or TLS handshake, Chromium aborts with net::ERR_TIMED_OUT or net::ERR_CONNECTION_TIMED_OUT. Because useQueryMod previously matched only the internal "Network request timed out" message from the launcher's own timers, connection-level timeouts were treated as plain non-timeout failures. Consequently, lookupTimedOut never tripped in useGetCompleteInstalledMods or ImportModpackPopup, causing batches to continue querying through all subsequent 30-second waves and stalling Manage Mods for 95 seconds or more.

This change maps net::ERR_TIMED_OUT and net::ERR_CONNECTION_TIMED_OUT to "Network request timed out" in requestBoundedBuffer (src/ipc/network.ts), and also recognizes both codes directly alongside the timer message in useQueryMod (src/renderer/src/features/mods/hooks/useQueryMod.ts). Quick failures such as net::ERR_CONNECTION_REFUSED or net::ERR_NAME_NOT_RESOLVED continue to report timedOut: false so remaining mods in the batch are still checked.

Type

• Bug fix
• Feature
• Performance
• Refactor or cleanup
• Tests only
• Docs or build

Checklist

• Targets dev, not main.
• npm run typecheck passes.
• npm run lint:ci passes.
• npm run format:check passes.
• npm run test:coverage passes, coverage at or above the floor in vitest.config.ts.
• npm run build:unpack passes.

Testing

1. Verified unit behavior in tests/renderer-dom/useQueryMod.test.tsx (11 tests passed), checking clean 200, 404 not-found, non-timeout errors, timer timeout, and Chromium connect timeouts (net::ERR_TIMED_OUT, net::ERR_CONNECTION_TIMED_OUT).
2. Verified batch abort behavior in tests/renderer-dom/useGetCompleteInstalledMods.test.tsx (8 tests passed): verified that connect timeouts stop subsequent lookup waves at 2 requests, while quick connection refused failures permit all 6 requests to run.
3. Verified modpack import abort behavior in tests/renderer-dom/importModpackPopup.test.tsx (28 tests passed): verified that connect timeouts stop subsequent modpack lookup requests.
4. Verified IPC transport mapping in tests/ipc/moddb-slow-transfer-timeout.test.ts (9 tests passed): verified requestBoundedBuffer unifies net::ERR_TIMED_OUT and net::ERR_CONNECTION_TIMED_OUT as "Network request timed out" and preserves other error codes.
5. All 5 repository gates passed:
   • npm run typecheck: clean
   • npm run lint:ci: 0 errors
   • npm run format:check: 100% compliant
   • npm run test:coverage: Statements 95.08%, Branches 91.30%, Functions 95.89%, Lines 97.03%
   • npm run build:unpack: Linux x64 unpacked build completed with 0 errors

Related issues

Fixes #750