Ignacy Łątka e226fe5404 test: speed up long unit tests (#153) ...

## Summary

These tests were taking up too long.

| File | Before | After |
|------|-------:|------:|
| `fetch-timeout.test.ts` hanging-POST test | 6281ms | ~600ms |
| `workspace-reader.test.ts` (full file) | ~4500ms | ~140ms |
| `gather-workspace-data.test.ts > valid snapshot` | ~590ms | ~3ms |

**Package totals:** `packages/mcp` 6.44s → ~830ms,
`packages/tool-server` 5.29s → ~790ms.

### What was slow and why

- `fetchWithReconnect` is now exported from `mcp-server.ts` so the test
uses the real function. The config accepts an `expBackoffBase` and a
`fetchTimeoutMs` so the hanging-POST test shrinks the backoff base to
`5ms` and the per-attempt timeout to `100ms` (~575ms total)

- every `readWorkspaceSnapshot` call spawned 8 real subprocesses
(`node`, `npm`, `yarn`, `pnpm`, `bun`, `pod`, `eas`, `expo`) via
`runVersionCommand`. Added `vi.mock("node:child_process", ...)` that
stubs `execFile`.

2026-04-28 15:15:03 +02:00

..

auto-screenshot.test.ts

refactor(mcp): split mcp package into argent, argent-cli, argent-installer, argent-mcp, argent-tools-client (#162)

2026-04-28 08:36:24 +02:00

content.test.ts

refactor(mcp): split mcp package into argent, argent-cli, argent-installer, argent-mcp, argent-tools-client (#162)

2026-04-28 08:36:24 +02:00

fetch-timeout.test.ts

test: speed up long unit tests (#153)

2026-04-28 15:15:03 +02:00

mcp-server.test.ts

refactor(mcp): split mcp package into argent, argent-cli, argent-installer, argent-mcp, argent-tools-client (#162)

2026-04-28 08:36:24 +02:00

tool-mapping.test.ts

refactor(mcp): split mcp package into argent, argent-cli, argent-installer, argent-mcp, argent-tools-client (#162)

2026-04-28 08:36:24 +02:00