CLI timeout test includes TypeScript process startup

[github-actions]

Expected Behavior

The CLI deadline test measures request time independently of process startup.

Current Behavior

CI startup took roughly 3.3 seconds and exceeded the 2.5-second assertion in test/request-io.test.ts.

Possible Solution

Start timing when the local server receives the request; retain the exit-code and single-request assertions.

Minimal Reproducible Example

Run pnpm test on a CI runner with slow Node/tsx startup.

Context

Observed in PR #137, CI run 34253485246.

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_{Logged by Mablr in tempoxyz/wallet-cli at 2f98203. Filed by Frog.}