fix(interceptors): settle a daemon request when the daemon closes unanswered

[moise10r]

What this changes

A daemon that closed without replying left the request pending on an unref'd timer. The wrapper could then exit 0 without writing its ledger row. The request now settles with null on end or close, after reading a final reply that has no trailing newline.

How it was verified

packages/interceptors/test/daemon-client.test.ts covers three cases:

• A daemon that closes without replying.
• A reply without a trailing newline, followed by close.
• No socket file at all.

Only the no-socket case could run here. The two server-backed cases need a Unix socket and must be confirmed in CI.

Fixes #19

Checklist

• pnpm format && pnpm typecheck && pnpm test && pnpm deadcode all pass
• Behaviour change ships with a test
• No any, no magic values, no console.* outside cli-output.ts
• If this touches the decision path: still deterministic — no LLM, network, or randomness
• If this changes a verb table: the classes that moved are named above (not applicable)
• If this changes a command, flag or file it writes: docs/ says so (not applicable)