Fix Bun v1.1.42 compatibility, daemon startup race conditions, and CLI polling reliability (Vibed some parts of it, but tested by me)

[sh1ftred]

This PR fixes critical compatibility issues with Bun v1.1.42 and hardens the daemon startup flow against race conditions and misleading "ready" states.

1. Fix Bun v1.1.42 compatibility (src/daemon.ts, src/routes.ts)

Bun v1.1.42 does not match requests against the declarative routes object in Bun.serve(). Every request falls through to fetch(), making the daemon completely
unresponsive. We moved route dispatch into the fetch handler using the existing routes lookup table.

Additionally, Bun.file().delete() is unavailable in v1.1.42, so we replaced all calls with unlink() from node:fs/promises.

2. Harden daemon startup against races (src/daemon.ts)

Previously, running two CLI commands in quick succession could spawn two daemon processes because PID-file creation was non-atomic and the socket-existence check was
racy.

We introduced an atomic PID lock (openSync(..., "wx")) plus a stale-PID detector:

• If a PID file exists and the process is alive → exit immediately.
• If a PID file exists but the process is dead → clean it up and proceed.
• If the atomic lock fails → another process is currently starting → exit immediately.

3. Make CLI polling wait for actual readiness (src/cli-shared.ts)

Before, the CLI only polled isDaemonRunning() (socket existence) with a hard 5-second timeout. On slower systems the daemon socket could exist before routes were
loaded, causing confusing connection errors.

We changed the loop to:

• Poll indefinitely every 100 ms instead of giving up after 5 s.
• After the socket exists, call /status and wait until the daemon reports LOCKED, UNLOCKED, or ERROR.
• Warn the user after 30 s if startup is slow.

4. Minor logging & packaging tweaks

• Moved the wallet.uninitialized log so it fires immediately when the config is missing, rather than after the HTTP server starts.
• Scoped the package name to @routstr/cocod.

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Commits included:

• 3f6ac14 – fetch-based routing + node:fs/promises unlink
• 41acdc4 – indefinite polling with /status readiness check
• 70f6951 – atomic PID lock to prevent duplicate daemon starts
• 0da617e – version bump

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If you want, I can also make it shorter / more casual, or split it into a commit-by-commit changelog style.