fix: resolve smoke test failures -- CLI JSON output, port collision, stale DBs

[ascorbic]

Summary

Fixes three independent issues causing pnpm test:smoke failures in core:

• CLI --json output pollution: consola.success()/consola.start() messages leaked into stdout alongside JSON data, breaking JSON.parse() in tests (and any script piping CLI output). Added configureOutputMode() that redirects consola to stderr when --json is set -- standard Unix convention. Applied to all CLI commands.
• Comments test port collision: comments.test.ts and cli.test.ts both used port 4398. When running in parallel, the second server got bumped to a different port and the client connected to the wrong server. Changed comments to port 4396.
• Site-matrix stale database files: demos/simple and demos/plugins-demo had leftover data.db files with schemas predating the migration system (no kysely_migration table). Migration 002 failed with "duplicate column name: status". The test now removes data.db and WAL/SHM sidecars before booting each site.

Testing

Full smoke suite passes: 7 test files, 225 tests, 0 failures.

pnpm test:smoke   # in packages/core

[changeset-bot]

🦋 Changeset detected

Latest commit: 25a327b

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 9 packages

Name	Type
emdash	Patch
@emdash-cms/cloudflare	Patch
@emdash-cms/plugin-ai-moderation	Patch
@emdash-cms/plugin-atproto	Patch
@emdash-cms/plugin-audit-log	Patch
@emdash-cms/plugin-color	Patch
@emdash-cms/plugin-embeds	Patch
@emdash-cms/plugin-forms	Patch
@emdash-cms/plugin-webhook-notifier	Patch

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Status	Name	Latest Commit	Updated (UTC)
❌ Deployment failed View logs	emdash-playground	25a327b	Apr 02 2026, 03:34 PM

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commit: 25a327b