fix(events): normalize path separators so file.changed globs match on Windows

[addyCooks]

Description

chokidar reports changed files using the platform separator, so on Windows the router was asked to match a /-authored pattern like docs/** against docs\guide.md a comparison that can never succeed. Path-scoped file.changed subscriptions therefore never fired, and nothing reported a problem: the daemon started, reported healthy and logged nothing, because no code path treats a non-match as an error.

The same mismatch ran the other way too. globToRegex compiles * to [^/]*, which does not exclude a backslash, so a root-scoped pattern such as *.md matched the nested sub\a.md and dispatched an unattended agent run against a file that was deliberately scoped out.

Normalize in FileWatcherSource.emit rather than only in the matcher, so the router, activity reports and the payload handed to a triggered agent all read one path shape; matchGlob normalizes both pattern and path defensively. Once the path uses /, [^/] stops at a real separator and the over-match disappears along with the under-match.

The picomatch swap noted at event-router.ts:100 is left as a follow-up it is not resolvable as a transitive dependency under pnpm's strict linking and would need adding as a direct one.

Closes #964.

Type of Change

• Bug fix
• New feature
• Breaking change
• Documentation update

Changeset

• Added a changeset (pnpm changeset) describing this change for the changelog

Testing

Automated Tests

• New features include passing tests in .spec.ts/tsx files
• All existing tests pass (pnpm test:all completes successfully)
• Tests cover both success and error scenarios

Manual Testing

• Tested with Ollama
• Tested with OpenRouter
• Tested with OpenAI-compatible API
• Tested MCP integration (if applicable)

Checklist

• If this was for an open issue, I was assigned to it
• Code follows project style guidelines
• Self-review completed
• Documentation updated (if needed)
• No breaking changes (or clearly documented)
• Appropriate logging added using structured logging (see CONTRIBUTING.md)

[will-lamerton]

Looking great @addyCooks :)

[addyCooks]

Thankyou @will-lamerton !