Add a new Config Values check to bd doctor that validates:
- flush-debounce: must be a valid duration (e.g., 30s, 1m)
- issue-prefix: must start with letter, alphanumeric with dashes/underscores
- routing.mode: must be auto, maintainer, or contributor
- sync-branch: must be a valid git branch name
- routing paths: warns if configured paths do not exist
- metadata.json database: should be filename (not path), with db extension
- metadata.json jsonl_export: should have .jsonl extension
- deletions_retention_days: must be non-negative if set
This catches misconfigurations before they cause runtime errors.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
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