Real-time recording failure visibility and persistence for audio tracks.

This issue highlights a critical reliability gap in Quill's core recording functionality. Current failure reporting to `stderr` is insufficient, leading to a poor user experience where recording failures are only discovered post-session, impacting transcription accuracy and user trust. The proposed solution—real-time UI feedback and `meta.json` persistence—directly addresses this by making recording health transparent and enabling immediate user intervention. For a B2B SaaS product, silent failures are catastrophic, eroding confidence in data integrity. Implementing robust, visible error handling is non-negotiable for maintaining perceived quality and reducing support overhead, especially for a tool positioned as "ultraminimalist" where core functionality must be flawless. This directly impacts user retention and product credibility.