1.2.11

Quality overhaul release.

• Premium gating now enforced for pipeline, timeline, and AI enrichment
• 14-day offline grace period: a network outage never locks out a paying user
• Fixed UTC date off-by-one in all follow-up scheduling
• Race-safe note appends, sanitized filenames, stale person index fixes
• styles.css now ships with the release (prior installs ran unstyled)
• Corrected minAppVersion to 1.1.9