Add consent-first proactive check-in patterns

Goal

Show how a SaaS can send useful agent check-ins from deterministic product state without becoming noisy, creepy, or promotional.

Scope

• Opt-in, cadence, timezone, quiet hours, frequency caps, pause, resume, STOP, and unlink.
• Deterministic triggers with agent-written concise copy.
• Ranking, grouping, stale-trigger cancellation, deduplication, and kill switch.
• Conversational act/snooze/dismiss/open behavior.
• Privacy-minimized lock-screen copy and analytics.

Acceptance criteria

• A provider-neutral schedule/trigger interface and one Linq example ship.
• Tests cover repeated, stale, completed, dismissed, paused, quiet-hours, opted-out, and retry cases.
• Transactional and marketing consent remain separate.
• The docs include a cohort-limited rollout and complaint/opt-out review checklist.