Add a support modal with usage stats, tier and license links, share control, and offline-safe outbound CTAs. Surface support from the header, sidebar, user menu, dashboard card, and settings "Support & Community" section without hiding entry points when a supporter license is active.
Introduce UsageStatsService and a persisted users.support_stats_reports_generated counter incremented on key report exports and custom report views. Add SupportPromptService for session-scoped soft toasts (after export, dashboard milestones, long session via POST /donate/request-soft-prompt).
Wire consent-aware track_event names support.* and mirror funnel rows in DonationInteraction; fix has_recent_donation_click to treat link_clicked as a recent click. Document events and SUPPORT_* / migration notes in docs.
Tests: tests/test_support_services.py for prompt and usage stats behavior.
Switch product and installation telemetry to OTLP/Grafana across runtime config, CI injection, docs, and tests to unify telemetry transport and simplify privacy-focused opt-in behavior.
- Add telemetry-architecture.md: base vs detailed layers, schema, consent, retention
- ARCHITECTURE: link to telemetry doc and two-layer overview
- analytics.md: two-layer telemetry section and link to architecture
- privacy.md: update base/detailed analytics and retention wording
- all_tracked_events.md: document base_telemetry.first_seen/heartbeat, opt-in events
Dries Peeters