docs: community growth plan and v3.0 release checklist

- Y5-01: docs/community-growth-plan.md — 3 growth phases from
  dev preview to 10K nodes, tracking via opt-in analytics
- Y5-04: docs/v3-release-checklist.md — prerequisites, release
  steps (code freeze, ISO builds, checksums), post-release plan

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

docs/community-growth-plan.md

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+# Community Growth Plan: Path to 10,000 Nodes
+
+## Current State
+- 2 active nodes (dev/test)
+- Opt-in analytics backend implemented (Y4-03)
+- ISO installer builds automatically
+- App marketplace with 35+ apps
+
+## Growth Phases
+
+### Phase 1: Developer Preview (0-100 nodes)
+- Release ISO on GitHub
+- Bitcoin/sovereignty community outreach
+- Documentation and video tutorials
+- Bug bounty program
+
+### Phase 2: Early Adopters (100-1,000 nodes)
+- Pre-built hardware kits (RPi5, NUC)
+- Community forum (Discourse or Matrix)
+- Ambassador program
+- Conference presentations (Bitcoin, Nostr)
+
+### Phase 3: Growth (1,000-10,000 nodes)
+- Partnership with hardware vendors
+- App developer ecosystem
+- Multi-language support (5 languages ready)
+- Paid support tier for businesses
+
+## Tracking
+- Opt-in telemetry via analytics.get-snapshot RPC
+- Nostr relay-based node discovery (privacy-preserving)
+- GitHub stars/downloads as proxy metrics

docs/v3-release-checklist.md

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+# v3.0 Release Checklist
+
+## Prerequisites
+- [ ] 10,000+ active nodes (Y5-01)
+- [ ] Clean security audit report (Y5-03)
+- [ ] Zero-downtime update mechanism tested (Y5-02)
+- [ ] 30-day soak test passed on 5+ hardware platforms
+- [ ] All Year 2-4 features complete and stable
+
+## Release Steps
+1. Freeze code (no new features)
+2. Run full test suite on all certified hardware
+3. Security audit findings resolved
+4. Update CHANGELOG.md and version numbers
+5. Build ISO for x86_64 and ARM64
+6. Create GitHub release with SHA256 checksums
+7. Publish release announcement
+8. Update documentation site
+9. Tag `v3.0.0` in git
+
+## Post-Release
+- Monitor opt-in telemetry for crash reports
+- 48-hour hotfix window (team on standby)
+- Community announcement on Nostr and forums