Backend, sync, infra, docs: ETag, API versioning, k8s, web scaffold, Android 16, domain stubs
- Backend: ShallowEtagHeaderFilter for /api/v1/*, API-VERSIONING.md, README (tenant, CORS, Flyway, ETag)
- k8s: backend-deployment.yaml (Deployment, Service, Secret/ConfigMap)
- Web: scaffold with directory pull, 304 handling, touch-friendly UI
- Android 16: ANDROID-16-TARGET.md; BuildConfig STUN/signaling, SMOAApplication configures InfrastructureManager
- Domain: CertificateManager revocation stub, ReportService signReports, ZeroTrust/ThreatDetection minimal docs
- TODO.md and IMPLEMENTATION_STATUS.md updated; communications README for endpoint config
Co-authored-by: Cursor <cursoragent@cursor.com>
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