[Epic] Stats Collection & Privacy Foundation

[LeGeRyChEeSe]

Context

This Epic covers the full implementation of anonymous statistics collection and user consent management for v4.2.0.

Goal

Enable VRHub to collect anonymized usage statistics (installed games, favorites, user tier) while guaranteeing respect for user consent and privacy.

Reference specs

• docs/CLIENT_SPEC.md — API specification & privacy model
• docs/CLIENT_IMPLEMENTATION.md — Detailed implementation guide

Sub-tasks

• [Network] Implement StatsApiService and data models #36 — Network Layer: StatsApiService & Data Models
• [Data] Implement ConsentPreferences with DataStore #37 — Data Layer: ConsentPreferences (DataStore)
• [UI] First-launch consent dialog #38 — UI: First-launch consent dialog
• [UI] Add Privacy section in Settings #39 — UI: Privacy section in Settings
• [Service] Create StatsCollector and integrate with MainRepository #40 — Service: StatsCollector & MainRepository integration
• [Worker] StatsCollectionWorker with WorkManager #41 — Worker: StatsCollectionWorker (WorkManager)
• [Tests] Unit and integration tests for Stats Collection #42 — Tests: Unit & Integration tests

Acceptance criteria

• Consent dialog is shown on first app launch
• User can change consent in Settings > Privacy
• No data is sent if consent is declined
• Stats are collected periodically (daily) via WorkManager when consent is granted
• Test coverage is > 80% on the stats module