Daily activity digest

Build a Hive-owned daily activity digest and restore an intuitive 'hive digest' entry point. Hive must create a durable per-day record of work across all registered projects. Hive Web is the full reading surface: provide one global daily view with project filters, showing completed or materially advanced tasks, work in progress, pull-request activity, and important failures and recoveries. Include tasks that have unanswered questions, but do not reproduce the question text; make each task clickable into its normal answer flow. The native Telegram bot may send a concise digest and link to the Web view, while remaining a narrow notification and control bot rather than becoming an OpenClaw/Hermes-style general agent. Keep PRDigest as a separate project and integrate it where useful for PR facts or prose; PRDigest must not own the broader Hive activity digest. Resolve still-open product details such as retention, day/time-zone boundaries, delivery schedule, and exact UI during the workflow.