Node and dashboard 24h capacity, network, and disk IO charts only used the
latest limited raw snapshots (120/500 rows), so historical hour buckets stayed
empty. Prefer ClickHouse hourly aggregates with counter deltas, and fall back
to raw snapshots when aggregation is unavailable.
- Scan ClickHouse count()/countIf() aggregates as uint64 before int64 conversion
- Fix access log list count, region stats, and delete pre-count queries
- Aggregate dashboard 24h traffic totals from hourly trend buckets
- Show current hour value in traffic trend chart summary
- Rename docker-compose service to openflare
- Remove redundant config preview section from performance page