Profile data selection logic from Clickhouse based on configurable retention

The current implementation had a critical flaw that caused identical data to be returned for different time ranges:

`
// OLD BUGGY LOGIC
retentionInterval := time.Hour * 24 * 14 // Fixed 14-day threshold
if now.Sub(start) >= retentionInterval {
// ❌ PROBLEM: Forces day-level aggregation too early
result["1day_historical"] = makeTimeRange(makeStartOfDay(start), makeEndOfDay(end))
return result // ❌ Both URLs get same day boundaries!
}
`

Problem Example:

URL 1: 2025-08-12T15:00:47Z → 2025-08-12T16:00:47Z
URL 2: 2025-08-12T16:00:24Z → 2025-08-12T17:00:24Z

Both became: 2025-08-12T00:00:00Z → 2025-08-12T23:59:59Z (identical!)

This was because of the hardcoded logic which assumes that retention period is 14 day set for Clickhouse. However, this set up can differ based on retention periods configured.