Analytics: add request-log retention and rate-based write coalescing

[nanaf6203-bit]

Context

src/analytics/analytics.interceptor.ts + service record RequestLog per request (createMany in a time window, per spec) with no retention.

Problem

As the analytics interceptor applies to every HTTP request, RequestLog grows at request volume; pruning is absent (CleanupService gap) and burst writes still queue. Analytics data becomes a storage and maybe compliance liability.

Proposed approach

Add RequestLog retention to CleanupService (CLEANUP_REQUESTLOG_DAYS), coalesce writes to Redis buffers with a flush cron, and surface write-failure rates in metrics.

Acceptance criteria

• RequestLog is bounded; interceptor: no DB strain at peak traffic.

[VeronicDev]

@VeronicDev has applied to work on this issue as part of the Stellar Wave Program's 9th wave.

Hello Maintainer, I can fix this please assign.

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[TheFaith-Code]

@TheFaith-Code has applied to work on this issue as part of the Stellar Wave Program's 9th wave.

Hi, I'd like to work on this issue.

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[harmondconsultant-png]

@harmondconsultant-png has applied to work on this issue as part of the Stellar Wave Program's 9th wave.

hy, i can work on it pleas assign

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[B3N-max]

@B3N-max has applied to work on this issue as part of the Stellar Wave Program's 9th wave.

Hello Maintainer
i would love to work on this issue
please kindly assign

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