asepharyana 0dff7770a1 perf(ai-moderation): speed up analysis queue (ramai + sepi)
- Parallelize per-user reputation/profile fetches in textBatchProcessor
  (was a serial ~2N DB/Redis round-trip loop per sub-batch; now Promise.all
  over unique users). Cuts per-batch latency, biggest win on small/quiet
  batches.
- Make the LLM concurrency semaphore dynamic (cached per config value) instead
  of frozen at import time, so AI_LLM_MAX_CONCURRENT is tunable without code
  change and reflects current config.
- Bump AI_LLM_MAX_CONCURRENT default 5 -> 8 (gemini-flash-lite is cheap; helps
  throughput when busy).
- Lower AI_ANALYSIS_DEBOUNCE_MS 500 -> 250 (snappier first-message analysis
  when quiet).
- Lower AI_ANALYSIS_RECOVERY_INTERVAL_MS 15000 -> 10000 (stuck/errored
  messages re-analyze sooner).

tsc, biome, vitest (129) all clean.
2026-08-16 18:51:13 +07:00
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