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feat(analytics): flag-gated slices for spikes 616/617/618/619 (#479 #480 #481 #482) - #594
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Darkvader-ship-it merged 1 commit intoOct 20, 2026
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…STELLAR#479 PHASE-STELLAR#480 PHASE-STELLAR#481 PHASE-STELLAR#482) phase-178 (PHASE-STELLAR#479): leaderboard integrity — multiplicative scoring decayed × farmPenalty × sybilDiscount (7d half-life decay, event-burst / counterparty-concentration / point-velocity rules floored at 0.15, sybil band discounts with missing band = caution), public GET + admin-keyed POST /api/leaderboard scoring before persisting. phase-179 (PHASE-STELLAR#480): retention and GDPR erasure — TTL sweeps for expired SEP-10 sessions, consumed challenges and 90-day notifications (fail-safe on missing timestamps); POST /api/user/erasure gated by legal hold (423), fingerprint-only receipts in gdpr-erasure-log.json, consent ledger deliberately retained per Art. 17(3)(b). phase-180 (PHASE-STELLAR#481): analytics warehouse export — flat row model with unconditional redaction, schema-versioned manifest emitted as NDJSON header or Parquet key_value_metadata (hyparquet-writer), admin-keyed GET /api/analytics/export streaming downloads with checksum headers. phase-181 (PHASE-STELLAR#482): anomaly detection — robust z-score (median+MAD) on volume and per-run counter deltas, deterministic balance-drop tiers, detect-before-push baselines, hourly cron routing findings to webhooks with distinct kind+metric titles. All behind default-off flags; 45 tests, findings docs, flag rows and technical sections updated.
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Summary
Delivered per spike:
Verification: 45 new tests all pass. Typecheck, lint, and full-suite failures were each confirmed pre-existing on main via stash-and-retest (duplicate viewerSignatureShort export, faucet-route syntax error, flaky compliance test) — no regressions from this branch.
Docs: 4 spike findings, 4 PROJECT_ARCHITECTURE.md §10 rows, 4 docs/TECHNICAL.md §24–27 sections, .env.local.example block, vercel.json crons.