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SpaceXAI pack: PR-A/D/F1/F5 ControlledSourceReexposure (default off) - #195

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FalconOrtiz:spacexai/ire-a-d-f1-f5-2026-09-08
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SpaceXAI pack: PR-A/D/F1/F5 ControlledSourceReexposure (default off)#195
FalconOrtiz wants to merge 1 commit into
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FalconOrtiz:spacexai/ire-a-d-f1-f5-2026-09-08

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Summary

Creator reach equilibrium proposal from Falcon Ortiz / @FalconOrtiz (IRE).
SpaceXAI owns merge. Pattern: docs/BIDIRECTIONAL_BOOST_CHANGE.md (FS → A/B → ship).

Base: 902a06f.

Pack

Include Role Treatment
PR-D Serve-mix telemetry hooks Land on (classify original|rt|quote)
PR-A FollowAuthor / ProfileClick rebalance FS A/B only — defaults stay 4 / 0 / 20
PR-F1 Prefer-original For You RetweetDedup FS-gated, default false
PR-F5 ControlledSourceReexposure Land code; Enable=false / K=1 ≡ today; InNetworkOnly; source_key = RT → quoted → tweet_id; ≤1/slate

Out of scope

F2b open burn-off · F4 Age prolong · PR-E OCR ranking · VF SpamHighRecall loosen · OON RT enable · AgeFilter rewrite

Evidence (empirical, not SLOs)

  • Cohort follow/imp 0.00636% (79 / 1.24M) vs Batch B 0.0644%
  • Soft weights: FollowAuthor=4 vs CopyLink=20, ProfileClick=0
  • Standalone pack tests 22/22 · Python F5 smoke 22/22 · IRE eng GREEN

Docs in this PR

docs/spacexai-ire-2026-09-08/ — cover, F5 impl, A sketch, D note, RT/quote context, STATUS, ENG_GREEN

Test plan

  • spacexai-pack-tests cargo test 22/22 (standalone, no private deps)
  • Python e2e_smoke_f5 22/22
  • Monorepo: cargo test -p home-mixer for retweet_dedup / controlled_source_reexposure / serve_card_classify after merge into private tree
  • FS: leave F5 Enable=false / K=1 until D serve-mix baseline; then A/B K=2–3

Creator reach equilibrium proposal from @FalconOrtiz / IRE.
- PR-A: FS A/B arms documented; defaults stay Follow=4 Profile=0 CopyLink=20
- PR-F1: EnablePreferOriginalRetweetDedup (default false)
- PR-F5: ControlledSourceReexposure Enable=false K=1 InNetworkOnly; source_key RT|quote|id
- PR-D: serve card classify hooks (original|rt|quote)

SpaceXAI owns merge. Evidence + eng notes under docs/spacexai-ire-2026-09-08/.
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