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docs(pipeline): PARK Track MP - FPS-swing win banked, ECS+remainder deferred

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User decision 2026-07-05: the FPS/ms wild-fluctuation complaint is
resolved (MP0 profiler + MP1a Content extraction + MP-Alloc safe batch,
all shipped + merged to local main, user-confirmed steady FPS). ECS
(MP3) and the rest are deferred to the future - ECS is the throughput
lever (higher avg FPS), a different goal from the steadiness we fixed;
revisit only if a higher raw FPS number is specifically wanted. Rust
rejected. Rationale captured in memory project_mp_track_findings.md.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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Erik 2026-07-06 00:57:04 +02:00
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@ -1200,6 +1200,17 @@ port in any phase — no separate listing here.
### Track MP — Modern Pipeline (performance side track; user-commissioned 2026-07-05)
> **⏸ PARKED 2026-07-05 (user decision) — WINS BANKED, REMAINDER DEFERRED TO THE FUTURE.**
> The track's actual trigger — the FPS/ms counter *fluctuating wildly* (read by the
> user as inefficiency) — is **RESOLVED**: MP0 (frame profiler), MP1a (Content
> extraction), and **MP-Alloc safe batch** shipped and merged to local main
> (`093cdb6d`, suite 4188 green, user-confirmed steady FPS). **ECS (MP3) + the
> rest are DEFERRED**: ECS is the *throughput* lever (raise avg FPS ~230→300), a
> DIFFERENT goal from steadiness — revisit ONLY if the user wants a higher raw FPS
> number and accepts the rewrite risk. Rust rejected. Parked (resume from the table
> below): MP1b pak/bake (needs the 865 GB EnvCell-dedup slice; loading-speed lever),
> MP-Alloc hard sites, MP1c, MP2. Full rationale: `project_mp_track_findings.md`.
**Spec:** `docs/superpowers/specs/2026-07-05-modern-pipeline-design.md` (the
umbrella design — read it first). **Goal:** smoothness first (no frame over
~16 ms during any traversal), then 300+ FPS sustained in dense towns.