sentiment-engine/prod/docs/POST_FINISH.md

POST_FINISH — the parking lot (parked with love, not killed)

Standing rule (operator + Fable, 2026-07-10): until the FINISH LINE is crossed, new scope lands HERE, not in code. Fable answers new scope with "parked" — even to the operator. Especially to the operator.

THE FINISH LINE (frozen — only these three count)

1. Parity RESIDUAL = 0 over N windows (codex dossier machinery, uv/parity-certification)
2. 72h clean on VST on the merged stack (a2b0fac+): no §4 anomalies — no orphan orders, no journal gaps, tripwire quiet
3. Operator gate: small real capital, separate account, BLUE untouched

SEQUENCED (above parked — operator 2026-07-11: "it is costing us money")

• Smart OB exec: PINK ExecutionRouter integration — FIRST task upon parity (item 1) completion, before/alongside items 2–3. Asset exists certified (265 tests incl. live VST E2E, maker_both ran production). Slots below the kernel at the venue-adapter seam — parity-invisible. Economics: taker RT ~0.10% → maker-both ~0.04%; smoke-run day-1 flips breakeven → +0.9% equal-weight. Research: 90%+ of orders fill as maker ("move to us"). CRITICAL READING: prod/docs/BingX_FILL_CHARACTERIZATION_AND_ADVANTAGES.md. SOA ADJUDICATION (first sub-task, Fable): TWO exec assets exist — (a) PINK ExecutionRouter: maker/taker POLICY, 265 tests, maker_both ran live; (b) BLUE alpha_engine/execution/ SmartPlacer: OB-aware PLACEMENT (fill_simulator w/ 30s bookDepth, signal_confidence_adapter bridging Alpha conviction → placement, ob_reader, smartplacer_constants). Likely complementary (Router = maker-vs-taker; SmartPlacer = where-in-book). Adjudicate router ∪ placer ∪ union against the fill-characterization doc before integrating either.

PARKED (specced where noted; zero build until finish)

• IMPETUS build — spec IMPETUS_SPEC.md + annex IMPETUS_SPEC_ANNEX_UV_INTEGRATION.md (steel-clock plug, ASEx placement, last-tick table). Paper done; build parked.

• MALKHUT hose adaptation — Fable's job when unparked (memory: malkhut-hose-adaptation-fable)

• JIMINY / PINOCCHIO — ASEx fleet scoreboard + false-green detector

• TP/SL cadence ladder L2/L3 — pulse-host tick path, Rust reflex engine (spec UV_TPSL_ENGINE_AND_REMAINING_DEV_SPEC.md §1)

• 305M ring upgrade — producer-side cached index in uv_steel::ring (PASS9, ~10 lines + bench)

• wCQ wait-free MPMC — L3 mailbox candidate (305MM_OPS_ALGO_ANNEX_FIFO.md)

• ★ IMPETUS WIRE-ATOMIC (operator 2026-07-11, "insane, write it down") — exchange-wire→zinc-shm ATOMIC: the venue packet's tick becomes visible to shm readers as ONE indivisible act, no intermediating copies/queues/threads. Concretely: kernel-bypass ingest (AF_XDP / DPDK / io_uring registered buffers — NIC DMAs frames into user memory), parse-in-place off the wire buffer, single seqlock commit into impetus_last as the SAME pinned thread's next instruction. Latency floor becomes NIC+parse (~µs), and the atomicity contract extends end-to-end: a reader can never observe a tick the wire didn't deliver, nor miss one it did (A2/A5 doctrine stretched to the physical boundary). Prereqs: IMPETUS v1 shipped; WS/stream adapters (annex R2); pinned-emit thread (annex R4); flat-C last-tick table (R3) — each is a rung TOWARD this. TLS termination path (operator follow-up: the sought term was "homomorphic" — FHE itself is 1e6-1e9x too slow, wrong universe): SOA answers preserving wire-atomicity, in preference order: (1) NIC inline TLS RX offload (ConnectX/kTLS-offload — silicon decrypts AES-GCM at wire speed BEFORE DMA; buffer lands already-plaintext; CPU never sees ciphertext); (2) kernel kTLS (decrypt in-kernel, zero-copy up); (3) VAES/AES-NI decrypt-IN-PLACE (plaintext overwrites ciphertext in the same buffer, ~1-4 cycles/byte — "decoded where it lies").

• uv_steel crate extraction — pulse-host modules → shared workspace crate

• PASS9 mass-test regeneration — far-end assertions, no broken codegen

• BLUE trade_events dedup DDL — operator-blessed write into dolphin ns

• Vendor reconciliation — T0-DEVIATION port upstream + vendor_sync --from-committed-HEAD hardening

• UvExecRunner consolidation — route legacy direct async path through the ASEx owner or retire it (execution-gate dossier §6.6)

• Journal EXIT-labeling cleanup — no-entry scans mislabeled EXIT (cosmetic)

• Fleet identity hygiene — stale zellij names, fossil handles, split bus

• ★ SHARP TODO (operator 2026-07-11): 375-branch upside study — realized upside under favorable-extension vs realized loss; left-tail cure hypothesis (losses huge incl. scan-cadence SL misses; winners cramped). Depends on: MAX_HOLD full-modulation port + ingress journaling (UV_EXIT_DOCTRINE_PARITY_DESIGN.md D1.2). OB-cascade cause tuning rides the same data.

Not parked (allowed work)

Anything that directly serves items 1–3, bug fixes on the live path, and operator-ordered exceptions (which must say "unpark X" explicitly).

DESIRABLE (north-star, operator 2026-07-11 — not parked, no build yet)

• Full-universe picking: system should someday select from the ENTIRE Binance (~500-asset, as minimum reference) universe, not the 50-symbol NG7 feed slice — research indicates full-universe selection improves ROI/WR/joy. MALKHUT asset directory (malkhut/assets/) is built to that scale; the feed is the current bottleneck, not the store.