LUME Chain 1 — Echelon Layer 4 + 128D Temporal Closure

LUME Chain 1 — Echelon Layer 4 + 128D Temporal Closure

Status: RELEASED (plan + patches ready to apply, live verification pending)
Subject: Close the body-time loop in MotionMix Echelon
Started: 2026-05-08
Released: 2026-05-08
Chain owner: Mohamed
Execution model: META:OMEGA + META:HYDRA collapsed (single pass), 8-lens reviewed

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What this release contains

This release bundles a VALIDATED PLAN + READY-TO-APPLY PATCHES for closing the body-time loop in the MotionMix Echelon engine. It does NOT contain a fully shipped + verified live system. Live verification is gated on Codex / Mohamed applying the patches on Mac4 + running the live test on iPhone 16.

Three real bugs identified (Crucible Stage 1 §3, synthesis §1)

1. `state.phase` is never written by `SimpleLatentUpdater`. Source: `cc-brain/src/latent/simple.rs:166-178`. Slot [70] of the 128D vector is dead-zero.
2. Backend enum dispatch is INVERTED between Swift and Rust. Source: `EchelonBridge.swift:62-65` (Swift declares `simple=0, learned=1, dell=2`) vs `cc-brain/src/ffi.rs:348-351` (Rust dispatches `1 => DELL, _ => Simple`). `Backend.learned` makes a DELL core. `LearnedLatentUpdater` is unreachable from iOS.
3. EchelonBridge slot index mismatch. Source: `EchelonBridge.swift:397-404` (`getTemporalState` reads `[69, 70, 71]` as `(tempo, confidence, phase)` but Rust writes `(tempo, phase, periodicity)` per `san/mod.rs:85-87`).

Plus one architectural module (`TemporalIntegrator`) and one supporting module (`PocketFFT`) are needed to give the system a single source of truth for body-time.

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Acceptance criteria — verification status

Live test BLOCKED on actual code execution which is OUT of scope for this collapsed run — patches are ready to apply but not applied. See "Promotion criteria" below.

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Artifact pointers (all absolute paths)

### Crucible (planning)
- `[home]/Desktop/crucible-output/echelon-l4/01-excavation.md` — Stage 1 grounding context (verified bug list)
- `[home]/Desktop/crucible-output/echelon-l4/02-evolution/stage0-research.md` — research grounded by Stage 1
- `[home]/Desktop/crucible-output/echelon-l4/02-evolution/stage1-paths.md` — 6 divergent paths
- `[home]/Desktop/crucible-output/echelon-l4/02-evolution/stage2-compound.md` — compound synthesis (8 steps)
- `[home]/Desktop/crucible-output/echelon-l4/02-evolution/stage3-master-plan.md` — wave-based master plan
- `[home]/Desktop/crucible-output/echelon-l4/03-architecture.md` — Forge technical architecture (5 changes + slot fix)
- `[home]/Desktop/crucible-output/echelon-l4/04-execution-plan.md` — EW-governed rail (6 phases × 18 tasks)
- `[home]/Desktop/crucible-output/echelon-l4/05-synthesis.md` — top-line synthesis

### META:OMEGA (review + patches)
- `[home]/Desktop/omega-output/echelon-l4-20260508/03-review.md` — 8-lens review (0 CRITICAL after R-2 resolution baked into Phase 3 patch design)
- `[home]/Desktop/omega-output/echelon-l4-20260508/patches/phase-1/` — 2 patches: Rust updater-kind log + Swift 128D slot dump
- `[home]/Desktop/omega-output/echelon-l4-20260508/patches/phase-2/` — 5 patches: state.phase fix, TemporalIntegrator module, 3 FFI functions, PocketFFT module, Swift slot-order fix
- `[home]/Desktop/omega-output/echelon-l4-20260508/patches/phase-3/` — 3 patches: Backend enum fix, simple-default cargo feature, default-path swap

### Source files affected (no edits applied — read-only)
- `[home]/Desktop/Comp-Core/core/audio-media/cc-echelon/crates/cc-brain/src/lib.rs`
- `[home]/Desktop/Comp-Core/core/audio-media/cc-echelon/crates/cc-brain/src/ffi.rs`
- `[home]/Desktop/Comp-Core/core/audio-media/cc-echelon/crates/cc-brain/src/latent/simple.rs`
- `[home]/Desktop/Comp-Core/core/audio-media/cc-echelon/crates/cc-brain/src/temporal_integrator.rs` (NEW per patch)
- `[home]/Desktop/Comp-Core/core/audio-media/cc-echelon/crates/cc-brain/src/pocket_fft.rs` (NEW per patch)
- `[home]/Desktop/Comp-Core/core/audio-media/cc-echelon/crates/cc-brain/Cargo.toml`
- `[home]/Desktop/MotionMixApp/MotionMixApp/Services/EchelonBridge.swift`

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Honest gap statement

This chain produced VALIDATED PLANS + READY-TO-APPLY PATCHES, not a fully shipped + verified live system.

What IS done:
- Three identified bugs traced to file:line on disk
- Architecture validated against the 8-lens review (Feasibility, Coherence, Risk, Dependency, Novelty, Executability, Entanglement, Paradox Fuel)
- 10 patches written in unified-diff format, all syntactically valid (Rust + Swift)
- Each patch includes a test snippet
- The CRITICAL R-2 risk (default-path swap with no rollback) is resolved by the Phase 3 patch design — Result-based fallback at the FFI level, plus the `simple-default` cargo feature flag

What is NOT done:
- Patches are NOT applied to Mac4 source trees
- `cargo test` has NOT been run with the patches in place
- `libechelon_ios.a` has NOT been rebuilt
- No Xcode build, no device deploy, no live test
- No mp4 proof of "body slow → music slows"

Live verification requires Codex / Mohamed to apply patches on Mac4 + run the live test on iPhone 16.

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Promotion criteria — Chain 2 trigger

Chain 2 (Sky Garden Duncan-parity push) STARTS when ALL of the following hold:

1. All 10 patches applied to `Desktop/Comp-Core/` and `Desktop/MotionMixApp/`
2. `cargo test -p cc-brain --lib` passes (must include the new tests from each patch)
3. `cargo build -p echelon-ios --target aarch64-apple-ios --release` succeeds
4. `libechelon_ios.a` copied to `Desktop/MotionMixApp/Frameworks/`
5. `xcodebuild build -workspace MotionMixApp.xcworkspace -scheme MotionMixApp -destination 'generic/platform=iOS'` passes
6. App deployed to iPhone 16 Plus (device id `880B4058-F0B8-59EC-8693-7750C90BDB62`)
7. Live test recorded as mp4 at `Desktop/crucible-output/echelon-l4/proof-2026-05-08.mp4` (or later date) showing:
- HUD displays `source=CoreML` (or `source=Rules` if Hub off)
- HUD displays slots [69:73] populated (tempo, phase, periodicity, grounding non-zero)
- Dancer slows by ~20
- No audio pop / click during transition

The release-2 trigger lives at `[home-path]` and is a no-op until criteria 1-7 are all green.

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Rollback recipe

If the patches regress production audio after live deploy:

1. Instant rollback (no rebuild): flip `EchelonBridge.swift` `temporalSlotEnabled = false` (the feature gate at the iOS bridge level — already present in the synthesized plan, not in these patches because the patches focus on Rust correctness; the iOS gate is a separate Phase 5 add).
2. Source-level rollback: rebuild iOS static lib with `cargo build -p echelon-ios --features simple-default --release`. This routes `echelon_create_default()` through `SimpleLatentUpdater` exactly as today.
3. Full revert: `git revert` the 10 patch commits. Each patch is independently revertible because each is its own commit (no inter-patch fixups).

The Backend enum fix (Phase 3 patch 01) is the only path that has no rollback flag — but it is also LATENT (no production call site uses `Backend.learned` today, per Excavation §6 OQ7), so reverting it cannot regress shipping behavior.

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Sign-off

Chain 1 release artifact written by Claude Opus 4.7 (1M context) at `2026-05-08`. The release flag at `[home-path]` is set on the same date.

Chain 2 (Sky Garden Duncan-parity push) is staged at `[home-path]` for next `/chain:full-omega` invocation.