plan(causaledge64-mailbox-rename-soa-v1): composition spec + 10 epiphanies + board PREPENDs

[AdaWorldAPI]

Summary

Composition spec for the CausalEdge64-mailbox-rename-SoA substrate. No code changes — this PR is plan + board hygiene only, per CLAUDE.md Mandatory Board-Hygiene Rule (new integration plan → INTEGRATION_PLANS.md PREPEND + .claude/plans/<name>-v<N>.md + EPIPHANIES.md PREPEND).

What this composes

Five already-authored plans + Σ10 Rubicon doctrine + one genuine ndarray-side gap (crates/par-tile/) into a single substrate:

• CausalEdge64 v2 layout — in-place reclaim of 13 reserved bits for (G:5, W:6, truth:2). No type bump; PAL8 + NarsTables LUT preserved by explicit regression tests.
• AttentionMask SoA — session-ephemeral CPU-shaped rename register file (32-slot G ↔ u32 OGIT domain, 64-slot W ↔ witness palette, 256-slot style ↔ {12 | 34 | 144} alphabets, 4-level truth). LRU eviction + broadcast notifications.
• MailboxSoA — compartment topology as SoA rows (NOT spawned actors). ~1.5 KB per compartment via shared Arc<BindSpace> + tiny delta-buffer + outbound CausalEdge64 channel + Option<ConsumerHandle> external-intent gate. Supports ~24K parallel thoughts at 200ns cycle speed across ≤32 active OGIT domains.
• Truth-band lens collapse — TrustTexture / Wisdom / Staunen / MUL GateDecision are four consumer-lens projections of the same 2-bit physical field. Closes 4 type duplications.
• gRPC service shape IS the ractor message protocol — crates/cognitive-shader-driver/src/grpc.rs Dispatch(DispatchRequest) -> CrystalResponse reused across 4 transport backings (InMemory cycle-speed / Tokio Zone-2 / SupabaseSub Zone-3 / gRPC Zone-3-lab).
• Σ10 Rubicon SigmaTierRouter — wires the named-but-unwired Σ1-Σ10 tier doctrine (linguistic-epiphanies-2026-04-19.md E21) to runtime mailbox-backing dispatch. Σ1-Σ5 STATIC → Tokio; Σ6-Σ8 EMERGENT/TWIG → InMemoryMailbox cycle-speed; Σ9-Σ10 EPIPHANY → escalate to L4 planner.
• Vsa16kF32 retreats from universal-carrier to single-cycle Markov-bundle. Cumulative state moves to AriGraph SPO-G quads + Christmas-tree ghost-edge decoration.
• Ownership-typed UB-impossibility — borrow checker rejects cross-compartment BindSpace aliasing; race conditions at 200ns cycle speed become compile errors.

7-PR sequencing (this PR is plan only; the 7 implementation PRs follow)

#	Scope	LOC	Risk
PR-CE64-MB-1	crates/par-tile/ apex (new crate)	~1500	Low
PR-CE64-MB-2	CausalEdge64 v2 layout + PAL8/NarsTables regression	~400	Med (binary compat critical)
PR-CE64-MB-3	BindSpace Columns E/F/G/H per bindspace-columns-v1 Phase 2	~800	Med (SoA layout change)
PR-CE64-MB-4	SPO-G quad mode + ghost-edge persistence in AriGraph	~600	Med
PR-CE64-MB-5	MailboxSoA + AttentionMaskActor wiring	~1200	Med
PR-CE64-MB-6	SigmaTierRouter + InMemoryMailbox backing	~1500	High (new dispatcher)
PR-CE64-MB-7	Bevy NdarrayCullPlugin proof plugin	~500 (bevy side)	Low

PR-2/3/4 can land in parallel after PR-1. PR-5 depends on all three. PR-6 depends on PR-5. PR-7 is the proof step.

Closes / unblocks

• PR feat(palantir-cascade): 11 deliverables across 12 agents in 3 waves (Pillar 0 realized) #355 deferred Tier B: FIX-4 (codebook_index bit-collision via 256² PaletteSemiring binning), FIX-5 (trust_below_floor wiring test via Column H), per-row BindSpace.context_ids for driver.rs:311 (Column H = TypeColumn: EntityTypeId u16)
• THINKING_ORCHESTRATION_WIRING.md Gap 1 (Contract Not Consumed — 12 vs 36 ThinkingStyle) via 8-bit-slot rename collapse
• THINKING_ORCHESTRATION_WIRING.md Gap 3 (JIT pipeline never executed end-to-end) — compartment-spawn consumes KernelHandle
• THINKING_ORCHESTRATION_WIRING.md Gap 4 (Elevation not connected) — SigmaTierRouter IS the runtime elevation policy
• TD-INT4-32D-ATOMS-6 — cold-start K-NN fallback via OQ-4 path
• TD-THINKING-ENGINE-UNWIRED-1 — BindSpaceView references resolve thinking-engine encode/decode + lens stack on demand
• Type-duplication debt (4 TrustTexture, 4 ThinkingStyle copies) via lens-collapse + rename

Blast radius (§10 of the spec)

• 5 crates affected: par-tile NEW + causal-edge / cognitive-shader-driver / lance-graph-supervisor / lance-graph::arigraph extensions
• Zone 3 surface UNCHANGED — postgrest / drain / grpc / supabase-realtime endpoints untouched
• lance-graph-callcenter Zone-2 surface unchanged except CallcenterSupervisor (already shipped impl(sprint-7): 7-worker implementation wave for sprint-5/6 specs + AuditSink trait unification #366 S7-W3) gains SigmaTierRouter sub-actor
• Supabase realtime transcode logic complemented, not retired — the transcode reads Lance commits the same way it always has; ractor populates AriGraph SPO-G quads + Lance row inserts, transcode reads downstream

Iron rule compliance

Rule	Compliance
I-SUBSTRATE-MARKOV	Preserved + strengthened (Vsa16kF32 retreat removes content-bundling temptation)
I-NOISE-FLOOR-JIRAK	Explicit σ-threshold OQ at sign-off
I-VSA-IDENTITIES	Strengthened (universal-carrier role retires; identities-only discipline now strict)
I1 (BindSpace read-only; CollapseGate bundles)	Preserved — single mutation point
Method-on-carrier discipline	Preserved — no new free functions
AGI-as-glove SoA invariant	Preserved — Topic/Angle reads, Thinking/Planner writes via existing column conventions

Open design questions (§11 — 8 OQs)

OQ-1 Σ-tier banding policy · OQ-2 ghost-edge decay vs fixed-rung · OQ-3 plasticity granularity · OQ-4 INT4-32D cold-start wiring path · OQ-5 rayon vendor decision · OQ-6 Vsa16kF32 final residence · OQ-7 AwarenessColumn sizing · OQ-8 SpoWitness shape variants. Ratify before sprint worker fan-out (per §15 readiness checklist).

Files changed

• NEW: .claude/plans/causaledge64-mailbox-rename-soa-v1.md (~600 lines, 15 sections, comprehensive composition spec)
• PREPEND: .claude/board/INTEGRATION_PLANS.md (plan index entry with 9 D-ids + 7-PR sequencing + composes/closes + iron-rule audit)
• PREPEND: .claude/board/EPIPHANIES.md (10 epiphanies E-CE64-MB-1 through E-CE64-MB-10)

3 files changed, +685 lines. Zero code changes — pure plan + board hygiene.

Test plan

• Plan doc renders cleanly (markdown)
• INTEGRATION_PLANS.md PREPEND format matches existing entries (append-only governance preserved)
• EPIPHANIES.md PREPEND format matches existing entries
• No code in this PR — nothing to compile or test
• Reviewer ratifies §11 OQ-1 through OQ-8 before sprint-10 worker fan-out
• Reviewer confirms §10 blast radius accurately preserves Supabase realtime transcode surface

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Status: Active (draft, pre-execution). Sprint worker fan-out follows OQ ratification. Per CLAUDE.md Model Policy, sprint workers Sonnet + Opus meta per CCA2A 12-worker pattern.

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Generated by Claude Code