feat: ADR-087 RuVix Cognition Kernel

[ruvnet]

Summary

• ADR-087: Foundational architecture for RuVix — a cognition kernel for the Agentic Age
• 986-line ADR defining the complete kernel architecture with 6 primitives, 12 syscalls, and RVF as native boot object

Core Design

Primitive	Purpose
Task	Concurrent execution with capability set
Capability	Unforgeable typed access token (seL4-inspired)
Region	Memory with policy (immutable/append-only/slab)
Queue	io_uring-style ring buffer IPC
Timer	Deadline-driven scheduling
Proof	Cryptographic attestation gating state mutation

Key Decisions

• RVF is the boot object — packages are complete cognitive units
• RuVector is kernel-resident — vectors/graphs are native kernel resources
• Proof-gated mutation is a kernel invariant — no proof, no mutation
• Coherence-aware scheduler — priorities based on deadline + novelty + structural risk
• No POSIX — WIT/RVF contracts replace POSIX interfaces
• 12 syscalls total — hard architectural constraint

Build Path

• Phase A (days 1-60): Linux-hosted nucleus, 9 crates, freeze ABI
• Phase B (days 60-120): Bare metal AArch64 (RPi 4/5, QEMU)
• No Phase C (no POSIX compat)

8 Demo Applications

Practical: proof-gated vector journal, edge ML inference, drone swarm coordinator, self-healing knowledge graph
Exotic: collective intelligence mesh, quantum-coherent memory replay, biological signal processor, adversarial reasoning arena

Test plan

• ADR follows project conventions (numbered, status/date/deciders/related)
• References 10 existing ADRs and 12 existing crates
• Acceptance test formally specified (Section 17)
• Peer review of kernel design decisions

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