feat: harden node placement and partial model loading

.claude/memory/MEMORY.md

@@ -2,9 +2,9 @@
 
 - [Product selling points](product-selling-points.md) — key differentiators and landing page angles for neuron-tai
 - [User profile](user-profile.md) — who Dobromir is and how to work with him
-- [Project status](project-status.md) — 35/35 stories done; alpha hardening next
+- [Project status](project-status.md) — US-001…US-035 done; US-036…US-050 in docs/prd.json; alpha hardening + scratch features next
 - **Alpha hardening** — `.scratch/alpha-hardening/` (22 issues, ADRs 0016–0019, [README](../../.scratch/alpha-hardening/README.md), [handoff](../../.scratch/alpha-hardening/handoff.md))
 - [Alpha hardening navigation](alpha-hardening-navigation.md) — locked fraud/auth decisions, Bucket-1 order, handoff pointers
-- **Node capability admission** — `.scratch/node-capability-admission/` (P0 plan: generic doctor/real-forward validation, fail-closed readiness, tracker admission gate; [PRD](../../.scratch/node-capability-admission/PRD.md), [README](../../.scratch/node-capability-admission/README.md), ADR-0023)
+- **Node capability admission** — `.scratch/node-capability-admission/` (P0 plan; [ADR-0023](../../docs/adr/0023-model-agnostic-node-capability-admission.md), [ADR-0026](../../docs/adr/0026-node-assignment-ownership-and-managed-placement.md))
 - **Distributed relay performance** — relay `/rpc` requester sockets are persistent per Route Session and Activation Seam as of 2026-07-10; `request_id` remains unique per activation while `X-Meshnet-Session` remains stable for KV state. Next low-risk priorities: persistent direct/loopback HTTP, seam byte/latency telemetry, then trace-driven zstd tuning.
 - **Distributed GGUF direction** — benchmark-gated native runtime: compare controlled Transformers/safetensors and whole-model llama.cpp lanes before expensive work; ship only for measured speed or model-fit advantage. Public parallelism is contiguous Shards in an Inference Route; concurrency comes from per-node continuous batching across isolated Route Sessions, while tensor/expert collectives stay inside optional trusted composite providers. Native data plane uses versioned Protobuf over long-lived gRPC/HTTP2 seam streams, with existing relay carrying the same opaque frames when needed. llama.cpp/GGML remains the substrate behind a project-owned standalone worker and small pinned fork; vLLM is an optional complete managed provider and concept donor, not a fork. Nakshatra, `prima.cpp`, `llama-gguf`, LiGGUF and historical GPUStack are source/test donors only. Active plan: [README](../../.scratch/distributed-gguf-runtime/README.md), [architecture](../../.scratch/distributed-gguf-runtime/architecture.md), [PRD](../../.scratch/distributed-gguf-runtime/PRD.md), [Ralph backlog](../../.scratch/distributed-gguf-runtime/prd.json). ADR: [0024](../../docs/adr/0024-distributed-gguf-runtime.md). Research: [landscape](../../docs/research/distributed-gguf-landscape.md), [GitHub follow-up](../../docs/research/distributed-gguf-github-followup.md), [vLLM](../../docs/research/vllm-distributed-gguf-assessment.md).

.claude/memory/project-status.md

@@ -8,7 +8,7 @@ metadata:
 
 # Project Status (2026-07-13)
 
-> Doc reconciliation 2026-07-13: `docs/PRD.md`, ADR numbering (0024 = distributed GGUF), and `docs/issues/` statuses updated to match `docs/prd.json` (US-001…US-035 done). **US-036…US-047** added to `docs/prd.json` for the friends-test / LAN-serving arc. Post-035 scratch work remains in `.scratch/`.
+> Doc reconciliation 2026-07-13: `docs/prd.json` tracks US-001…US-050 (048 memory budget, 049 mainnet pilot, 050 Qwen demand placement). ADRs 0025–0026 added (TAI phase B/C, assignment ownership).
 
 All 35 user stories in docs/prd.json are done (35/35), including the reward-system arc US-030…US-035 completed 2026-07-02: