<!-- GENERATED FROM prd.json — DO NOT EDIT AS AN INDEPENDENT SOURCE. prd.json IS AUTHORITATIVE. -->
# DGR-044: Pin the DeepSeek V4 Flash target contract

- **Status / triage:** specification only; `ready-for-agent`; `passes: false`
- **Execution mode:** `AFK`
- **Milestone:** `M3`
- **Dependencies:** `DGR-019`, `DGR-025`, `DGR-026`, `DGR-027`
- **Blocks (derived):** `DGR-045`
- **Labels:** `area:deepseek-v4`, `area:provenance`, `type:contract`, `priority:p0`, `ready-for-agent`
- **Evidence class:** `model-free`
- **Hardware:** `none`
- **Model:** `deepseek-v4-flash`
- **Upstream:** `yes`

## Objective / description

Fresh Ralph session: read `.scratch/distributed-gguf-runtime/RALPH-CONTEXT.md`, source issue `.scratch/distributed-gguf-runtime/issues/044-pin-the-deepseek-v4-flash-target-contract.md`, and evidence READMEs for dependencies (DGR-019, DGR-025, DGR-026, DGR-027) before changing code. Inspect live source/tests rather than trusting legacy pass states. Objective: Fix the alpha/beta model identity and upstream maturity assumptions before implementing the adapter.

## Acceptance criteria

- [ ] Pin Hugging Face target SHA `60d8d70770c6776ff598c94bb586a859a38244f1`.
- [ ] Record the selected GGUF provenance and exact source binding without assuming one quant.
- [ ] Record that llama.cpp support began with PR 24162/commit `8c146a8` and remains maturing; the build manifest still pins one exact validated upstream commit.
- [ ] Record 43 main layers plus MTP and all known architecture-specific state obligations.
- [ ] Applicable shared quality gates in `prd.json` pass, and the evidence handoff records exact commands/results, changed files, limitations, and dependency handoff.

## Shared quality gates

- Targeted deterministic tests pass; Python changes also pass `python -m compileall packages tests`.
- `git diff --check` passes.
- Default tests are model-download-free, API-credit-free, and GPU-free.
- Evidence README records exact changed files, commands/results, limitations, and dependency handoff; no fabricated evidence or inherited completion credit.
- Native changes pass focused out-of-tree CMake build and CTest; patch changes verify clean apply/check/reverse against the exact llama.cpp pin.
- Runs are opt-in and record exact artifact/split hashes, runtime/upstream pin, backend/driver, hardware, network, commands, and raw metrics. Model artifacts use configured mounted-drive storage and never `/home`.
- Preserve existing Transformers behavior and backend-agnostic Tracker routing/load balancing/billing/relay semantics unless an explicit versioned contract says otherwise. One scoped story commit is expected during execution, but this specification-materialization change is not committed.

## Evidence handoff

Write and verify `.scratch/distributed-gguf-runtime/evidence/DGR-044/README.md`. Until every criterion and applicable gate has real evidence, this story remains `passes: false`. Legacy evidence is provenance only, not completion credit.
