<!-- GENERATED FROM prd.json — DO NOT EDIT AS AN INDEPENDENT SOURCE. prd.json IS AUTHORITATIVE. -->
# DGR-068: Package reproducible native worker releases

- **Status / triage:** specification only; `ready-for-agent`; `passes: false`
- **Execution mode:** `AFK`
- **Milestone:** `M5`
- **Dependencies:** `DGR-030`, `DGR-054`, `DGR-067`
- **Blocks (derived):** `DGR-070`
- **Labels:** `area:packaging`, `area:release`, `type:delivery`, `priority:p1`, `ready-for-agent`
- **Evidence class:** `release`
- **Hardware:** `optional`
- **Model:** `generic`
- **Upstream:** `yes`

## Objective / description

Fresh Ralph session: read `.scratch/distributed-gguf-runtime/RALPH-CONTEXT.md`, source issue `.scratch/distributed-gguf-runtime/issues/068-package-reproducible-native-worker-releases.md`, and evidence READMEs for dependencies (DGR-030, DGR-054, DGR-067) before changing code. Inspect live source/tests rather than trusting legacy pass states. Objective: Produce installable worker packages that preserve exact source, patch, protocol, and certification identity.

## Acceptance criteria

- [ ] Package worker binaries/configuration for supported host/backend combinations without bundling an unverified llama.cpp tree.
- [ ] Embed protocol, engine, upstream pin, patch-stack, build-toolchain, and certification fingerprints.
- [ ] Installation/startup refuses mismatched artifacts, runtime recipes, or unsupported hardware lanes.
- [ ] Produce checksums, SBOM/license attribution, reproducible build instructions, and smoke tests.
- [ ] 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-068/README.md`. Until every criterion and applicable gate has real evidence, this story remains `passes: false`. Legacy evidence is provenance only, not completion credit.
