story: DGR-043 Expose GGUF compatibility and measured cost inputs to existing routing

.scratch/distributed-gguf-runtime/evidence/DGR-043/README.md

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+# DGR-043 evidence — GGUF inputs through existing tracker routing
+
+**Date:** 2026-08-01  
+**Authority:** `.scratch/distributed-gguf-runtime/prd.json` (`passes` remains
+`false`; this is model-free integration evidence, not a hardware certification).
+
+## Implemented
+
+- Added optional backend-neutral `RoutingMeasurements` to the existing capability report. It carries measured tokens/second, queue depth, seam latency, health, and reliability; reports that omit it retain their exact previous serialized shape.
+- Extended the tracker’s existing sanitized `CapabilityState` and network-map capability view to retain the routing measurements with exact recipe, artifact/runtime fingerprint, half-open-range-derived coverage, capacity, backend, and certification facts.
+- `NativeShardRegistration` now accepts this generic measurement block and adapts throughput and queue depth to the existing registration/heartbeat scoring inputs. The tracker continues to apply its established queue-adjusted throughput selection; no GGUF routing, balancing, billing, relay, provider, quantization, topology, or architecture branch was added.
+- Added deterministic coverage tests showing that existing route formation excludes a dark candidate, forms a complete route only from matching exact fingerprints, and rejects a range otherwise covered only by a mismatched recipe.
+
+## Changed files
+
+- `packages/node/meshnet_node/capability.py`
+- `packages/node/meshnet_node/native_registration.py`
+- `packages/tracker/meshnet_tracker/capability.py`
+- `packages/tracker/meshnet_tracker/server.py`
+- `tests/test_native_registration.py`
+- `.scratch/distributed-gguf-runtime/evidence/DGR-043/README.md`
+- `.ralph-tui/progress.md`
+
+## Commands and results
+
+```bash
+PYTHONPATH=packages/node:packages/tracker /home/popov/.hermes/hermes-agent/venv/bin/python -m pytest -q \
+  tests/test_native_registration.py tests/test_node_capability.py \
+  tests/test_runtime_recipe_identity.py
+```
+```text
+96 passed in 0.23s
+```
+
+```bash
+PYTHONPATH=packages/node:packages/tracker /home/popov/.hermes/hermes-agent/venv/bin/python -m pytest -q \
+  tests/test_dgr_performance_contract.py tests/test_native_activation_seam.py \
+  tests/test_native_worker_supervisor.py tests/test_native_registration.py \
+  tests/test_ralph_prd_schema.py
+```
+```text
+151 passed in 1.78s
+```
+
+```bash
+/home/popov/.hermes/hermes-agent/venv/bin/python -m ruff check \
+  packages/node/meshnet_node/capability.py \
+  packages/node/meshnet_node/native_registration.py \
+  packages/tracker/meshnet_tracker/capability.py \
+  packages/tracker/meshnet_tracker/server.py tests/test_native_registration.py
+python3 -m compileall -q packages tests
+git diff --check
+```
+```text
+All checks passed; both remaining commands exited 0.
+```
+
+Default tests were model-download-free, API-credit-free, and GPU-free. No native source, protobuf, patch, model artifact, or mounted-drive content was changed; therefore native CMake/CTest, patch-stack, and real-hardware gates do not apply to this Python-only adapter.
+
+## Limitations
+
+- The full HTTP tracker/admission and tracker-routing suites cannot bind an AF_INET listener in this sandbox. The attempted focused suite had 132 passes and 14 failures, all `PermissionError: [Errno 1] Operation not permitted` during socket creation. Model-free direct tracker parsing and route-formation tests cover this change; HTTP/billing/relay regression suites must be rerun in an environment that permits localhost sockets.
+- Measurements are inputs, not self-certification. An exact native recipe remains `dark` until the existing tracker-owned certification ledger admits it, and worker health loss continues to withdraw the native capability.
+- Seam latency is retained as a measured tracker capability input. Existing route latency learning remains the tracker-owned mechanism for end-to-end seam cost; this story intentionally does not alter its scoring algorithm.
+
+## Dependency handoff
+
+- **DGR-041:** `NativeShardRegistration`, `ExecutionCapacity`, exact `ShardIdentity`, and the tracker certification ledger remain the only registration/admission path. Supply `RoutingMeasurements` from verified worker/telemetry observations; do not infer values from backend names, quantization labels, architecture, or stage topology.
+- **DGR-053/DGR-061:** use the exposed opaque measurements and existing tracker routing mechanisms for real certified routes. Any real-run evidence must add artifact/split hashes, worker/upstream pins, backend/driver, hardware/network details, commands, and raw metrics.