Real ShardRuntimeServicer process bound to a real localhost socket, driven
by a generated ShardRuntimeStub over grpc.insecure_channel from a separately
spawned subprocess. Proves direct-hop and opaque-relay (exact captured
request bytes re-sent, no reinterpretation) produce byte-identical server
responses, cross-checked against an independent server-side wire capture.
Fails closed on the required negative paths: stale route epoch, expired
deadline, malformed/non-tiling fragments, checksum failure, exhausted
flow-control credit (with in-band top-up), duplicate idempotency steps
(acked, not re-applied), and cancel — both in-band CancelSignal (single
work item vs whole session) and the out-of-band unary Cancel RPC, including
a Cancel that races ahead of SessionOpen.
Supersedes the earlier in-memory fake-seam approach for this ticket, which
a policy audit rejected under the no-fake-data rule; that code is not
reintroduced. Evidence README rewritten to describe the actual files.
11 passed in tests/test_shard_runtime_harness.py.
Derive the recipe's runtime_version axis from the DGR-027 lock manifest
(exact upstream commit + ordered patch-stack byte digest) in new
meshnet_node.runtime_pin, failing closed on any lock/series/SHA256SUMS/
patch disagreement, and enforce pin discipline on runtime_version in both
the node and tracker identity implementations.
Also repair pre-existing backlog consistency: add missing DGR-022/DGR-027
completionNotes, regenerate the DGR-022/025/027 issue projections, and
relocate three pre-DGR legacy GLM issue files to issues/legacy/. Mark
DGR-025 passes=true with evidence at evidence/DGR-025/README.md.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
