d1e75ddded
Move issues (01–29) and PRD from .scratch/distributed-inference-network/ into docs/issues/ and docs/. Update ralph_progress.py DEFAULT_PRD path and rewrite docs/agents/issue-tracker.md to reflect the new layout. The distributed_inference_network.egg-info/docs/ mirror is a build artifact already covered by *.egg-info/ in .gitignore — not committed. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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US-028 — Routing correctness tests: three-node, overlap, and throughput scenarios
Status: done Priority: Medium Stage: Implemented
Context
Route selection logic (_select_route) is the core of the inference network. Without
locked-down tests, routing regressions are silent. This story adds a comprehensive
scenario suite that locks in the routing contract.
Test scenarios
- No-overlap three nodes: greedy picks in layer-start order (A→C→B for ranges 0–7, 8–15, 16–23) Note: the algorithm picks by earliest uncovered layer, not by node label — so if C.shard_start < B.shard_start, C comes first.
- Overlapping shards: correct resolution without double-computing layers
- Throughput tiebreak: faster node wins when shard_end is equal
- Gap detection: partial coverage returns a 503 error with description
Acceptance criteria
- 7 routing tests covering the above scenarios
- Tests use in-process tracker (no mocking)
_make_nodehelper for concise test setup- All tests pass;
python -m pytestpasses