Freeze byte-identical independent routing inputs and review

harness/experiments/routing-independent-20260925/.gitattributes

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+* -text

harness/experiments/routing-independent-20260925/corpus/manifest.json

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+{
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+          "target": "00000000-0000-0000-0000-000000018704"
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+          "target": "00000000-0000-0000-0000-000000030db0"
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+  ],
+  "construction": "Source-authored positions/topology, no Layout/projection/routing calls; validate all before writing.",
+  "definition_baseline": "f72aa2ca",
+  "generation_in_routing_timing": false,
+  "invariants": "Routing is read-only. Preserve all semantic records, port identities, fixed anchors, authored routes/labels, fold flags, and other views. ID permutation correspondence is explicit. No quality or automatic endpoint-side expectation.",
+  "schema": 1
+}

harness/experiments/routing-independent-20260925/generation.json

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+{
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+  "repeated_generation_byte_identical": true,
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+}