V39 Gate 7: Settlement rights delivery boundary

Implement the AssetPack paid-boundary receipt that observes BTC payment/finality, composes source-to-shares compensation, BTD rights transfer/read receipts, settlement unlock readback, ledger/database/object-storage reconciliation, delivery unlock, replay, and repair posture. Wire the boundary through AssetPack preprocess/postprocess storage projection and export the required BTD subpaths.

Add the V39 Gate 7 protocol artifact, generator, checker, workflow coverage, package tests, and specification/roadmap documentation. Refresh the Gate 6 preview artifact predicate now that the roadmap has advanced to Gate 7.

Author: geraldarthurdavis

.bitcode/v39-assetpack-preview-quote-boundary.json

@@ -452,7 +452,7 @@
       "passed": true
     },
     {
-      "id": "roadmap-advanced-to-gate6",
+      "id": "roadmap-advanced-through-gate6",
       "sourcePath": "SPECIFICATIONS_ROADMAP.md",
       "passed": true
     },
@@ -526,5 +526,5 @@
     "failedPredicateIds": []
   },
   "passed": true,
-  "artifactRoot": "v39-assetpack-preview-quote-boundary:829c3a49a4712c57e921c42b"
+  "artifactRoot": "v39-assetpack-preview-quote-boundary:cdf085fde491e2540e9edb50"
 }