[merynz]

Component edits previously depended on historical ledgers and branch/artifact discovery. The Go operator path now attaches target execution to a research Attempt, reuses exact qualified upstream artifacts and materializes verified CAS stage outputs before Python consumes them.

• Separate research target execution, PRODUCT compile and qualified ProductRevision render commands/API. Research completion never creates product authority; demo-only qualifications cannot enter the product cache.
• Seal immutable per-release DAG snapshots and Compiler plan identity. Added/removed/rewired research nodes affect their consumer closure; unrelated nodes retain artifact identities. Execution, dependency binding and repair attribution use the Attempt's released graph.
• Pin implementation, policy, manifest read-set and graph-node identities. Python rejects drift before execution/hydration. Periodic heartbeats cover long Engine activities.
• Export source-only release requests; keep continuation on main through short PRs. Agent/contribution instructions require the Platform path and inspectable reuse/execute scope.
• Reconcile current main and AXIS V5.4.1/MIRA V5.5 result hashes. Preserve teacher-relative Knight FIT1 PASS and the separate absolute G3 gap.
• Simplify current entry documents, catalog 110 dated narratives, remove duplicate restoration text while retaining its exact archived bytes, and verify 170 local links. Referenced sealed evidence stays at its original path.
• Use only self-hosted workflows, make frozen vendor/R6/recovery replays manual, cancel superseded PR heads, retain local Go caches, and isolate destructive migration rollback proof from expanded DAG fixture records.

Validation:

• Local: Go unit contracts/vet; 19 Python hydration/continuity/runner tests; 61 repository/DAG/governance tests; 70 model/IRIS ownership tests; 482 Compiler tests passed (10 skipped: native player/optional skimage unavailable).
• Self-hosted platform-go-contract-v1: SUCCESS on exact head 79dafbc39193089b50d1fa029cd8d63c6d68f8fd; all Go/PostgreSQL contracts, migration up/reset/up, graph immutability/evolution, binary builds and Python Engine hydration checks.
• Self-hosted native runtime source/ABI gate and motion extraction gate also passed on this head. The aggregate mainline workflow remains queued; local governance/model/Compiler checks above passed on this exact checkout.

Scope: engineering execution structure. No new Knight inference/render, universal G3 PASS, unseen/generalization claim, full pretrained input-to-output service or two-minute latency proof. Legacy artifacts/releases need explicit verified import/reseal; recursively portable payload references and product UI are later work.

Operator contract: docs/platform/EXECUTION_LANES.md.

Merged main verification: 168a563c398ab6f4dc5124438164193adecaadf2, tree 7834b76c65570e34a67bef6a37ef6fe0ac2838e0. Live main ref verified; merge tree equals reviewed head tree exactly. Post-merge push CI status is separate from the completed review-head validation above.