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Deeper Access Execution Plan: FoxyLink Primary Track (UT Blocked)

Goal

Close the only failed hard gate segment:

  • posting -> subconto[1..3] -> counterparty/contract/item (missing reproducible slot 3 proof)

without replacing the working OData read-only contour.

Architecture Direction

  1. Keep OData as the base read-only contour for broad extraction and low-cost discovery.
  2. Treat Universal Tools quick-probe branch as blocked for current БП 2.0 lab contour (compatibility mismatch).
  3. Run FoxyLink PoC as the main deeper-access candidate for stable retrieval of missing semantic links/aggregates.
  4. Keep canonical layer as the only external contract (API/MCP sees one model, regardless of source mix).
  5. UT may be revisited only as a separate adaptation project.

Phase Plan

Phase 1: Compatibility Gate (UT) - Closed as Blocked

  1. UI.cfe installation attempt in lab copy failed.
  2. Missing required BSP/configuration objects confirmed.
  3. Branch status fixed as blocked.

Artifact:

  • docs/ut_compatibility_blocker_2026-03-22.md

Phase 2: FoxyLink PoC (Primary)

  1. Deploy FoxyLink in isolated test contour.
  2. Implement minimal extraction job for failed segment only (slot 3 closure).
  3. Map result into existing canonical schema (no schema fork).
  4. Run side-by-side with OData flow on the same sample period.

Exit criteria:

  • Hard check #2 passes from reproducible FoxyLink-backed evidence.
  • No regressions in checks #1 and #3.

Phase 3: Integration Decision

  1. If PoC passes, promote FoxyLink as primary deeper-access contour.
  2. Keep OData as wide read-only baseline.
  3. Keep Universal Tools out of critical path unless separate adaptation is approved.

Exit criteria:

  • scripts/deep_probe_accounting_mvp_gate.py => all checks pass
  • Final verdict in logs/deep_accounting_mvp_gate.json => OData sufficient for MVP accounting ontology

Required Controls

  1. Test-only installation for diagnostic/deeper-access tools.
  2. Read-only policy remains mandatory for OData contour.
  3. Role-level permission audit before production promotion.
  4. License/legal review before rollout (FoxyLink AGPL, Universal Tools GPL-3.0).
  5. Explicit record of UT incompatibility in the decision package.

Deliverables

  1. Updated gate artifact: logs/deep_accounting_mvp_gate.json
  2. Updated decision report: docs/decision_report_odata_vs_deeper_access.md
  3. Added evidence package for slot 3 closure (query + sample + mapping)
  4. Readiness snapshot: logs/deeper_access_readiness.json
  5. Test contour checklist: docs/test_contour_runbook_foxylink_ut_2026-03-22.md
  6. UT blocker note: docs/ut_compatibility_blocker_2026-03-22.md