feat: product enrichment observability, lab KB study, benchmark, copy + local-Hub E2E, docs; 1.3.0

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

release/RELEASE_MANIFEST.json

@@ -1,14 +1,14 @@
 {
  "artifact": "RELEASE_MANIFEST",
- "GTI_FISCAL_VERSION": "1.2.5",
+ "GTI_FISCAL_VERSION": "1.3.0",
  "generated_at": "2026-09-25T15:43:40+00:00",
  "hub": {
-  "version": "1.2.5",
+  "version": "1.3.0",
   "api_compat": "1.0",
   "engine_version": "0.3.0",
   "decision_version": "mission-04c-ipi-ex-split"
  },
- "agent_version": "1.2.5",
+ "agent_version": "1.3.0",
  "fiscal_engine": {
   "ENGINE_VERSION": "0.3.0",
   "DECISION_VERSION": "mission-04c-ipi-ex-split",
@@ -17,10 +17,10 @@
   "ICMS_CONTEXT_ENGINE_VERSION": "icms-context-v1"
  },
  "migrations": {
-  "alembic_head_in_repo": "0028_rtc_write_modes",
-  "applied_revision": "0028_rtc_write_modes",
-  "applied_revision_source": "production Hub 10.0.10.117 (gti-fiscal-hub-fiscal-hub-1), verified 2026-09-25",
-  "count": 28
+  "alembic_head_in_repo": "0029_product_enrichment",
+  "applied_revision": "0029_product_enrichment",
+  "applied_revision_source": "fresh + upgrade(0028->0029) + downgrade/upgrade verified on the dev PostgreSQL (schema parity by pg_dump -s); production applies 0029 at deploy (alembic upgrade head at container start)",
+  "count": 29
  },
  "datasets_active": [
   {
@@ -90,4 +90,4 @@
   }
  ],
  "note": "A release bump does not change fiscal semantics; engine/decision versions are versioned independently."
-}
+}