diff --git a/periscope/dependency/frontend/content/changelog.md b/periscope/dependency/frontend/content/changelog.md
index 861bf06..de205fa 100644
--- a/periscope/dependency/frontend/content/changelog.md
+++ b/periscope/dependency/frontend/content/changelog.md
@@ -2,6 +2,13 @@
 
 What's new in Periscope.
 
+## 2.39.1 — 2026-09-20 — src no longer imports PinScope review loop
+
+After 2.39.0 live smoke (Emmaforo ERROR 2 / WARNING 12 / INFO 18), native modules are the only review path from `periscope/src`. PinScope `validate.py` / `validation_tools.py` remain on disk.
+
+- [Changed] PCB review and deterministic checks import `review_parse` / `constraints_lookup` / `review_session`, not `validate.py`.
+- [Changed] Tests exercise the native parser and graph tools.
+
 ## 2.39.0 — 2026-09-20 — Fase C2: native DeepSeek review loop
 
 Live per-IC review runs from `periscope/src` (`review_session.py`, parse, graph tools). PinScope `validate.py` / `validation_tools.py` stay in `dependency/` as fallback; they are not deleted. LLM findings stay REVIEW; recommended never ERROR. AGPL unchanged. No parser/graph rewrite. No auto-place.
diff --git a/periscope/src/backend/periscopex/bom_pcb_check.py b/periscope/src/backend/periscopex/bom_pcb_check.py
index 6e83ddd..7d4e18f 100644
--- a/periscope/src/backend/periscopex/bom_pcb_check.py
+++ b/periscope/src/backend/periscopex/bom_pcb_check.py
@@ -26,7 +26,7 @@ from backend.periscopex.thermal_check import (
     _net_voltage,
     _specs_values,
 )
-from backend.periscopex.validate import _match_constraints
+from backend.periscopex.constraints_lookup import match_constraints as _match_constraints
 
 _FAMILIES = (
     "LQFP", "TQFP", "VQFP", "WQFN", "HVQFN", "VQFN", "QFN", "DFN",
diff --git a/periscope/src/backend/periscopex/dnp_check.py b/periscope/src/backend/periscopex/dnp_check.py
index 3cdd389..58865f8 100644
--- a/periscope/src/backend/periscopex/dnp_check.py
+++ b/periscope/src/backend/periscopex/dnp_check.py
@@ -19,7 +19,7 @@ from backend.periscopex.passive_rail_check import (
     _is_power_net,
     _pin_name_tokens,
 )
-from backend.periscopex.validate import _match_constraints
+from backend.periscopex.constraints_lookup import match_constraints as _match_constraints
 
 _EN_RE = re.compile(
     r"(?:^|[_/])(EN|ENA|ENABLE|n?SHDN|nEN|EN_N|CHIP_EN)(?:$|[_/\d])",
diff --git a/periscope/src/backend/periscopex/emi_check.py b/periscope/src/backend/periscopex/emi_check.py
index cb57cca..761e87c 100644
--- a/periscope/src/backend/periscopex/emi_check.py
+++ b/periscope/src/backend/periscopex/emi_check.py
@@ -20,7 +20,7 @@ from backend.periscopex.pcb_net_match import (
     refs_on_matched_net,
 )
 from backend.periscopex.si_check import bus_class, skip_si_net
-from backend.periscopex.validate import _match_constraints
+from backend.periscopex.constraints_lookup import match_constraints as _match_constraints
 
 _EMI_RE = re.compile(
     r"(emi|emc|common[-\s]?mode|cmc|choke|ferrite\s*bead|shield(?:ing)?|"
diff --git a/periscope/src/backend/periscopex/errata_check.py b/periscope/src/backend/periscopex/errata_check.py
index 7ec2470..4f74faa 100644
--- a/periscope/src/backend/periscopex/errata_check.py
+++ b/periscope/src/backend/periscopex/errata_check.py
@@ -10,7 +10,7 @@ from backend.periscopex.passive_rail_check import (
     _pin_name_tokens,
     _resistor_to_power,
 )
-from backend.periscopex.validate import _match_constraints
+from backend.periscopex.constraints_lookup import match_constraints as _match_constraints
 
 log = logging.getLogger(__name__)
 
diff --git a/periscope/src/backend/periscopex/filter_check.py b/periscope/src/backend/periscopex/filter_check.py
index 02b2dc5..2e54809 100644
--- a/periscope/src/backend/periscopex/filter_check.py
+++ b/periscope/src/backend/periscopex/filter_check.py
@@ -25,7 +25,7 @@ from backend.periscopex.passive_rail_check import (
     _pin_name_tokens,
     _resistor_ohms,
 )
-from backend.periscopex.validate import _match_constraints
+from backend.periscopex.constraints_lookup import match_constraints as _match_constraints
 
 _ADC_RATE_KEYS = ("adc_sample_rate", "adc_sample_rate_hz", "data_rate", "data_rate_hz")
 _DCR_MAX_KEYS = ("max_ferrite_dcr_ohms", "ferrite_dcr_max_ohms", "max_bead_dcr_ohms")
diff --git a/periscope/src/backend/periscopex/hf_coverage_check.py b/periscope/src/backend/periscopex/hf_coverage_check.py
index dafd5af..adf1a2c 100644
--- a/periscope/src/backend/periscopex/hf_coverage_check.py
+++ b/periscope/src/backend/periscopex/hf_coverage_check.py
@@ -15,7 +15,7 @@ from backend.periscopex.passive_rail_check import (
     _is_regulator_output_pin,
     _pin_label,
 )
-from backend.periscopex.validate import _match_constraints
+from backend.periscopex.constraints_lookup import match_constraints as _match_constraints
 
 _BULK_MIN_F = 1e-6
 _HF_MAX_F = 1e-6
diff --git a/periscope/src/backend/periscopex/internal_features_check.py b/periscope/src/backend/periscopex/internal_features_check.py
index 408a4e5..bcdaa08 100644
--- a/periscope/src/backend/periscopex/internal_features_check.py
+++ b/periscope/src/backend/periscopex/internal_features_check.py
@@ -7,7 +7,7 @@ from backend.periscopex.passive_rail_check import (
     _pin_name_tokens,
     _resistor_to_power,
 )
-from backend.periscopex.validate import _match_constraints
+from backend.periscopex.constraints_lookup import match_constraints as _match_constraints
 
 
 def check_internal_features(
diff --git a/periscope/src/backend/periscopex/passive_rail_check.py b/periscope/src/backend/periscopex/passive_rail_check.py
index 600d17e..b756d19 100644
--- a/periscope/src/backend/periscopex/passive_rail_check.py
+++ b/periscope/src/backend/periscopex/passive_rail_check.py
@@ -19,7 +19,7 @@ from backend.periscopex.models import (
     NetType,
     ResistorSpecs,
 )
-from backend.periscopex.validate import _match_constraints
+from backend.periscopex.constraints_lookup import match_constraints as _match_constraints
 from backend.periscopex.led_current_check import _parse_resistance
 from backend.periscopex.resolve_passives import _parse_spice_value
 
diff --git a/periscope/src/backend/periscopex/pcb_power_thermal.py b/periscope/src/backend/periscopex/pcb_power_thermal.py
index a5edffb..e2e97e8 100644
--- a/periscope/src/backend/periscopex/pcb_power_thermal.py
+++ b/periscope/src/backend/periscopex/pcb_power_thermal.py
@@ -28,7 +28,7 @@ from backend.periscopex.thermal_check import (
     _pin_net_by_role,
     _specs_values,
 )
-from backend.periscopex.validate import _match_constraints
+from backend.periscopex.constraints_lookup import match_constraints as _match_constraints
 
 # IPC-2221 §6.2 (empirical): I = k · ΔT^0.44 · A^0.725, A in mil², I in A.
 _IPC_B = 0.44
diff --git a/periscope/src/backend/periscopex/pi_check.py b/periscope/src/backend/periscopex/pi_check.py
index 7dbb084..33c755b 100644
--- a/periscope/src/backend/periscopex/pi_check.py
+++ b/periscope/src/backend/periscopex/pi_check.py
@@ -18,7 +18,7 @@ from backend.periscopex.pcb_net_match import (
     normalize_kicad_hierarchy_net,
     refs_on_matched_net,
 )
-from backend.periscopex.validate import _match_constraints
+from backend.periscopex.constraints_lookup import match_constraints as _match_constraints
 
 _LOAD_KEYS = ("i_load_a", "i_load", "iout", "i_out")
 
diff --git a/periscope/src/backend/periscopex/placement_check.py b/periscope/src/backend/periscopex/placement_check.py
index f824dd7..efea379 100644
--- a/periscope/src/backend/periscopex/placement_check.py
+++ b/periscope/src/backend/periscopex/placement_check.py
@@ -24,7 +24,7 @@ from backend.periscopex.models import (
     LayoutPad,
 )
 from backend.periscopex.pcb_net_match import kicad_nets_match
-from backend.periscopex.validate import _match_constraints
+from backend.periscopex.constraints_lookup import match_constraints as _match_constraints
 
 
 def _pad_for(layout: LayoutGraph, ref: str, number: str) -> LayoutPad | None:
diff --git a/periscope/src/backend/periscopex/power_margin_check.py b/periscope/src/backend/periscopex/power_margin_check.py
index 2389550..084cd99 100644
--- a/periscope/src/backend/periscopex/power_margin_check.py
+++ b/periscope/src/backend/periscopex/power_margin_check.py
@@ -27,7 +27,7 @@ from backend.periscopex.thermal_check import (
     _pin_net_by_role,
     _specs_values,
 )
-from backend.periscopex.validate import _match_constraints
+from backend.periscopex.constraints_lookup import match_constraints as _match_constraints
 
 _IQ_KEYS = (
     "iq_a", "quiescent_current_a", "supply_current_a", "idd_a", "icc_a",
diff --git a/periscope/src/backend/periscopex/review_fingerprint.py b/periscope/src/backend/periscopex/review_fingerprint.py
index e2826c7..7beb545 100644
--- a/periscope/src/backend/periscopex/review_fingerprint.py
+++ b/periscope/src/backend/periscopex/review_fingerprint.py
@@ -6,7 +6,7 @@ import hashlib
 import json
 
 from backend.periscopex.models import ComponentType, DesignGraph
-from backend.periscopex.validate import _match_constraints
+from backend.periscopex.constraints_lookup import match_constraints as _match_constraints
 
 
 def ic_neighborhood_fingerprint(
diff --git a/periscope/src/backend/periscopex/sequencing_check.py b/periscope/src/backend/periscopex/sequencing_check.py
index 9c15aa6..bfefe14 100644
--- a/periscope/src/backend/periscopex/sequencing_check.py
+++ b/periscope/src/backend/periscopex/sequencing_check.py
@@ -20,7 +20,7 @@ from backend.periscopex.thermal_check import (
     _pin_net_by_role,
     _specs_values,
 )
-from backend.periscopex.validate import _match_constraints
+from backend.periscopex.constraints_lookup import match_constraints as _match_constraints
 
 _PG_RE = re.compile(r"(?:^|[_/])(PG|PGOOD|PWRGD|POWER_GOOD|POK)(?:$|[_/\d])", re.I)
 _EN_RE = re.compile(
diff --git a/periscope/src/backend/periscopex/si_check.py b/periscope/src/backend/periscopex/si_check.py
index 7250827..53be5d7 100644
--- a/periscope/src/backend/periscopex/si_check.py
+++ b/periscope/src/backend/periscopex/si_check.py
@@ -14,7 +14,7 @@ import re
 from backend.periscopex.models import ComponentType, DesignGraph, Finding, LayoutGraph, LayoutSegment
 from backend.periscopex.pcb_net_match import kicad_nets_match, normalize_kicad_hierarchy_net
 from backend.periscopex.pcb_power_thermal import _is_gnd_name
-from backend.periscopex.validate import _match_constraints
+from backend.periscopex.constraints_lookup import match_constraints as _match_constraints
 
 _PAIR_SUFFIXES = (
     ("_DP", "_DM"),
diff --git a/periscope/src/backend/periscopex/thermal_check.py b/periscope/src/backend/periscopex/thermal_check.py
index 221504c..ccf6f44 100644
--- a/periscope/src/backend/periscopex/thermal_check.py
+++ b/periscope/src/backend/periscopex/thermal_check.py
@@ -25,7 +25,7 @@ from backend.periscopex.models import (
 )
 from backend.periscopex.passive_rail_check import _pin_name_tokens
 from backend.periscopex.resolve_passives import _parse_spice_value
-from backend.periscopex.validate import _match_constraints
+from backend.periscopex.constraints_lookup import match_constraints as _match_constraints
 
 _TA_C = 25.0
 _TJ_WARN_C = 125.0
diff --git a/periscope/src/backend/periscopex/timing_check.py b/periscope/src/backend/periscopex/timing_check.py
index 4248e8d..6f9cc98 100644
--- a/periscope/src/backend/periscopex/timing_check.py
+++ b/periscope/src/backend/periscopex/timing_check.py
@@ -16,7 +16,7 @@ from backend.periscopex.passive_rail_check import (
     _resistor_to_ground,
     _resistor_to_power,
 )
-from backend.periscopex.validate import _match_constraints
+from backend.periscopex.constraints_lookup import match_constraints as _match_constraints
 
 _T_RESET_KEYS = ("t_reset_min_s", "t_reset_min_ms", "reset_delay_ms", "t_por_ms")
 _VIH_KEYS = ("vih", "vih_min_v", "v_ih_min", "vih_min")
diff --git a/periscope/src/backend/services/pcb_validation.py b/periscope/src/backend/services/pcb_validation.py
index ab06f32..5011d02 100644
--- a/periscope/src/backend/services/pcb_validation.py
+++ b/periscope/src/backend/services/pcb_validation.py
@@ -15,9 +15,10 @@ from backend.periscopex.pcb_review import (
     build_pcb_layout_context,
     format_library_extraction,
 )
-from backend.periscopex.validate import ReviewResult, _match_constraints
+from backend.periscopex.constraints_lookup import match_constraints as _match_constraints
+from backend.periscopex.review_parse import ReviewResult
 from backend.services.api_logs import ApiLogger
-from backend.services.validation import review_ic_async
+from backend.services.review_session import review_ic_async
 
 log = logging.getLogger(__name__)
 
diff --git a/periscope/src/docs/development/PINSCOPE_INDEPENDENCE_PLAN.md b/periscope/src/docs/development/PINSCOPE_INDEPENDENCE_PLAN.md
index 9792ab5..5c83805 100644
--- a/periscope/src/docs/development/PINSCOPE_INDEPENDENCE_PLAN.md
+++ b/periscope/src/docs/development/PINSCOPE_INDEPENDENCE_PLAN.md
@@ -1,6 +1,6 @@
 # Piano — indipendenza architettonica e di licenza da PinScope
 
-**Stato:** split fisico **2.38.0**. Fase C2 native review loop **2.39.0** (pytest verde; `validate.py` / `validation_tools.py` restano in `dependency/` come fallback `_inherited_review_ic_async`). Fork GitHub non staccato.  
+**Stato:** split **2.38.0**. C2 native review loop **2.39.0** live. **2.39.1** `periscope/src` non importa più `validate.py` / `validation_tools.py` (PCB incluso). File PinScope restano in `dependency/`. Fork non staccato.  
 **Gate Michele:** sostituire/smettere di chiamare un modulo `dependency/` solo dopo pytest + deploy smoke. Se la verifica fallisce, resta il path ereditato.  
 **Sequenza:** split → sostituzione incrementale (C2 loop → C3 extraction → C4 PCB off `validate.py`). **Mai** empty-delete. Parsers/graph (C5/E) e auto-place fuori scope. AGPL resta.
 
@@ -226,7 +226,7 @@ Qui sì si riscrive l’engine ereditato. Ordine interno:
 | C1 | Adapter: `validate.py` emette solo `Finding` grezzi → `complete_finding` | Già parziale; chiudere i campi doppi |
 | C2 | **REWRITE** loop per-IC native in `periscope/src` (DeepSeek, tools su `DesignGraph`) | **Shipped 2.39.0** live `review_ic_async` → `review_session`; PinScope files **kept**, not called from live loop |
 | C3 | Extraction: `local_skill.py` + schemi JSON (KEEP schema se identici; REWRITE orchestrazione Anthropic) | |
-| C4 | Spegnere import da `validate.py` nel PCB (`_parse_review` → parser finding nativo) | Toglie INDIRECT PCB→PinScope reviewer |
+| C4 | Spegnere import da `validate.py` nel PCB (`_parse_review` → parser finding nativo) | **Shipped 2.39.1** `pcb_validation` → `review_parse` / `review_session` |
 | C5 | Test golden `simple_project` + Emmaforo: parity FACT/REQUIREMENT, non parity prose | |
 
 **Non in C:** riscrivere `graph.py` / parser KiCad.
diff --git a/periscope/src/scripts/smoke_simple_project.py b/periscope/src/scripts/smoke_simple_project.py
index 6829795..8c9b754 100644
--- a/periscope/src/scripts/smoke_simple_project.py
+++ b/periscope/src/scripts/smoke_simple_project.py
@@ -50,7 +50,7 @@ def _check_model_defaults() -> list[str]:
 
 def _check_simple_project_offline() -> list[str]:
     from backend.periscopex.models import DesignGraph
-    from backend.periscopex.validation_tools import shortest_path
+    from backend.periscopex.review_tools import shortest_path
 
     errs: list[str] = []
     graph_path = SIMPLE / "design_graph.json"
diff --git a/tests/test_datasheet_excerpt_tool.py b/tests/test_datasheet_excerpt_tool.py
index 171e837..248a319 100644
--- a/tests/test_datasheet_excerpt_tool.py
+++ b/tests/test_datasheet_excerpt_tool.py
@@ -12,14 +12,14 @@ from pypdf import PdfWriter
 
 from backend.periscopex.models import DesignGraph
 from backend.periscopex.utils import safe_mpn
-from backend.periscopex.validation_tools import (
+from backend.periscopex.review_tools import (
     EXCERPT_TOPICS,
     ExcerptState,
     execute_tool,
     get_datasheet_excerpt,
 )
 from backend.services.llm.types import PdfBlock
-from backend.services.validation import _signal_neighbors
+from backend.services.review_session import _signal_neighbors
 
 GRAPH = SIMPLE_PROJECT / "design_graph.json"
 IC_MPNS = {
diff --git a/tests/test_finding_engine.py b/tests/test_finding_engine.py
index e310453..ebdeb53 100644
--- a/tests/test_finding_engine.py
+++ b/tests/test_finding_engine.py
@@ -10,7 +10,7 @@ from backend.periscopex.finding_engine import (
     lookup_rule,
 )
 from backend.periscopex.models import Finding
-from backend.periscopex.validate import assign_finding_ids, _parse_review
+from backend.periscopex.review_parse import assign_finding_ids, parse_submit_review as _parse_review
 
 
 def test_recommended_never_error():
diff --git a/tests/test_pcb_review.py b/tests/test_pcb_review.py
index c73d939..e403fc5 100644
--- a/tests/test_pcb_review.py
+++ b/tests/test_pcb_review.py
@@ -283,7 +283,7 @@ def test_pcb_ai_finding_gets_action():
 
 
 def test_parse_review_action_field_without_recommendation():
-    from backend.periscopex.validate import _parse_review
+    from backend.periscopex.review_parse import parse_submit_review as _parse_review
 
     result = _parse_review(
         {
diff --git a/tests/test_quote_verify.py b/tests/test_quote_verify.py
index e4e2b75..a3ba4cd 100644
--- a/tests/test_quote_verify.py
+++ b/tests/test_quote_verify.py
@@ -8,7 +8,7 @@ from backend.periscopex.quote_verify import (
     quote_in_text,
     verify_finding_citations,
 )
-from backend.periscopex.validate import _parse_review
+from backend.periscopex.review_parse import parse_submit_review as _parse_review
 from backend.services.llm.pdf_ingest import make_text_pdf
 
 
diff --git a/tests/test_review_parse.py b/tests/test_review_parse.py
index 114fbb3..bf536f5 100644
--- a/tests/test_review_parse.py
+++ b/tests/test_review_parse.py
@@ -1,6 +1,6 @@
 """submit_review parsing — ERROR without a datasheet quote is demoted."""
 
-from backend.periscopex.validate import _parse_review
+from backend.periscopex.review_parse import parse_submit_review as _parse_review
 
 
 def test_error_without_quote_becomes_unverified_warning():
diff --git a/tests/test_roadmap_integrations.py b/tests/test_roadmap_integrations.py
index d1e8bd6..67d759e 100644
--- a/tests/test_roadmap_integrations.py
+++ b/tests/test_roadmap_integrations.py
@@ -4,7 +4,7 @@ from __future__ import annotations
 
 from backend.periscopex.library_gate import pintable_checksum, should_promote_extraction
 from backend.periscopex.models import Component, ComponentType, DesignGraph, Net, NetType, PinConnection
-from backend.periscopex.validation_tools import shortest_path
+from backend.periscopex.review_tools import shortest_path
 from backend.services.api_logs import cache_stats_by_stage
 
 
diff --git a/tests/test_validation_concurrency.py b/tests/test_validation_concurrency.py
index 235e2ae..49f0ce2 100644
--- a/tests/test_validation_concurrency.py
+++ b/tests/test_validation_concurrency.py
@@ -23,7 +23,7 @@ from pypdf import PdfWriter
 from backend.config import settings
 from backend.periscopex.models import Component, ComponentType, DesignGraph, Finding
 from backend.periscopex.utils import safe_mpn
-from backend.periscopex.validate import ReviewResult
+from backend.periscopex.review_parse import ReviewResult
 from backend.services import validation as val
 from backend.services.api_logs import ApiLogger
 from backend.services.storage import LocalStorageBackend