Ship remaining PCB plan slices: BOM chain, SPOF, EMI FACT, gated Tj.

Package/pinout/ratings mismatches, SPOF as REVIEW, EMI only with a
datasheet quote, and Tj from copper+vias+θJA when every parameter exists.
Re-extract SI layout_rules from 1.12.0; ImpedenceFinder license stays UNKNOWN.

backend/periscopex/pcb_checks.py

@@ -6,6 +6,8 @@ import logging
 from collections import Counter
 
 from backend.periscopex.derating import build_derating_table
+from backend.periscopex.bom_pcb_check import check_bom_pcb_datasheet
+from backend.periscopex.emi_check import check_emi
 from backend.periscopex.esd_return_check import check_esd, check_return_path
 from backend.periscopex.finding_engine import complete_findings
 from backend.periscopex.functional_groups import FunctionalGroupsReport
@@ -14,6 +16,7 @@ from backend.periscopex.models import DesignGraph, Finding, LayoutGraph
 from backend.periscopex.pcb_net_match import check_pcb_net_match
 from backend.periscopex.pcb_power_thermal import (
     check_pcb_gnd_stitch,
+    check_pcb_junction_temp,
     check_pcb_kelvin,
     check_pcb_power_traces,
     check_pcb_thermal_copper,
@@ -22,6 +25,7 @@ from backend.periscopex.pcb_power_thermal import (
 from backend.periscopex.pi_check import check_power_integrity
 from backend.periscopex.placement_check import check_placement
 from backend.periscopex.si_check import check_si
+from backend.periscopex.spof_check import check_spof
 from backend.periscopex.timing_check import check_timing
 
 log = logging.getLogger(__name__)
@@ -193,6 +197,10 @@ def run_pcb_checks(
         ("pi_check", lambda: check_power_integrity(graph, constraints_map, layout)),
         ("esd_check", lambda: check_esd(graph, constraints_map)),
         ("return_path", lambda: check_return_path(graph, layout)),
+        ("bom_pcb", lambda: check_bom_pcb_datasheet(graph, constraints_map, layout)),
+        ("spof_check", lambda: check_spof(graph, constraints_map)),
+        ("emi_check", lambda: check_emi(graph, constraints_map, layout)),
+        ("pcb_junction_temp", lambda: check_pcb_junction_temp(graph, constraints_map, layout)),
     ):
         try:
             out.extend(fn())