EinarBoard respin WIP: E-J1 pad renumber, PFI 4.40V (R51 270k), HV24 24V clearance class, J1 nets ripped for reroute

J1 pads renumbered end-for-end (positions/uuids kept, nets follow numbers, lib id renamed Drogheda:..._RevNum_EJ1 so library-update cannot revert); verified pad-by-pad against the module landing map. R51 287k->270k on board+schematic (PFI trip 4.60->4.40V falling, per 24-Jul bench data). HV24 class (0.5mm clearance) assigned to /24V_IN, 24V, IGN_IN, Q10_GATE after the 23-Jul inner-layer bridge incident. 177 segments/vias ripped on the 11 J1 signal nets + 5 power stubs: reroute pending in the inter-socket channel. NOTE: pre-existing PWR_HI/PWR_MID netclass patterns lack the '/' prefix and likely never matched.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01GSKKes8GsS4YHAMWJ44tCm

03-Architecture-Hardware/kicad/hbox-watchdog-v3-PROD.kicad_pro

@@ -573,6 +573,25 @@
         "via_diameter": 0.8,
         "via_drill": 0.4,
         "wire_width": 6
+      },
+      {
+        "bus_width": 12,
+        "clearance": 0.5,
+        "diff_pair_gap": 0.25,
+        "diff_pair_via_gap": 0.25,
+        "diff_pair_width": 0.2,
+        "line_style": 0,
+        "microvia_diameter": 0.3,
+        "microvia_drill": 0.1,
+        "name": "HV24",
+        "pcb_color": "rgba(0, 0, 0, 0.000)",
+        "priority": 0,
+        "schematic_color": "rgba(0, 0, 0, 0.000)",
+        "track_width": 0.5,
+        "tuning_profile": "",
+        "via_diameter": 0.8,
+        "via_drill": 0.4,
+        "wire_width": 6
       }
     ],
     "meta": {
@@ -644,6 +663,22 @@
       {
         "netclass": "PWR_MID",
         "pattern": "SW_IN"
+      },
+      {
+        "netclass": "HV24",
+        "pattern": "/24V_IN"
+      },
+      {
+        "netclass": "HV24",
+        "pattern": "24V"
+      },
+      {
+        "netclass": "HV24",
+        "pattern": "IGN_IN"
+      },
+      {
+        "netclass": "HV24",
+        "pattern": "Q10_GATE"
       }
     ]
   },
@@ -791,4 +826,4 @@
     },
     "tuning_profiles_impedance_geometric": []
   }
-}
+}

03-Architecture-Hardware/kicad/hbox-watchdog-v3-PROD.kicad_sch

@@ -22453,7 +22453,7 @@
 				)
 			)
 		)
-		(property "Value" "287k/1%"
+		(property "Value" "270k/1%"
 			(at 207.264 200.66 0)
 			(show_name no)
 			(do_not_autoplace no)
@@ -22495,6 +22495,9 @@
 				)
 			)
 		)
+    (property "Note" "E-PFI 2026-07-24: PFI trip 4.40 V falling (was 287k = 4.60 V) — bench data: modem inrush tripped 4.60 V on battery-less bench. LCSC: re-pick 270k 1% 0603 in the sourcing pass." (at 201.676 200.66 0)
+      (effects (font (size 1.27 1.27)) (hide yes))
+    )
 		(pin "1"
 			(uuid "adc94d42-1132-4fd8-a2e8-83817ba6ce9b")
 		)