Record Accepted PCB Placement And Fit

Align component groups, repair affected routing, and add preservation
audits.
Assign the confirmed U2 footprint and update pull-ups to 2 kΩ across
design files.
Document user acceptance, switch to an A3 worksheet, and refresh PCB
exports.

hardware/PCB/validation/pcb-parity-drc.json

@@ -1,7 +1,7 @@
 {
     "$schema": "https://schemas.kicad.org/drc.v1.json",
     "coordinate_units": "mm",
-    "date": "2026-09-21T22:52:26",
+    "date": "2026-09-22T10:24:36",
     "ignored_checks": [
         {
             "description": "Footprint has no courtyard defined",
@@ -30,23 +30,7 @@
         "exclusion"
     ],
     "kicad_version": "10.0.6",
-    "schematic_parity": [
-        {
-            "description": "Carrier:MAX3243_Reference_Provisional stimmt nicht mit dem Footprint des Symbols () überein.",
-            "items": [
-                {
-                    "description": "Footprint U2",
-                    "pos": {
-                        "x": 143.0,
-                        "y": 126.67
-                    },
-                    "uuid": "812387f6-6524-459e-8102-fe9c55122668"
-                }
-            ],
-            "severity": "warning",
-            "type": "footprint_symbol_mismatch"
-        }
-    ],
+    "schematic_parity": [],
     "source": "serial-carrier.kicad_pcb",
     "unconnected_items": [],
     "violations": []