Add 8HP layout with fully automated routing pipeline

- Update PCB to 8HP format (40x100mm) with v2 component placement
- Add automated routing scripts (autoroute.py runs full pipeline headlessly)
- Update panel spec and SVG for 8HP dimensions
- Board routes in <1 second with 0 unconnected pads

Scripts:
- autoroute.py: Full CLI pipeline (place → export → route → import → DRC)
- autoroute_full.py: Same pipeline for KiCad scripting console
- place_8hp.py: Component placement only
- route.sh/freeroute.sh: Routing helpers

hardware/kicad/scripts/move_to_origin.py

@@ -0,0 +1,45 @@
+#!/usr/bin/env python3
+"""
+Move board and all components to origin (0,0)
+Run in KiCad PCB Editor: Tools → Scripting Console
+Then: exec(open('scripts/move_to_origin.py').read())
+"""
+
+import pcbnew
+
+board = pcbnew.GetBoard()
+
+# Get current board origin from edge cuts
+bbox = board.GetBoardEdgesBoundingBox()
+offset_x = bbox.GetX()
+offset_y = bbox.GetY()
+
+print(f"Current board origin: ({pcbnew.ToMM(offset_x):.2f}, {pcbnew.ToMM(offset_y):.2f}) mm")
+
+if offset_x == 0 and offset_y == 0:
+    print("Board is already at origin!")
+else:
+    # Move all footprints
+    for fp in board.GetFootprints():
+        pos = fp.GetPosition()
+        new_pos = pcbnew.VECTOR2I(pos.x - offset_x, pos.y - offset_y)
+        fp.SetPosition(new_pos)
+
+    # Move all drawings (including board outline)
+    for drawing in board.GetDrawings():
+        if hasattr(drawing, 'Move'):
+            drawing.Move(pcbnew.VECTOR2I(-offset_x, -offset_y))
+
+    # Move all tracks
+    for track in board.GetTracks():
+        track.Move(pcbnew.VECTOR2I(-offset_x, -offset_y))
+
+    # Move all zones
+    for zone in board.Zones():
+        zone.Move(pcbnew.VECTOR2I(-offset_x, -offset_y))
+
+    print(f"Moved everything by ({-pcbnew.ToMM(offset_x):.2f}, {-pcbnew.ToMM(offset_y):.2f}) mm")
+    print("Board is now at origin (0, 0)")
+
+pcbnew.Refresh()
+print("\nDone! Save (Ctrl+S), delete all tracks, then run place_6hp.py")