Release 1.4.1: a Bonded checkbox in the terminal tables

The config's per-terminal bonded key becomes editable in the dialog
(previously file-only, shown as a text suffix): checked, the
terminal's contacts short into one internally joined lug - the total
value stays prescribed, the per-contact split is a solve outcome.
Same-name rectangle groups seed it checked as before; unchecking one
falls back to the per-cell area share, and checking a single-contact
terminal gives it an equipotential-lug contact instead of uniform
injection. Save config... writes the flag back (removed when
unchecked - false is the schema default). With this, every
non-structural terminal option (active, values, v_oc, contact layer,
bonded, comment) is table-editable.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

tests/test_configfile.py

@@ -468,6 +468,20 @@ def test_active_and_comment_in_the_save_builders():
     assert "active" not in uj[1] and uj[1]["i_draw_a"] == 2.0
 
 
+def test_updated_terminals_json_moves_the_bonded_flag():
+    raw = [{"name": "pkg", "role": "load", "parts": ["U7"],
+            "i_draw_a": 1.8, "bonded": True},
+           {"name": "heat", "role": "load", "parts": ["U9"],
+            "i_draw_a": 2.0}]
+    rows = [PdnTerminalRow(name="pkg", role="load", resolved="",
+                           i_draw_a=1.8, bonded=False),
+            PdnTerminalRow(name="heat", role="load", resolved="",
+                           i_draw_a=2.0, bonded=True)]
+    uj = updated_terminals_json(raw, rows)
+    assert "bonded" not in uj[0]          # unchecked removes the key
+    assert uj[1]["bonded"] is True
+
+
 def test_inactive_row_saves_and_reloads(tmp_path):
     path = tmp_path / "fill_res_config.json"
     rows = [PdnTerminalRow(name="VIN", role="supply", resolved="",