fix: don't try to create item barcode if it already exists on save

[agritheory]

No description provided.

[github-actions]

📝 Draft Changelog Entry

Changelog

Fixed an issue where the system attempted to create a duplicate item barcode when saving a handling unit that already had an existing barcode assigned. The system now checks for existing barcodes before attempting to create new ones during the save operation.

This changelog entry was automatically generated by the Changelog Generator Action.

[github-actions]

Coverage Report

File	Stmts	Miss	Cover	Missing
__init__.py	1	0	100%
hooks.py	15	0	100%
install.py	24	24	0%	4, 6, 9–17, 20–21, 24, 27–28, 30–31, 33, 35–36, 38, 42–43
beam
__init__.py	0	0	100%
barcodes.py	96	43	55%	20–22, 30–32, 34–36, 40, 47, 69–70, 72–73, 79–81, 83–85, 92–94, 100, 110, 118, 125, 128–129, 135–136, 142, 148, 154, 160, 172, 175–178, 180–181
boot.py	12	12	0%	4, 6, 9–12, 17, 19–20, 24–25, 28
handling_unit.py	76	37	51%	29, 32, 53–55, 73, 84–85, 91–92, 94–95, 97–98, 100–101, 103, 105–108, 110–112, 114, 116, 118–119, 124, 126, 130, 132–133, 136, 138–139, 147
printing.py	93	55	40%	18–19, 48, 50–53, 62–66, 70–71, 83–87, 91, 97, 106–112, 114–115, 117, 122, 124–125, 140–145, 147–153, 160–163, 165–168
zpl_layout.py	246	246	0%	12–15, 17, 20, 36, 47–48, 51–52, 54–55, 58, 61, 64–67, 69–71, 77, 81–83, 86–87, 90–91, 93–94, 99, 101, 110–111, 113, 115, 118–120, 122–125, 128–129, 132, 140–141, 144–146, 154, 157, 161, 164, 167, 177–183, 185, 188, 193–196, 198, 201–206, 209–215, 217, 219, 222, 224–227, 231–233, 235–239, 241–245, 249–253, 258, 260, 263–269, 278–282, 285–292, 295–308, 311–313, 316–328, 331, 334–336, 339–353, 356–361, 364, 366, 369, 384, 386–387, 390–391, 393, 395, 397–399, 402, 411, 418–420, 423–424, 427, 429–433, 436, 439–442, 445–448, 451–453, 469, 471, 474–475, 496–501, 505, 507–508, 516–521, 524–525
beam/doctype
__init__.py	0	0	100%
beam/doctype/beam_settings
__init__.py	0	0	100%
beam_settings.py	10	4	60%	14–17
test_beam_settings.py	3	0	100%
beam/doctype/handling_unit
__init__.py	9	3	66%	12–14
handling_unit.py	16	1	93%	16
test_handling_unit.py	3	0	100%
beam/overrides
stock_entry.py	91	16	82%	115–116, 121–128, 134–135, 151, 183, 186–187
beam/print_format
__init__.py	0	0	100%
beam/print_format/handling_unit_6x4_zpl_format
__init__.py	0	0	100%
beam/print_format/handling_unit_label
__init__.py	0	0	100%
beam/print_format/item_barcode
__init__.py	0	0	100%
beam/print_format/labelary_print_preview
__init__.py	0	0	100%
beam/print_format/microqr_serial_no
__init__.py	0	0	100%
beam/print_format/warehouse_barcode
__init__.py	0	0	100%
beam/report
__init__.py	0	0	100%
beam/report/handling_unit_traceability
__init__.py	0	0	100%
handling_unit_traceability.py	44	44	0%	4–6, 9–11, 30–32, 34–35, 37–38, 41–42, 45–46, 48–49, 51–52, 54–55, 57, 63–65, 67–69, 71, 74–77, 79–81, 83–86, 89–90
beam/scan
__init__.py	188	31	83%	23, 33, 160–161, 171, 173–174, 178, 182–183, 186, 192, 221, 250, 252, 271–272, 278–285, 292, 300, 314, 422, 430, 437
config.py	26	26	0%	4, 6, 9–17, 19–21, 23–26, 28–30, 32–35, 37
tests
conftest.py	24	0	100%
test_handling_unit.py	467	59	87%	18–19, 21–22, 543, 567, 608, 618, 645, 648–649, 652–661, 668–671, 680–682, 684–685, 687–689, 697, 704, 706–712, 714, 724–727, 736–739, 741–743, 751, 758–760, 762
test_hooks_override.py	39	0	100%
test_item_barcode_print_format.py	14	0	100%
test_printing.py	40	0	100%
test_scan.py	24	0	100%
test_serial_number.py	54	0	100%
www
__init__.py	0	0	100%
TOTAL	1615	601	62%