don't clobber ECUX.hex files when copying

[BenGardiner]

third time's the charm? @CamilleTTT

[github-actions]

🔨 Build & Macro Coverage Report

Default Builds — Hex File Sizes

ECU	Debug (tag 15.0)	Release (tag 15.0)
ECUA	527 KiB (539748 bytes)	356 KiB (364927 bytes)
ECUB	335 KiB (343817 bytes)	196 KiB (200926 bytes)
ECUC	315 KiB (323485 bytes)	175 KiB (179677 bytes)
ECUD	326 KiB (334150 bytes)	182 KiB (187259 bytes)

Macro Coverage Build Results

Variant	Macros Changed	Result	Warnings
gsusb	+ENABLE_GSUSB −ENABLE_CDC	✅ Pass	0
gsusb_and_bb	+ENABLE_GSUSB +ENABLE_BITBANG	✅ Pass	0
i2c	+ENABLE_I2C	✅ Pass	0
kwp	+ENABLE_KWP	✅ Pass	0
no_debug	−ENABLE_USB_DEBUG −ENABLE_JOYSTICK_CONTROLS −ENABLE_SCREEN −ENABLE_CHIP8 −GENERATE_RUNTIME_STATS	✅ Pass	0
no_dynamic_bitrate	−ENABLE_DYNAMIC_BITRATE	✅ Pass	0
no_extras	−ENABLE_J1979 −ENABLE_MINICTF −ENABLE_CHIP8 −ENABLE_SCREEN −ENABLE_SPI	✅ Pass	0
no_uds	−ENABLE_UDS −ENABLE_UDS_REPROGRAMMING	✅ Pass	12
uart	+ENABLE_UART −ENABLE_CDC −ENABLE_USB	✅ Pass	13
usb_autodetect	+ENABLE_USB_AUTODETECT	✅ Pass	0
watchdog	+WATCHDOG_ENABLE	✅ Pass	0

Source Code Compile Coverage

• Total .c source lines: 19743
• Lines compiled in ≥1 configuration: 18678 (~95%)
• ENABLE_ macro coverage: 22/22 (100.0%) macros tested in both ON and OFF states

Full ENABLE_ Macro Coverage Table

#	Macro	Tested ON	Tested OFF	Covered
1	ENABLE_ADC	default (ECUB, ECUC, ECUD)	default (ECUA)	✅
2	ENABLE_BITBANG	default (ECUA), variant: gsusb_and_bb	default (ECUB, ECUC, ECUD)	✅
3	ENABLE_CDC	default (ECUA)	default (ECUB, ECUC, ECUD), variant: gsusb, variant: uart	✅
4	ENABLE_CHIP8	default (ECUA)	default (ECUB, ECUC, ECUD), variant: no_debug, variant: no_extras	✅
5	ENABLE_DYNAMIC_BITRATE	default (ECUA, ECUB, ECUC, ECUD)	variant: no_dynamic_bitrate	✅
6	ENABLE_GSUSB	variant: gsusb, variant: gsusb_and_bb	default (ECUA, ECUB, ECUC, ECUD)	✅
7	ENABLE_I2C	variant: i2c	default (ECUA, ECUB, ECUC, ECUD)	✅
8	ENABLE_J1979	default (ECUA, ECUB, ECUC, ECUD)	variant: no_extras	✅
9	ENABLE_JOYSTICK_CONTROLS	default (ECUA)	default (ECUB, ECUC, ECUD), variant: no_debug	✅
10	ENABLE_KWP	variant: kwp	default (ECUA, ECUB, ECUC, ECUD)	✅
11	ENABLE_MINICTF	default (ECUA, ECUD)	default (ECUB, ECUC), variant: no_extras	✅
12	ENABLE_SCREEN	default (ECUA)	default (ECUB, ECUC, ECUD), variant: no_debug, variant: no_extras	✅
13	ENABLE_SPI	default (ECUA, ECUD)	default (ECUB, ECUC), variant: no_extras	✅
14	ENABLE_UART	variant: uart	default (ECUA, ECUB, ECUC, ECUD)	✅
15	ENABLE_UDS	default (ECUA, ECUB, ECUC, ECUD)	variant: no_uds	✅
16	ENABLE_UDS_REPROGRAMMING	default (ECUA, ECUB, ECUC, ECUD)	variant: no_uds	✅
17	ENABLE_USB	default (ECUA)	default (ECUB, ECUC, ECUD), variant: uart	✅
18	ENABLE_USB_AUTODETECT	variant: usb_autodetect	default (ECUA, ECUB, ECUC, ECUD)	✅
19	ENABLE_USB_DEBUG	default (ECUA)	default (ECUB, ECUC, ECUD), variant: no_debug	✅
20	ENABLE_XCP	default (ECUB, ECUC, ECUD)	default (ECUA)	✅
21	GENERATE_RUNTIME_STATS	default (ECUA, ECUB, ECUC, ECUD)	variant: no_debug	✅
22	WATCHDOG_ENABLE	variant: watchdog	default (ECUA, ECUB, ECUC, ECUD)	✅