build: be quiet unless there's a problem

[BenGardiner]

command line builds just print the 4x 'build done 0 errors, 0 warnings' lines (one for each ECU)

CI builds are still noisy

[github-actions]

🔨 Build & Macro Coverage Report

Default Builds — Hex File Sizes

ECU	Debug (tag 15.0)	Debug (gsusb) (tag 15.0)	Release (tag 15.0)	Release (gsusb) (tag 15.0)
ECUA	482 KiB (494110 bytes)	497 KiB (509087 bytes)	314 KiB (322439 bytes)	323 KiB (331545 bytes)
ECUB	332 KiB (340262 bytes)	332 KiB (340262 bytes)	194 KiB (199036 bytes)	194 KiB (199036 bytes)
ECUC	312 KiB (319975 bytes)	312 KiB (319975 bytes)	173 KiB (177787 bytes)	173 KiB (177787 bytes)
ECUD	322 KiB (330415 bytes)	322 KiB (330415 bytes)	180 KiB (185279 bytes)	180 KiB (185279 bytes)

Macro Coverage Build Results

ECU	Variant	Macros Changed	Result	Hex Size	Warnings
ECUA	gsusb	+ENABLE_GSUSB −ENABLE_CDC	✅ Pass	266 KiB	0
ECUA	no_debug	−ENABLE_USB_DEBUG −ENABLE_JOYSTICK_CONTROLS −ENABLE_SCREEN −ENABLE_CHIP8 −GENERATE_RUNTIME_STATS	✅ Pass	223 KiB	1
ECUA	no_extras	−ENABLE_J1979 −ENABLE_MINICTF −ENABLE_CHIP8 −ENABLE_SCREEN −ENABLE_SPI	✅ Pass	233 KiB	1
ECUA	no_uds	−ENABLE_UDS −ENABLE_UDS_REPROGRAMMING	✅ Pass	271 KiB	1
ECUB	kwp	+ENABLE_KWP	✅ Pass	197 KiB	0
ECUB	no_dynamic_bitrate	−ENABLE_DYNAMIC_BITRATE	✅ Pass	193 KiB	0
ECUB	watchdog	+WATCHDOG_ENABLE	✅ Pass	194 KiB	0
ECUC	uart	+ENABLE_UART	✅ Pass	190 KiB	0

Source Code Compile Coverage

• Total .c source lines: 18024
• Lines compiled in ≥1 configuration: 16811 (~93%)
• ENABLE_ macro coverage: 19/21 (90.5%) 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_CDC	default (ECUA)	default (ECUB, ECUC, ECUD), variant: gsusb (ECUA)	✅
3	ENABLE_CHIP8	default (ECUA)	default (ECUB, ECUC, ECUD), variant: no_debug (ECUA), variant: no_extras (ECUA)	✅
4	ENABLE_DYNAMIC_BITRATE	default (ECUA, ECUB, ECUC, ECUD)	variant: no_dynamic_bitrate (ECUB)	✅
5	ENABLE_GSUSB	variant: gsusb (ECUA)	default (ECUA, ECUB, ECUC, ECUD)	✅
6	ENABLE_I2C	—	default (ECUA, ECUB, ECUC, ECUD)	⬜
7	ENABLE_J1979	default (ECUA, ECUB, ECUC, ECUD)	variant: no_extras (ECUA)	✅
8	ENABLE_JOYSTICK_CONTROLS	default (ECUA)	default (ECUB, ECUC, ECUD), variant: no_debug (ECUA)	✅
9	ENABLE_KWP	variant: kwp (ECUB)	default (ECUA, ECUB, ECUC, ECUD)	✅
10	ENABLE_MINICTF	default (ECUA, ECUD)	default (ECUB, ECUC), variant: no_extras (ECUA)	✅
11	ENABLE_SCREEN	default (ECUA)	default (ECUB, ECUC, ECUD), variant: no_debug (ECUA), variant: no_extras (ECUA)	✅
12	ENABLE_SPI	default (ECUA, ECUD)	default (ECUB, ECUC), variant: no_extras (ECUA)	✅
13	ENABLE_UART	variant: uart (ECUC)	default (ECUA, ECUB, ECUC, ECUD)	✅
14	ENABLE_UDS	default (ECUA, ECUB, ECUC, ECUD)	variant: no_uds (ECUA)	✅
15	ENABLE_UDS_REPROGRAMMING	default (ECUA, ECUB, ECUC, ECUD)	variant: no_uds (ECUA)	✅
16	ENABLE_USB	default (ECUA)	default (ECUB, ECUC, ECUD)	✅
17	ENABLE_USB_AUTODETECT	—	default (ECUA, ECUB, ECUC, ECUD)	⬜
18	ENABLE_USB_DEBUG	default (ECUA)	default (ECUB, ECUC, ECUD), variant: no_debug (ECUA)	✅
19	ENABLE_XCP	default (ECUB, ECUC, ECUD)	default (ECUA)	✅
20	GENERATE_RUNTIME_STATS	default (ECUA, ECUB, ECUC, ECUD)	variant: no_debug (ECUA)	✅
21	WATCHDOG_ENABLE	variant: watchdog (ECUB)	default (ECUA, ECUB, ECUC, ECUD)	✅