introduce prodtest error codes

[TychoVrahe]

Summary

• Replaces prodtest CLI's string-based error codes with a stable integer system
• Each cli_error() call site gets a unique code that survives refactoring, command addition/removal, and message edits
• Wire format change: ERROR error "message" -> ERROR <int> "message"

Changes to cli.h / cli.c

• cli_error() signature: const char* code -> int code
• Framework codes (CLI_ERROR_INVALID_CMD etc.) converted from strings to integers 1?8
• Generic CLI_ERROR "error" macro removed

Rules (encoded as comments in the header)

• Codes are never reused - retired codes stay in the enum marked DEPRECATED
• New errors are appended to the relevant block; gaps are never filled
• 1000-code blocks allow 3-digit offsets per module (current largest: tropic at 100)

Breaking change

Host-side test scripts must be updated - the ERROR line now carries an integer instead of a string.

New file: prodtest_error_codes.h

Central prodtest_error_t enum with 326 unique codes across 24 module blocks of 1000:

Module	Range
backup-ram	1000-1999
ble	2000-2999
bootloader	3000-3999
button	4000-4999
haptic	5000-5999
manufacturing-lock	6000-6999
nfc	7000-7999
nrf	8000-8999
optiga	9000-9999
otp	10000-10999
otp-variant	11000-11999
power-manager	12000-12999
rtc	13000-13999
sdcard	14000-14999
secrets	15000-15999
secure-channel	16000-16999
tamper	17000-17999
telemetry	18000-18999
touch	19000-19999
tropic	20000-20999
unit-test	21000-21999
wpc	22000-22999
common	23000-23999
prodtest	24000-24999

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[github-actions]

en main(all)

model	device_test	click_test	persistence_test
T2T1	test(all) main(all)	test(all) main(all)	test(all) main(all)
T3B1	test(all) main(all)	test(all) main(all)	test(all) main(all)
T3T1	test(all) main(all)	test(all) main(all)	test(all) main(all)
T3W1	test(all) main(all)	test(all) main(all)	test(all) main(all)

Latest CI run: 24887348255