feat: add M95M02-only GAS and EEPROM profiles

Expose the existing registers through Modbus and service CAN using one GAS provider only in M95M02 builds.
Include the EEPROM layout/driver, LOAD protection and calibration, firmware identity and shared CCS build workflow.
Add transport/profile and SCI8 validation tests, documentation and the checked M95M02 firmware image.

tests/firmware_identity/port_test.c

@@ -0,0 +1,33 @@
+/* Test the actual 167 binding, not just a fake protocol backend. Build against
+ * the generated header from the firmware build under test. No MCU registers. */
+#include "firmware_identity.h"
+#include "firmware_info_static.h"
+#include "ump_tms28335.h"
+#include <assert.h>
+static unsigned logger_reads, logger_writes;
+unsigned int ump_log_read(unsigned int address)
+{ (void)address; ++logger_reads; return 0x554dU; }
+int ump_log_write(unsigned int address, unsigned int value)
+{ (void)address; (void)value; ++logger_writes; return 1; }
+
+int main(void)
+{
+    uint16_t words[UMP_MAX_WORDS];
+    ump_octet wire[UMP_RTU_CAPACITY];
+    unsigned error, i;
+    assert(ump_tms28335_prepare(3, UMP_FIRMWARE_INFO, 12, words, &error) == 12 && !error);
+    assert(words[0] == 1 && words[1] == FIRMWARE_VERSION_MAJOR);
+    assert(words[2] == FIRMWARE_VERSION_MINOR && words[3] == FIRMWARE_VERSION_PATCH);
+    assert(words[4] == FI_YEAR && words[5] == FI_PAIR(FI_MONTH, FI_DAY));
+    assert(words[8] == FI_PAIR(FI_ID_0, FI_ID_1));
+    assert(logger_reads == 0);
+    assert(ump_tms28335_rtu(1,3,UMP_FIRMWARE_INFO,12,wire,UMP_RTU_CAPACITY) == 29);
+    for (i=0; i<12; ++i) assert(((wire[3+i*2]<<8) | wire[4+i*2]) == words[i]);
+    assert(ump_crc(wire,29) == 0);
+    ump_tms28335_prepare(6,UMP_FIRMWARE_INFO,123,words,&error);
+    assert(error == 2 && logger_writes == 0);
+    /* Firmware reads must not steal the existing logger window. */
+    assert(ump_tms28335_prepare(3,UMP_BASE,16,words,&error) == 16 && !error);
+    assert(logger_reads == 16 && words[0] == 0x554dU);
+    return 0;
+}