Fix all 8 firmware bugs with regression tests

Bugs fixed in adf4382a_manager.c:
- Bug #1: Move initialized=true before sync setup, propagate sync failure
- Bug #3: Implement TriggerTimedSync with sw_sync pulse (was no-op)
- Bug #5: Replace GPIO-only placeholder with TIM3 PWM for DELADJ
- Bug #7: Correct GPIOG pin definitions to match CubeMX (pins 6-15)

Bugs fixed in main.cpp:
- Bug #2: Remove pre-reset ad9523_setup() call (keep only post-reset)
- Bug #4: Move init error check before phase shift calls
- Bug #6: Fix timer variable (last_check -> last_check1) in temp block
- Bug #8: Uncomment uart_print/uart_println debug helpers

Test harness updates:
- All 8 tests rewritten to assert correct post-fix behavior
- Added TIM PWM mock (SPY_TIM_PWM_START/STOP/SET_COMPARE)
- Added mock_adf4382_set_timed_sync_retval for failure injection
- Updated shims and Makefile for new test dependencies
- All 8 tests pass: make clean && make test -> 8/8 passed

9_Firmware/9_1_Microcontroller/tests/ad_driver_mock.h

@@ -191,6 +191,7 @@ enum cpole1_capacitor { CPOLE1_0_PF = 0, CPOLE1_8_PF, CPOLE1_16_PF, CPOLE1_24_PF
 
 /* Default return code for mock driver functions (0 = success) */
 extern int mock_adf4382_init_retval;
+extern int mock_adf4382_set_timed_sync_retval;
 extern int mock_ad9523_setup_retval;
 
 /* ========================= ADF4382 mock API ======================= */