Systemic crash on DEATH TIMING

```
DEATH TIMING

0ms: philo 1 is thinking
0ms: philo 1 has taken a fork
0ms: philo 1 has taken a fork
0ms: philo 1 is eating
0ms: philo 3 is thinking
0ms: philo 3 has taken a fork
0ms: philo 2 is thinking
200ms: philo 1 is sleeping
200ms: philo 2 has taken a fork
200ms: philo 3 has taken a fork
200ms: philo 3 is eating
300ms: philo 1 is thinking
311ms: philo 1 died
Traceback (most recent call last):
File "/home/maplepy/git/cc/philosophers/philo/socrates/socrates.py", line 302, in
exit(socrates(args.path, args.philo))
File "/home/maplepy/git/cc/philosophers/philo/socrates/socrates.py", line 258, in socrates
test_program(f"{bin_path}/philo/philo")
File "/home/maplepy/git/cc/philosophers/philo/socrates/socrates.py", line 177, in test_program
if run_starvation_measures(binary) is False:
File "/home/maplepy/git/cc/philosophers/philo/socrates/socrates.py", line 151, in run_starvation_measures
results.append(measure_starvation_timing(binary))
File "/home/maplepy/git/cc/philosophers/philo/socrates/socrates.py", line 121, in measure_starvation_timing
start_time = int(first_line[:separator_index])
ValueError: invalid literal for int() with base 10: '0ms:'
```

Start in philo/socrates/socrates.py, especially measure_starvation_timing at the traceback location around line 121. Reproduce the DEATH TIMING output and inspect how its timestamp is parsed; done means the starvation test handles the shown timestamp format without raising ValueError.

Written by the indexing model from the issue text.