changing wait timers to 0.25 sec

[mkf-sysangels]

unnecessary startup and recovery latency even when the waited condition resolved in milliseconds.

sleep(5) → sleep(0.25)
Log message throttled: only printed every 8 iterations (every 2 seconds)

Impact

Loop	Before	After	Worst-case reduction
DB init poll	5s per retry	0.25s per retry	4.75s per retry
DB connection retry	5s per retry	0.25s per retry	4.75s per retry
DB schema reflection	1s per retry	0.25s per retry	0.75s per retry
DB lock file poll	1s per retry	0.25s per retry	0.75s per retry