feat: schedule live cycles from previous cycle end

[miohtama]

Why

Hyperliquid vault deposits only become tradeable after a 24 hour delay. With a daily strategy that is still scheduled from midnight-aligned wall-clock slots, the extra time spent actually running the cycle means the next live decision can drift away from the point where funds become available.

This PR adds an opt-in live trigger mode so the next cycle is scheduled 24 hours after the previous successful cycle really ended, instead of always snapping back to midnight.

What changed

• add StrategyCycleTrigger.since_last_cycle_end and expose it through STRATEGY_CYCLE_TRIGGER
• schedule live cycles from persisted decision_cycle_ended_at, with fallback to uptime completion timestamps
• reschedule rolling live cycles as one-shot jobs after each successful completion
• preserve the rolling logical cycle timestamp instead of snapping it back to wall-clock ticks
• relax the old wall-clock alignment assertion for this trigger mode only
• add focused scheduler helper coverage and a CLI integration test that runs start with 1 second cycles and verifies the offset behaviour
• add a changelog entry for the new feature