Improve Svc/CmdSequencer alignment

[timcanham]

F´ Version	1.5.3
Affected Component	Svc/CmdSequencer

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Feature Description

Revisit time alignment on relative commands.

Rationale

A R00:00:0X typically delays X+1 seconds if the sequencer is called at 1Hz, so the R is not accurate.

[matt392code]

cmdseq-fix.txt
Propsed fix for the CmdSequencer timing alignment issue.
Here are the key changes:

1. Added microsecond-level compensation:
   • Convert timing to microseconds for precise adjustment
   • Subtract one second (1,000,000 microseconds) to compensate for the 1Hz execution offset
   • Only apply compensation when there's enough time margin (>= 1 second)
2. Enhanced execution precision:
   • Added a precision threshold (100 microseconds) for timing comparisons
   • Improved time comparison logic in isExecuteTime()
   • Separate handling for seconds and microseconds components
3. Maintained original functionality:
   • Preserved command serialization and execution logic
   • Kept activity logging and sequence state management
   • Retained time source and sequence validation checks
     The fix adjusts the relative time calculation to account for the 1Hz execution rate while ensuring we don't introduce negative timing when dealing with very short delays. This should make the R00:00:0X notation behave as expected, delaying exactly X seconds rather than X+1.