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Simple path planner to generate approach path from mower start position to planned path start.
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Generate approach path from mower start to planned path start.
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Args:
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start_pos: (x, y) mower starting position
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start_heading: mower starting heading in radians
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target_pos: (x, y) planned path starting position
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target_heading: planned path starting heading in radians
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method: 'line' | 'dubins' | 'smooth'
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Returns:
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List of (x, y) waypoints forming the approach path
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Combine approach path and work path into single path with metadata.
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Returns:
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combined_path: List of (x, y) waypoints
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approach_end_idx: Index where approach path ends (work path starts)
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