Goldbach Time Indicator

🔧 Key Fixes Applied:
1. Time Validation & Bounds Checking:

Hour/Minute Bounds: Ensures hours stay 0-23, minutes stay 0-59
Edge Case Handling: Prevents invalid time calculations from causing missing data
UTC Conversion Safety: Better handling of timezone edge cases

2. Enhanced Value Validation:

NA Checking: Validates all calculated values before using them
Goldbach Detection: Only flags valid, non-NA values as Goldbach hits
Plot Safety: Prevents plotting invalid or NA values that could cause gaps

3. Improved Plot Logic:

Core Level Colors: Blue for core levels (29,35,71,77), yellow/lime/orange for regular hits
Debug Mode Enhanced: Shows all calculations with gray dots when enabled
Better Filtering: Only plots positive, valid values for minus calculations

4. Background vs Dots Issue:
The large green/blue background you see suggests the indicator is detecting Goldbach times correctly, but the dots weren't plotting due to validation issues. This should now be fixed.