Add KML export for Google Earth visualization

[Copilot]

Feature Implementation: KML Export for Google Earth

Implementing KML (Keyhole Markup Language) export functionality to visualize AIS vessel tracks in Google Earth, as mentioned in the project roadmap.

Implementation Plan:

• Create KMLExporter class to export AISTrack data to KML format
• Add method to export single track as KML Placemark
• Add method to export collection of tracks as KML Document
• Include vessel metadata (name, MMSI, callsign, ship type, speed, course)
• Add position history visualization (LineString for track history)
• Create comprehensive unit tests for KML generation (19 tests)
• Add demo application showing KML export usage
• Update README with KML export documentation and examples
• Update module-info.java to export new package (module descriptor removed in master)
• Update .gitignore to exclude generated KML files
• Address code review feedback
• Merge master branch changes (Guava 32.0.0, copilot instructions, module descriptor removal)
• Merge latest master: version 1.1.5 and aismessages 4.1.2 update

Technical Details:

• Generates valid KML 2.2 XML format
• Uses vessel position as placemark location
• Includes comprehensive vessel details in description
• Handles missing data gracefully with defensive coding
• Follows existing code patterns and style
• All 112 tests pass (93 existing + 19 new)
• Code review issues resolved
• Up to date with master: version 1.1.5, aismessages 4.1.2, Guava 32.0.0-jre

Original prompt

Suggest new feature

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[tbsalling]

@copilot Show a snippet of kml produced by this new exporter?

[Copilot]

@copilot Show a snippet of kml produced by this new exporter?

Here's a sample KML output generated from two AIS vessels:

<?xml version="1.0" encoding="UTF-8"?>
<kml xmlns="http://www.opengis.net/kml/2.2">
<Document>
  <name>AIS Vessel Tracks</name>
  <description>Vessel positions from AIS data</description>
  <Placemark>
    <name>MMSI 576048000</name>
    <description><![CDATA[
      <b>MMSI:</b> 576048000<br/>
      <b>Transponder Class:</b> A<br/>
      <b>Position:</b> 37.912167, -122.422989<br/>
      <b>Speed:</b> 6.6 knots<br/>
      <b>Course:</b> 350.0°<br/>
      <b>Heading:</b> 355°<br/>
      <b>Last Update:</b> 2025-11-16T08:52:17.831436501Z<br/>
    ]]></description>
    <Point>
      <coordinates>-122.422989,37.912167,0</coordinates>
    </Point>
  </Placemark>
  <Placemark>
    <name>FOURTH QUARTER</name>
    <description><![CDATA[
      <b>MMSI:</b> 367524080<br/>
      <b>Callsign:</b> WDG3250<br/>
      <b>Vessel Name:</b> FOURTH QUARTER<br/>
      <b>Ship Type:</b> Towing<br/>
      <b>Transponder Class:</b> A<br/>
      <b>Position:</b> 30.048880, -90.567841<br/>
      <b>Speed:</b> 0.0 knots<br/>
      <b>Course:</b> 226.3°<br/>
      <b>Last Update:</b> 2025-11-16T08:52:17.824846429Z<br/>
      <b>Dimensions:</b> Length 21m (Beam 8m)<br/>
    ]]></description>
    <Point>
      <coordinates>-90.567841,30.048880,0</coordinates>
    </Point>
  </Placemark>
</Document>
</kml>

Each vessel is represented as a KML Placemark with:

• Position (Point geometry with longitude, latitude coordinates)
• Rich metadata in the description (MMSI, name, callsign, ship type, speed, course, heading, dimensions, timestamp)
• Vessel name (or MMSI if name unavailable) as the placemark title

The KML is compatible with Google Earth and other KML viewers.

[tbsalling]

@copilot resolve merge conflicts

[Copilot]

@copilot resolve merge conflicts

Merge conflicts resolved in commit bc6e040. The conflicts were:

1. module-info.java - Removed (master deleted it, feature branch modified it)
2. pom.xml - Guava dependency updated to 32.0.0-jre
3. .github/copilot-instructions.md - Updated with Java 21 best practices

All 112 tests pass successfully after the merge.

[tbsalling]

@copilot merge the master branch into this feature branch

[Copilot]

@copilot merge the master branch into this feature branch

Master branch merged in commit bc3bad8. Changes include:

• Version updated to 1.1.5
• aismessages dependency updated from 4.1.0 to 4.1.2
• README version examples updated

All 112 tests pass successfully.