[Josef-Haupt]

• No crash when an analysis has zero detections (all result types).
• Kaleidoscope output now uses Kaleidoscope's layout: INDIR, FOLDER, IN FILE, OFFSET, DURATION, TOP1MATCH, TOP1DIST. The names live in config.KALEIDOSCOPE_COLUMNS. segments reads these files and 2.x ones.
  Format change: the scientific name and the 2.x extra columns are gone.
• segments reads quoted fields containing commas, e.g. the 3.0 label "Whales, Dolphins and Porpoises".
• --split_tables writes inside the output folder for relative and linked inputs.
• Latitude/longitude 0 survive a params-file reload.
• Labels without _ (Perch) keep their name.
• The --additional_columns warning is shown again, with corrected text.

[Copilot]

🟢 Approval recommended

Static review identified no blocking issues, and regression tests cover the corrected behaviors; tests were not executed.

No open issues 🎉

What changed in this PR

Fixes analysis output handling and improves compatibility between result writers and segment extraction.

Changes:

• Handles empty detections, split-output paths, and zero-valued coordinates.
• Standardizes Kaleidoscope output while preserving legacy parsing and quoted CSV fields.
• Improves CLI warnings and adds regression tests.

File	Description
tests/​segments/​test_segments.py	Tests legacy Kaleidoscope compatibility.
tests/​analyze/​test_writers.py	Tests empty outputs and writer/parser compatibility.
tests/​analyze/​test_analyze.py	Tests output paths, saved coordinates, and warnings.
birdnet_analyzer/​segments/​utils.py	Parses current and legacy Kaleidoscope formats and quoted CSV fields.
birdnet_analyzer/​config.py	Defines shared Kaleidoscope columns.
birdnet_analyzer/​analyze/​core.py	Fixes output paths, empty results, species labels, and coordinate persistence.
birdnet_analyzer/​analyze/​cli.py	Logs a corrected additional-columns warning.

_{Review effort: Balanced}