[senanurcetin]

Summary

Addresses #1945.

Add the opt-in show_path=False setting to TimestampedGeoJson to animate moving last-point markers without drawing LineString paths in every animation frame. The default show_path=True preserves existing behavior.

Previously, Leaflet.TimeDimension could recreate polylines at every frame. Without explicit styling, these could appear as unwanted blue lines.

Changes

• Add show_path: bool = True, preserving the existing default.
• In marker-only mode, exclude LineString paths from time-dimension frame-layer rendering while retaining the original source features for timestamps and marker positions.
• Keep animated last-point markers available with add_last_point=True.
• Add regression tests for the marker-only option and the default behavior.

Changed files:

• folium/plugins/timestamped_geo_json.py
• tests/plugins/test_timestamped_geo_json.py

Verification reported for the contributor branch

• Relevant Folium plugin and map tests: 23 passed locally on Windows.
• Ruff lint and git diff --check: passed locally.
• Leaflet.TimeDimension 1.1.1 update logic was exercised against the issue's dataset.

Observed behavior	Default	show_path=False
Animated LineString paths	175	0
Moving markers	115	115
Original source tracks retained	175	175

These are previously reported functional checks, not an independent current-head CI result or an FPS/CPU benchmark. Skipping per-frame polyline construction does not itself establish measured rendering-performance gains.

Scope and limitations

This PR changes only the Folium plugin and its tests. It does not change how source track features are indexed. Browser frame rate, CPU usage and full upstream CI have not been verified in this description.

AI assistance

AI assistance was used for investigation, implementation and regression-test development. Maintainer review remains welcome.