Enable snapping by default

[giswqs]

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Pull Request Overview

This PR enables snapping by default in the Geoman draw control and updates the documentation to reflect this change. Snapping helps users create precise geometries by snapping to existing features when drawing on the map.

• Enables snapping by default in the add_geoman_control method
• Updates the Jupyter notebook example to document the default snapping behavior and show how to disable it
• Removes commented-out configuration example and replaces it with a clearer custom configuration section

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
anymap/maplibre.py	Adds logic to enable snapping by default in the Geoman control configuration
docs/examples/maplibre_geoman.ipynb	Documents the new snapping default behavior and provides an example of how to disable it

Comments suppressed due to low confidence (1)

anymap/maplibre.py:1752

• The snapping default is set before user-provided controls are processed, but the controls parameter uses .update() which can override nested values. If a user passes controls={\"helper\": {\"snapping\": {}}}, the empty dict will override the default {\"active\": True}, resulting in snapping being disabled when it should be enabled by default. Consider checking for the active key after merging user controls, or use a deep merge strategy that preserves the default when not explicitly overridden.

        # Enable snapping by default
        geoman_controls = geoman_config.setdefault("controls", {})
        helper_controls = geoman_controls.setdefault("helper", {})
        snapping_config = helper_controls.setdefault("snapping", {})
        if "active" not in snapping_config:
            snapping_config["active"] = True

        if controls:
            for section, section_options in controls.items():
                if isinstance(section_options, dict):
                    section_config = geoman_controls.setdefault(section, {})
                    section_config.update(section_options)

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