Upgrade to maplibre 6.0

[digitaltom]

No description provided.

[Copilot]

Pull request overview

Upgrades the app’s MapLibre integration to MapLibre GL JS 6.0, updating vendored ESM assets and adapting the app code/config to MapLibre 6’s module/worker and missing-image APIs.

Changes:

• Vendor MapLibre 6 worker chunk (maplibre-gl-worker.mjs) and switch to the official @maplibre/maplibre-gl-geocoder ESM build.
• Update Rails asset handling for .mjs (Sprockets MIME registration) and loosen CSP to allow blob: images.
• Update JS imports and MapLibre hooks (namespace import for maplibre-gl, switch to setMissingStyleImageResolver).

Reviewed changes

Copilot reviewed 8 out of 14 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
vendor/javascript/maplibre-gl-worker.mjs	Adds the MapLibre 6 split-out worker module needed by the new ESM build.
vendor/javascript/maplibre-gl-geocoder.js	Removes the previously vendored geocoder bundle in favor of the scoped package build.
vendor/javascript/@maplibre--maplibre-gl-geocoder.js	Adds vendored @maplibre/maplibre-gl-geocoder ESM distribution.
vendor/javascript/@maplibre--maplibre-gl-directions.js	Updates vendored directions file header comment for provenance/version.
config/initializers/mime_types.rb	Ensures Sprockets serves .mjs with the correct JavaScript MIME type.
config/initializers/content_security_policy.rb	Allows blob: in img-src to support MapLibre-related runtime URLs.
config/importmap.rb	Updates pins/comments for MapLibre 6 and switches geocoder pin to scoped package file.
app/javascript/maplibre/styles/styles.js	Updates missing-image loader callback signature and related caching keys.
app/javascript/maplibre/map.js	Uses MapLibre 6 API (setMissingStyleImageResolver) and switches to namespace import.
app/javascript/maplibre/controls/shared.js	Switches geocoder import to scoped package and simplifies proximity config.
app/javascript/maplibre/controls/geolocate.js	Switches MapLibre import to namespace form compatible with ESM build.
app/javascript/deck.js	Switches MapLibre import to namespace form compatible with ESM build.

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