diff --git a/README.md b/README.md
index 0dba242..b08a2b6 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,7 @@
 
 A Mapbox-backed WordPress map block. Markers are child blocks holding a coordinate pair plus arbitrary content, revealed either as a carousel of slides beside/below the map or as popup cards inside it.
 
-Extracted and generalized from the map functionality we built for the Wikimedia Foundation's digital-first annual reports.
+Extracted and generalized from the map functionality built for the Wikimedia Foundation's [digital-first annual reports plugin](https://github.com/wikimedia/wikimedia-wordpress-annual-report-plugin/).
 
 ## Features
 
@@ -41,19 +41,6 @@ The blocks work out of the box, but visual design is intentionally left to the i
 - **JS events**: the block wrapper dispatches `hm-map:ready` (detail: `{ map }`) and `hm-map:pin-activate` (detail: `{ index }`) CustomEvents for site code to hook into.
 - **Content Security Policy**: if your site sends a CSP, allow `https://api.mapbox.com` in `script-src`/`style-src`, `https://api.mapbox.com https://events.mapbox.com` in `connect-src`, and `blob:` in `worker-src` (Mapbox GL uses web workers).
 
-## Migrating from the annual report plugin
-
-Content authored with `wmf-reports/map` and `wmf-reports/marker` keeps rendering on the frontend: the legacy block names are registered against the current render templates (editor support is not provided for the legacy names).
-
-To migrate stored content to the new format, run:
-
-```
-wp hm-map migrate --dry-run   # report what would change
-wp hm-map migrate             # rewrite block names, slide classes, and copy the API key option
-```
-
-The command rewrites the block delimiters, renames the `wmf-pattern-reports-carousel-slide` class to `hm-map-slide`, and copies the `wmf-map-api-key` option to `hm_map_api_key` if unset. `wmf-reports/overlay` blocks (a separate feature of the source plugin) are left untouched. Note the default map style is now Mapbox Light rather than Wikimedia's custom style; set a Custom style URI on migrated maps if the old look is required.
-
 ## Development
 
 ### Build commands
diff --git a/inc/assets.php b/inc/assets.php
index fb67dfd..832f6fe 100644
--- a/inc/assets.php
+++ b/inc/assets.php
@@ -23,7 +23,6 @@ function bootstrap(): void {
 	// Enqueue frontend assets when a map actually renders: has_block() based
 	// checks miss archive and home views which render many posts.
 	add_filter( 'render_block_hm/map', __NAMESPACE__ . '\\enqueue_frontend_assets', 10, 2 );
-	add_filter( 'render_block_wmf-reports/map', __NAMESPACE__ . '\\enqueue_frontend_assets', 10, 2 );
 }
 
 /**
@@ -80,8 +79,8 @@ function enqueue_editor_mapbox_styles(): void {
 /**
  * Enqueue Mapbox styles and localize the API key when a map block renders.
  *
- * Runs on the render_block filter for both current and legacy block names,
- * which fires before footer scripts print regardless of the query type.
+ * Runs on the render_block filter, which fires before footer scripts print
+ * regardless of the query type.
  *
  * @param string $block_content Rendered block markup.
  * @param array  $block         Parsed block, including attributes.
diff --git a/inc/cli.php b/inc/cli.php
deleted file mode 100644
index cf4732b..0000000
--- a/inc/cli.php
+++ /dev/null
@@ -1,110 +0,0 @@
-<?php
-/**
- * WP-CLI command migrating wmf-reports map content to the hm block names.
- */
-
-declare( strict_types=1 );
-
-namespace HM\MapBlock\CLI;
-
-use WP_CLI;
-use WP_Query;
-
-const LEGACY_OPTION_KEY = 'wmf-map-api-key';
-
-/**
- * Attach hooks.
- */
-function bootstrap(): void {
-	if ( defined( 'WP_CLI' ) && WP_CLI ) {
-		WP_CLI::add_command( 'hm-map migrate', __NAMESPACE__ . '\\migrate' );
-	}
-}
-
-/**
- * Migrate wmf-reports map blocks to the hm-map-block format.
- *
- * Rewrites block names (wmf-reports/map, wmf-reports/marker) and the carousel
- * slide pattern class names in post content, and copies the legacy API key
- * option if the new one is unset.
- *
- * ## OPTIONS
- *
- * [--dry-run]
- * : Report what would change without updating anything.
- *
- * ## EXAMPLES
- *
- *     wp hm-map migrate --dry-run
- *     wp hm-map migrate
- *
- * @param array $args       Positional arguments (unused).
- * @param array $assoc_args Named arguments.
- */
-function migrate( array $args, array $assoc_args ): void {
-	$dry_run = ! empty( $assoc_args['dry-run'] );
-
-	$replacements = [
-		// Block comment delimiters. "map" is not a prefix of "marker", so
-		// these replacements cannot corrupt each other.
-		'<!-- wp:wmf-reports/map '      => '<!-- wp:hm/map ',
-		'<!-- wp:wmf-reports/map -->'   => '<!-- wp:hm/map -->',
-		'<!-- /wp:wmf-reports/map -->'  => '<!-- /wp:hm/map -->',
-		'<!-- wp:wmf-reports/marker '   => '<!-- wp:hm/map-marker ',
-		'<!-- wp:wmf-reports/marker -->' => '<!-- wp:hm/map-marker -->',
-		'<!-- /wp:wmf-reports/marker -->' => '<!-- /wp:hm/map-marker -->',
-		// Pattern-era class names referenced by the plugin styles.
-		'wmf-pattern-reports-carousel-slide' => 'hm-map-slide',
-	];
-
-	$query = new WP_Query( [
-		'post_type'      => 'any',
-		'post_status'    => 'any',
-		'posts_per_page' => -1,
-		'fields'         => 'ids',
-		's'              => 'wp:wmf-reports/map',
-	] );
-
-	$updated = 0;
-	foreach ( $query->posts as $post_id ) {
-		$content  = get_post_field( 'post_content', $post_id );
-		$migrated = str_replace(
-			array_keys( $replacements ),
-			array_values( $replacements ),
-			$content
-		);
-
-		if ( $migrated === $content ) {
-			continue;
-		}
-
-		++$updated;
-		if ( $dry_run ) {
-			WP_CLI::log( sprintf( 'Would migrate post %d (%s).', $post_id, get_the_title( $post_id ) ) );
-			continue;
-		}
-
-		wp_update_post( [
-			'ID'           => $post_id,
-			'post_content' => wp_slash( $migrated ),
-		] );
-		WP_CLI::log( sprintf( 'Migrated post %d (%s).', $post_id, get_the_title( $post_id ) ) );
-	}
-
-	// Copy the legacy API key option unless a new key is already stored.
-	$legacy_key = get_option( LEGACY_OPTION_KEY, '' );
-	if ( ! empty( $legacy_key ) && empty( get_option( \HM\MapBlock\Settings\MAP_API_OPTION_KEY, '' ) ) ) {
-		if ( $dry_run ) {
-			WP_CLI::log( 'Would copy the legacy API key option to ' . \HM\MapBlock\Settings\MAP_API_OPTION_KEY . '.' );
-		} else {
-			update_option( \HM\MapBlock\Settings\MAP_API_OPTION_KEY, $legacy_key );
-			WP_CLI::log( 'Copied the legacy API key option to ' . \HM\MapBlock\Settings\MAP_API_OPTION_KEY . '.' );
-		}
-	}
-
-	WP_CLI::success(
-		$dry_run
-			? sprintf( '%d posts would be migrated.', $updated )
-			: sprintf( '%d posts migrated.', $updated )
-	);
-}
diff --git a/inc/compat.php b/inc/compat.php
deleted file mode 100644
index 58bd64b..0000000
--- a/inc/compat.php
+++ /dev/null
@@ -1,90 +0,0 @@
-<?php
-/**
- * Backwards compatibility with the wmf-reports block names.
- *
- * The map and marker blocks originated in the Wikimedia annual report plugin
- * as wmf-reports/map and wmf-reports/marker. Content authored in that format
- * keeps rendering when this plugin replaces that one: the legacy names are
- * registered server-side against the same render templates. This is a
- * frontend-only bridge — in the editor the legacy blocks appear unavailable —
- * so migrate stored content with `wp hm-map migrate` (see inc/cli.php).
- */
-
-declare( strict_types=1 );
-
-namespace HM\MapBlock\Compat;
-
-use WP_Block;
-
-/**
- * Attach hooks.
- */
-function bootstrap(): void {
-	add_action( 'init', __NAMESPACE__ . '\\register_legacy_blocks', 20 );
-}
-
-/**
- * Render a block template file in the same manner as block.json render files.
- *
- * @param string   $template   Absolute path to the render template.
- * @param array    $attributes Block attributes.
- * @param string   $content    Block inner content.
- * @param WP_Block $block      Block instance.
- * @return string Rendered block markup.
- */
-function render_template( string $template, array $attributes, string $content, WP_Block $block ): string {
-	ob_start();
-	require $template;
-	return (string) ob_get_clean();
-}
-
-/**
- * Register the legacy wmf-reports block names against the current templates.
- *
- * Runs after the primary blocks register so we can copy their attribute
- * definitions (needed for the render callback to receive attribute values).
- */
-function register_legacy_blocks(): void {
-	$registry = \WP_Block_Type_Registry::get_instance();
-
-	$legacy_map = [
-		'wmf-reports/map'    => [ 'hm/map', 'map/render.php' ],
-		'wmf-reports/marker' => [ 'hm/map-marker', 'marker/render.php' ],
-	];
-
-	foreach ( $legacy_map as $legacy_name => [ $current_name, $render_file ] ) {
-		$current = $registry->get_registered( $current_name );
-		if ( ! $current || $registry->is_registered( $legacy_name ) ) {
-			continue;
-		}
-
-		$template = \HM\MapBlock\PLUGIN_PATH . '/build/blocks/' . $render_file;
-
-		register_block_type( $legacy_name, [
-			'attributes'      => $current->attributes,
-			// Reuse the current blocks' frontend assets.
-			'view_script_handles' => $current->view_script_handles,
-			'style_handles'       => $current->style_handles,
-			'render_callback' => function ( array $attributes, string $content, WP_Block $block ) use ( $template ): string {
-				$html = render_template( $template, $attributes, $content, $block );
-
-				// The generated wrapper class follows the legacy block name;
-				// add the current classes so plugin styles and scripts match.
-				// Lookbehinds keep this idempotent when the map block
-				// re-processes marker markup already handled by the marker's
-				// own callback. Marker first: the map class is a prefix of
-				// the marker class.
-				$html = preg_replace(
-					'/(?<!wp-block-hm-map-marker )wp-block-wmf-reports-marker/',
-					'wp-block-hm-map-marker wp-block-wmf-reports-marker',
-					$html
-				);
-				return preg_replace(
-					'/(?<!wp-block-hm-map )wp-block-wmf-reports-map(?!-)/',
-					'wp-block-hm-map wp-block-wmf-reports-map',
-					$html
-				);
-			},
-		] );
-	}
-}
diff --git a/inc/namespace.php b/inc/namespace.php
index 69877ce..384d4bb 100644
--- a/inc/namespace.php
+++ b/inc/namespace.php
@@ -13,8 +13,6 @@ function bootstrap(): void {
 
 	Assets\bootstrap();
 	Settings\bootstrap();
-	Compat\bootstrap();
-	CLI\bootstrap();
 }
 
 /**
diff --git a/plugin.php b/plugin.php
index 1ab1032..f47d4c3 100644
--- a/plugin.php
+++ b/plugin.php
@@ -26,7 +26,5 @@
 require_once __DIR__ . '/inc/namespace.php';
 require_once __DIR__ . '/inc/assets.php';
 require_once __DIR__ . '/inc/settings.php';
-require_once __DIR__ . '/inc/compat.php';
-require_once __DIR__ . '/inc/cli.php';
 
 bootstrap();