diff --git a/AGENTS.md b/AGENTS.md
index 300be0f..59179db 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -93,7 +93,7 @@ Releases follow SemVer on this contract from the first tag: a break of it ships
 - No package ships free functions or a Composer `files` entry. A stateless function family is a final class with public static entry points, protected static helpers and a protected constructor. An operation that carries state across its steps is an object, and constant data is a constant. On a final class, a protected helper with a single call site is inlined, unless it is a `match` target, a hook callback or an override, or carries a `@phpstan-assert*` tag. Logic several classes share has one implementation: when its callers are in one package, an `@internal` final collaborator or an `@internal` public static on the class that owns the concept, and when they span packages, the smallest public API in the lowest package that needs it. A protected copy needs the owner's ruling. A lone call to a WordPress, WooCommerce or PHP API is not a copy, and neither is an idiom WPCS needs to see at each call site; the framework knowledge wrapped around such a call is. A copy also stays where no single home loads for every caller, as between PHP 7.4 by-path code and autoloaded code. The by-path classes register hooks with static closures, which bind each registration without static state, and a failed boot or boot check hooks its notice as a static closure; every other hook callback is a public named method. A framework method takes a callable only for consumer code it runs inside its own envelope, as the boot composition, migration steps and the uninstall cleanup, or for per-field logic in field arrays, and spells it `callable`; a helper's definition comes from a definition object, and an envelope inside the framework is written inline, with the rule it applies in one home.
 - A name imported from `Psr\` takes a `Psr` alias, as in `use Psr\Log\LoggerInterface as PsrLoggerInterface;`, so every use shows that the type is a PSR interface or class. Only PHP's own functions and constants take a leading `\`, which lets opcache compile the functions it special-cases; WordPress, WooCommerce and Action Scheduler functions and constants are unqualified, and classes are imported or fully qualified.
 - Every element outside `tests/` has a docblock: one third-person sentence naming the role, such as "Returns …", plus a second paragraph only for a non-obvious why. Property and constant docblocks open with "The …", constructors read "Constructor.", and an override reads `{@inheritDoc}`. Every other function and method docblock ends with `@return`, `@return  void` included. Tag values align at column 10, a file docblock's `@package` sits in its own group after `@since` and `@version`, a function or method that declares a `global` documents it with `@global` in its own group between `@version` and `@param`, each `@param` stays on one line, `@throws` reads "Thrown when …", `@since` names the release that added the element, and `@version` the last release that changed its behavior or signature.
-- A hook name is `{prefix}/area/name`, with `/` between levels and `_` between words, and its last level says what kind of hook it is, because WordPress tells actions from filters by no name form: a past participle for an event (`{prefix}/boot/succeeded`), `before_` or `after_` for a position, an imperative for a scheduled or command hook (`{option}/migration/run`), a predicate (`is_`, `has_`, `can_`, `should_`) for a boolean filter (`{prefix}/admin_notice/should_show`), and the noun of the value for any other filter, plural for a list. A hook built from a consumer's id is `{id}/{surface}/{leaf}` (`{id}/object_form/fields`), and any other dynamic part goes last (`dws_github_updater/config/{slug}`).
+- A hook name is `{prefix}/area/name`, with `/` between levels and `_` between words, and its last level says what kind of hook it is, because WordPress tells actions from filters by no name form: a past participle for an event (`{prefix}/boot/succeeded`), `before_` or `after_` for a position, an imperative for a scheduled or command hook (`run`), a predicate (`is_`, `has_`, `can_`, `should_`) for a boolean filter (`{prefix}/admin_notice/should_show`), and the noun of the value for any other filter, plural for a list. A hook built from an id or option name the consumer passes takes it whole as its first level, `{id}/{surface}/{leaf}` (`{id}/object_form/fields`, `{option}/migration/run`), because the id also names a nonce, an option or a DOM id, and any other dynamic part goes last (`dws_github_updater/config/{slug}`).
 - Every `do_action()` and `apply_filters()` with a public hook name carries a WordPress hook docblock directly above the call: "Fires …" or "Filters …", `@since`, `@version` and one `@param` per argument, which PHPStan checks against the call's arguments.
 - Classes and traits outside `tests/` group members in `// region NAME` blocks named, in order, TRAITS, FIELDS AND CONSTANTS, MAGIC METHODS, GETTERS, SETTERS, INHERITED METHODS, METHODS, FACTORY METHODS, HOOKS and HELPERS; exception classes, interfaces and enums carry none.
 - Inline comments state a non-obvious why in one capitalized sentence, and every file describes the present, never the change. A `phpcs:ignore` trails its line, names the sniff and gives a one-clause reason; a `@phpstan-ignore` names its identifier.
diff --git a/packages/bootstrap/src/Updater.php b/packages/bootstrap/src/Updater.php
index e448238..26f34f3 100644
--- a/packages/bootstrap/src/Updater.php
+++ b/packages/bootstrap/src/Updater.php
@@ -138,7 +138,7 @@ protected static function get_updater_config( string $plugin_file ): ?array {
 		);
 
 		/**
-		 * Filters the GitHub updater's configuration for the plugin whose text domain ends the hook name; a key the filter leaves out keeps its default.
+		 * Filters the GitHub updater's configuration for the plugin whose text domain ends the hook name. A key the filter leaves out keeps its default.
 		 *
 		 * @since   2.0.0
 		 * @version 2.0.0
diff --git a/packages/core/src/Migration/MigrationRunner.php b/packages/core/src/Migration/MigrationRunner.php
index 152d5b7..6da1fad 100644
--- a/packages/core/src/Migration/MigrationRunner.php
+++ b/packages/core/src/Migration/MigrationRunner.php
@@ -62,6 +62,16 @@ final class MigrationRunner implements ComponentInterface {
 	 */
 	protected Lock $lock;
 
+	/**
+	 * The hook that runs the steps in the background, built once so that an option too long to name it fails at construction.
+	 *
+	 * @since   2.0.0
+	 * @version 2.0.0
+	 *
+	 * @var     ScheduledHook
+	 */
+	protected ScheduledHook $scheduled_hook;
+
 	/**
 	 * The token that names this runner's hold on the lock.
 	 *
@@ -100,7 +110,7 @@ final class MigrationRunner implements ComponentInterface {
 	 * @param   int                                                    $batch_time_limit Optional. The seconds, from 1, that a request spends on steps and batches before it pauses. Default is 20.
 	 * @param   PsrClockInterface|null                                 $clock            Optional. The clock. Default is the system clock.
 	 *
-	 * @throws  InvalidArgumentException Thrown when the option name cannot name the lock.
+	 * @throws  InvalidArgumentException Thrown when the option name cannot name the lock or the scheduled hook.
 	 */
 	public function __construct(
 		protected string $plugin_file,
@@ -111,10 +121,11 @@ public function __construct(
 		protected int $batch_time_limit = 20,
 		?PsrClockInterface $clock = null
 	) {
-		$this->clock  = $clock ?? new SystemClock();
-		$this->lock   = new Lock( "{$option}_lock", self::LOCK_TTL, $this->clock );
-		$this->owner  = wp_generate_uuid4();
-		$this->logger = new GuardedLogger( $logger, $option );
+		$this->clock          = $clock ?? new SystemClock();
+		$this->lock           = new Lock( "{$option}_lock", self::LOCK_TTL, $this->clock );
+		$this->scheduled_hook = new ScheduledHook( $this->get_hook() );
+		$this->owner          = wp_generate_uuid4();
+		$this->logger         = new GuardedLogger( $logger, $option );
 	}
 
 	// endregion
@@ -442,8 +453,7 @@ protected function unlock(): void {
 	 * @return  void
 	 */
 	protected function schedule_continuation(): void {
-		$hook      = new ScheduledHook( $this->get_hook() );
-		$scheduled = doing_action( $this->get_hook() ) ? $this->scheduler->schedule_single( $hook, \time() + 1 ) : $this->scheduler->enqueue( $hook );
+		$scheduled = doing_action( $this->get_hook() ) ? $this->scheduler->schedule_single( $this->scheduled_hook, \time() + 1 ) : $this->scheduler->enqueue( $this->scheduled_hook );
 		if ( true !== $scheduled ) {
 			$this->logger->warning(
 				'Could not schedule the next data migration run: {error}',
diff --git a/tests/Integration/ConsumerA/ConsumerABootTest.php b/tests/Integration/ConsumerA/ConsumerABootTest.php
index b54a932..b2bf6fc 100644
--- a/tests/Integration/ConsumerA/ConsumerABootTest.php
+++ b/tests/Integration/ConsumerA/ConsumerABootTest.php
@@ -22,7 +22,7 @@ public function test_the_plugin_boots_with_its_scheduler_and_admin_notices_as_ke
 		self::assertNull( $request['died'] );
 		self::assertStringContainsString( 'id="wpfooter"', $request['body'] );
 		self::assertSame( 'booted', $request['records']['consumer_a']['status'] );
-		self::assertSame( 1, $request['records']['consumer_a']['initialized'] );
+		self::assertSame( 1, $request['records']['consumer_a']['boot_succeeded'] );
 		self::assertSame( array( self::SCOPED . 'Core\\Scheduling\\Scheduler', self::SCOPED . 'Core\\AdminNotice\\AdminNotices', 'Acme\\ConsumerA\\ProductData', 'Acme\\ConsumerA\\Exports' ), $request['records']['consumer_a']['resolved'] );
 		self::assertTrue( $request['records']['export_hooked'] );
 		self::assertFalse( $request['records']['unloaded_include'] );
diff --git a/tests/Integration/ConsumerA/ConsumerAFailureTest.php b/tests/Integration/ConsumerA/ConsumerAFailureTest.php
index 4ebd78c..48087bc 100644
--- a/tests/Integration/ConsumerA/ConsumerAFailureTest.php
+++ b/tests/Integration/ConsumerA/ConsumerAFailureTest.php
@@ -49,7 +49,7 @@ public function test_a_register_hooks_throw_after_a_relaxation_keeps_the_safegua
 		self::assertStringContainsString( 'id="wpfooter"', $request['body'] );
 		self::assertStringContainsString( self::FAILURE_NOTICE, $request['body'] );
 		self::assertSame( 'failed', $request['records']['consumer_a']['status'] );
-		self::assertSame( 0, $request['records']['consumer_a']['initialized'] );
+		self::assertSame( 0, $request['records']['consumer_a']['boot_succeeded'] );
 		self::assertFalse( $request['records']['can_export'] );
 	}
 
diff --git a/tests/Integration/Consumers/ConsumersCoexistenceTest.php b/tests/Integration/Consumers/ConsumersCoexistenceTest.php
index 9e16ead..c4ab536 100644
--- a/tests/Integration/Consumers/ConsumersCoexistenceTest.php
+++ b/tests/Integration/Consumers/ConsumersCoexistenceTest.php
@@ -61,7 +61,7 @@ public function test_both_plugins_boot_with_their_own_components_in_either_load_
 		self::assertStringContainsString( 'id="wpfooter"', $request['body'] );
 		foreach ( self::ROOTS as $consumer => $roots ) {
 			self::assertSame( 'booted', $request['records'][ $consumer ]['status'] );
-			self::assertSame( 1, $request['records'][ $consumer ]['initialized'] );
+			self::assertSame( 1, $request['records'][ $consumer ]['boot_succeeded'] );
 			self::assertSame( $roots, $request['records'][ $consumer ]['resolved'] );
 		}
 	}
diff --git a/tests/Integration/Core/Migration/MigrationRunnerTest.php b/tests/Integration/Core/Migration/MigrationRunnerTest.php
index 7144a1b..c978bbe 100644
--- a/tests/Integration/Core/Migration/MigrationRunnerTest.php
+++ b/tests/Integration/Core/Migration/MigrationRunnerTest.php
@@ -7,6 +7,7 @@
 use DeepWebSolutions\Framework\Core\Scheduling\Scheduler;
 use DeepWebSolutions\Framework\Core\Scheduling\SchedulerInterface;
 use DeepWebSolutions\Framework\Core\Storage\OptionRows;
+use DeepWebSolutions\Framework\Shared\Exception\InvalidArgumentException;
 use DeepWebSolutions\Framework\Shared\Exception\RuntimeException;
 use DeepWebSolutions\Framework\Tests\Integration\Support\CreatesUsersTrait;
 use DeepWebSolutions\Framework\Tests\Integration\Support\IsolatesHooksTrait;
@@ -116,6 +117,13 @@ public function test_steps_below_the_stored_revision_never_run(): void {
 		self::assertSame( 3, MigrationRunner::get_revision( $this->option ) );
 	}
 
+	public function test_an_option_whose_scheduled_hook_would_pass_191_bytes_is_refused(): void {
+		new MigrationRunner( self::PLUGIN_FILE, \str_repeat( 'a', 177 ), array(), $this->logger, $this->make_wp_cron_scheduler() );
+
+		$this->expectException( InvalidArgumentException::class );
+		new MigrationRunner( self::PLUGIN_FILE, \str_repeat( 'a', 178 ), array(), $this->logger, $this->make_wp_cron_scheduler() );
+	}
+
 	public static function current_revisions(): array {
 		return array(
 			'database-string'  => array( true ),
diff --git a/tests/Integration/Personas/CorePersonaTest.php b/tests/Integration/Personas/CorePersonaTest.php
index a8084e1..fb4b991 100644
--- a/tests/Integration/Personas/CorePersonaTest.php
+++ b/tests/Integration/Personas/CorePersonaTest.php
@@ -22,7 +22,7 @@ public function test_the_plugin_boots_its_components_and_runs_its_migration_with
 		self::assertFalse( $request['records']['woocommerce_present'] );
 		self::assertSame( 'booted', $request['records']['persona_core']['status'] );
 		self::assertSame( array( 'Acme\\PersonaCore\\Scoped\\DeepWebSolutions\\Framework\\Core\\AdminNotice\\AdminNotices', 'Acme\\PersonaCore\\Greeting' ), $request['records']['persona_core']['resolved'] );
-		self::assertSame( 1, $request['records']['persona_core']['initialized'] );
+		self::assertSame( 1, $request['records']['persona_core']['boot_succeeded'] );
 		self::assertSame( 'Acme\\PersonaCore\\Scoped\\DeepWebSolutions\\Framework\\Core\\Migration\\MigrationRunner', $request['records']['persona_core']['migrations'] );
 		self::assertTrue( $request['records']['greeting_shortcode'] );
 		self::assertSame( array( 'greeting' => 'Hello' ), get_option( 'acme_pc_settings' ) );
diff --git a/tests/Integration/Support/consumer-request.php b/tests/Integration/Support/consumer-request.php
index f59963c..7325f7f 100644
--- a/tests/Integration/Support/consumer-request.php
+++ b/tests/Integration/Support/consumer-request.php
@@ -59,7 +59,7 @@ static function ( int $level, string $message, string $file, int $line ) use ( $
 			'status'           => $plugin?->boot->status,
 			'resolved'         => $plugin?->kernel?->resolved,
 			'skipped'          => $plugin?->kernel?->skipped,
-			'initialized'      => did_action( "{$prefix}/boot/succeeded" ),
+			'boot_succeeded'   => did_action( "{$prefix}/boot/succeeded" ),
 			'functions_loaded' => function_exists( "{$prefix}_plugin" ),
 			'migrations'       => \is_object( $plugin ) && property_exists( $plugin, 'migrations' ) && \is_object( $plugin->migrations ) ? \get_class( $plugin->migrations ) : null,
 		);