diff --git a/inc/Workspace/WorktreeContextInjector.php b/inc/Workspace/WorktreeContextInjector.php
index 29994ee..6626554 100644
--- a/inc/Workspace/WorktreeContextInjector.php
+++ b/inc/Workspace/WorktreeContextInjector.php
@@ -349,9 +349,6 @@ public static function find_duplicate_task_ownership( array $worktrees ): array
 		$buckets = array();
 
 		foreach ( $worktrees as $row ) {
-			if ( ! is_array( $row ) ) {
-				continue;
-			}
 			$handle = (string) ( $row['handle'] ?? '' );
 			if ( '' === $handle ) {
 				continue;
@@ -369,7 +366,7 @@ public static function find_duplicate_task_ownership( array $worktrees ): array
 
 		$duplicates = array();
 		foreach ( $buckets as $bucket ) {
-			$handles = array_values( array_unique( (array) ( $bucket['handles'] ?? array() ) ) );
+			$handles = array_values( array_unique( $bucket['handles'] ) );
 			if ( count( $handles ) < 2 ) {
 				continue;
 			}
@@ -510,14 +507,14 @@ private static function resolve_primary_id( array $session, array $ids ): ?strin
 
 		// Pass 1: session_id across registered runtimes, in registration order.
 		foreach ( array_keys( $signatures ) as $runtime_id ) {
-			if ( isset( $ids[ $runtime_id ]['session_id'] ) && null !== $ids[ $runtime_id ]['session_id'] ) {
+			if ( isset( $ids[ $runtime_id ]['session_id'] ) ) {
 				return $ids[ $runtime_id ]['session_id'];
 			}
 		}
 
 		// Pass 2: any subkey across registered runtimes, in registration order.
 		foreach ( array_keys( $signatures ) as $runtime_id ) {
-			if ( ! isset( $ids[ $runtime_id ] ) || ! is_array( $ids[ $runtime_id ] ) ) {
+			if ( ! isset( $ids[ $runtime_id ] ) ) {
 				continue;
 			}
 			foreach ( $ids[ $runtime_id ] as $value ) {
@@ -592,7 +589,7 @@ private static function migrate_legacy_origin_session( array $session ): array {
 			'ids'        => true,
 		);
 		foreach ( $session as $key => $value ) {
-			if ( ! is_string( $key ) || isset( $canonical_top_level[ $key ] ) ) {
+			if ( isset( $canonical_top_level[ $key ] ) ) {
 				continue;
 			}
 			$underscore = strpos( $key, '_' );
@@ -601,9 +598,6 @@ private static function migrate_legacy_origin_session( array $session ): array {
 			}
 			$runtime_id = substr( $key, 0, $underscore );
 			$subkey     = substr( $key, $underscore + 1 );
-			if ( '' === $runtime_id || '' === $subkey ) {
-				continue;
-			}
 			if ( ! isset( $ids[ $runtime_id ] ) || ! is_array( $ids[ $runtime_id ] ) ) {
 				$ids[ $runtime_id ] = array();
 			}
@@ -840,12 +834,23 @@ public static function build_payload(): ?array {
 		$user_id    = $dm->get_effective_user_id( 0 );
 		$agent_slug = $dm->resolve_agent_slug( array( 'user_id' => $user_id ) );
 
-		$files = array();
+		$files        = array();
+		$memory_class = '\\DataMachine\\Core\\FilesRepository\\AgentMemory';
 		foreach ( self::MEMORY_FILES as $filename ) {
-			$memory = new \DataMachine\Core\FilesRepository\AgentMemory( $user_id, 0, $filename );
-			$result = $memory->get_all();
-			if ( ! empty( $result['success'] ) && is_string( $result['content'] ?? null ) && '' !== trim( $result['content'] ) ) {
-				$files[ $filename ] = $result['content'];
+			$memory  = new $memory_class( $user_id, 0, $filename );
+			$content = null;
+			if ( is_callable( array( $memory, 'get_all' ) ) ) {
+				$result  = call_user_func( array( $memory, 'get_all' ) );
+				$content = is_array( $result ) && ! empty( $result['success'] ) && is_string( $result['content'] ?? null ) ? $result['content'] : null;
+			} elseif ( is_callable( array( $memory, 'get_file_path' ) ) ) {
+				$file_path = call_user_func( array( $memory, 'get_file_path' ) );
+				if ( is_string( $file_path ) && is_readable( $file_path ) ) {
+					$content = file_get_contents( $file_path ); // phpcs:ignore WordPress.WP.AlternativeFunctions.file_get_contents_file_get_contents -- AgentMemory returns a validated local file path, not a remote URL.
+				}
+			}
+
+			if ( is_string( $content ) && '' !== trim( $content ) ) {
+				$files[ $filename ] = $content;
 			}
 		}
 
@@ -1029,12 +1034,10 @@ public static function inject( string $worktree_path, array $payload ): array|\W
 		if ( is_wp_error( $agents_projection ) ) {
 			return $agents_projection;
 		}
-		if ( is_array( $agents_projection ) ) {
-			$written = array_merge( $written, $agents_projection );
-		}
+		$written = array_merge( $written, $agents_projection );
 
 		$exclude_entries = self::INJECTED_PATHS;
-		if ( is_array( $agents_projection ) && ! empty( $agents_projection ) ) {
+		if ( ! empty( $agents_projection ) ) {
 			$exclude_entries[] = self::PROJECTED_AGENTS_PATH;
 			$exclude_entries[] = self::PROJECTED_AGENTS_MARKER_PATH;
 			$exclude_entries[] = self::PROJECTED_OPENCODE_CONFIG_PATH;
@@ -1065,7 +1068,7 @@ public static function inject( string $worktree_path, array $payload ): array|\W
 	 */
 	private static function project_site_agents_md( string $worktree_path, array $payload ): array|\WP_Error {
 		$source = isset( $payload['agents_md_path'] ) ? (string) $payload['agents_md_path'] : '';
-		if ( '' === $source || ! is_file( $source ) ) {
+		if ( '' === $source || ( ! is_file( $source ) && self::can_symlink_site_agents_md( $source ) ) ) {
 			return array();
 		}
 
@@ -1087,17 +1090,30 @@ private static function project_site_agents_md( string $worktree_path, array $pa
 			}
 		}
 
-		// phpcs:ignore WordPress.WP.AlternativeFunctions.symlink_symlink -- Local checkout projection to a DMC-owned generated file.
-		if ( ! symlink( $source, $target ) ) {
-			return new \WP_Error(
-				'agents_md_projection_failed',
-				sprintf( 'Failed to symlink site AGENTS.md into worktree: %s', $target ),
-				array( 'status' => 500 )
-			);
+		$projection_kind = 'symlink';
+		if ( self::can_symlink_site_agents_md( $source ) ) {
+			// phpcs:ignore WordPress.WP.AlternativeFunctions.symlink_symlink -- Local checkout projection to a DMC-owned generated file.
+			if ( ! symlink( $source, $target ) ) {
+				return new \WP_Error(
+					'agents_md_projection_failed',
+					sprintf( 'Failed to symlink site AGENTS.md into worktree: %s', $target ),
+					array( 'status' => 500 )
+				);
+			}
+		} else {
+			$projection_kind = 'inline';
+			// phpcs:ignore WordPress.WP.AlternativeFunctions.file_system_operations_file_put_contents
+			if ( false === file_put_contents( $target, self::render( $payload ) ) ) {
+				return new \WP_Error(
+					'agents_md_projection_failed',
+					sprintf( 'Failed to write inline site AGENTS.md into worktree: %s', $target ),
+					array( 'status' => 500 )
+				);
+			}
 		}
 
 		// phpcs:ignore WordPress.WP.AlternativeFunctions.file_system_operations_file_put_contents
-		if ( false === file_put_contents( $marker, $source . "\n" ) ) {
+		if ( false === file_put_contents( $marker, $projection_kind . "\n" . $source . "\n" ) ) {
 			// phpcs:ignore WordPress.WP.AlternativeFunctions.unlink_unlink -- Roll back the symlink if the ownership marker cannot be written.
 			unlink( $target );
 			return new \WP_Error(
@@ -1110,6 +1126,20 @@ private static function project_site_agents_md( string $worktree_path, array $pa
 		return array( $target, $marker );
 	}
 
+	/**
+	 * Determine whether the site AGENTS.md path can safely be symlinked into a host checkout.
+	 *
+	 * Studio's WP-CLI runtime exposes the mounted WordPress tree as `/wordpress` inside
+	 * PHP-WASM. Symlinking that virtual path into `/Users/.../Developer` creates a
+	 * broken host symlink and can crash the Studio CLI while syncing filesystem state.
+	 *
+	 * @param string $source Absolute AGENTS.md source path as seen by PHP.
+	 * @return bool Whether a host-visible symlink should be used.
+	 */
+	private static function can_symlink_site_agents_md( string $source ): bool {
+		return ! str_starts_with( $source, '/wordpress/' );
+	}
+
 	/**
 	 * Add the site AGENTS.md to a local OpenCode instructions array.
 	 *
@@ -1124,8 +1154,8 @@ private static function project_site_agents_md_via_opencode_config( string $work
 
 		$config_exists = is_file( $config );
 		// phpcs:ignore WordPress.WP.AlternativeFunctions.file_get_contents_file_get_contents -- Path is a marker file within a controlled worktree.
-		$previous      = $config_exists ? (string) file_get_contents( $config ) : '';
-		$data          = array(
+		$previous = $config_exists ? (string) file_get_contents( $config ) : '';
+		$data     = array(
 			'$schema'      => 'https://opencode.ai/config.json',
 			'instructions' => array(),
 		);
@@ -1205,7 +1235,15 @@ public static function uninject( string $worktree_path ): array {
 		$projected_agents  = rtrim( $worktree_path, '/' ) . '/' . self::PROJECTED_AGENTS_PATH;
 		$projection_marker = rtrim( $worktree_path, '/' ) . '/' . self::PROJECTED_AGENTS_MARKER_PATH;
 		// phpcs:ignore WordPress.WP.AlternativeFunctions.file_get_contents_file_get_contents -- Path is a marker file within a controlled worktree.
-		$marked_source     = is_file( $projection_marker ) ? trim( (string) file_get_contents( $projection_marker ) ) : '';
+		$marked_source   = '';
+		$projection_kind = 'symlink';
+		if ( is_file( $projection_marker ) ) {
+			// phpcs:ignore WordPress.WP.AlternativeFunctions.file_get_contents_file_get_contents -- Path is a marker file within a controlled worktree.
+			$marker_lines    = preg_split( '/\r\n|\r|\n/', trim( (string) file_get_contents( $projection_marker ) ) );
+			$marker_lines    = false === $marker_lines ? array() : $marker_lines;
+			$projection_kind = in_array( $marker_lines[0] ?? '', array( 'symlink', 'inline' ), true ) ? (string) $marker_lines[0] : 'symlink';
+			$marked_source   = 'symlink' === $projection_kind && isset( $marker_lines[1] ) ? (string) $marker_lines[1] : (string) ( $marker_lines[0] ?? '' );
+		}
 		if (
 			is_link( $projected_agents ) &&
 			'' !== $marked_source &&
@@ -1214,6 +1252,10 @@ public static function uninject( string $worktree_path ): array {
 			// phpcs:ignore WordPress.WP.AlternativeFunctions.unlink_unlink -- Removes DMC-injected local-only context symlink from a worktree.
 			unlink( $projected_agents );
 			$removed[] = $projected_agents;
+		} elseif ( 'inline' === $projection_kind && is_file( $projected_agents ) ) {
+			// phpcs:ignore WordPress.WP.AlternativeFunctions.unlink_unlink -- Removes DMC-injected local-only inline context from a worktree.
+			unlink( $projected_agents );
+			$removed[] = $projected_agents;
 		}
 		if ( is_file( $projection_marker ) ) {
 			// phpcs:ignore WordPress.WP.AlternativeFunctions.unlink_unlink -- Removes DMC-injected local-only projection marker from a worktree.
@@ -1343,8 +1385,8 @@ private static function resolve_origin_agent(): ?string {
 
 		try {
 			$dm         = new \DataMachine\Core\FilesRepository\DirectoryManager();
-			$user_id    = method_exists( $dm, 'get_effective_user_id' ) ? $dm->get_effective_user_id( 0 ) : 0;
-			$agent_slug = method_exists( $dm, 'resolve_agent_slug' ) ? $dm->resolve_agent_slug( array( 'user_id' => $user_id ) ) : '';
+			$user_id    = $dm->get_effective_user_id( 0 );
+			$agent_slug = $dm->resolve_agent_slug( array( 'user_id' => $user_id ) );
 			return '' !== (string) $agent_slug ? (string) $agent_slug : null;
 		} catch ( \Throwable $e ) {
 			return null;
diff --git a/tests/smoke-worktree-context-injection.php b/tests/smoke-worktree-context-injection.php
index fd29326..0f3dfbc 100644
--- a/tests/smoke-worktree-context-injection.php
+++ b/tests/smoke-worktree-context-injection.php
@@ -117,12 +117,15 @@ function datamachine_code_pos( string $haystack, string $needle, string $label )
 $site_root       = $tmp_root . '/site';
 $worktree_root   = $tmp_root . '/worktree';
 $existing_root   = $tmp_root . '/existing-worktree';
+$virtual_root    = $tmp_root . '/virtual-worktree';
 $source_agents   = $site_root . '/AGENTS.md';
 $worktree_agents = $worktree_root . '/AGENTS.md';
+$virtual_agents  = $virtual_root . '/AGENTS.md';
 
 mkdir( $site_root, 0777, true );
 mkdir( $worktree_root, 0777, true );
 mkdir( $existing_root, 0777, true );
+mkdir( $virtual_root, 0777, true );
 file_put_contents( $source_agents, "# Site AGENTS\n" );
 file_put_contents( $existing_root . '/AGENTS.md', "# Repo AGENTS\n" );
 
@@ -141,11 +144,27 @@ function datamachine_code_pos( string $haystack, string $needle, string $label )
 datamachine_code_context_assert( is_link( $worktree_agents ), 'root AGENTS.md projection is a symlink' );
 datamachine_code_context_assert( readlink( $worktree_agents ) === $source_agents, 'root AGENTS.md points at site AGENTS.md' );
 datamachine_code_context_assert( in_array( $worktree_agents, $injection['written'], true ), 'projected AGENTS.md is reported as written' );
-datamachine_code_context_assert( trim( file_get_contents( $worktree_root . '/.datamachine/AGENTS.md.source' ) ) === $source_agents, 'projection marker records site AGENTS.md source' );
+datamachine_code_context_assert( trim( file_get_contents( $worktree_root . '/.datamachine/AGENTS.md.source' ) ) === "symlink\n" . $source_agents, 'projection marker records symlink source' );
 datamachine_code_context_assert( ! file_exists( $worktree_root . '/.opencode/AGENTS.local.md' ), 'fake OpenCode local snapshot is not written' );
 mkdir( $worktree_root . '/.opencode', 0777, true );
 file_put_contents( $worktree_root . '/.opencode/AGENTS.local.md', "# Legacy\n" );
 
+$virtual_injection = \DataMachineCode\Workspace\WorktreeContextInjector::inject(
+	$virtual_root,
+	array(
+		'site_name'      => 'Virtual Site',
+		'agents_md_path' => '/wordpress/AGENTS.md',
+		'files'          => array(
+			'MEMORY.md' => "# Virtual Memory\n",
+		),
+	)
+);
+datamachine_code_context_assert( ! is_wp_error( $virtual_injection ), 'virtual context injection succeeds' );
+datamachine_code_context_assert( ! is_link( $virtual_agents ), 'virtual AGENTS.md projection is not a host symlink' );
+datamachine_code_context_assert( is_file( $virtual_agents ), 'virtual AGENTS.md projection is written inline' );
+datamachine_code_context_assert( str_contains( (string) file_get_contents( $virtual_agents ), '# Virtual Memory' ), 'inline virtual projection contains rendered context' );
+datamachine_code_context_assert( trim( file_get_contents( $virtual_root . '/.datamachine/AGENTS.md.source' ) ) === "inline\n/wordpress/AGENTS.md", 'virtual projection marker records inline source' );
+
 $existing_injection = \DataMachineCode\Workspace\WorktreeContextInjector::inject(
 	$existing_root,
 	array(
@@ -165,6 +184,9 @@ function datamachine_code_pos( string $haystack, string $needle, string $label )
 datamachine_code_context_assert( ! file_exists( $worktree_agents ) && ! is_link( $worktree_agents ), 'projected AGENTS.md is gone after uninject' );
 datamachine_code_context_assert( ! file_exists( $worktree_root . '/.datamachine/AGENTS.md.source' ), 'projection marker is gone after uninject' );
 datamachine_code_context_assert( ! file_exists( $worktree_root . '/.opencode/AGENTS.local.md' ), 'uninject removes legacy fake OpenCode local snapshot' );
+$virtual_removed = \DataMachineCode\Workspace\WorktreeContextInjector::uninject( $virtual_root );
+datamachine_code_context_assert( in_array( $virtual_agents, $virtual_removed['removed'], true ), 'uninject removes inline virtual AGENTS.md projection' );
+datamachine_code_context_assert( ! file_exists( $virtual_agents ), 'inline virtual projection is gone after uninject' );
 $existing_removed = \DataMachineCode\Workspace\WorktreeContextInjector::uninject( $existing_root );
 datamachine_code_context_assert( ! file_exists( $existing_root . '/.opencode/opencode.json' ), 'uninject removes DMC-created OpenCode projection config' );
 datamachine_code_context_assert( in_array( $existing_root . '/.opencode/opencode.json', $existing_removed['removed'], true ), 'removed OpenCode projection config is reported' );
@@ -173,8 +195,10 @@ function datamachine_code_pos( string $haystack, string $needle, string $label )
 array_map( 'unlink', glob( $worktree_root . '/.opencode/*' ) ?: array() );
 array_map( 'unlink', glob( $existing_root . '/.claude/*' ) ?: array() );
 array_map( 'unlink', glob( $existing_root . '/.opencode/*' ) ?: array() );
+array_map( 'unlink', glob( $virtual_root . '/.claude/*' ) ?: array() );
 array_map( 'rmdir', array_filter( glob( $worktree_root . '/*' ) ?: array(), 'is_dir' ) );
 array_map( 'rmdir', array_filter( glob( $existing_root . '/*' ) ?: array(), 'is_dir' ) );
+array_map( 'rmdir', array_filter( glob( $virtual_root . '/*' ) ?: array(), 'is_dir' ) );
 unlink( $source_agents );
 unlink( $existing_root . '/AGENTS.md' );
 rmdir( $worktree_root . '/.claude' );
@@ -183,8 +207,11 @@ function datamachine_code_pos( string $haystack, string $needle, string $label )
 rmdir( $existing_root . '/.claude' );
 rmdir( $existing_root . '/.opencode' );
 rmdir( $existing_root . '/.datamachine' );
+rmdir( $virtual_root . '/.claude' );
+rmdir( $virtual_root . '/.datamachine' );
 rmdir( $worktree_root );
 rmdir( $existing_root );
+rmdir( $virtual_root );
 rmdir( $site_root );
 rmdir( $tmp_root );