diff --git a/inc/Abilities/WorkspaceAbilities.php b/inc/Abilities/WorkspaceAbilities.php
index 7e00729..cad8648 100644
--- a/inc/Abilities/WorkspaceAbilities.php
+++ b/inc/Abilities/WorkspaceAbilities.php
@@ -3220,6 +3220,14 @@ private static function resolveCleanupAgentSlug( int $user_id = 0 ): string {
 	 * @return array
 	 */
 	public static function worktreeRemove( array $input ): array|\WP_Error {
+		if ( RemoteWorkspaceBackend::has_registered_state() && RemoteWorkspaceBackend::should_handle() ) {
+			$result = ( new RemoteWorkspaceBackend() )->worktree_remove(
+				$input['repo'] ?? '',
+				$input['branch'] ?? ''
+			);
+			return self::decorate_remote_workspace_result('worktree_remove', $result);
+		}
+
 		$workspace = new Workspace();
 		return $workspace->worktree_remove(
 			$input['repo'] ?? '',
@@ -3235,6 +3243,11 @@ public static function worktreeRemove( array $input ): array|\WP_Error {
 	 * @return array
 	 */
 	public static function worktreePrune( array $input ): array|\WP_Error {   // phpcs:ignore Generic.CodeAnalysis.UnusedFunctionParameter.Found
+		if ( RemoteWorkspaceBackend::has_registered_state() && RemoteWorkspaceBackend::should_handle() ) {
+			$result = ( new RemoteWorkspaceBackend() )->worktree_prune();
+			return self::decorate_remote_workspace_result('worktree_prune', $result);
+		}
+
 		$workspace = new Workspace();
 		return $workspace->worktree_prune();
 	}
diff --git a/inc/Cli/Commands/WorkspaceCommand.php b/inc/Cli/Commands/WorkspaceCommand.php
index b006dd9..2504450 100644
--- a/inc/Cli/Commands/WorkspaceCommand.php
+++ b/inc/Cli/Commands/WorkspaceCommand.php
@@ -3752,6 +3752,20 @@ static function ( array $lock ): array {
 
 	private function render_workspace_error( \WP_Error $error ): void {
 		$data = (array) $error->get_error_data();
+		if ( 'workspace_repo_busy' !== $error->get_error_code() && ! empty($data['next_commands']) && is_array($data['next_commands']) ) {
+			WP_CLI::warning($error->get_error_message());
+			WP_CLI::log('Next commands:');
+			foreach ( $data['next_commands'] as $command ) {
+				if ( is_scalar($command) && '' !== trim( (string) $command) ) {
+					WP_CLI::log('  ' . (string) $command);
+				}
+			}
+			if ( ! empty($data['hint']) ) {
+				WP_CLI::log('Hint: ' . (string) $data['hint']);
+			}
+			WP_CLI::error($error->get_error_message());
+			return;
+		}
 		if ( 'workspace_repo_busy' !== $error->get_error_code() ) {
 			WP_CLI::error($error->get_error_message());
 			return;
diff --git a/inc/Workspace/RemoteWorkspaceBackend.php b/inc/Workspace/RemoteWorkspaceBackend.php
index 3c98424..7bdc025 100644
--- a/inc/Workspace/RemoteWorkspaceBackend.php
+++ b/inc/Workspace/RemoteWorkspaceBackend.php
@@ -134,6 +134,64 @@ public function worktree_add( string $repo_name, string $branch, ?string $from =
 		);
 	}
 
+	/**
+	 * Remove a registered remote worktree branch from local remote-workspace state.
+	 *
+	 * @return array<string,mixed>|\WP_Error
+	 */
+	public function worktree_remove( string $repo_name, string $branch ): array|\WP_Error {
+		$repo_name = $this->resolve_alias($repo_name);
+		$branch    = trim($branch);
+		if ( '' === $repo_name || '' === $branch ) {
+			return new \WP_Error('remote_workspace_worktree_remove_missing_args', 'Repository and branch are required.', array( 'status' => 400 ));
+		}
+
+		$handle = $repo_name . '@' . $this->branch_slug($branch);
+		$state  = $this->state();
+		if ( ! isset($state['worktrees'][ $handle ]) ) {
+			return new \WP_Error('remote_workspace_worktree_not_found', sprintf('Remote workspace worktree "%s" is not registered.', $handle), array( 'status' => 404 ));
+		}
+
+		unset($state['worktrees'][ $handle ]);
+		$this->save_state($state);
+
+		return array(
+			'success' => true,
+			'backend' => 'github_api',
+			'handle'  => $handle,
+			'message' => sprintf('Remote workspace worktree "%s" removed from runtime state.', $handle),
+		);
+	}
+
+	/**
+	 * Prune remote worktree state whose primary repo registration disappeared.
+	 *
+	 * @return array<string,mixed>
+	 */
+	public function worktree_prune(): array {
+		$state  = $this->state();
+		$pruned = array();
+		foreach ( $state['worktrees'] as $handle => $worktree ) {
+			$repo_name = is_array($worktree) ? (string) ( $worktree['repo_name'] ?? '' ) : '';
+			if ( '' !== $repo_name && isset($state['repos'][ $repo_name ]) ) {
+				continue;
+			}
+
+			unset($state['worktrees'][ $handle ]);
+			$pruned[] = (string) $handle;
+		}
+
+		if ( array() !== $pruned ) {
+			$this->save_state($state);
+		}
+
+		return array(
+			'success' => true,
+			'backend' => 'github_api',
+			'pruned'  => $pruned,
+		);
+	}
+
 	/**
 	 * Read a file from GitHub or pending remote workspace state.
 	 *
diff --git a/inc/Workspace/WorkspaceWorktreeLifecycle.php b/inc/Workspace/WorkspaceWorktreeLifecycle.php
index 731b4d5..0814bbf 100644
--- a/inc/Workspace/WorkspaceWorktreeLifecycle.php
+++ b/inc/Workspace/WorkspaceWorktreeLifecycle.php
@@ -1058,7 +1058,13 @@ function () use ( $primary_path, $wt_path, $force, $wt_handle ) {
 				$result = $this->run_git($primary_path, $cmd);
 
 				if ( is_wp_error($result) ) {
-					return $result;
+					return $this->worktree_git_unavailable_with_host_commands(
+						$result,
+						'Remove workspace worktree',
+						array(
+							sprintf('git -C %s %s', escapeshellarg($primary_path), $cmd),
+						)
+					);
 				}
 
 				WorktreeContextInjector::forget_metadata($wt_handle);
@@ -1083,10 +1089,12 @@ function () use ( $primary_path, $wt_path, $force, $wt_handle ) {
 	/**
 	 * Prune stale worktree registry entries across all primaries.
 	 *
-	 * @return array{success: bool, pruned: array}|\WP_Error
+	 * @return array{success: bool, pruned: array, skipped?: array, next_commands?: array, inventory?: array}|\WP_Error
 	 */
 	public function worktree_prune(): array|\WP_Error {
-		$pruned = array();
+		$pruned        = array();
+		$skipped       = array();
+		$next_commands = array();
 
 		if ( ! is_dir($this->workspace_path) ) {
 			return array(
@@ -1110,6 +1118,15 @@ public function worktree_prune(): array|\WP_Error {
 				fn() => $this->run_git($primary_path, 'worktree prune -v')
 			);
 			if ( is_wp_error($result) ) {
+				if ( 'datamachine_workspace_git_unavailable' === $result->get_error_code() ) {
+					$skipped[]       = array(
+						'repo'         => $entry,
+						'primary_path' => $primary_path,
+						'reason'       => $result->get_error_message(),
+					);
+					$next_commands[] = sprintf('git -C %s worktree prune -v', escapeshellarg($primary_path));
+					continue;
+				}
 				return $result;
 			}
 			$pruned[] = $entry;
@@ -1121,12 +1138,40 @@ public function worktree_prune(): array|\WP_Error {
 		}
 
 		return array(
-			'success'   => true,
-			'pruned'    => $pruned,
-			'inventory' => $refresh,
+			'success'       => true,
+			'pruned'        => $pruned,
+			'skipped'       => $skipped,
+			'next_commands' => array_values(array_unique($next_commands)),
+			'inventory'     => $refresh,
 		);
 	}
 
+	/**
+	 * Attach host-shell remediation commands to local-git-unavailable worktree errors.
+	 *
+	 * @param \WP_Error         $error         Original git error.
+	 * @param string            $operation     Human-readable operation.
+	 * @param array<int,string> $next_commands Exact commands to run in a host shell.
+	 * @return \WP_Error
+	 */
+	private function worktree_git_unavailable_with_host_commands( \WP_Error $error, string $operation, array $next_commands ): \WP_Error {
+		if ( 'datamachine_workspace_git_unavailable' !== $error->get_error_code() ) {
+			return $error;
+		}
+
+		$data                  = (array) $error->get_error_data();
+		$data['operation']     = $operation;
+		$data['next_commands'] = array_values(array_filter(array_map('strval', $next_commands)));
+		$data['hint']          = 'Run the listed command from a host shell with local git access, then rerun workspace worktree prune to refresh DMC inventory.';
+
+		$message = $error->get_error_message();
+		if ( ! empty($data['next_commands'][0]) ) {
+			$message .= ' Host command: ' . $data['next_commands'][0];
+		}
+
+		return new \WP_Error($error->get_error_code(), $message, $data);
+	}
+
 
 	/**
 	 * Resolve a sensible default base for new branches.
diff --git a/tests/smoke-remote-workspace-backend-filter.php b/tests/smoke-remote-workspace-backend-filter.php
index 68681e6..18eab48 100644
--- a/tests/smoke-remote-workspace-backend-filter.php
+++ b/tests/smoke-remote-workspace-backend-filter.php
@@ -12,6 +12,14 @@ class GitRunner
 	{
 		public static bool $available = true;
 
+		public static function diagnose(): array
+		{
+			return array(
+				'git_available'       => self::$available,
+				'proc_open_available' => self::$available,
+			);
+		}
+
 		public static function is_available(): bool
 		{
 			return self::$available;
diff --git a/tests/smoke-remote-workspace-backend.php b/tests/smoke-remote-workspace-backend.php
index cb741f7..f6c837d 100644
--- a/tests/smoke-remote-workspace-backend.php
+++ b/tests/smoke-remote-workspace-backend.php
@@ -226,6 +226,24 @@ function update_option( string $key, mixed $value, bool $autoload = true ): bool
     $assert('push is successful compatibility no-op', ! is_wp_error($push) && 'fix/example' === $push['branch']);
     $assert('push backend result omits model-facing guidance', ! is_wp_error($push) && ! array_key_exists('next_required_tool', $push) && ! array_key_exists('next_required_args', $push));
 
+    $second_worktree = $backend->worktree_add('example', 'fix/remove-me');
+    $assert('second worktree add succeeds', ! is_wp_error($second_worktree) && 'example@fix-remove-me' === $second_worktree['handle']);
+
+    $remove = $backend->worktree_remove('example', 'fix/remove-me');
+    $assert('worktree remove clears remote runtime state', ! is_wp_error($remove) && 'example@fix-remove-me' === $remove['handle']);
+    $removed_status = $backend->git_status('example@fix-remove-me');
+    $assert('removed worktree no longer resolves', is_wp_error($removed_status) && 'remote_workspace_repo_not_found' === $removed_status->get_error_code());
+
+    $state = $GLOBALS['dmc_remote_workspace_options']['datamachine_code_remote_workspace_state'];
+    $state['worktrees']['missing@stale'] = array(
+        'repo_name' => 'missing',
+        'repo'      => 'chubes4/missing',
+        'branch'    => 'stale',
+    );
+    $GLOBALS['dmc_remote_workspace_options']['datamachine_code_remote_workspace_state'] = $state;
+    $prune = $backend->worktree_prune();
+    $assert('worktree prune removes remote rows without primary repo state', ! is_wp_error($prune) && array( 'missing@stale' ) === $prune['pruned']);
+
     if (! empty($failures) ) {
         echo "\nFAIL: " . count($failures) . " assertion(s) failed out of {$total}\n";
         foreach ( $failures as $failure ) {
diff --git a/tests/smoke-worktree-prune-no-git.php b/tests/smoke-worktree-prune-no-git.php
new file mode 100644
index 0000000..9384694
--- /dev/null
+++ b/tests/smoke-worktree-prune-no-git.php
@@ -0,0 +1,112 @@
+<?php
+/**
+ * Pure-PHP smoke for worktree prune when the workspace is visible but git is unavailable.
+ *
+ * Run: php tests/smoke-worktree-prune-no-git.php
+ */
+
+declare( strict_types=1 );
+
+namespace DataMachine\Core\FilesRepository {
+    class FilesystemHelper
+    {
+        public static function get(): ?self
+        {
+            return null;
+        }
+    }
+}
+
+namespace {
+    $tmp = sys_get_temp_dir() . '/dmc-worktree-prune-no-git-' . getmypid();
+    if (! defined('ABSPATH') ) {
+        define('ABSPATH', $tmp . '/wp/');
+    }
+    if (! defined('DATAMACHINE_WORKSPACE_PATH') ) {
+        define('DATAMACHINE_WORKSPACE_PATH', $tmp . '/workspace');
+    }
+
+    if (! class_exists('WP_Error') ) {
+        class WP_Error
+        {
+            public function __construct( private string $code, private string $message, private array $data = array() )
+            {
+            }
+
+            public function get_error_code(): string
+            {
+                return $this->code;
+            }
+
+            public function get_error_message(): string
+            {
+                return $this->message;
+            }
+
+            public function get_error_data(): array
+            {
+                return $this->data;
+            }
+        }
+    }
+
+    if (! function_exists('is_wp_error') ) {
+        function is_wp_error( $value ): bool
+        {
+            return $value instanceof WP_Error;
+        }
+    }
+
+    $failures = array();
+    $total    = 0;
+    $assert   = function ( string $label, bool $condition ) use ( &$failures, &$total ): void {
+        ++$total;
+        if ($condition ) {
+            echo "  ok {$label}\n";
+            return;
+        }
+
+        $failures[] = $label;
+        echo "  fail {$label}\n";
+    };
+
+    $old_path = getenv('PATH');
+    putenv('PATH=/nonexistent-dmc-no-git');
+
+    mkdir(DATAMACHINE_WORKSPACE_PATH . '/demo/.git', 0777, true);
+
+    require __DIR__ . '/../inc/Support/RuntimeCapabilities.php';
+    require __DIR__ . '/../inc/Support/ProcessRunner.php';
+    require __DIR__ . '/../inc/Support/GitRunner.php';
+    require __DIR__ . '/../inc/Support/PathSecurity.php';
+    require __DIR__ . '/../inc/Workspace/WorktreeContextInjector.php';
+    require __DIR__ . '/../inc/Workspace/WorkspaceMutationLock.php';
+    require __DIR__ . '/../inc/Workspace/Workspace.php';
+
+    echo "Worktree prune without git - smoke\n";
+
+    $workspace = new DataMachineCode\Workspace\Workspace();
+    $result    = $workspace->worktree_prune();
+
+    $assert('prune returns success instead of git-unavailable error', ! is_wp_error($result) && true === ( $result['success'] ?? false ));
+    $assert('prune records skipped primary', ! is_wp_error($result) && 'demo' === ( $result['skipped'][0]['repo'] ?? '' ));
+    $assert('prune returns host git command', ! is_wp_error($result) && str_contains((string) ( $result['next_commands'][0] ?? '' ), 'git -C'));
+    $assert('inventory refresh still runs', ! is_wp_error($result) && isset($result['inventory']['summary']));
+
+    putenv(false === $old_path ? 'PATH' : 'PATH=' . $old_path);
+
+    if (is_dir($tmp) ) {
+        exec('rm -rf ' . escapeshellarg($tmp));
+    }
+
+    if (! empty($failures) ) {
+        echo "\nFAIL: " . count($failures) . " assertion(s) failed out of {$total}\n";
+        foreach ( $failures as $failure ) {
+            echo "  - {$failure}\n";
+        }
+        exit(1);
+    }
+
+    echo "\nOK ({$total} assertions)\n";
+    exit(0);
+}