feat: connect workspace access lifecycle to admin api

TASKS.md

@@ -2,19 +2,18 @@
 
 ## Current
 
-### `feat/settings-live-flow`
+### `feat/workspace-access-polish`
 
-Status: completed
+Status: in_progress
 
 DoD:
-- `apps/ui/html/settings.html` и `apps/ui/js/settings.js` используют live backend для `profile` и `password`
-- `profile` перестает читать данные из `localStorage` как source of truth
-- security-block больше не притворяется готовой интеграцией там, где backend-контракта еще нет
+- `workspace-setup` использует live backend для role-management, member removal, export и delete
+- UI больше не показывает placeholder-поведение для workspace access lifecycle
+- backend дает workspace export и delete контракты, согласованные с UI
 - `test-ui` остается нетронутым как fallback
 
 ## Next
 
-- `feat/workspace-access-polish`
 - `feat/alpine-polish`
 
 ## Backlog

apps/admin-api/src/app.rs

@@ -7,8 +7,9 @@ use crate::{
     auth::{require_session, require_workspace_session},
     routes::{
         access::{
-            create_invitation, create_platform_api_key, delete_invitation, delete_platform_api_key,
-            list_invitations, list_memberships, list_platform_api_keys, revoke_platform_api_key,
+            create_invitation, create_platform_api_key, delete_invitation, delete_membership,
+            delete_platform_api_key, delete_workspace, export_workspace, list_invitations,
+            list_memberships, list_platform_api_keys, revoke_platform_api_key, update_membership,
         },
         agents::{
             create_agent, delete_agent, get_agent, get_agent_version, list_agents, publish_agent,
@@ -94,11 +95,16 @@ pub fn build_app(state: AppState) -> Router {
         )
         .route("/auth-profiles/{auth_profile_id}", get(get_auth_profile))
         .route("/members", get(list_memberships))
+        .route(
+            "/members/{user_id}",
+            axum::routing::patch(update_membership).delete(delete_membership),
+        )
         .route(
             "/invitations",
             get(list_invitations).post(create_invitation),
         )
         .route("/invitations/{invitation_id}", delete(delete_invitation))
+        .route("/export", get(export_workspace))
         .route(
             "/platform-api-keys",
             get(list_platform_api_keys).post(create_platform_api_key),
@@ -127,7 +133,9 @@ pub fn build_app(state: AppState) -> Router {
     let workspace_scoped_router = Router::new()
         .route(
             "/workspaces/{workspace_id}",
-            get(get_workspace).patch(update_workspace),
+            get(get_workspace)
+                .patch(update_workspace)
+                .delete(delete_workspace),
         )
         .nest("/workspaces/{workspace_id}", workspace_router)
         .layer(middleware::from_fn_with_state(
@@ -765,6 +773,89 @@ mod tests {
         assert_eq!(delete_key_status, reqwest::StatusCode::NO_CONTENT);
     }
 
+    #[tokio::test(flavor = "multi_thread")]
+    #[serial]
+    async fn manages_workspace_access_lifecycle() {
+        let registry = test_registry().await;
+        let storage_root = test_storage_root("workspace_access");
+        let base_url = spawn_admin_api(build_test_app(registry.clone(), storage_root)).await;
+        let client = authorized_client(&base_url).await;
+
+        let second_user_id = registry
+            .upsert_bootstrap_user("operator-2@crank.local", "Operator Two", "external-hash")
+            .await
+            .unwrap();
+        registry
+            .ensure_membership(
+                &WorkspaceId::new(DEFAULT_WORKSPACE_ID),
+                &second_user_id,
+                MembershipRole::Viewer,
+            )
+            .await
+            .unwrap();
+
+        let updated_members = assert_success_json(
+            client
+                .patch(format!("{base_url}/members/{}", second_user_id.as_str()))
+                .json(&json!({ "role": "admin" }))
+                .send()
+                .await
+                .unwrap(),
+        )
+        .await;
+        let updated_member = updated_members["items"]
+            .as_array()
+            .unwrap()
+            .iter()
+            .find(|item| item["user"]["id"] == second_user_id.as_str())
+            .unwrap();
+        assert_eq!(updated_member["role"], "admin");
+
+        let exported = assert_success_json(
+            client
+                .get(format!("{base_url}/export"))
+                .send()
+                .await
+                .unwrap(),
+        )
+        .await;
+        assert_eq!(
+            exported["workspace"]["workspace"]["id"],
+            DEFAULT_WORKSPACE_ID
+        );
+        assert_eq!(exported["memberships"].as_array().unwrap().len(), 2);
+
+        let delete_member_status = client
+            .delete(format!("{base_url}/members/{}", second_user_id.as_str()))
+            .send()
+            .await
+            .unwrap()
+            .status();
+        assert_eq!(delete_member_status, reqwest::StatusCode::NO_CONTENT);
+
+        let delete_workspace_status = client
+            .delete(base_url.as_ref())
+            .send()
+            .await
+            .unwrap()
+            .status();
+        assert_eq!(delete_workspace_status, reqwest::StatusCode::NO_CONTENT);
+
+        let root_url = base_url
+            .as_ref()
+            .split("/api/admin/workspaces/")
+            .next()
+            .unwrap();
+        let missing_workspace = client
+            .get(format!(
+                "{root_url}/api/admin/workspaces/{DEFAULT_WORKSPACE_ID}"
+            ))
+            .send()
+            .await
+            .unwrap();
+        assert_eq!(missing_workspace.status(), reqwest::StatusCode::FORBIDDEN);
+    }
+
     #[tokio::test(flavor = "multi_thread")]
     #[serial]
     async fn updates_profile_and_changes_password() {

apps/admin-api/src/error.rs

@@ -124,6 +124,12 @@ impl From<RegistryError> for ApiError {
             RegistryError::UserNotFound { user_id } => {
                 Self::not_found(format!("user {user_id} was not found"))
             }
+            RegistryError::MembershipNotFound {
+                workspace_id,
+                user_id,
+            } => Self::not_found(format!(
+                "membership for user {user_id} in workspace {workspace_id} was not found"
+            )),
             RegistryError::AgentNotFound { agent_id } => {
                 Self::not_found(format!("agent {agent_id} was not found"))
             }

apps/admin-api/src/routes/access.rs

@@ -1,5 +1,5 @@
 use axum::{
-    Json,
+    Extension, Json,
     extract::{Path, State},
     http::StatusCode,
 };
@@ -7,8 +7,9 @@ use serde::Deserialize;
 use serde_json::{Value, json};
 
 use crate::{
+    auth::AuthenticatedSession,
     error::ApiError,
-    service::{InvitationPayload, PlatformApiKeyPayload},
+    service::{InvitationPayload, PlatformApiKeyPayload, UpdateMembershipPayload},
     state::AppState,
 };
 
@@ -23,6 +24,12 @@ pub struct WorkspaceInvitationPath {
     pub invitation_id: String,
 }
 
+#[derive(Deserialize)]
+pub struct WorkspaceMembershipPath {
+    pub workspace_id: String,
+    pub user_id: String,
+}
+
 #[derive(Deserialize)]
 pub struct WorkspacePlatformApiKeyPath {
     pub workspace_id: String,
@@ -40,6 +47,40 @@ pub async fn list_memberships(
     Ok(Json(json!({ "items": items })))
 }
 
+pub async fn update_membership(
+    Path(path): Path<WorkspaceMembershipPath>,
+    State(state): State<AppState>,
+    Extension(session): Extension<AuthenticatedSession>,
+    Json(payload): Json<UpdateMembershipPayload>,
+) -> Result<Json<Value>, ApiError> {
+    let items = state
+        .service
+        .update_membership_role(
+            &path.workspace_id.as_str().into(),
+            &session.user.id,
+            &path.user_id.as_str().into(),
+            payload,
+        )
+        .await?;
+    Ok(Json(json!({ "items": items })))
+}
+
+pub async fn delete_membership(
+    Path(path): Path<WorkspaceMembershipPath>,
+    State(state): State<AppState>,
+    Extension(session): Extension<AuthenticatedSession>,
+) -> Result<StatusCode, ApiError> {
+    state
+        .service
+        .remove_membership(
+            &path.workspace_id.as_str().into(),
+            &session.user.id,
+            &path.user_id.as_str().into(),
+        )
+        .await?;
+    Ok(StatusCode::NO_CONTENT)
+}
+
 pub async fn list_invitations(
     Path(path): Path<WorkspacePath>,
     State(state): State<AppState>,
@@ -127,3 +168,26 @@ pub async fn delete_platform_api_key(
         .await?;
     Ok(StatusCode::NO_CONTENT)
 }
+
+pub async fn export_workspace(
+    Path(path): Path<WorkspacePath>,
+    State(state): State<AppState>,
+) -> Result<Json<Value>, ApiError> {
+    let exported = state
+        .service
+        .export_workspace(&path.workspace_id.as_str().into())
+        .await?;
+    Ok(Json(json!(exported)))
+}
+
+pub async fn delete_workspace(
+    Path(path): Path<WorkspacePath>,
+    State(state): State<AppState>,
+    Extension(session): Extension<AuthenticatedSession>,
+) -> Result<StatusCode, ApiError> {
+    state
+        .service
+        .delete_workspace(&path.workspace_id.as_str().into(), &session.user.id)
+        .await?;
+    Ok(StatusCode::NO_CONTENT)
+}

apps/admin-api/src/service.rs

@@ -219,6 +219,11 @@ pub struct InvitationPayload {
     pub expires_at: Option<String>,
 }
 
+#[derive(Clone, Debug, Deserialize)]
+pub struct UpdateMembershipPayload {
+    pub role: MembershipRole,
+}
+
 #[derive(Clone, Debug, Serialize)]
 pub struct CreatedInvitationResponse {
     pub invitation: InvitationRecord,
@@ -237,6 +242,17 @@ pub struct CreatedPlatformApiKeyResponse {
     pub secret: String,
 }
 
+#[derive(Clone, Debug, Serialize)]
+pub struct WorkspaceExportResponse {
+    pub workspace: WorkspaceRecord,
+    pub memberships: Vec<MembershipRecord>,
+    pub invitations: Vec<Value>,
+    pub operations: Vec<OperationSummaryView>,
+    pub agents: Vec<AgentSummaryView>,
+    pub platform_api_keys: Vec<PlatformApiKeyRecord>,
+    pub exported_at: String,
+}
+
 #[derive(Clone, Debug, Deserialize)]
 pub struct LogsQuery {
     pub level: Option<InvocationLevel>,
@@ -746,6 +762,107 @@ impl AdminService {
         Ok(self.registry.list_memberships(workspace_id).await?)
     }
 
+    pub async fn update_membership_role(
+        &self,
+        workspace_id: &WorkspaceId,
+        actor_user_id: &crank_core::UserId,
+        target_user_id: &crank_core::UserId,
+        payload: UpdateMembershipPayload,
+    ) -> Result<Vec<MembershipRecord>, ApiError> {
+        let memberships = self.list_memberships(workspace_id).await?;
+        let actor_membership = memberships
+            .iter()
+            .find(|membership| &membership.user.id == actor_user_id)
+            .ok_or_else(|| ApiError::forbidden("workspace access denied"))?;
+        let target_membership = memberships
+            .iter()
+            .find(|membership| &membership.user.id == target_user_id)
+            .ok_or_else(|| {
+                ApiError::not_found(format!(
+                    "membership for user {} in workspace {} was not found",
+                    target_user_id.as_str(),
+                    workspace_id.as_str()
+                ))
+            })?;
+
+        if !matches!(
+            actor_membership.role,
+            MembershipRole::Owner | MembershipRole::Admin
+        ) {
+            return Err(ApiError::forbidden(
+                "only owners and admins can manage workspace members",
+            ));
+        }
+
+        if matches!(target_membership.role, MembershipRole::Owner)
+            && !matches!(payload.role, MembershipRole::Owner)
+        {
+            let owner_count = memberships
+                .iter()
+                .filter(|membership| matches!(membership.role, MembershipRole::Owner))
+                .count();
+            if owner_count <= 1 {
+                return Err(ApiError::validation(
+                    "workspace must keep at least one owner",
+                ));
+            }
+        }
+
+        self.registry
+            .update_membership_role(workspace_id, target_user_id, payload.role)
+            .await?;
+        self.list_memberships(workspace_id).await
+    }
+
+    pub async fn remove_membership(
+        &self,
+        workspace_id: &WorkspaceId,
+        actor_user_id: &crank_core::UserId,
+        target_user_id: &crank_core::UserId,
+    ) -> Result<(), ApiError> {
+        let memberships = self.list_memberships(workspace_id).await?;
+        let actor_membership = memberships
+            .iter()
+            .find(|membership| &membership.user.id == actor_user_id)
+            .ok_or_else(|| ApiError::forbidden("workspace access denied"))?;
+        let target_membership = memberships
+            .iter()
+            .find(|membership| &membership.user.id == target_user_id)
+            .ok_or_else(|| {
+                ApiError::not_found(format!(
+                    "membership for user {} in workspace {} was not found",
+                    target_user_id.as_str(),
+                    workspace_id.as_str()
+                ))
+            })?;
+
+        if !matches!(
+            actor_membership.role,
+            MembershipRole::Owner | MembershipRole::Admin
+        ) {
+            return Err(ApiError::forbidden(
+                "only owners and admins can manage workspace members",
+            ));
+        }
+
+        if matches!(target_membership.role, MembershipRole::Owner) {
+            let owner_count = memberships
+                .iter()
+                .filter(|membership| matches!(membership.role, MembershipRole::Owner))
+                .count();
+            if owner_count <= 1 {
+                return Err(ApiError::validation(
+                    "workspace must keep at least one owner",
+                ));
+            }
+        }
+
+        self.registry
+            .delete_membership(workspace_id, target_user_id)
+            .await?;
+        Ok(())
+    }
+
     #[instrument(skip(self))]
     pub async fn list_invitations(
         &self,
@@ -804,6 +921,63 @@ impl AdminService {
         Ok(())
     }
 
+    pub async fn export_workspace(
+        &self,
+        workspace_id: &WorkspaceId,
+    ) -> Result<WorkspaceExportResponse, ApiError> {
+        let workspace = self.get_workspace(workspace_id).await?;
+        let memberships = self.list_memberships(workspace_id).await?;
+        let invitations = self
+            .list_invitations(workspace_id)
+            .await?
+            .into_iter()
+            .map(|record| {
+                json!({
+                    "id": record.invitation.id,
+                    "email": record.invitation.email,
+                    "role": record.invitation.role,
+                    "status": record.invitation.status,
+                    "expires_at": record.invitation.expires_at,
+                    "created_at": record.invitation.created_at,
+                })
+            })
+            .collect();
+        let operations = self.list_operations(workspace_id).await?;
+        let agents = self.list_agents(workspace_id).await?;
+        let platform_api_keys = self.list_platform_api_keys(workspace_id).await?;
+
+        Ok(WorkspaceExportResponse {
+            workspace,
+            memberships,
+            invitations,
+            operations,
+            agents,
+            platform_api_keys,
+            exported_at: now_string()?,
+        })
+    }
+
+    pub async fn delete_workspace(
+        &self,
+        workspace_id: &WorkspaceId,
+        actor_user_id: &crank_core::UserId,
+    ) -> Result<(), ApiError> {
+        let memberships = self.list_memberships(workspace_id).await?;
+        let actor_membership = memberships
+            .iter()
+            .find(|membership| &membership.user.id == actor_user_id)
+            .ok_or_else(|| ApiError::forbidden("workspace access denied"))?;
+
+        if !matches!(actor_membership.role, MembershipRole::Owner) {
+            return Err(ApiError::forbidden(
+                "only workspace owners can delete a workspace",
+            ));
+        }
+
+        self.registry.delete_workspace(workspace_id).await?;
+        Ok(())
+    }
+
     #[instrument(skip(self))]
     pub async fn list_platform_api_keys(
         &self,

apps/ui/html/workspace-setup.html

@@ -304,7 +304,7 @@
           <div class="danger-zone-action">
             <div class="danger-zone-text">
               <div class="danger-zone-title">Export all data</div>
-              <div class="danger-zone-desc">Download a ZIP archive of all operation configs, schemas, mappings and invocation history as JSON.</div>
+              <div class="danger-zone-desc">Download a JSON snapshot of workspace settings, memberships, invitations, operations, agents and platform API keys.</div>
             </div>
             <button class="btn-danger" id="export-workspace-btn" type="button">Export</button>
           </div>

apps/ui/js/api.js

@@ -177,6 +177,12 @@
     listMemberships: function(workspaceId) {
       return get('/workspaces/' + encodeURIComponent(workspaceId) + '/members');
     },
+    updateMembership: function(workspaceId, userId, payload) {
+      return patch('/workspaces/' + encodeURIComponent(workspaceId) + '/members/' + encodeURIComponent(userId), payload);
+    },
+    deleteMembership: function(workspaceId, userId) {
+      return del('/workspaces/' + encodeURIComponent(workspaceId) + '/members/' + encodeURIComponent(userId));
+    },
     listInvitations: function(workspaceId) {
       return get('/workspaces/' + encodeURIComponent(workspaceId) + '/invitations');
     },
@@ -186,6 +192,12 @@
     deleteInvitation: function(workspaceId, invitationId) {
       return del('/workspaces/' + encodeURIComponent(workspaceId) + '/invitations/' + encodeURIComponent(invitationId));
     },
+    exportWorkspace: function(workspaceId) {
+      return get('/workspaces/' + encodeURIComponent(workspaceId) + '/export');
+    },
+    deleteWorkspace: function(workspaceId) {
+      return del('/workspaces/' + encodeURIComponent(workspaceId));
+    },
     listOperations: function(workspaceId) {
       return get('/workspaces/' + encodeURIComponent(workspaceId) + '/operations');
     },

apps/ui/js/workspace-setup.js

@@ -7,6 +7,7 @@ var workspaceFormState = {
   workspaceRecord: null,
   memberships: [],
   invitations: [],
+  currentUserId: null,
 };
 
 function normalizeSlug(value) {
@@ -101,16 +102,32 @@ function applyWorkspaceRecord(record) {
 function addMemberRow(container, membership) {
   var row = document.createElement('div');
   row.className = 'member-row';
+  var isCurrentUser = membership.user.id === workspaceFormState.currentUserId;
+  var canManage = membership.role !== 'owner';
   row.innerHTML =
     '<div class="member-avatar" style="background:linear-gradient(135deg,' + workspaceFormState.selectedColor + ',#6366f1);">' +
       membership.user.display_name.slice(0, 2).toUpperCase() +
     '</div>' +
     '<div class="member-info">' +
-      '<div class="member-name">' + membership.user.display_name + '</div>' +
+      '<div class="member-name">' + membership.user.display_name +
+        (isCurrentUser ? ' <span style="font-size:11px;font-weight:400;color:var(--text-muted);">(you)</span>' : '') +
+      '</div>' +
       '<div class="member-email">' + membership.user.email + '</div>' +
     '</div>' +
     '<div class="member-last-active">—</div>' +
-    '<span class="member-role-badge ' + roleClass(membership.role) + '">' + roleLabel(membership.role) + '</span>';
+    (
+      canManage
+        ? '<select class="member-role-select" data-previous="' + membership.role + '" onchange="updateRole(this, \'' + membership.user.id + '\')">' +
+            '<option value="owner"' + (membership.role === 'owner' ? ' selected' : '') + '>Owner</option>' +
+            '<option value="admin"' + (membership.role === 'admin' ? ' selected' : '') + '>Admin</option>' +
+            '<option value="operator"' + (membership.role === 'operator' ? ' selected' : '') + '>Developer</option>' +
+            '<option value="viewer"' + (membership.role === 'viewer' ? ' selected' : '') + '>Viewer</option>' +
+          '</select>' +
+          '<button class="member-remove-btn" type="button" onclick="removeMember(\'' + membership.user.id + '\', \'' + membership.user.display_name.replace(/'/g, "\\'") + '\')" title="Remove member">' +
+            '<svg width="12" height="12" viewBox="0 0 16 16" fill="none" stroke="currentColor" stroke-width="1.8" stroke-linecap="round" stroke-linejoin="round"><path d="M2 4h12M5 4V3a1 1 0 011-1h4a1 1 0 011 1v1M10 8v4M6 8v4"/><path d="M3 4l1 9a1 1 0 001 1h6a1 1 0 001-1l1-9"/></svg>' +
+          '</button>'
+        : '<span class="member-role-badge ' + roleClass(membership.role) + '">' + roleLabel(membership.role) + '</span>'
+    );
   container.appendChild(row);
 }
 
@@ -175,6 +192,13 @@ async function loadWorkspaceAccessData() {
     return;
   }
 
+  if (window.CrankAuth && typeof window.CrankAuth.fetchSession === 'function') {
+    try {
+      var session = await window.CrankAuth.fetchSession(false);
+      workspaceFormState.currentUserId = session && session.user ? session.user.id : null;
+    } catch (_error) {}
+  }
+
   var membershipsResponse = await window.CrankApi.listMemberships(workspaceFormState.workspaceId);
   var invitationsResponse = await window.CrankApi.listInvitations(workspaceFormState.workspaceId);
   workspaceFormState.memberships = membershipsResponse && membershipsResponse.items ? membershipsResponse.items : [];
@@ -384,12 +408,42 @@ async function sendInvite() {
   }
 }
 
-function updateRole() {
-  alert('Role management is not available yet in the backend.');
+async function updateRole(select, userId) {
+  if (!workspaceFormState.workspaceId || !window.CrankApi) {
+    return;
+  }
+
+  var previous = select.dataset.previous || select.value;
+  select.disabled = true;
+
+  try {
+    var response = await window.CrankApi.updateMembership(workspaceFormState.workspaceId, userId, {
+      role: select.value,
+    });
+    workspaceFormState.memberships = response && response.items ? response.items : workspaceFormState.memberships;
+    renderMembers();
+  } catch (error) {
+    select.value = previous;
+    alert(error.message || 'Failed to update role');
+  } finally {
+    select.disabled = false;
+  }
 }
 
-function removeMember() {
-  alert('Member removal is not available yet in the backend.');
+async function removeMember(userId, name) {
+  if (!workspaceFormState.workspaceId || !window.CrankApi) {
+    return;
+  }
+  if (!confirm('Remove ' + name + ' from this workspace?')) {
+    return;
+  }
+
+  try {
+    await window.CrankApi.deleteMembership(workspaceFormState.workspaceId, userId);
+    await loadWorkspaceAccessData();
+  } catch (error) {
+    alert(error.message || 'Failed to remove member');
+  }
 }
 
 async function revokeInviteById(invitationId) {
@@ -413,6 +467,48 @@ function revokeInvite(button) {
   row.remove();
 }
 
+function downloadJsonFile(fileName, value) {
+  var blob = new Blob([JSON.stringify(value, null, 2)], { type: 'application/json;charset=utf-8' });
+  var url = URL.createObjectURL(blob);
+  var link = document.createElement('a');
+  link.href = url;
+  link.download = fileName;
+  link.click();
+  URL.revokeObjectURL(url);
+}
+
+async function exportWorkspaceSnapshot() {
+  if (!workspaceFormState.workspaceId || !window.CrankApi) {
+    return;
+  }
+
+  try {
+    var snapshot = await window.CrankApi.exportWorkspace(workspaceFormState.workspaceId);
+    var slug = workspaceFormState.workspaceRecord && workspaceFormState.workspaceRecord.workspace
+      ? workspaceFormState.workspaceRecord.workspace.slug
+      : 'workspace';
+    downloadJsonFile(slug + '-snapshot.json', snapshot);
+  } catch (error) {
+    alert(error.message || 'Failed to export workspace');
+  }
+}
+
+async function deleteWorkspaceAction() {
+  if (!workspaceFormState.workspaceId || !window.CrankApi || !window.CrankAuth) {
+    return;
+  }
+  if (!confirm('Delete this workspace? This cannot be undone.')) {
+    return;
+  }
+
+  try {
+    await window.CrankApi.deleteWorkspace(workspaceFormState.workspaceId);
+    await window.CrankAuth.logout();
+  } catch (error) {
+    alert(error.message || 'Failed to delete workspace');
+  }
+}
+
 async function initPage() {
   updatePageMode();
 
@@ -421,13 +517,8 @@ async function initPage() {
     button.classList.toggle('active', button.dataset.lang === language);
   });
 
-  document.getElementById('export-workspace-btn').addEventListener('click', function () {
-    alert('Workspace export is not available yet in the backend.');
-  });
-
-  document.getElementById('delete-workspace-btn').addEventListener('click', function () {
-    alert('Workspace deletion is not available yet in the backend.');
-  });
+  document.getElementById('export-workspace-btn').addEventListener('click', exportWorkspaceSnapshot);
+  document.getElementById('delete-workspace-btn').addEventListener('click', deleteWorkspaceAction);
 
   if (workspaceFormState.isCreateMode) {
     document.getElementById('ws-name').focus();

crates/crank-registry/src/error.rs

@@ -14,6 +14,11 @@ pub enum RegistryError {
     UserNotFound { user_id: String },
     #[error("user with email {email} already exists")]
     UserEmailAlreadyExists { email: String },
+    #[error("membership for user {user_id} in workspace {workspace_id} was not found")]
+    MembershipNotFound {
+        workspace_id: String,
+        user_id: String,
+    },
     #[error("invitation {invitation_id} was not found")]
     InvitationNotFound { invitation_id: String },
     #[error("platform api key {key_id} was not found")]

crates/crank-registry/src/postgres.rs

@@ -415,6 +415,57 @@ impl PostgresRegistry {
         rows.iter().map(map_membership_record).collect()
     }
 
+    pub async fn update_membership_role(
+        &self,
+        workspace_id: &WorkspaceId,
+        user_id: &UserId,
+        role: MembershipRole,
+    ) -> Result<(), RegistryError> {
+        let result = sqlx::query(
+            "update memberships
+             set role = $3
+             where workspace_id = $1 and user_id = $2",
+        )
+        .bind(workspace_id.as_str())
+        .bind(user_id.as_str())
+        .bind(serialize_enum_text(&role, "role")?)
+        .execute(&self.pool)
+        .await?;
+
+        if result.rows_affected() == 0 {
+            return Err(RegistryError::MembershipNotFound {
+                workspace_id: workspace_id.as_str().to_owned(),
+                user_id: user_id.as_str().to_owned(),
+            });
+        }
+
+        Ok(())
+    }
+
+    pub async fn delete_membership(
+        &self,
+        workspace_id: &WorkspaceId,
+        user_id: &UserId,
+    ) -> Result<(), RegistryError> {
+        let result = sqlx::query(
+            "delete from memberships
+             where workspace_id = $1 and user_id = $2",
+        )
+        .bind(workspace_id.as_str())
+        .bind(user_id.as_str())
+        .execute(&self.pool)
+        .await?;
+
+        if result.rows_affected() == 0 {
+            return Err(RegistryError::MembershipNotFound {
+                workspace_id: workspace_id.as_str().to_owned(),
+                user_id: user_id.as_str().to_owned(),
+            });
+        }
+
+        Ok(())
+    }
+
     pub async fn list_invitations(
         &self,
         workspace_id: &WorkspaceId,
@@ -493,6 +544,21 @@ impl PostgresRegistry {
         Ok(())
     }
 
+    pub async fn delete_workspace(&self, workspace_id: &WorkspaceId) -> Result<(), RegistryError> {
+        let result = sqlx::query("delete from workspaces where id = $1")
+            .bind(workspace_id.as_str())
+            .execute(&self.pool)
+            .await?;
+
+        if result.rows_affected() == 0 {
+            return Err(RegistryError::WorkspaceNotFound {
+                workspace_id: workspace_id.as_str().to_owned(),
+            });
+        }
+
+        Ok(())
+    }
+
     pub async fn list_platform_api_keys(
         &self,
         workspace_id: &WorkspaceId,

docs/admin-api.md

@@ -51,15 +51,23 @@
 - `POST /api/admin/workspaces`
 - `GET /api/admin/workspaces/{workspace_id}`
 - `PATCH /api/admin/workspaces/{workspace_id}`
+- `DELETE /api/admin/workspaces/{workspace_id}`
 - `GET /api/admin/workspaces/{workspace_id}/members`
+- `PATCH /api/admin/workspaces/{workspace_id}/members/{user_id}`
+- `DELETE /api/admin/workspaces/{workspace_id}/members/{user_id}`
 - `GET /api/admin/workspaces/{workspace_id}/invitations`
 - `POST /api/admin/workspaces/{workspace_id}/invitations`
 - `DELETE /api/admin/workspaces/{workspace_id}/invitations/{invitation_id}`
+- `GET /api/admin/workspaces/{workspace_id}/export`
 
 Контракт:
 
 - `POST /invitations` возвращает metadata invitation и одноразовый `invite_token`;
-- `invite_token` доступен только в create-response и не возвращается повторно в list endpoints.
+- `invite_token` доступен только в create-response и не возвращается повторно в list endpoints;
+- `PATCH /members/{user_id}` меняет роль участника;
+- `DELETE /members/{user_id}` удаляет участника из workspace;
+- `GET /export` возвращает JSON snapshot workspace lifecycle-данных;
+- `DELETE /workspaces/{workspace_id}` разрешен только `owner`.
 
 ### 5.2. Auth and session
 

docs/alpine-ui-integration-plan.md

@@ -302,27 +302,31 @@ UI-файлы:
 - `GET /api/admin/workspaces/{workspace_id}`
 - `PATCH /api/admin/workspaces/{workspace_id}`
 - `GET /api/admin/workspaces/{workspace_id}/members`
+- `PATCH /api/admin/workspaces/{workspace_id}/members/{user_id}`
+- `DELETE /api/admin/workspaces/{workspace_id}/members/{user_id}`
 - `GET /api/admin/workspaces/{workspace_id}/invitations`
 - `POST /api/admin/workspaces/{workspace_id}/invitations`
 - `DELETE /api/admin/workspaces/{workspace_id}/invitations/{invitation_id}`
+- `GET /api/admin/workspaces/{workspace_id}/export`
+- `DELETE /api/admin/workspaces/{workspace_id}`
 
 Что еще не хватает:
 
 - `switch current workspace` все еще живет на клиенте, а не в session/backend;
-- endpoint на удаление участника или изменение роли, если UI хочет это поддерживать;
-- delete/export workspace lifecycle пока не реализован на backend
+- session-aware current workspace model;
+- finer-grained permission matrix beyond current `owner/admin` management rules.
 
 Отдельный конфликт:
 
 - current workspace по-прежнему client-side;
-- memberships и invitations уже live, но role-management пока read-only;
+- memberships, role-management и invitations уже live;
 - `settings` page не должна дублировать этот flow, пока у нее нет своего backend-контракта
 
 Простой итог:
 
 - `workspace-setup` уже подключен к live backend;
-- create/edit workspace, refresh списка workspace и invitations работают;
-- role management и workspace deletion остаются отдельным следующим этапом.
+- create/edit workspace, memberships, invitations, export и delete работают;
+- текущий workspace все еще остается client-side моделью.
 
 ### 4.8. Settings