fix: explain when an agent cannot be run and drop the broken agent move

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

frontend/src/lib/components/common/table/AgentRow.svelte

@@ -1,7 +1,6 @@
 <script lang="ts">
 	import { base } from '$lib/base'
 	import Dropdown from '$lib/components/DropdownV2.svelte'
-	import type MoveDrawer from '$lib/components/MoveDrawer.svelte'
 	import SharedBadge from '$lib/components/SharedBadge.svelte'
 	import DraftBadge from '$lib/components/DraftBadge.svelte'
 	import type ShareModal from '$lib/components/ShareModal.svelte'
@@ -13,7 +12,7 @@
 	import { isDeployable } from '$lib/utils_deployable'
 	import { getDeployUiSettings } from '$lib/components/home/deploy_ui'
 	import { createEventDispatcher } from 'svelte'
-	import { FileUp, FolderInput, Pen, Shield, Trash } from 'lucide-svelte'
+	import { FileUp, Pen, Shield, Trash } from 'lucide-svelte'
 	import Button from '../button/Button.svelte'
 	import Row from './Row.svelte'
 
@@ -25,7 +24,6 @@
 		agent: ListableResource & { canWrite: boolean }
 		marked: string | undefined
 		shareModal: ShareModal
-		moveDrawer: MoveDrawer
 		deploymentDrawer: DeployWorkspaceDrawer
 		deleteConfirmedCallback?: (() => void) | undefined
 		depth?: number
@@ -37,7 +35,6 @@
 		agent,
 		marked,
 		shareModal,
-		moveDrawer,
 		deploymentDrawer,
 		deleteConfirmedCallback = $bindable(),
 		depth = 0,
@@ -113,14 +110,6 @@
 							shareModal.openDrawer?.(path, 'resource')
 						}
 					},
-					{
-						displayName: 'Move/Rename',
-						icon: FolderInput,
-						disabled: !agent.canWrite || Boolean(agent.draft_only),
-						action: () => {
-							moveDrawer.openDrawer(path, agent.description, 'resource')
-						}
-					},
 					...(!agent.ws_specific &&
 					!agent.draft_only &&
 					isDeployable('resource', path, await getDeployUiSettings())

frontend/src/lib/components/flows/content/AgentEditorHost.svelte

@@ -66,6 +66,8 @@
 		/** The deployed agent to run rather than a draft to edit: the run pane leads, and the form
 		 *  beside it only shows the configuration. Fixed for the mount's lifetime. */
 		view?: boolean
+		/** Why this reader cannot run the agent, if they cannot. Shown in place of the run pane. */
+		runBlockedReason?: string
 	}
 
 	let {
@@ -76,7 +78,8 @@
 		onSelectTool = undefined,
 		onSaved = undefined,
 		isNew = false,
-		view = false
+		view = false,
+		runBlockedReason = undefined
 	}: Props = $props()
 
 	/** The one module the editor edits. Standalone (no `agent` key) so `initFlowState` loads a
@@ -510,95 +513,101 @@
 	{/snippet}
 
 	{#snippet runPane()}
-		<div class="h-full min-h-0 flex flex-col">
-			<!-- Laid out as the script editor's preview column is: what a run takes above what it
-					     produced, both alongside what is being edited. -->
-			<div class="flex-1 min-h-0 {testMode === 'chat' ? 'hidden' : ''}">
-				<Splitpanes horizontal class="h-full">
-					<Pane size={40} minSize={15}>
-						<div class="h-full overflow-auto">
-							<ModulePreview
-								mod={agentModule as FlowModule}
-								schema={flowLocalAgentSchema(schema)}
-								pickableProperties={stepPropPicker?.pickableProperties}
-								runInputKeys={AGENT_EDITOR_RUN_INPUTS}
-								bind:testJob
-								bind:testIsLoading
-								bind:scriptProgress
-							/>
-						</div>
-					</Pane>
-					<Pane size={60} minSize={20}>
-						<ModulePreviewResultViewer
-							lang="deno"
-							editor={undefined}
-							diffEditor={undefined}
-							mod={agentModule as FlowModule}
-							{testJob}
-							{testIsLoading}
-							{scriptProgress}
-							disableMock
-							disableHistory
-						/>
-					</Pane>
-				</Splitpanes>
+		{#if runBlockedReason}
+			<div class="h-full flex items-center justify-center px-8 text-center text-xs text-secondary">
+				{runBlockedReason}
 			</div>
-			{#if chatMounted}
-				<div class={testMode === 'chat' ? 'flex flex-col flex-1 min-h-0' : 'hidden'}>
-					{#if chatGap?.memory}
-						<div class="flex-1 flex flex-col items-center justify-center gap-2 px-8 text-center">
-							<MessageCircleOff size={48} class="text-tertiary opacity-50 mb-2" />
-							<p class="text-sm font-semibold text-emphasis">Chat needs managed memory</p>
-							<p class="text-xs text-secondary max-w-xs">
-								{chatGap.memoryCanTurnOn
-									? 'Without it, every message would be answered without the ones before it.'
-									: 'This agent replays a fixed list of messages. Switch its memory to managed to chat with it.'}
-							</p>
-							{#if chatGap.memoryCanTurnOn && !readOnly}
-								<Button
-									unifiedSize="sm"
-									variant="default"
-									btnClasses="bg-surface mt-2"
-									onClick={turnOnMemory}
-								>
-									Turn on managed memory
-								</Button>
-							{/if}
-						</div>
-					{:else if chatGap?.noStream}
-						<div
-							class="shrink-0 flex items-center gap-2 px-4 py-1.5 border-b text-2xs text-secondary"
-						>
-							<Info size={12} class="shrink-0" />
-							<span class="flex-1">
-								{chatGap.noStream === 'image'
-									? 'Image answers do not stream: each one shows once its run ends.'
-									: 'Streaming is off: each answer shows once its run ends.'}
-							</span>
-							{#if chatGap.noStream === 'off' && !readOnly}
-								<Button unifiedSize="2xs" variant="subtle" onClick={turnOnStreaming}>
-									Turn on
-								</Button>
-							{/if}
-						</div>
-					{/if}
-					<!-- Hidden rather than unmounted while memory is off: switching it off mid-turn must
+		{:else}
+			<div class="h-full min-h-0 flex flex-col">
+				<!-- Laid out as the script editor's preview column is: what a run takes above what it
+					     produced, both alongside what is being edited. -->
+				<div class="flex-1 min-h-0 {testMode === 'chat' ? 'hidden' : ''}">
+					<Splitpanes horizontal class="h-full">
+						<Pane size={40} minSize={15}>
+							<div class="h-full overflow-auto">
+								<ModulePreview
+									mod={agentModule as FlowModule}
+									schema={flowLocalAgentSchema(schema)}
+									pickableProperties={stepPropPicker?.pickableProperties}
+									runInputKeys={AGENT_EDITOR_RUN_INPUTS}
+									bind:testJob
+									bind:testIsLoading
+									bind:scriptProgress
+								/>
+							</div>
+						</Pane>
+						<Pane size={60} minSize={20}>
+							<ModulePreviewResultViewer
+								lang="deno"
+								editor={undefined}
+								diffEditor={undefined}
+								mod={agentModule as FlowModule}
+								{testJob}
+								{testIsLoading}
+								{scriptProgress}
+								disableMock
+								disableHistory
+							/>
+						</Pane>
+					</Splitpanes>
+				</div>
+				{#if chatMounted}
+					<div class={testMode === 'chat' ? 'flex flex-col flex-1 min-h-0' : 'hidden'}>
+						{#if chatGap?.memory}
+							<div class="flex-1 flex flex-col items-center justify-center gap-2 px-8 text-center">
+								<MessageCircleOff size={48} class="text-tertiary opacity-50 mb-2" />
+								<p class="text-sm font-semibold text-emphasis">Chat needs managed memory</p>
+								<p class="text-xs text-secondary max-w-xs">
+									{chatGap.memoryCanTurnOn
+										? 'Without it, every message would be answered without the ones before it.'
+										: 'This agent replays a fixed list of messages. Switch its memory to managed to chat with it.'}
+								</p>
+								{#if chatGap.memoryCanTurnOn && !readOnly}
+									<Button
+										unifiedSize="sm"
+										variant="default"
+										btnClasses="bg-surface mt-2"
+										onClick={turnOnMemory}
+									>
+										Turn on managed memory
+									</Button>
+								{/if}
+							</div>
+						{:else if chatGap?.noStream}
+							<div
+								class="shrink-0 flex items-center gap-2 px-4 py-1.5 border-b text-2xs text-secondary"
+							>
+								<Info size={12} class="shrink-0" />
+								<span class="flex-1">
+									{chatGap.noStream === 'image'
+										? 'Image answers do not stream: each one shows once its run ends.'
+										: 'Streaming is off: each answer shows once its run ends.'}
+								</span>
+								{#if chatGap.noStream === 'off' && !readOnly}
+									<Button unifiedSize="2xs" variant="subtle" onClick={turnOnStreaming}>
+										Turn on
+									</Button>
+								{/if}
+							</div>
+						{/if}
+						<!-- Hidden rather than unmounted while memory is off: switching it off mid-turn must
 							     not end the chat following that turn. Test chats, since what runs is the agent as
 							     edited. -->
-					<div class={chatGap?.memory ? 'hidden' : 'flex flex-col flex-1 min-h-0'}>
-						<FlowChat
-							onRunFlow={runChatTurn}
-							path={chatPath}
-							conversationKind="test"
-							subject="agent"
-							frame="none"
-							inputSchema={AGENT_CHAT_SCHEMA}
-							flowModules={chatModules}
-						/>
+						<div class={chatGap?.memory ? 'hidden' : 'flex flex-col flex-1 min-h-0'}>
+							<FlowChat
+								onRunFlow={runChatTurn}
+								path={chatPath}
+								conversationKind="test"
+								subject="agent"
+								frame="none"
+								inputSchema={AGENT_CHAT_SCHEMA}
+								flowModules={chatModules}
+							/>
+						</div>
 					</div>
-				</div>
-			{/if}
-		</div>
+				{/if}
+			</div>
+		{/if}
 	{/snippet}
 
 	<!-- A tool is a whole step editor, so it gets a surface of its own rather than a level of the

frontend/src/lib/components/home/Item.svelte

@@ -141,7 +141,6 @@
 		on:change={() => dispatch('reload')}
 		agent={item}
 		{shareModal}
-		{moveDrawer}
 		{deploymentDrawer}
 		{depth}
 		bind:menuOpen

frontend/src/routes/(root)/(logged)/agents/edit/[...path]/+page.svelte

@@ -23,6 +23,8 @@
 		enableAi={$copilotInfo.enabled}
 		owns={(t) => t.host === undefined}
 		onClose={(deployed) => goto(deployed ? `${base}/agents/get/${path}` : `${base}/?kind=agent`)}
-		onDeployed={(saved) => goto(`${base}/agents/get/${saved}`)}
+		onDeployed={(saved) =>
+			// Replaced, not pushed: Back would otherwise reopen `new_draft` on an agent that now exists.
+			goto(`${base}/agents/get/${saved}`, { replaceState: isNew })}
 	/>
 </div>

frontend/src/routes/(root)/(logged)/agents/get/[...path]/+page.svelte

@@ -1,15 +1,6 @@
 <script lang="ts">
 	import { page } from '$app/state'
-	import {
-		Bot,
-		FileUp,
-		FolderInput,
-		FormInput,
-		MessageSquare,
-		Pen,
-		Shield,
-		Trash
-	} from 'lucide-svelte'
+	import { Bot, FileUp, FormInput, MessageSquare, Pen, Shield, Trash } from 'lucide-svelte'
 	import { base } from '$lib/base'
 	import { goto } from '$lib/navigation'
 	import { copilotInfo } from '$lib/aiStore'
@@ -19,7 +10,6 @@
 	import ToggleButton from '$lib/components/common/toggleButton-v2/ToggleButton.svelte'
 	import ConfirmationModal from '$lib/components/common/confirmationModal/ConfirmationModal.svelte'
 	import ShareModal from '$lib/components/ShareModal.svelte'
-	import MoveDrawer from '$lib/components/MoveDrawer.svelte'
 	import DeployWorkspaceDrawer from '$lib/components/DeployWorkspaceDrawer.svelte'
 	import AgentEditorHost from '$lib/components/flows/content/AgentEditorHost.svelte'
 	import { keepsManagedMemory } from '$lib/components/flows/agentFormFields'
@@ -43,9 +33,19 @@
 	let loaded = $derived(agent?.state != undefined)
 	let chatAvailable = $derived(keepsManagedMemory(agent?.state?.args?.memory))
 	let canEdit = $derived(loaded && (agent?.canWrite ?? false) && !$userStore?.operator)
+	// An agent runs as a flow preview, and the server refuses a preview to an operator, and to a
+	// non-admin under another user's namespace (`require_path_read_access_for_preview`).
+	let runBlockedReason = $derived(
+		$userStore?.operator
+			? 'Operators cannot run agents yet.'
+			: !$userStore?.is_admin &&
+				  path.startsWith('u/') &&
+				  !path.startsWith(`u/${$userStore?.username}/`)
+				? `Only its owner and workspace admins can run an agent under ${path.split('/').slice(0, 2).join('/')}.`
+				: undefined
+	)
 
 	let shareModal: ShareModal | undefined = $state(undefined)
-	let moveDrawer: MoveDrawer | undefined = $state(undefined)
 	let deploymentDrawer: DeployWorkspaceDrawer | undefined = $state(undefined)
 	let deleteOpen = $state(false)
 
@@ -63,7 +63,6 @@
 
 <ShareModal bind:this={shareModal} />
 <DeployWorkspaceDrawer bind:this={deploymentDrawer} />
-<MoveDrawer bind:this={moveDrawer} on:update={(e) => goto(`${base}/agents/get/${e.detail}`)} />
 <ConfirmationModal
 	open={deleteOpen}
 	title="Delete agent"
@@ -91,7 +90,7 @@
 		<div class="grow"></div>
 		<!-- Only an agent that keeps the conversation can chat: without managed memory every message
 		     would be answered alone, so it is run from its inputs and nothing is offered to switch. -->
-		{#if loaded && chatAvailable && testPane?.mode}
+		{#if loaded && chatAvailable && !runBlockedReason && testPane?.mode}
 			<ToggleButtonGroup
 				bind:selected={
 					() => testPane?.mode,
@@ -131,12 +130,6 @@
 						disabled: !canEdit,
 						action: () => shareModal?.openDrawer?.(path, 'resource')
 					},
-					{
-						displayName: 'Move/Rename',
-						icon: FolderInput,
-						disabled: !canEdit,
-						action: () => moveDrawer?.openDrawer(path, agent?.state?.description, 'resource')
-					},
 					...(!agent?.state?.wsSpecific &&
 					isDeployable('resource', path, await getDeployUiSettings())
 						? [
@@ -178,6 +171,7 @@
 				{toolId}
 				onSelectTool={(id) => (toolId = id)}
 				view
+				{runBlockedReason}
 			/>
 		{/key}
 	</div>