fix(ai-agent): reuse the resource form's path and description fields

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

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

@@ -4,11 +4,14 @@
 	import Badge from '$lib/components/common/badge/Badge.svelte'
 	import Path from '$lib/components/Path.svelte'
 	import Label from '$lib/components/Label.svelte'
+	import Required from '$lib/components/Required.svelte'
+	import ResourcePathHint from '$lib/components/ResourcePathHint.svelte'
+	import GfmMarkdown from '$lib/components/GfmMarkdown.svelte'
 	import autosize from '$lib/autosize'
 	import { ResourceService, type InputTransform, type Resource } from '$lib/gen'
 	import { workspaceStore } from '$lib/stores'
 	import { sendUserToast } from '$lib/toast'
-	import { Bot, ChevronDown, ChevronUp, Save, Unlink, Pencil } from 'lucide-svelte'
+	import { Bot, ChevronDown, ChevronUp, Pen, Save, Unlink, Pencil } from 'lucide-svelte'
 	import {
 		AGENT_BRAIN_KEYS,
 		AGENT_FLOW_LOCAL_KEYS,
@@ -85,6 +88,7 @@
 	let newPath = $state('')
 	let pathError = $state('')
 	let description = $state('')
+	let editDescription = $state(false)
 	let saving = $state(false)
 
 	type LinkedInfo = {
@@ -612,7 +616,11 @@
 				Save this AI agent's configuration and tools as a reusable resource. Other flows can then
 				link to it, and updates propagate automatically.
 			</p>
+			<!-- The path and description are the resource form's, field for field: this
+			     drawer creates a resource too, and ResourcePathHint exists so the screens
+			     that do cannot drift apart. -->
 			<Label label="Path">
+				<ResourcePathHint />
 				<Path
 					bind:path={newPath}
 					bind:error={pathError}
@@ -620,17 +628,35 @@
 					namePlaceholder="my_agent"
 					kind="resource"
 					workspaceOverride={ws}
-					size="sm"
 				/>
 			</Label>
-			<Label label="Description">
-				<textarea
-					bind:value={description}
-					use:autosize
-					rows="3"
-					placeholder="What this agent does"
-				></textarea>
-			</Label>
+			<div class="flex flex-col gap-1">
+				<h4 class="inline-flex items-center gap-2 text-xs text-emphasis font-semibold"
+					>Description <Required required={false} />
+					<Button
+						variant="subtle"
+						unifiedSize="xs"
+						btnClasses={editDescription ? 'bg-surface-hover' : ''}
+						startIcon={{ icon: Pen }}
+						on:click={() => (editDescription = !editDescription)}
+					/>
+				</h4>
+				{#if editDescription}
+					<div class="relative">
+						<div class="text-2xs text-primary absolute -top-4 right-0">GH Markdown</div>
+						<textarea
+							class="text-xs text-primary font-normal"
+							use:autosize
+							bind:value={description}
+							placeholder="Describe what this agent does"
+						></textarea>
+					</div>
+				{:else if description == undefined || description == ''}
+					<div class="text-xs text-secondary font-normal">No description provided</div>
+				{:else}
+					<GfmMarkdown md={description} prose="sm" noPadding />
+				{/if}
+			</div>
 			{#if providerSaveError}
 				<p class="text-2xs text-red-600 dark:text-red-400">
 					{providerSaveError}