import { TaskChatProjectCreatedCard } from "@/components/task-chat/TaskChatProjectCreatedCard";
import { TaskDetailTasksPanel } from "@/components/task-detail/TaskDetailTasksPanel";
import { FileTree } from "@/components/FileTree";
import { AiConnectionDesignExamples } from "@/components/ai-connections/AiConnectionDesignExamples";
import { SavedProviderKeySelect } from "../components/onboarding/SavedProviderKeySelect";
import { RepositoryEditor } from "@/components/RepositoryEditor";
import { TaskChatRunnerActivityGroup } from "@/components/task-chat/TaskChatRunnerActivityGroup";
import { TaskChatMarker } from "@/components/task-chat/TaskChatMarker";
import { TaskChatComposer } from "@/components/task-chat/TaskChatComposer";
import { TaskTreeControlDialog, TaskTreeControlMenuItems } from "@/components/TaskTreeControls";
import { useState } from "react";
import { ServicesList } from "./apps/app-detail/ServicesPanel";
import { ComposioProvenanceChip } from "./apps/ComposioProvenanceChip";
import type { ComposioServiceRow } from "./apps/composio-services";
import {
  BookOpen,
  Bot,
  Check,
  ChevronDown,
  CircleDot,
  Command as CommandIcon,
  DollarSign,
  Hexagon,
  History,
  Inbox,
  LayoutDashboard,
  ListTodo,
  Mail,
  Plus,
  Search,
  Settings,
  Target,
  Trash2,
  Upload,
  User,
  Zap,
} from "lucide-react";
import { Button } from "@/components/ui/button";
import { ThemeToggle } from "@/components/ThemeToggle";
import { Badge } from "@/components/ui/badge";
import { InlineBanner } from "@/components/InlineBanner";
import { BuiltInLifecycleChip } from "@/components/BuiltInAgentBadges";
import { Input } from "@/components/ui/input";
import { Textarea } from "@/components/ui/textarea";
import { Checkbox } from "@/components/ui/checkbox";
import { Label } from "@/components/ui/label";
import { Separator } from "@/components/ui/separator";
import {
  ResizableHandle,
  ResizablePanel,
  ResizablePanelGroup,
} from "@/components/ui/resizable-panels";
import { Skeleton } from "@/components/ui/skeleton";
import { Tabs, TabsList, TabsTrigger, TabsContent } from "@/components/ui/tabs";
import {
  Card,
  CardHeader,
  CardTitle,
  CardDescription,
  CardContent,
  CardFooter,
} from "@/components/ui/card";
import {
  Dialog,
  DialogTrigger,
  DialogContent,
  DialogHeader,
  DialogTitle,
  DialogDescription,
  DialogFooter,
} from "@/components/ui/dialog";
import {
  Tooltip,
  TooltipTrigger,
  TooltipContent,
} from "@/components/ui/tooltip";
import {
  Select,
  SelectTrigger,
  SelectValue,
  SelectContent,
  SelectItem,
} from "@/components/ui/select";
import {
  DropdownMenu,
  DropdownMenuTrigger,
  DropdownMenuContent,
  DropdownMenuItem,
  DropdownMenuSeparator,
  DropdownMenuCheckboxItem,
  DropdownMenuShortcut,
} from "@/components/ui/dropdown-menu";
import {
  Popover,
  PopoverTrigger,
  PopoverContent,
} from "@/components/ui/popover";
import {
  Sheet,
  SheetTrigger,
  SheetContent,
  SheetHeader,
  SheetTitle,
  SheetDescription,
  SheetFooter,
} from "@/components/ui/sheet";
import {
  Collapsible,
  CollapsibleTrigger,
  CollapsibleContent,
} from "@/components/ui/collapsible";
import { ScrollArea } from "@/components/ui/scroll-area";
import {
  Command,
  CommandInput,
  CommandList,
  CommandGroup,
  CommandItem,
  CommandEmpty,
  CommandSeparator,
} from "@/components/ui/command";
import {
  Breadcrumb,
  BreadcrumbItem,
  BreadcrumbLink,
  BreadcrumbList,
  BreadcrumbPage,
  BreadcrumbSeparator,
} from "@/components/ui/breadcrumb";
import {
  Avatar,
  AvatarFallback,
  AvatarGroup,
  AvatarGroupCount,
} from "@/components/ui/avatar";
import { AgentCapsule, AGENT_GRADIENT_COUNT } from "@/components/AgentCapsule";
import { AgentRunCard } from "@/components/ActiveAgentsPanel";
import { StatusBadge, IssueStatusBadge } from "@/components/StatusBadge";
import { StatusIcon } from "@/components/StatusIcon";
import { EnforcementBanner } from "@/components/EnforcementBanner";
import { ActionCard, ActionCardMobile, BindingsTable } from "@/components/actions/ActionCard";
import { PriorityIcon } from "@/components/PriorityIcon";
import { SHOW_TASK_PRIORITY_UI } from "@/lib/ui-flags";
import { agentStatusDot, agentStatusDotDefault } from "@/lib/status-colors";
import { EntityRow } from "@/components/EntityRow";
import { EmptyState } from "@/components/EmptyState";
import { MetricCard } from "@/components/MetricCard";
import { FilterBar, type FilterValue } from "@/components/FilterBar";
import { InlineEditor } from "@/components/InlineEditor";
import { PageSkeleton } from "@/components/PageSkeleton";
import { Identity } from "@/components/Identity";
import { AppLogo } from "@/pages/apps/AppLogo";
import { IssueReferencePill } from "@/components/IssueReferencePill";
import { MembershipAction } from "@/components/MembershipAction";
import { IssueOutputSection } from "@/components/issue-output/IssueOutputSection";
import { EnvironmentVariablesEditor } from "@/components/environment-variables-editor";
import { IssueThreadInteractionCard } from "@/components/IssueThreadInteractionCard";
import {
  connectedConnectionIntentInteraction,
  issueThreadInteractionFixtureMeta,
  pendingConnectionIntentInteraction,
  retryConnectionIntentInteraction,
} from "@/fixtures/issueThreadInteractionFixtures";
import type { CompanySecret, EnvBinding, Issue } from "@paperclipai/shared";
import { CollectionToolbar } from "@/components/CollectionToolbar";
import { IssueRow } from "@/components/IssueRow";
import {
  EnvInputsList,
  ExternalSourcesList,
  RequiredSkillsList,
  StepSkillPlan,
  StepSourcePolicy,
  TeamCard,
  TeamHierarchyPreview,
  TeamRow,
} from "@/pages/TeamCatalog";
import {
  currentInstalledState,
  onboardingTeams,
  optionalTeam,
  outOfDateInstalledState,
  sampleSkillPreparations,
  sampleTeam,
  warnTeam,
} from "@/pages/TeamCatalog.fixtures";
import type { IssueWorkProduct } from "@paperclipai/shared";

/* ------------------------------------------------------------------ */
/*  Sample data for the Issue Output surface showcase                  */
/* ------------------------------------------------------------------ */

function sampleOutput(
  id: string,
  attachmentId: string,
  contentType: string,
  filename: string,
  opts: { byteSize: number; isPrimary?: boolean; createdAt: string },
): IssueWorkProduct {
  const contentPath = `/api/attachments/${attachmentId}/content`;
  return {
    id,
    companyId: "demo-company",
    projectId: null,
    issueId: "demo-issue",
    executionWorkspaceId: null,
    runtimeServiceId: null,
    type: "artifact",
    provider: "paperclip",
    externalId: null,
    title: filename,
    url: null,
    status: "active",
    reviewState: "none",
    isPrimary: Boolean(opts.isPrimary),
    healthStatus: "unknown",
    summary: null,
    createdByRunId: null,
    createdAt: new Date(opts.createdAt),
    updatedAt: new Date(opts.createdAt),
    metadata: {
      attachmentId,
      contentType,
      byteSize: opts.byteSize,
      contentPath,
      openPath: contentPath,
      downloadPath: `${contentPath}?download=1`,
      originalFilename: filename,
    },
  } as IssueWorkProduct;
}

const DESIGN_GUIDE_OUTPUTS: IssueWorkProduct[] = [
  sampleOutput("wp-vid", "aaaaaaaa-aaaa-4aaa-8aaa-aaaaaaaaaaaa", "video/mp4", "q3-summary.mp4", {
    byteSize: 19_293_798,
    isPrimary: true,
    createdAt: "2026-05-30T12:00:00Z",
  }),
  sampleOutput("wp-pdf", "bbbbbbbb-bbbb-4bbb-8bbb-bbbbbbbbbbbb", "application/pdf", "talking-points.pdf", {
    byteSize: 421_888,
    createdAt: "2026-05-30T11:52:00Z",
  }),
];

const DESIGN_GUIDE_DEGRADED_OUTPUTS: IssueWorkProduct[] = [
  {
    ...sampleOutput("wp-broken", "cccccccc-cccc-4ccc-8ccc-cccccccccccc", "video/mp4", "corrupt-output.mp4", {
      byteSize: 0,
      isPrimary: true,
      createdAt: "2026-05-30T12:01:00Z",
    }),
    // Strip the path metadata so it fails the shared artifact schema.
    metadata: { attachmentId: "cccccccc-cccc-4ccc-8ccc-cccccccccccc", contentType: "video/mp4" },
  } as IssueWorkProduct,
];

const DESIGN_GUIDE_TASK = {
  id: "design-guide-task",
  identifier: "PAP-427",
  title: "Reconcile the navigation model across operator surfaces",
  status: "in_progress",
  priority: "medium",
  blockerAttention: false,
} as unknown as Issue;

/* ------------------------------------------------------------------ */
/*  Section wrapper                                                    */
/* ------------------------------------------------------------------ */

/**
 * Composio service rows for the design guide (PAP-17865). One row per state, so
 * a reader can compare all four side by side rather than connecting a real
 * Composio project to see them.
 */
const DESIGN_GUIDE_COMPOSIO_ROWS: ComposioServiceRow[] = [
  {
    toolkitSlug: "github",
    name: "GitHub",
    description: "Issues, pull requests, and repository actions",
    logoUrl: null,
    state: "connected",
    connectedAccountStatus: "ACTIVE",
    childConnectionId: "design-guide-child",
    toolCount: 42,
    noAuth: false,
  },
  {
    toolkitSlug: "hubspot",
    name: "HubSpot",
    description: "CRM contacts and deals",
    logoUrl: null,
    state: "attention",
    connectedAccountStatus: "EXPIRED",
    childConnectionId: "design-guide-child-2",
    toolCount: 18,
    noAuth: false,
  },
  {
    toolkitSlug: "slack",
    name: "Slack",
    description: "Channels and messages",
    logoUrl: null,
    state: "pending",
    connectedAccountStatus: "INITIALIZING",
    childConnectionId: null,
    toolCount: 12,
    noAuth: false,
  },
  {
    toolkitSlug: "gmail",
    name: "Gmail",
    description: "Read and send mail",
    logoUrl: null,
    state: "not_connected",
    connectedAccountStatus: null,
    childConnectionId: null,
    toolCount: 9,
    noAuth: false,
  },
];

function Section({ title, children }: { title: string; children: React.ReactNode }) {
  return (
    <section className="space-y-4">
      <h3 className="text-sm font-semibold text-muted-foreground uppercase tracking-wide">
        {title}
      </h3>
      <Separator />
      {children}
    </section>
  );
}

function SubSection({ title, children }: { title: string; children: React.ReactNode }) {
  return (
    <div className="space-y-3">
      <h4 className="text-sm font-medium">{title}</h4>
      {children}
    </div>
  );
}

// Onboarding seam (design §6 + §12.5): the TeamCard tile in its "Pick a starter
// team" 3-col grid, with the first defaultInstall tile selected.
function TeamCardShowcase() {
  const [selectedId, setSelectedId] = useState(onboardingTeams[0]?.id ?? null);
  return (
    <div className="grid max-w-2xl gap-4 md:grid-cols-2 lg:grid-cols-3">
      {onboardingTeams.map((team) => (
        <TeamCard
          key={team.id}
          team={team}
          selected={team.id === selectedId}
          onSelect={() => setSelectedId(team.id)}
        />
      ))}
    </div>
  );
}

// Reusable environment-variables editor: one shared grid, in-field source
// switch, fuzzy secret picker, sensitive-value detection, inline health.
const DESIGN_GUIDE_SECRETS: CompanySecret[] = [
  {
    id: "dg-github",
    companyId: "dg",
    scope: "company",
    ownerUserId: null,
    userSecretDefinitionId: null,
    key: "github_token",
    name: "GITHUB_TOKEN",
    provider: "local_encrypted",
    status: "active",
    managedMode: "paperclip_managed",
    externalRef: null,
    providerConfigId: null,
    providerMetadata: null,
    latestVersion: 3,
    description: null,
    lastResolvedAt: null,
    lastRotatedAt: null,
    deletedAt: null,
    createdByAgentId: null,
    createdByUserId: null,
    createdAt: new Date("2026-03-01T10:00:00.000Z"),
    updatedAt: new Date("2026-03-01T10:00:00.000Z"),
  },
  {
    id: "dg-db",
    companyId: "dg",
    scope: "company",
    ownerUserId: null,
    userSecretDefinitionId: null,
    key: "db_connection",
    name: "DB_CONNECTION",
    provider: "local_encrypted",
    status: "active",
    managedMode: "paperclip_managed",
    externalRef: null,
    providerConfigId: null,
    providerMetadata: null,
    latestVersion: 3,
    description: null,
    lastResolvedAt: null,
    lastRotatedAt: null,
    deletedAt: null,
    createdByAgentId: null,
    createdByUserId: null,
    createdAt: new Date("2026-03-01T10:00:00.000Z"),
    updatedAt: new Date("2026-03-01T10:00:00.000Z"),
  },
];

function EnvironmentVariablesEditorShowcase() {
  const [env, setEnv] = useState<Record<string, EnvBinding>>({
    NODE_ENV: { type: "plain", value: "production" },
    GH_TOKEN: { type: "secret_ref", secretId: "dg-github", version: "latest" },
    DB_URL: { type: "secret_ref", secretId: "dg-db", version: 3 },
    STRIPE_API_KEY: { type: "plain", value: "sk-live-51H8xL0aBcDeFgHiJkLmNoPq" },
  });
  return (
    <div className="max-w-(--sz-640px) rounded-md border border-border p-4">
      <EnvironmentVariablesEditor
        value={env}
        secrets={DESIGN_GUIDE_SECRETS}
        onChange={(next) => setEnv(next ?? {})}
        onCreateSecret={async (name) => ({
          ...DESIGN_GUIDE_SECRETS[0]!,
          id: `dg-${name}`,
          key: name,
          name: name.toUpperCase(),
          latestVersion: 1,
        })}
      />
    </div>
  );
}

/* ------------------------------------------------------------------ */
/*  Color swatch                                                       */
/* ------------------------------------------------------------------ */

function Swatch({ name, cssVar }: { name: string; cssVar: string }) {
  return (
    <div className="flex items-center gap-3">
      <div
        className="h-8 w-8 rounded-md border border-border shrink-0"
        style={{ backgroundColor: `var(${cssVar})` }}
      />
      <div>
        <p className="text-xs font-mono">{cssVar}</p>
        <p className="text-xs text-muted-foreground">{name}</p>
      </div>
    </div>
  );
}

/* ------------------------------------------------------------------ */
/*  Page                                                               */
/* ------------------------------------------------------------------ */

function TaskExecutionControlsExample() {
  const [running, setRunning] = useState(true);
  const [dialogMode, setDialogMode] = useState<"resume" | "cancel" | "restore" | null>(null);
  const [wake, setWake] = useState(true);
  return <div className="max-w-xl space-y-4">
    <div className="w-52 rounded-md border border-border p-1">
      <TaskTreeControlMenuItems scope="subtree" canPause={running} canResume={!running} canCancel canRestore={!running}
        onPause={() => setRunning(false)} onResume={() => setDialogMode("resume")}
        onCancel={() => setDialogMode("cancel")} onRestore={() => setDialogMode("restore")} />
    </div>
    <p className="text-sm text-muted-foreground">{running ? "Running: type to switch Stop to Send." : "Paused: resume from the menu."}</p>
    <TaskChatProjectCreatedCard item={{ id: "design-project", kind: "project_created", projectId: "example-project", name: "Onboarding improvements", description: "Help new teams reach their first useful result.", timestamp: "2026-09-11T00:00:00Z", repositories: [{ id: "1", name: "paperclipai/paperclip", url: "https://github.com/paperclipai/paperclip" }] }} />
    {!running ? <TaskChatMarker item={{ id: "design-cancelled", kind: "marker", variant: "interrupted", tone: "neutral", label: "Run cancelled", detail: "The run was cancelled before returning an answer.", collapsible: true }} /> : null}
    <TaskChatComposer pause={!running ? { scope: "subtree", onResume: () => setDialogMode("resume") } : null} onAdd={async () => {}} workMode="standard" stopScope="subtree" onStop={running ? async () => setRunning(false) : undefined} />
    <TaskTreeControlDialog open={dialogMode !== null} onOpenChange={(open) => { if (!open) setDialogMode(null); }}
      mode={dialogMode ?? "cancel"} scope="subtree" affectedCount={3} affectedAgentCount={2} loading={false} pending={false} valid
      wakeAgents={wake} onWakeAgentsChange={setWake} onRetry={() => {}}
      onApply={() => { setRunning(dialogMode !== "cancel" && wake); setDialogMode(null); }} />
  </div>;
}

export function DesignGuide() {
  const [checkedFilePaths, setCheckedFilePaths] = useState(new Set<string>());
  const [status, setStatus] = useState("todo");
  const [priority, setPriority] = useState("medium");
  const [selectValue, setSelectValue] = useState("in_progress");
  const [menuChecked, setMenuChecked] = useState(true);
  const [collapsibleOpen, setCollapsibleOpen] = useState(false);
  const [inlineText, setInlineText] = useState("Click to edit this text");
  const [inlineTitle, setInlineTitle] = useState("Editable Title");
  const [inlineDesc, setInlineDesc] = useState(
    "This is an editable description. Click to edit it — the textarea auto-sizes to fit the content without layout shift."
  );
  const [filters, setFilters] = useState<FilterValue[]>([
    { key: "status", label: "Status", value: "Active" },
    // PAP-411: priority filter demo row suppressed while SHOW_TASK_PRIORITY_UI is off.
    ...(SHOW_TASK_PRIORITY_UI
      ? [{ key: "priority", label: "Priority", value: "High" } as FilterValue]
      : []),
  ]);
  const [allowExternal, setAllowExternal] = useState(false);
  const [allowUnpinned, setAllowUnpinned] = useState(false);
  const [allowLocalPath, setAllowLocalPath] = useState(false);

  return (
    <div className="space-y-10 max-w-4xl">
      {/* Page header */}
      <div>
        <h2 className="text-xl font-bold">Design Guide</h2>
        <p className="text-sm text-muted-foreground mt-1">
          Every component, style, and pattern used across Paperclip.
        </p>
      </div>

      {/* ============================================================ */}
      {/*  COVERAGE                                                     */}
      {/* ============================================================ */}
      <Section title="Component Coverage">
        <p className="text-sm text-muted-foreground">
          This page should be updated when new UI primitives or app-level patterns ship.
        </p>
        <div className="grid gap-6 md:grid-cols-2">
          <SubSection title="UI primitives">
            <div className="flex flex-wrap gap-2">
              {[
                "avatar", "badge", "breadcrumb", "button", "card", "checkbox", "collapsible",
                "command", "dialog", "dropdown-menu", "input", "label", "popover", "resizable-panels",
                "scroll-area", "select", "separator", "sheet", "skeleton", "tabs", "textarea", "tooltip",
              ].map((name) => (
                <Badge key={name} variant="outline" className="font-mono text-(length:--text-nano)">
                  {name}
                </Badge>
              ))}
            </div>
          </SubSection>
          <SubSection title="App components">
            <div className="flex flex-wrap gap-2">
              {[
                "StatusBadge", "StatusIcon", "PriorityIcon", "EntityRow", "EmptyState", "MetricCard",
                "FilterBar", "InlineEditor", "PageSkeleton", "Identity", "CommentThread", "MarkdownEditor",
                "PropertiesPanel", "Sidebar", "CommandPalette", "EnvironmentVariablesEditor",
                "InlineBanner", "BuiltInAgentGate", "BuiltInLifecycleChip", "CollectionToolbar",
                "IssueRow", "ContextualSidebarFrame",
              ].map((name) => (
                <Badge key={name} variant="ghost" className="font-mono text-(length:--text-nano)">
                  {name}
                </Badge>
              ))}
            </div>
          </SubSection>
        </div>
      </Section>

      <Section title="Task Execution Controls">
        <TaskExecutionControlsExample />
      </Section>

      <Section title="Task Collection">
        <p className="max-w-prose text-sm text-muted-foreground">
          CollectionToolbar owns shared geometry while each page owns its state and behavior.
          The canonical task row is opt-in during migration: status leads, unread work uses
          title emphasis, metadata remains stable, and the task identifier trails.
        </p>
        <CollectionToolbar
          context={<span className="text-sm font-medium">Recent tasks</span>}
          search={<Input aria-label="Search task collection example" placeholder="Search tasks..." />}
          controls={<Button variant="outline" size="sm">Filter</Button>}
          actions={<Button size="sm">New task</Button>}
          feedback={<span className="text-xs text-muted-foreground">1 task · Updated newest first</span>}
        />
        <div className="overflow-hidden rounded-lg border border-border">
          <IssueRow
            issue={DESIGN_GUIDE_TASK}
            presentation="task"
            unreadState="visible"
            metadata={<span className="text-xs text-muted-foreground">Updated 12m ago</span>}
            actions={<Button variant="ghost" size="xs">More</Button>}
          />
        </div>
      </Section>

      <Section title="Theme Toggle">
        <SubSection title="Variants">
          <div className="flex max-w-sm flex-col items-start gap-3">
            <ThemeToggle />
            <ThemeToggle variant="menu-action" />
            <ThemeToggle variant="compact-menu-action" />
          </div>
        </SubSection>
      </Section>

      {/* ============================================================ */}
      {/*  COLORS                                                       */}
      {/* ============================================================ */}
      <Section title="Colors">
        <SubSection title="Core">
          <div className="grid grid-cols-2 md:grid-cols-3 gap-4">
            <Swatch name="Background" cssVar="--background" />
            <Swatch name="Foreground" cssVar="--foreground" />
            <Swatch name="Card" cssVar="--card" />
            <Swatch name="Primary" cssVar="--primary" />
            <Swatch name="Primary foreground" cssVar="--primary-foreground" />
            <Swatch name="Secondary" cssVar="--secondary" />
            <Swatch name="Muted" cssVar="--muted" />
            <Swatch name="Muted foreground" cssVar="--muted-foreground" />
            <Swatch name="Accent" cssVar="--accent" />
            <Swatch name="Destructive" cssVar="--destructive" />
            <Swatch name="Border" cssVar="--border" />
            <Swatch name="Ring" cssVar="--ring" />
          </div>
        </SubSection>

        <SubSection title="Sidebar">
          <div className="grid grid-cols-2 md:grid-cols-3 gap-4">
            <Swatch name="Sidebar" cssVar="--sidebar" />
            <Swatch name="Sidebar border" cssVar="--sidebar-border" />
          </div>
        </SubSection>

        <SubSection title="Chart">
          <div className="grid grid-cols-2 md:grid-cols-3 gap-4">
            <Swatch name="Chart 1" cssVar="--chart-1" />
            <Swatch name="Chart 2" cssVar="--chart-2" />
            <Swatch name="Chart 3" cssVar="--chart-3" />
            <Swatch name="Chart 4" cssVar="--chart-4" />
            <Swatch name="Chart 5" cssVar="--chart-5" />
          </div>
        </SubSection>
      </Section>

      {/* ============================================================ */}
      {/*  TYPOGRAPHY                                                   */}
      {/* ============================================================ */}
      <Section title="Runner activity">
        <TaskChatRunnerActivityGroup item={{ id: "design-runner-activity", kind: "activity_phase", active: true, summary: "", interstitial: { id: "design-runner-commentary", kind: "message", author: "agent", text: "I’ll inspect the activity feed and check the layout.", interstitial: true }, items: [
          { id: "design-runner-read", kind: "tool", name: "read", target: "TaskChatRunnerTurn.tsx", status: "completed", detail: "Found the activity groups." },
          { id: "design-runner-check", kind: "tool", name: "exec_command", target: "pnpm check:token-gates", status: "in_progress" },
        ] }} />
        <TaskChatRunnerActivityGroup item={{ id: "design-runner-completed", kind: "activity_phase", active: false, summary: "", items: [
          { id: "design-completed-read", kind: "tool", name: "read", target: "TaskChatRunnerTurn.tsx", status: "completed", detail: "Read the activity groups." },
          { id: "design-completed-check", kind: "tool", name: "exec_command", target: "pnpm check:token-gates", status: "failed", detail: "A token check needs another pass." },
        ] }} />
      </Section>

      <Section title="Typography">
        <div className="space-y-3">
          <h2 className="text-xl font-bold">Page Title — text-xl font-bold</h2>
          <h2 className="text-lg font-semibold">Section Title — text-lg font-semibold</h2>
          <h3 className="text-sm font-semibold text-muted-foreground uppercase tracking-wide">
            Section Heading — text-sm font-semibold uppercase tracking-wide
          </h3>
          <p className="text-sm font-medium">Card Title — text-sm font-medium</p>
          <p className="text-sm font-semibold">Card Title Alt — text-sm font-semibold</p>
          <p className="text-sm">Body text — text-sm</p>
          <p className="text-sm text-muted-foreground">
            Muted description — text-sm text-muted-foreground
          </p>
          <p className="text-xs text-muted-foreground">
            Tiny label — text-xs text-muted-foreground
          </p>
          <p className="text-sm font-mono text-muted-foreground">
            Mono identifier — text-sm font-mono text-muted-foreground
          </p>
          <p className="text-2xl font-bold">Large stat — text-2xl font-bold</p>
          <p className="font-mono text-xs">Log/code text — font-mono text-xs</p>
        </div>
      </Section>

      {/* ============================================================ */}
      {/*  SPACING & RADIUS                                             */}
      {/* ============================================================ */}
      <Section title="Radius">
        <div className="flex items-end gap-4 flex-wrap">
          {[
            ["sm", "var(--radius-sm)"],
            ["md", "var(--radius-md)"],
            ["lg", "var(--radius-lg)"],
            ["xl", "var(--radius-xl)"],
            ["full", "9999px"],
          ].map(([label, radius]) => (
            <div key={label} className="flex flex-col items-center gap-1">
              <div
                className="h-12 w-12 bg-primary"
                style={{ borderRadius: radius }}
              />
              <span className="text-xs text-muted-foreground">{label}</span>
            </div>
          ))}
        </div>
      </Section>

      {/* ============================================================ */}
      {/*  BUTTONS                                                      */}
      {/* ============================================================ */}
      <Section title="Buttons">
        <SubSection title="Variants">
          <div className="flex items-center gap-2 flex-wrap">
            <Button variant="default">Default</Button>
            <Button variant="secondary">Secondary</Button>
            <Button variant="outline">Outline</Button>
            <Button variant="ghost">Ghost</Button>
            <Button variant="destructive">Destructive</Button>
            <Button variant="link">Link</Button>
          </div>
        </SubSection>

        <SubSection title="Sizes">
          <div className="flex items-center gap-2 flex-wrap">
            <Button size="xs">Extra Small</Button>
            <Button size="sm">Small</Button>
            <Button size="default">Default</Button>
            <Button size="lg">Large</Button>
          </div>
        </SubSection>

        <SubSection title="Icon buttons">
          <div className="flex items-center gap-2 flex-wrap">
            <Button variant="ghost" size="icon-xs"><Search /></Button>
            <Button variant="ghost" size="icon-sm"><Search /></Button>
            <Button variant="outline" size="icon"><Search /></Button>
            <Button variant="outline" size="icon-lg"><Search /></Button>
          </div>
        </SubSection>

        <SubSection title="With icons">
          <div className="flex items-center gap-2 flex-wrap">
            <Button><Plus /> New Issue</Button>
            <Button variant="outline"><Upload /> Upload</Button>
            <Button variant="destructive"><Trash2 /> Delete</Button>
            <Button size="sm"><Plus /> Add</Button>
          </div>
        </SubSection>

        <SubSection title="States">
          <div className="flex items-center gap-2 flex-wrap">
            <Button disabled>Disabled</Button>
            <Button variant="outline" disabled>Disabled Outline</Button>
          </div>
        </SubSection>
      </Section>

      {/* ============================================================ */}
      {/*  BADGES                                                       */}
      {/* ============================================================ */}
      <Section title="Badges">
        <SubSection title="Variants">
          <div className="flex items-center gap-2 flex-wrap">
            <Badge variant="default">Default</Badge>
            <Badge variant="secondary">Secondary</Badge>
            <Badge variant="outline">Outline</Badge>
            <Badge variant="destructive">Destructive</Badge>
            <Badge variant="ghost">Ghost</Badge>
          </div>
        </SubSection>
      </Section>

      {/* ============================================================ */}
      {/*  STATUS BADGES & ICONS                                        */}
      {/* ============================================================ */}
      <Section title="Status System">
        <SubSection title="StatusBadge (all statuses)">
          <div className="flex items-center gap-2 flex-wrap">
            {[
              "active", "running", "paused", "idle", "archived", "planned",
              "achieved", "completed", "failed", "timed_out", "succeeded", "error",
              "pending_approval", "backlog", "todo", "in_progress", "in_review", "blocked",
              "done", "terminated", "cancelled", "pending", "revision_requested",
              "approved", "rejected",
            ].map((s) => (
              <StatusBadge key={s} status={s} />
            ))}
          </div>
        </SubSection>

        <SubSection title="IssueStatusBadge (brand chip + glyph — PAP-75)">
          <div className="flex items-center gap-2 flex-wrap">
            {["backlog", "todo", "in_progress", "in_review", "done", "blocked", "cancelled"].map(
              (s) => (
                <IssueStatusBadge key={s} status={s} />
              )
            )}
          </div>
        </SubSection>

        <SubSection title="StatusIcon (interactive)">
          <div className="flex items-center gap-3 flex-wrap">
            {["backlog", "todo", "in_progress", "in_review", "done", "cancelled", "blocked"].map(
              (s) => (
                <div key={s} className="flex items-center gap-1.5">
                  <StatusIcon status={s} />
                  <span className="text-xs text-muted-foreground">{s}</span>
                </div>
              )
            )}
          </div>
          <div className="flex items-center gap-2 mt-2">
            <StatusIcon status={status} onChange={setStatus} />
            <span className="text-sm">Click the icon to change status (current: {status})</span>
          </div>
        </SubSection>

        {/* PAP-411: PriorityIcon showcase gated behind SHOW_TASK_PRIORITY_UI per board decision. */}
        {SHOW_TASK_PRIORITY_UI && (
        <SubSection title="PriorityIcon (interactive)">
          <div className="flex items-center gap-3 flex-wrap">
            {["critical", "high", "medium", "low"].map((p) => (
              <div key={p} className="flex items-center gap-1.5">
                <PriorityIcon priority={p} />
                <span className="text-xs text-muted-foreground">{p}</span>
              </div>
            ))}
          </div>
          <div className="flex items-center gap-2 mt-2">
            <PriorityIcon priority={priority} onChange={setPriority} />
            <span className="text-sm">Click the icon to change (current: {priority})</span>
          </div>
        </SubSection>
        )}

        <SubSection title="Agent status dots">
          <div className="flex items-center gap-4 flex-wrap">
            {(["running", "active", "paused", "error", "archived"] as const).map((label) => (
              <div key={label} className="flex items-center gap-2">
                <span className="relative flex h-2.5 w-2.5">
                  <span className={`inline-flex h-full w-full rounded-full ${agentStatusDot[label] ?? agentStatusDotDefault}`} />
                </span>
                <span className="text-xs text-muted-foreground">{label}</span>
              </div>
            ))}
          </div>
        </SubSection>

        <SubSection title="Run invocation badges">
          <div className="flex items-center gap-2 flex-wrap">
            {[
              ["timer", "bg-blue-100 text-blue-700 dark:bg-blue-900/50 dark:text-blue-300"],
              ["assignment", "bg-violet-100 text-violet-700 dark:bg-violet-900/50 dark:text-violet-300"],
              ["on_demand", "bg-cyan-100 text-cyan-700 dark:bg-cyan-900/50 dark:text-cyan-300"],
              ["automation", "bg-muted text-muted-foreground"],
            ].map(([label, cls]) => (
              <Badge variant="ghost" key={label} className={`px-1.5 text-(length:--text-nano) ${cls}`}>
                {label}
              </Badge>
            ))}
          </div>
        </SubSection>

        <SubSection title="IssueReferencePill">
          <p className="text-xs text-muted-foreground">
            Used wherever a task is referenced — in markdown, the Related Work tab, and activity summaries.
            Pass <code className="font-mono">status</code> to show the target issue&apos;s state at a glance.
            Use <code className="font-mono">variant="property"</code> for compact badges with direct navigation.
            Pass <code className="font-mono">onRemove</code> for a separate blocker removal control with reserved space.
            Use <code className="font-mono">strikethrough</code> for &quot;removed&quot; contexts.
          </p>
          <div className="flex items-center gap-2 flex-wrap">
            <IssueReferencePill issue={{ id: "demo-1", identifier: "PAP-123", title: "Identifier only — no status yet" }} />
            <IssueReferencePill issue={{ id: "demo-2", identifier: "PAP-456", title: "With in_progress status", status: "in_progress" }} />
            <IssueReferencePill issue={{ id: "demo-3", identifier: "PAP-789", title: "Done status", status: "done" }} />
            <IssueReferencePill issue={{ id: "demo-4", identifier: "PAP-101", title: "Blocked status", status: "blocked" }} />
            <IssueReferencePill onRemove={() => window.alert("Blocker removed")} issue={{ id: "demo-blocker", identifier: "PAP-303", title: "Hover or focus to remove blocker", status: "in_review" }} />
            <IssueReferencePill strikethrough issue={{ id: "demo-5", identifier: "PAP-202", title: "Removed (strikethrough)", status: "todo" }} />
          </div>
        </SubSection>
      </Section>

      {/* ============================================================ */}
      {/*  AGENT CAPSULE                                                */}
      {/* ============================================================ */}
      <Section title="Agent Capsule">
        <p className="text-sm text-muted-foreground max-w-prose">
          The brand &quot;capsule is the agent&quot; motif. A single agent reads as a tall
          pill that moves through three states as it comes to life. The online fill uses
          the live brand agent-gradient tokens (<code className="font-mono">--agent-Na</code> →{" "}
          <code className="font-mono">--agent-Nb</code>); <code className="font-mono">prefers-reduced-motion</code>{" "}
          skips the liquid rise and pulses and renders the final state.
        </p>
        <SubSection title="States">
          <div className="flex items-end gap-10">
            <div className="flex flex-col items-center gap-2">
              <AgentCapsule state="slot" />
              <span className="text-xs text-muted-foreground">slot</span>
            </div>
            <div className="flex flex-col items-center gap-2">
              <AgentCapsule state="configured" />
              <span className="text-xs text-muted-foreground">configured</span>
            </div>
            <div className="flex flex-col items-center gap-2">
              <AgentCapsule state="online" gradient={5} />
              <span className="text-xs text-muted-foreground">online</span>
            </div>
            <div className="flex flex-col items-center gap-2">
              <AgentCapsule state="online" gradient={5} glow="blue" />
              <span className="text-xs text-muted-foreground">online · blue glow</span>
            </div>
          </div>
        </SubSection>
        <SubSection title="Sizes">
          <div className="flex items-end gap-8">
            <div className="flex flex-col items-center gap-2">
              <AgentCapsule state="online" size="sm" gradient={1} />
              <span className="text-xs text-muted-foreground">sm</span>
            </div>
            <div className="flex flex-col items-center gap-2">
              <AgentCapsule state="online" size="md" gradient={4} />
              <span className="text-xs text-muted-foreground">md</span>
            </div>
            <div className="flex flex-col items-center gap-2">
              <AgentCapsule state="online" size="lg" gradient={8} />
              <span className="text-xs text-muted-foreground">lg</span>
            </div>
            <div className="flex flex-col items-center gap-2">
              <AgentCapsule state="online" size={{ width: 28, height: 96 }} gradient={6} />
              <span className="text-xs text-muted-foreground">custom px</span>
            </div>
          </div>
        </SubSection>
        <SubSection title="Gradients">
          <div className="flex items-end gap-3 flex-wrap">
            {Array.from({ length: AGENT_GRADIENT_COUNT }, (_, i) => (
              <div key={i} className="flex flex-col items-center gap-1.5">
                <AgentCapsule state="online" size="sm" gradient={i + 1} />
                <span className="text-(length:--text-nano) font-mono text-muted-foreground">{i + 1}</span>
              </div>
            ))}
          </div>
        </SubSection>
      </Section>

      {/* ============================================================ */}
      {/*  FORM ELEMENTS                                                */}
      {/* ============================================================ */}
      <Section title="Form Elements">
        <div className="grid gap-6 md:grid-cols-2">
          <SubSection title="Input">
            <Input placeholder="Default input" />
            <Input placeholder="Disabled input" disabled className="mt-2" />
          </SubSection>

          <SubSection title="Textarea">
            <Textarea placeholder="Write something..." />
          </SubSection>

          <SubSection title="Checkbox & Label">
            <div className="space-y-3">
              <div className="flex items-center gap-2">
                <Checkbox id="check1" defaultChecked />
                <Label htmlFor="check1">Checked item</Label>
              </div>
              <div className="flex items-center gap-2">
                <Checkbox id="check2" />
                <Label htmlFor="check2">Unchecked item</Label>
              </div>
              <div className="flex items-center gap-2">
                <Checkbox id="check3" disabled />
                <Label htmlFor="check3">Disabled item</Label>
              </div>
            </div>
          </SubSection>

          <SubSection title="Inline Editor">
            <div className="space-y-4">
              <div>
                <p className="text-xs text-muted-foreground mb-1">Title (single-line)</p>
                <InlineEditor
                  value={inlineTitle}
                  onSave={setInlineTitle}
                  as="h2"
                  className="text-xl font-bold"
                />
              </div>
              <div>
                <p className="text-xs text-muted-foreground mb-1">Body text (single-line)</p>
                <InlineEditor
                  value={inlineText}
                  onSave={setInlineText}
                  as="p"
                  className="text-sm"
                />
              </div>
              <div>
                <p className="text-xs text-muted-foreground mb-1">Description (multiline, auto-sizing)</p>
                <InlineEditor
                  value={inlineDesc}
                  onSave={setInlineDesc}
                  as="p"
                  className="text-sm text-muted-foreground"
                  placeholder="Add a description..."
                  multiline
                />
              </div>
            </div>
          </SubSection>
        </div>
      </Section>

      {/* ============================================================ */}
      {/*  SELECT                                                       */}
      {/* ============================================================ */}
      <Section title="Select">
        <div className="grid gap-6 md:grid-cols-2">
          <SubSection title="Default size">
            <Select value={selectValue} onValueChange={setSelectValue}>
              <SelectTrigger className="w-full">
                <SelectValue placeholder="Select status" />
              </SelectTrigger>
              <SelectContent>
                <SelectItem value="backlog">Backlog</SelectItem>
                <SelectItem value="todo">Todo</SelectItem>
                <SelectItem value="in_progress">In Progress</SelectItem>
                <SelectItem value="in_review">In Review</SelectItem>
                <SelectItem value="done">Done</SelectItem>
              </SelectContent>
            </Select>
            <p className="text-xs text-muted-foreground">Current value: {selectValue}</p>
          </SubSection>
          <SubSection title="Small trigger">
            <Select defaultValue="high">
              <SelectTrigger size="sm" className="w-full">
                <SelectValue />
              </SelectTrigger>
              <SelectContent>
                <SelectItem value="critical">Critical</SelectItem>
                <SelectItem value="high">High</SelectItem>
                <SelectItem value="medium">Medium</SelectItem>
                <SelectItem value="low">Low</SelectItem>
              </SelectContent>
            </Select>
          </SubSection>
        </div>
      </Section>

      {/* ============================================================ */}
      {/*  DROPDOWN MENU                                                */}
      {/* ============================================================ */}
      <Section title="Dropdown Menu">
        <DropdownMenu>
          <DropdownMenuTrigger asChild>
            <Button variant="outline" size="sm">
              Quick Actions
              <ChevronDown className="h-4 w-4" />
            </Button>
          </DropdownMenuTrigger>
          <DropdownMenuContent align="start" className="w-56">
            <DropdownMenuItem>
              <Check className="h-4 w-4" />
              Mark as done
              <DropdownMenuShortcut>⌘D</DropdownMenuShortcut>
            </DropdownMenuItem>
            <DropdownMenuItem>
              <BookOpen className="h-4 w-4" />
              Open docs
            </DropdownMenuItem>
            <DropdownMenuSeparator />
            <DropdownMenuCheckboxItem
              checked={menuChecked}
              onCheckedChange={(value) => setMenuChecked(value === true)}
            >
              Watch issue
            </DropdownMenuCheckboxItem>
            <DropdownMenuItem variant="destructive">
              <Trash2 className="h-4 w-4" />
              Delete issue
            </DropdownMenuItem>
          </DropdownMenuContent>
        </DropdownMenu>
      </Section>

      {/* ============================================================ */}
      {/*  POPOVER                                                      */}
      {/* ============================================================ */}
      <Section title="Popover">
        <Popover>
          <PopoverTrigger asChild>
            <Button variant="outline" size="sm">Open Popover</Button>
          </PopoverTrigger>
          <PopoverContent className="space-y-2">
            <p className="text-sm font-medium">Agent heartbeat</p>
            <p className="text-xs text-muted-foreground">
              Last run succeeded 24s ago. Next timer run in 9m.
            </p>
            <Button size="xs">Wake now</Button>
          </PopoverContent>
        </Popover>
      </Section>

      {/* ============================================================ */}
      {/*  COLLAPSIBLE                                                  */}
      {/* ============================================================ */}
      <Section title="Collapsible">
        <Collapsible open={collapsibleOpen} onOpenChange={setCollapsibleOpen} className="space-y-2">
          <CollapsibleTrigger asChild>
            <Button variant="outline" size="sm">
              {collapsibleOpen ? "Hide" : "Show"} advanced filters
            </Button>
          </CollapsibleTrigger>
          <CollapsibleContent className="rounded-md border border-border p-3">
            <div className="space-y-2">
              <Label htmlFor="owner-filter">Owner</Label>
              <Input id="owner-filter" placeholder="Filter by agent name" />
            </div>
          </CollapsibleContent>
        </Collapsible>
      </Section>

      {/* ============================================================ */}
      {/*  SHEET                                                        */}
      {/* ============================================================ */}
      <Section title="Sheet">
        <Sheet>
          <SheetTrigger asChild>
            <Button variant="outline" size="sm">Open Side Panel</Button>
          </SheetTrigger>
          <SheetContent side="right">
            <SheetHeader>
              <SheetTitle>Issue Properties</SheetTitle>
              <SheetDescription>Edit metadata without leaving the current page.</SheetDescription>
            </SheetHeader>
            <div className="space-y-4 px-4">
              <div className="space-y-1">
                <Label htmlFor="sheet-title">Title</Label>
                <Input id="sheet-title" defaultValue="Improve onboarding docs" />
              </div>
              <div className="space-y-1">
                <Label htmlFor="sheet-description">Description</Label>
                <Textarea id="sheet-description" defaultValue="Capture setup pitfalls and screenshots." />
              </div>
            </div>
            <SheetFooter>
              <Button variant="outline">Cancel</Button>
              <Button>Save</Button>
            </SheetFooter>
          </SheetContent>
        </Sheet>
      </Section>

      {/* ============================================================ */}
      {/*  SCROLL AREA                                                  */}
      {/* ============================================================ */}
      <Section title="Scroll Area">
        <ScrollArea className="h-36 rounded-md border border-border">
          <div className="space-y-2 p-3">
            {Array.from({ length: 12 }).map((_, i) => (
              <div key={i} className="rounded-md border border-border p-2 text-sm">
                Heartbeat run #{i + 1}: completed successfully
              </div>
            ))}
          </div>
        </ScrollArea>
      </Section>

      {/* ============================================================ */}
      {/*  COMMAND                                                      */}
      {/* ============================================================ */}
      <Section title="Command (CMDK)">
        <div className="rounded-md border border-border">
          <Command>
            <CommandInput placeholder="Type a command or search..." />
            <CommandList>
              <CommandEmpty>No results found.</CommandEmpty>
              <CommandGroup heading="Pages">
                <CommandItem>
                  <LayoutDashboard className="h-4 w-4" />
                  Dashboard
                </CommandItem>
                <CommandItem>
                  <CircleDot className="h-4 w-4" />
                  Issues
                </CommandItem>
              </CommandGroup>
              <CommandSeparator />
              <CommandGroup heading="Actions">
                <CommandItem>
                  <CommandIcon className="h-4 w-4" />
                  Open command palette
                </CommandItem>
                <CommandItem>
                  <Plus className="h-4 w-4" />
                  Create new issue
                </CommandItem>
              </CommandGroup>
            </CommandList>
          </Command>
        </div>
      </Section>

      {/* ============================================================ */}
      {/*  BREADCRUMB                                                   */}
      {/* ============================================================ */}
      <Section title="Breadcrumb">
        <Breadcrumb>
          <BreadcrumbList>
            <BreadcrumbItem>
              <BreadcrumbLink href="#">Projects</BreadcrumbLink>
            </BreadcrumbItem>
            <BreadcrumbSeparator />
            <BreadcrumbItem>
              <BreadcrumbLink href="#">Paperclip App</BreadcrumbLink>
            </BreadcrumbItem>
            <BreadcrumbSeparator />
            <BreadcrumbItem>
              <BreadcrumbPage>Issue List</BreadcrumbPage>
            </BreadcrumbItem>
          </BreadcrumbList>
        </Breadcrumb>
      </Section>

      {/* ============================================================ */}
      {/*  CARDS                                                        */}
      {/* ============================================================ */}
      <Section title="Cards">
        <SubSection title="Dashboard agent runs">
          <div className="grid gap-4 md:grid-cols-2 xl:grid-cols-3">
            {["running", "queued", "succeeded", "failed", "timed_out", "cancelled", "interrupted"].map((status) => (
              <AgentRunCard
                key={status}
                companyId="design-guide"
                run={{
                  id: `design-guide-${status}`, agentId: "design-guide-agent", agentName: "CodexCoder",
                  status, adapterType: "codex_local", invocationSource: "on_demand", triggerDetail: "manual",
                  startedAt: null, finishedAt: null, createdAt: "2026-09-11T12:00:00Z", issueId: "design-guide-task",
                }}
                issue={{ identifier: "PAP-559", title: "Recreate this wireframe on pages Paperclip", status: status === "succeeded" ? "done" : "in_progress" }}
              />
            ))}
          </div>
          <p className="text-xs text-muted-foreground">The dashboard and Live runs page use the same compact cards. In-progress task icons animate across the app, including between runs, to represent task workflow status. Live indicators report active execution. Open a run to view its status and transcript.</p>
        </SubSection>
        <SubSection title="Standard Card">
          <Card>
            <CardHeader>
              <CardTitle>Card Title</CardTitle>
              <CardDescription>Card description with supporting text.</CardDescription>
            </CardHeader>
            <CardContent>
              <p className="text-sm">Card content goes here. This is the main body area.</p>
            </CardContent>
            <CardFooter className="gap-2">
              <Button size="sm">Action</Button>
              <Button variant="outline" size="sm">Cancel</Button>
            </CardFooter>
          </Card>
        </SubSection>

        <SubSection title="Metric Cards">
          <div className="grid md:grid-cols-2 xl:grid-cols-4 gap-4">
            <MetricCard icon={Bot} value={12} label="Active Agents" description="+3 this week" />
            <MetricCard icon={CircleDot} value={48} label="Open Issues" />
            <MetricCard icon={DollarSign} value="$1,234" label="Monthly Cost" description="Under budget" />
            <MetricCard icon={Zap} value="99.9%" label="Uptime" />
          </div>
        </SubSection>
      </Section>

      {/* ============================================================ */}
      {/*  TABS                                                         */}
      {/* ============================================================ */}
      <Section title="Tabs">
        <SubSection title="Default (pill) variant">
          <Tabs defaultValue="overview">
            <TabsList>
              <TabsTrigger value="overview">Overview</TabsTrigger>
              <TabsTrigger value="runs">Runs</TabsTrigger>
              <TabsTrigger value="config">Config</TabsTrigger>
              <TabsTrigger value="costs">Costs</TabsTrigger>
            </TabsList>
            <TabsContent value="overview">
              <p className="text-sm text-muted-foreground py-4">Overview tab content.</p>
            </TabsContent>
            <TabsContent value="runs">
              <p className="text-sm text-muted-foreground py-4">Runs tab content.</p>
            </TabsContent>
            <TabsContent value="config">
              <p className="text-sm text-muted-foreground py-4">Config tab content.</p>
            </TabsContent>
            <TabsContent value="costs">
              <p className="text-sm text-muted-foreground py-4">Costs tab content.</p>
            </TabsContent>
          </Tabs>
        </SubSection>

        <SubSection title="Line variant">
          <Tabs defaultValue="summary">
            <TabsList variant="line">
              <TabsTrigger value="summary">Summary</TabsTrigger>
              <TabsTrigger value="details">Details</TabsTrigger>
              <TabsTrigger value="comments">Comments</TabsTrigger>
            </TabsList>
            <TabsContent value="summary">
              <p className="text-sm text-muted-foreground py-4">Summary content with underline tabs.</p>
            </TabsContent>
            <TabsContent value="details">
              <p className="text-sm text-muted-foreground py-4">Details content.</p>
            </TabsContent>
            <TabsContent value="comments">
              <p className="text-sm text-muted-foreground py-4">Comments content.</p>
            </TabsContent>
          </Tabs>
        </SubSection>
      </Section>

      {/* ============================================================ */}
      {/*  ENTITY ROWS                                                  */}
      {/* ============================================================ */}
      <Section title="Entity Rows">
        <div className="border border-border rounded-md">
          <EntityRow
            leading={
              <>
                <StatusIcon status="in_progress" />
                {/* PAP-411: PriorityIcon hidden behind SHOW_TASK_PRIORITY_UI. */}
                {SHOW_TASK_PRIORITY_UI && <PriorityIcon priority="high" />}
              </>
            }
            identifier="PAP-001"
            title="Implement authentication flow"
            subtitle="Responsible: Agent Alpha"
            trailing={<IssueStatusBadge status="in_progress" />}
            onClick={() => {}}
          />
          <EntityRow
            leading={
              <>
                <StatusIcon status="done" />
                {SHOW_TASK_PRIORITY_UI && <PriorityIcon priority="medium" />}
              </>
            }
            identifier="PAP-002"
            title="Set up CI/CD pipeline"
            subtitle="Completed 2 days ago"
            trailing={<IssueStatusBadge status="done" />}
            onClick={() => {}}
          />
          <EntityRow
            leading={
              <>
                <StatusIcon status="todo" />
                {SHOW_TASK_PRIORITY_UI && <PriorityIcon priority="low" />}
              </>
            }
            identifier="PAP-003"
            title="Write API documentation"
            trailing={<IssueStatusBadge status="todo" />}
            onClick={() => {}}
          />
          <EntityRow
            leading={
              <>
                <StatusIcon status="blocked" />
                {SHOW_TASK_PRIORITY_UI && <PriorityIcon priority="critical" />}
              </>
            }
            identifier="PAP-004"
            title="Deploy to production"
            subtitle="Blocked by PAP-001"
            trailing={<IssueStatusBadge status="blocked" />}
            selected
          />
        </div>
        <SubSection title="Membership action">
          <div className="border border-border rounded-md">
            <EntityRow
              title="Joined resource"
              subtitle="Hover or focus the row to reveal the reserved action slot."
              className="group"
              trailing={
                <MembershipAction
                  state="joined"
                  resourceName="Joined resource"
                  onJoin={() => {}}
                  onLeave={() => {}}
                />
              }
            />
            <EntityRow
              title="Left resource"
              subtitle="Persistent action with dimmed row content."
              className="group text-foreground/55"
              trailing={
                <MembershipAction
                  state="left"
                  resourceName="Left resource"
                  onJoin={() => {}}
                  onLeave={() => {}}
                />
              }
            />
            <EntityRow
              title="Leaving resource"
              subtitle="Disabled while the optimistic mutation is pending."
              className="group text-foreground/55"
              trailing={
                <MembershipAction
                  state="left"
                  pending
                  pendingState="left"
                  resourceName="Leaving resource"
                  onJoin={() => {}}
                  onLeave={() => {}}
                />
              }
            />
            <EntityRow
              title="Joining resource"
              subtitle="The target state is visible immediately while the server confirms."
              className="group"
              trailing={
                <MembershipAction
                  state="joined"
                  pending
                  pendingState="joined"
                  resourceName="Joining resource"
                  onJoin={() => {}}
                  onLeave={() => {}}
                />
              }
            />
          </div>
        </SubSection>
      </Section>

      {/* ============================================================ */}
      {/*  FILTER BAR                                                   */}
      {/* ============================================================ */}
      <Section title="Filter Bar">
        <FilterBar
          filters={filters}
          onRemove={(key) => setFilters((f) => f.filter((x) => x.key !== key))}
          onClear={() => setFilters([])}
        />
        {filters.length === 0 && (
          <Button
            variant="outline"
            size="sm"
            onClick={() =>
              setFilters([
                { key: "status", label: "Status", value: "Active" },
                // PAP-411: priority filter demo row suppressed while SHOW_TASK_PRIORITY_UI is off.
                ...(SHOW_TASK_PRIORITY_UI
                  ? [{ key: "priority", label: "Priority", value: "High" } as FilterValue]
                  : []),
              ])
            }
          >
            Reset filters
          </Button>
        )}
      </Section>

      {/* ============================================================ */}
      {/*  AVATARS                                                      */}
      {/* ============================================================ */}
      <Section title="Avatars">
        <SubSection title="Sizes">
          <div className="flex items-center gap-3">
            <Avatar size="sm"><AvatarFallback>SM</AvatarFallback></Avatar>
            <Avatar><AvatarFallback>DF</AvatarFallback></Avatar>
            <Avatar size="lg"><AvatarFallback>LG</AvatarFallback></Avatar>
          </div>
        </SubSection>

        <SubSection title="Group">
          <AvatarGroup>
            <Avatar><AvatarFallback>A1</AvatarFallback></Avatar>
            <Avatar><AvatarFallback>A2</AvatarFallback></Avatar>
            <Avatar><AvatarFallback>A3</AvatarFallback></Avatar>
            <AvatarGroupCount>+5</AvatarGroupCount>
          </AvatarGroup>
        </SubSection>
      </Section>

      <Section title="App logos">
        <SubSection title="Official marks and runtime fallback">
          <div className="flex items-center gap-3">
            <AppLogo
              name="Notion"
              logoUrl="/brands/apps/notion.svg"
              darkLogoUrl="/brands/apps/notion-dark.svg"
              size={36}
            />
            <AppLogo name="Jira" logoUrl="/brands/apps/jira.svg" darkLogoUrl="/brands/apps/jira-dark.svg" size={44} />
            <AppLogo name="Fallback" logoUrl="/brands/apps/does-not-exist.svg" size={36} />
          </div>
        </SubSection>
      </Section>

      {/* ============================================================ */}
      {/*  IDENTITY                                                     */}
      {/* ============================================================ */}
      <Section title="Identity">
        <SubSection title="Sizes">
          <div className="flex items-center gap-6">
            <Identity name="Agent Alpha" size="sm" />
            <Identity name="Agent Alpha" />
            <Identity name="Agent Alpha" size="lg" />
          </div>
        </SubSection>

        <SubSection title="Initials derivation">
          <div className="flex flex-col gap-2">
            <Identity name="CEO Agent" size="sm" />
            <Identity name="Alpha" size="sm" />
            <Identity name="Quality Assurance Lead" size="sm" />
          </div>
        </SubSection>

        <SubSection title="Custom initials">
          <Identity name="Backend Service" initials="BS" size="sm" />
        </SubSection>
      </Section>

      {/* ============================================================ */}
      {/*  TOOLTIPS                                                     */}
      {/* ============================================================ */}
      <Section title="Tooltips">
        <div className="flex items-center gap-4">
          <Tooltip>
            <TooltipTrigger asChild>
              <Button variant="outline" size="sm">Hover me</Button>
            </TooltipTrigger>
            <TooltipContent>This is a tooltip</TooltipContent>
          </Tooltip>
          <Tooltip>
            <TooltipTrigger asChild>
              <Button variant="ghost" size="icon-sm"><Settings /></Button>
            </TooltipTrigger>
            <TooltipContent>Settings</TooltipContent>
          </Tooltip>
        </div>
      </Section>

      {/* ============================================================ */}
      {/*  DIALOG                                                       */}
      {/* ============================================================ */}
      <Section title="Dialog">
        <Dialog>
          <DialogTrigger asChild>
            <Button variant="outline">Open Dialog</Button>
          </DialogTrigger>
          <DialogContent>
            <DialogHeader>
              <DialogTitle>Dialog Title</DialogTitle>
              <DialogDescription>
                This is a sample dialog showing the standard layout with header, content, and footer.
              </DialogDescription>
            </DialogHeader>
            <div className="space-y-3">
              <div>
                <Label>Name</Label>
                <Input placeholder="Enter a name" className="mt-1.5" />
              </div>
              <div>
                <Label>Description</Label>
                <Textarea placeholder="Describe..." className="mt-1.5" />
              </div>
            </div>
            <DialogFooter>
              <Button variant="outline">Cancel</Button>
              <Button>Save</Button>
            </DialogFooter>
          </DialogContent>
        </Dialog>
      </Section>

      {/* ============================================================ */}
      {/*  EMPTY STATE                                                  */}
      {/* ============================================================ */}
      <Section title="Empty State">
        <div className="border border-border rounded-md">
          <EmptyState
            icon={Inbox}
            message="No items to show. Create your first one to get started."
            action="Create Item"
            onAction={() => {}}
          />
        </div>
      </Section>

      {/* ============================================================ */}
      {/*  PROGRESS BARS                                                */}
      {/* ============================================================ */}
      <Section title="Progress Bars (Budget)">
        <div className="space-y-3">
          {[
            { label: "Under budget (40%)", pct: 40, color: "bg-green-400" },
            { label: "Warning (75%)", pct: 75, color: "bg-yellow-400" },
            { label: "Over budget (95%)", pct: 95, color: "bg-red-400" },
          ].map(({ label, pct, color }) => (
            <div key={label} className="space-y-1">
              <div className="flex items-center justify-between">
                <span className="text-xs text-muted-foreground">{label}</span>
                <span className="text-xs font-mono">{pct}%</span>
              </div>
              <div className="w-full h-2 bg-muted rounded-full overflow-hidden">
                <div
                  className={`h-full rounded-full transition-(--tp-width-background-color) duration-150 ${color}`}
                  style={{ width: `${pct}%` }}
                />
              </div>
            </div>
          ))}
        </div>
      </Section>

      {/* ============================================================ */}
      {/*  LOG VIEWER                                                   */}
      {/* ============================================================ */}
      <Section title="Log Viewer">
        <div className="bg-neutral-950 rounded-lg p-3 font-mono text-xs max-h-80 overflow-y-auto">
          <div className="text-foreground">[12:00:01] INFO  Agent started successfully</div>
          <div className="text-foreground">[12:00:02] INFO  Processing task PAP-001</div>
          <div className="text-yellow-400">[12:00:05] WARN  Rate limit approaching (80%)</div>
          <div className="text-foreground">[12:00:08] INFO  Task PAP-001 completed</div>
          <div className="text-red-400">[12:00:12] ERROR Connection timeout to upstream service</div>
          <div className="text-blue-300">[12:00:12] SYS   Retrying connection in 5s...</div>
          <div className="text-foreground">[12:00:17] INFO  Reconnected successfully</div>
          <div className="flex items-center gap-1.5">
            <span className="relative flex h-1.5 w-1.5">
              <span className="absolute inline-flex h-full w-full rounded-full bg-blue-400 animate-pulse" />
              <span className="inline-flex h-full w-full rounded-full bg-blue-500" />
            </span>
            <span className="text-blue-600 dark:text-blue-400">Live</span>
          </div>
        </div>
      </Section>

      {/* ============================================================ */}
      {/*  PROPERTY ROW PATTERN                                         */}
      {/* ============================================================ */}
      <Section title="Property Row Pattern">
        <div className="border border-border rounded-md p-4 space-y-1 max-w-sm">
          <div className="flex items-center justify-between py-1.5">
            <span className="text-xs text-muted-foreground">Status</span>
            <StatusBadge status="active" />
          </div>
          {/* PAP-411: priority metadata row hidden behind SHOW_TASK_PRIORITY_UI. */}
          {SHOW_TASK_PRIORITY_UI && (
            <div className="flex items-center justify-between py-1.5">
              <span className="text-xs text-muted-foreground">Priority</span>
              <PriorityIcon priority="high" />
            </div>
          )}
          <div className="flex items-center justify-between py-1.5">
            <span className="text-xs text-muted-foreground">Responsible</span>
            <div className="flex items-center gap-1.5">
              <Avatar size="sm"><AvatarFallback>A</AvatarFallback></Avatar>
              <span className="text-xs">Agent Alpha</span>
            </div>
          </div>
          <div className="flex items-center justify-between py-1.5">
            <span className="text-xs text-muted-foreground">Created</span>
            <span className="text-xs">Jan 15, 2025</span>
          </div>
        </div>
      </Section>

      {/* ============================================================ */}
      {/*  NAVIGATION PATTERNS                                          */}
      {/* ============================================================ */}
      <Section title="Navigation Patterns">
        <SubSection title="Sidebar nav items">
          <p className="text-sm text-muted-foreground">
            Layout accepts sidebarSections to compose additional SidebarSection groups inside the shared sidebar.
            Use SidebarNavItem for each row, with sibling action buttons for starring or menus.
            Starred agent conversations precede recent conversations without a divider. Stars appear on hover or keyboard focus. Task breadcrumbs support leading identity and trailing actions beside the label, including single-item task headers; see the Agent chat Storybook.
          </p>
          <Card className="block w-60 p-3 space-y-0.5">
            <div className="flex items-center gap-2 px-3 py-1.5 rounded-md text-sm font-medium bg-accent text-accent-foreground">
              <LayoutDashboard className="h-4 w-4" />
              Dashboard
            </div>
            <div className="flex items-center gap-2 px-3 py-1.5 rounded-md text-sm font-medium text-muted-foreground hover:bg-accent/50 hover:text-accent-foreground cursor-pointer">
              <CircleDot className="h-4 w-4" />
              Issues
              <Badge variant="ghost" className="ml-auto bg-primary text-primary-foreground px-1.5">
                12
              </Badge>
            </div>
            <div className="flex items-center gap-2 px-3 py-1.5 rounded-md text-sm font-medium text-muted-foreground hover:bg-accent/50 hover:text-accent-foreground cursor-pointer">
              <Bot className="h-4 w-4" />
              Agents
            </div>
            <div className="flex items-center gap-2 px-3 py-1.5 rounded-md text-sm font-medium text-muted-foreground hover:bg-accent/50 hover:text-accent-foreground cursor-pointer">
              <Hexagon className="h-4 w-4" />
              Projects
            </div>
          </Card>
        </SubSection>

        <SubSection title="View toggle">
          <div className="flex items-center border border-border rounded-md w-fit">
            <button className="px-3 py-1.5 text-xs font-medium bg-accent text-foreground rounded-l-md">
              <ListTodo className="h-3.5 w-3.5 inline mr-1" />
              List
            </button>
            <button className="px-3 py-1.5 text-xs font-medium text-muted-foreground hover:bg-accent/50 rounded-r-md">
              <Target className="h-3.5 w-3.5 inline mr-1" />
              Org
            </button>
          </div>
        </SubSection>
      </Section>

      {/* ============================================================ */}
      {/*  GROUPED LIST (Issues pattern)                                */}
      {/* ============================================================ */}
      <Section title="Grouped List (Issues pattern)">
        <div>
          <div className="flex items-center gap-2 px-4 py-2 bg-muted/50 rounded-t-md">
            <StatusIcon status="in_progress" />
            <span className="text-sm font-medium">In Progress</span>
            <span className="text-xs text-muted-foreground ml-1">2</span>
          </div>
          <div className="border border-border rounded-b-md">
            {/* PAP-411: leading PriorityIcon hidden behind SHOW_TASK_PRIORITY_UI. */}
            <EntityRow
              leading={SHOW_TASK_PRIORITY_UI ? <PriorityIcon priority="high" /> : undefined}
              identifier="PAP-101"
              title="Build agent heartbeat system"
              onClick={() => {}}
            />
            <EntityRow
              leading={SHOW_TASK_PRIORITY_UI ? <PriorityIcon priority="medium" /> : undefined}
              identifier="PAP-102"
              title="Add cost tracking dashboard"
              onClick={() => {}}
            />
          </div>
        </div>
      </Section>

      {/* ============================================================ */}
      {/*  COMMENT THREAD PATTERN                                       */}
      {/* ============================================================ */}
      <Section title="Comment Thread Pattern">
        <div className="space-y-3 max-w-2xl">
          <h3 className="text-sm font-semibold">Comments (2)</h3>
          <div className="space-y-3">
            <div className="rounded-md border border-border p-3">
              <div className="flex items-center justify-between mb-1">
                <span className="text-xs font-medium text-muted-foreground">Agent</span>
                <span className="text-xs text-muted-foreground">Jan 15, 2025</span>
              </div>
              <p className="text-sm">Started working on the authentication module. Will need API keys configured.</p>
            </div>
            <div className="rounded-md border border-border p-3">
              <div className="flex items-center justify-between mb-1">
                <span className="text-xs font-medium text-muted-foreground">Human</span>
                <span className="text-xs text-muted-foreground">Jan 16, 2025</span>
              </div>
              <p className="text-sm">API keys have been added to the vault. Please proceed.</p>
            </div>
          </div>
          <div className="space-y-2">
            <Textarea placeholder="Leave a comment..." rows={3} />
            <Button size="sm">Comment</Button>
          </div>
        </div>
      </Section>

      {/* ============================================================ */}
      {/*  COST TABLE PATTERN                                           */}
      {/* ============================================================ */}
      <Section title="Cost Table Pattern">
        <div className="border border-border rounded-lg overflow-hidden">
          <table className="w-full text-xs">
            <thead className="border-b border-border bg-accent/20">
              <tr>
                <th className="text-left px-3 py-2 font-medium text-muted-foreground">Model</th>
                <th className="text-left px-3 py-2 font-medium text-muted-foreground">Tokens</th>
                <th className="text-left px-3 py-2 font-medium text-muted-foreground">Cost</th>
              </tr>
            </thead>
            <tbody>
              <tr className="border-b border-border">
                <td className="px-3 py-2">claude-sonnet-4-20250514</td>
                <td className="px-3 py-2 font-mono">1.2M</td>
                <td className="px-3 py-2 font-mono">$18.00</td>
              </tr>
              <tr className="border-b border-border">
                <td className="px-3 py-2">claude-haiku-4-20250506</td>
                <td className="px-3 py-2 font-mono">500k</td>
                <td className="px-3 py-2 font-mono">$1.25</td>
              </tr>
              <tr>
                <td className="px-3 py-2 font-medium">Total</td>
                <td className="px-3 py-2 font-mono">1.7M</td>
                <td className="px-3 py-2 font-mono font-medium">$19.25</td>
              </tr>
            </tbody>
          </table>
        </div>
      </Section>

      {/* ============================================================ */}
      {/*  SKELETONS                                                    */}
      {/* ============================================================ */}
      <Section title="Skeletons">
        <SubSection title="Individual">
          <div className="space-y-2">
            <Skeleton className="h-4 w-48" />
            <Skeleton className="h-8 w-full max-w-sm" />
            <Skeleton className="h-20 w-full" />
          </div>
        </SubSection>

        <SubSection title="Page Skeleton (list)">
          <div className="border border-border rounded-md p-4">
            <PageSkeleton variant="list" />
          </div>
        </SubSection>

        <SubSection title="Page Skeleton (detail)">
          <div className="border border-border rounded-md p-4">
            <PageSkeleton variant="detail" />
          </div>
        </SubSection>
      </Section>

      {/* ============================================================ */}
      {/*  SEPARATOR                                                    */}
      {/* ============================================================ */}
      <Section title="Separator">
        <div className="space-y-4">
          <p className="text-sm text-muted-foreground">Horizontal</p>
          <Separator />
          <div className="flex items-center gap-4 h-8">
            <span className="text-sm">Left</span>
            <Separator orientation="vertical" />
            <span className="text-sm">Right</span>
          </div>
        </div>
      </Section>

      {/* ============================================================ */}
      {/*  ICON REFERENCE                                               */}
      {/* ============================================================ */}
      {/*  TEAM CATALOG                                                 */}
      {/* ============================================================ */}
      <Section title="Team Catalog">
        <p className="text-sm text-muted-foreground">
          Components from the Team Catalog browse/install surface (<code className="font-mono text-xs">/teams-catalog</code>).
          Fixtures are shared with the Storybook stories.
        </p>

        <SubSection title="TeamRow (browse list)">
          <div className="w-(--sz-28rem) rounded-md border border-border">
            <div className="px-3 py-2 text-(length:--text-micro) font-semibold uppercase tracking-wide text-muted-foreground">
              Bundled · 1
            </div>
            <TeamRow team={sampleTeam} selected onSelect={() => {}} />
            <div className="px-3 py-2 text-(length:--text-micro) font-semibold uppercase tracking-wide text-muted-foreground">
              Optional · 2
            </div>
            <TeamRow team={optionalTeam} selected={false} onSelect={() => {}} />
            <div className="px-3 py-2 text-(length:--text-micro) font-semibold uppercase tracking-wide text-muted-foreground">
              Installed · 2
            </div>
            <TeamRow team={sampleTeam} selected={false} onSelect={() => {}} installed={outOfDateInstalledState} />
            <TeamRow team={warnTeam} selected={false} onSelect={() => {}} installed={currentInstalledState} />
          </div>
          <p className="mt-2 text-xs text-muted-foreground">
            Installed teams collapse under <code className="font-mono">INSTALLED · N</code>; an out-of-date
            install (server <code className="font-mono">originHash</code> ≠ catalog <code className="font-mono">contentHash</code>)
            shows the amber <code className="font-mono">↑</code> badge (PAP-10256).
          </p>
        </SubSection>

        <SubSection title="TeamCard (onboarding grid)">
          <p className="text-xs text-muted-foreground">
            Square tile for the onboarding &ldquo;Pick a starter team&rdquo; grid. Selected tile gets{" "}
            <code className="font-mono">ring-2 ring-ring</code>. Drives the{" "}
            <code className="font-mono">useInstallTeamCatalogEntry</code> simplified flow.
          </p>
          <TeamCardShowcase />
        </SubSection>

        <SubSection title="TeamHierarchyPreview">
          <div className="max-w-md">
            <TeamHierarchyPreview team={sampleTeam} />
          </div>
        </SubSection>

        <SubSection title="RequiredSkillsList">
          <div className="max-w-xl">
            <RequiredSkillsList skills={sampleTeam.requiredSkills} />
          </div>
        </SubSection>

        <SubSection title="EnvInputsList">
          <div className="max-w-xl">
            <EnvInputsList inputs={sampleTeam.envInputs} />
          </div>
        </SubSection>

        <SubSection title="ExternalSourcesList">
          <div className="max-w-xl">
            <ExternalSourcesList sources={sampleTeam.sourceRefs} />
          </div>
        </SubSection>

        <SubSection title="Source policy step (StepSourcePolicy)">
          <div className="max-w-xl rounded-md border border-border p-4">
            <StepSourcePolicy
              team={warnTeam}
              allowExternalSources={allowExternal}
              allowUnpinnedOptionalSources={allowUnpinned}
              allowLocalPathSources={allowLocalPath}
              onChange={(key, value) => {
                if (key === "external") setAllowExternal(value);
                if (key === "unpinned") setAllowUnpinned(value);
                if (key === "localPath") setAllowLocalPath(value);
              }}
            />
          </div>
        </SubSection>

        <SubSection title="Skill plan step (StepSkillPlan)">
          <div className="max-w-xl rounded-md border border-border p-4">
            <StepSkillPlan team={sampleTeam} preparations={sampleSkillPreparations} />
          </div>
        </SubSection>
      </Section>

      {/* ============================================================ */}
      <Section title="Common Icons (Lucide)">
        <div className="grid grid-cols-4 md:grid-cols-6 gap-4">
          {[
            ["Inbox", Inbox],
            ["ListTodo", ListTodo],
            ["CircleDot", CircleDot],
            ["Hexagon", Hexagon],
            ["Target", Target],
            ["LayoutDashboard", LayoutDashboard],
            ["Bot", Bot],
            ["DollarSign", DollarSign],
            ["History", History],
            ["Search", Search],
            ["Plus", Plus],
            ["Trash2", Trash2],
            ["Settings", Settings],
            ["User", User],
            ["Mail", Mail],
            ["Upload", Upload],
            ["Zap", Zap],
          ].map(([name, Icon]) => {
            const LucideIcon = Icon as React.FC<{ className?: string }>;
            return (
              <div key={name as string} className="flex flex-col items-center gap-1.5 p-2">
                <LucideIcon className="h-4 w-4 text-muted-foreground" />
                <span className="text-(length:--text-nano) text-muted-foreground font-mono">{name as string}</span>
              </div>
            );
          })}
        </div>
      </Section>

      {/* ============================================================ */}
      {/*  KEYBOARD SHORTCUTS                                           */}
      {/* ============================================================ */}
      <Section title="Keyboard Shortcuts">
        <div className="border border-border rounded-md divide-y divide-border text-sm">
          {[
            ["Cmd+K / Ctrl+K", "Open Command Palette"],
            ["C", "New Issue (outside inputs)"],
            ["[", "Toggle Sidebar"],
            ["]", "Toggle Properties Panel"],

            ["Cmd+Enter / Ctrl+Enter", "Submit markdown comment"],
          ].map(([key, desc]) => (
            <div key={key} className="flex items-center justify-between px-4 py-2">
              <span className="text-muted-foreground">{desc}</span>
              <kbd className="px-2 py-0.5 text-xs font-mono bg-muted rounded border border-border">
                {key}
              </kbd>
            </div>
          ))}
        </div>
      </Section>

      <Section title="Issue Output Surface">
        <SubSection title="Multiple outputs (primary video + 'Also produced')">
          <IssueOutputSection workProducts={DESIGN_GUIDE_OUTPUTS} />
        </SubSection>
        <SubSection title="Degraded output (invalid / failed attachment metadata)">
          <IssueOutputSection workProducts={DESIGN_GUIDE_DEGRADED_OUTPUTS} />
        </SubSection>
        <SubSection title="Empty state">
          <p className="text-xs text-muted-foreground">
            When an issue has produced no artifact work products, the Output section renders nothing
            at all (no placeholder card).
          </p>
        </SubSection>
      </Section>

      {/* ============================================================ */}
      {/*  TOOLS & ACCESS (PAP-10389)                                   */}
      {/* ============================================================ */}
      <Section title="Tools & Access">
        <SubSection title="EnforcementBanner — default / denied-detected">
          <div className="space-y-3">
            <EnforcementBanner companyId="" forceVariant="default" recentDenialCount={0} />
            <EnforcementBanner companyId="" forceVariant="denied-detected" recentDenialCount={3} />
          </div>
          <p className="mt-2 text-xs text-muted-foreground">
            Persistent at the top of the Tools &amp; Access surface. Tints to <code>denied-detected</code> when
            governed tool calls were denied or failed in the last hour. Observability only — enforcement lives
            in the tool gateway.
          </p>
        </SubSection>

        <SubSection title="EnforcementBanner — presentational tones (info / warning / error)">
          <div className="space-y-3">
            <EnforcementBanner
              tone="info"
              title="Effective access — server resolved."
              body="This is exactly what the tool gateway will accept. Profile and policy edits reflect within ~5s; the prompt cannot expand it."
            />
            <EnforcementBanner
              tone="warning"
              title="Local stdio is local code execution, not a security sandbox."
              body="A local-stdio slot runs with the orchestrator's privileges. Only bind trusted commands; quarantine anything you would not run yourself."
            />
            <EnforcementBanner
              tone="error"
              title="Runtime failed closed."
              body="The supervisor is restarting (attempt 2/3). The gateway returns runtime-error and the agent does not see partial output."
            />
          </div>
          <p className="mt-2 text-xs text-muted-foreground">
            Static governance copy with a tone. Used for the PAP-10400 trust-tier banner on Runtime and the
            effective-access banner on Agent → Tools. Pass <code>title</code>/<code>body</code> and an optional{" "}
            <code>icon</code>.
          </p>
        </SubSection>

        <SubSection title="Action approval card — pending / stale (surfaces 11/12)">
          <div className="grid gap-4 lg:grid-cols-2">
            <ActionCard
              toolName="slack.post_message"
              risk="medium"
              isWrite
              binding={{
                application: "Slack",
                manifestVersion: "2.4.1",
                connection: "https://slack.com/api · acme-workspace",
                catalogSha256: "sha256:9f86d081884c7d659a2feaa0c55ad015a3bf4f1b2b0b822cd15d6c15b0f00a08",
                payloadSha256: "sha256:2c26b46b68ffc68ff99b453c1d30413413422d706483bfa0f98a5e886266e7ae",
              }}
              input={{ channel: "#launch", text: "Deploy v2 is live 🎉", unfurl_links: false }}
              reason="This tool can write to your workspace, so a human signs off before the agent posts."
              policyNumber={7}
              expiresInLabel="expires in 23h 51m"
            />
            <ActionCard
              variant="stale"
              toolName="slack.post_message"
              risk="medium"
              isWrite
              binding={{
                application: "Slack",
                manifestVersion: "2.4.1",
                connection: "https://slack.com/api · acme-workspace",
                catalogSha256: "sha256:7d793037a0760186574b0282f2f435e7a4b1b2b0b822cd15d6c15b0f00a0e3f1",
                previousCatalogSha256: "sha256:9f86d081884c7d659a2feaa0c55ad015a3bf4f1b2b0b822cd15d6c15b0f00a08",
                payloadSha256: "sha256:2c26b46b68ffc68ff99b453c1d30413413422d706483bfa0f98a5e886266e7ae",
              }}
              input={{ channel: "#launch", text: "Deploy v2 is live 🎉", unfurl_links: false }}
              reason="This tool can write to your workspace, so a human signs off before the agent posts."
              policyNumber={7}
              expiresInLabel="expires in 18h 02m"
            />
          </div>
          <p className="mt-2 text-xs text-muted-foreground">
            Signed payload sha256 + expiry surface on every variant (PAP-10400). The{" "}
            <code>stale</code> variant tints the border amber, banners the catalog-hash mismatch, strikes through
            the previous hash next to the current one, and renders <code>Approve</code> disabled until the request
            is re-issued.
          </p>
        </SubSection>

        <SubSection title="Action approval card — mobile (390×844, surface 99)">
          <div className="w-(--sz-390px) max-w-full rounded-xl border border-border bg-background p-3">
            <ActionCardMobile
              toolName="slack.post_message"
              risk="medium"
              isWrite
              binding={{
                application: "Slack",
                manifestVersion: "2.4.1",
                connection: "https://slack.com/api · acme-workspace",
                catalogSha256: "sha256:9f86d081884c7d659a2feaa0c55ad015a3bf4f1b2b0b822cd15d6c15b0f00a08",
                payloadSha256: "sha256:2c26b46b68ffc68ff99b453c1d30413413422d706483bfa0f98a5e886266e7ae",
              }}
              input={{ channel: "#launch", text: "Deploy v2 is live 🎉" }}
              reason="This tool can write to your workspace, so a human signs off before the agent posts."
              policyNumber={7}
              expiresInLabel="expires in 23h 51m"
            />
          </div>
          <p className="mt-2 text-xs text-muted-foreground">
            Identical content; the three buttons stack full-width in the order Approve / Deny / Edit &amp; re-sign,
            and the bindings table uses a 70px label column.
          </p>
        </SubSection>

        <SubSection title="BindingsTable (reused in the audit row drilldown)">
          <BindingsTable
            rows={[
              { label: "Application", value: "Slack · manifest v2.4.1" },
              { label: "Connection", value: "https://slack.com/api · acme-workspace", mono: true },
              { label: "Catalog", value: "sha256:9f86d081…f00a08", mono: true },
              { label: "Payload", value: "sha256:2c26b46b…66e7ae", mono: true },
            ]}
          />
          <p className="mt-2 text-xs text-muted-foreground">
            Two-column key/value block with mono values. Lives inside <code>ActionCard</code> and is reused
            standalone in the audit row drilldown.
          </p>
        </SubSection>

        <SubSection title="Tool-access status keys (StatusBadge)">
          <div className="flex flex-wrap items-center gap-2">
            {[
              "allowed", "denied", "block", "require-approval", "redacted", "rate-limit",
              "deferred", "hidden", "quarantined", "healthy", "degraded", "runtime-error", "unchecked",
            ].map((s) => (
              <StatusBadge key={s} status={s} />
            ))}
          </div>
          <p className="mt-2 text-xs text-muted-foreground">
            Policy decisions, connection/runtime health, and catalog quarantine all route through the canonical{" "}
            <code>StatusBadge</code> keys defined in <code>lib/status-colors</code>.
          </p>
        </SubSection>

        <SubSection title="EmptyState (canonical, with description + action)">
          <EmptyState
            icon={Inbox}
            message="No connections yet"
            description="Add a connection to an application to configure credentials and discover its tools."
            action="New connection"
            onAction={() => {}}
          />
        </SubSection>
      </Section>

      <Section title="Composio Services">
        <p className="text-sm text-muted-foreground">
          A broker connection (Composio) fronts many services, so its detail page lists toolkits
          with per-service state instead of one credential. Row state comes from Composio's own
          account status, which is why there is a fourth <code>attention</code> state alongside the
          three the design asks for: an expired credential is neither connected nor still settling.
        </p>
        <SubSection title="Row states">
          <ServicesList
            rows={DESIGN_GUIDE_COMPOSIO_ROWS}
            busySlug={null}
            onConnect={() => {}}
            onRecheck={() => {}}
            onDisconnect={() => {}}
          />
        </SubSection>
        <SubSection title="Busy row">
          <ServicesList
            rows={[DESIGN_GUIDE_COMPOSIO_ROWS[2]!]}
            busySlug={DESIGN_GUIDE_COMPOSIO_ROWS[2]!.toolkitSlug}
            onConnect={() => {}}
            onRecheck={() => {}}
            onDisconnect={() => {}}
          />
        </SubSection>
        <SubSection title="Provenance chip">
          <p className="mb-2 text-xs text-muted-foreground">
            Shown wherever a brokered child connection appears, so the parent/child coupling is
            legible. Links to the broker's Services tab when the parent is known.
          </p>
          <div className="flex items-center gap-3">
            <ComposioProvenanceChip
              connection={{
                config: { provider: "composio", parentConnectionId: "parent-1", toolkitSlug: "github" },
              }}
            />
            <ComposioProvenanceChip
              connection={{ config: { provider: "composio", toolkitSlug: "gmail" } }}
            />
          </div>
        </SubSection>
      </Section>

      <Section title="Source Repositories">
        <SubSection title="Empty and disconnected">
          <RepositoryEditor selected={[]} onChange={() => {}} state="disconnected" onConnect={() => {}} onRetry={() => {}} />
        </SubSection>
        <SubSection title="Selected and searchable">
          <RepositoryEditor selected={[{ id: "1", fullName: "paperclipai/paperclip", url: "https://github.com/paperclipai/paperclip", connections: ["Your GitHub"] }]}
            available={[{ id: "2", fullName: "paperclipai/docs", url: "https://github.com/paperclipai/docs", connections: ["Company GitHub"] }]}
            onChange={() => {}} onConnect={() => {}} onRetry={() => {}} />
        </SubSection>
        <p className="text-sm text-muted-foreground">Loading, errors, empty search, mobile, and short viewports are covered in the Project repos Storybook stories.</p>
      </Section>

      <Section title="Environment Variables Editor">
        <p className="text-sm text-muted-foreground">
          Reusable env-var editor (agents, projects, environments, routines). One shared grid, an
          in-field Text/Secret source switch, a fuzzy secret picker with a pinned “Create secret”
          item, automatic sensitive-value detection, and inline secret-health warnings. See the
          Storybook <span className="font-mono">Product/Environment Variables Editor</span> stories
          for all 10 states.
        </p>
        <EnvironmentVariablesEditorShowcase />
      </Section>

      <Section title="Tasks created from a task">
        <SubSection title="Subtasks and created work are independent">
          <div className="max-w-xl">
            <TaskDetailTasksPanel
              subtasks={[DESIGN_GUIDE_TASK]}
              createdTasks={[
                { ...DESIGN_GUIDE_TASK, projectId: "design-board", project: { id: "design-board", name: "Board UI" } as Issue["project"] },
                { ...DESIGN_GUIDE_TASK, id: "design-followup", identifier: "PAP-428", title: "Write release notes", status: "todo", projectId: null },
              ]}
              projects={[]}
            />
          </div>
        </SubSection>
        <SubSection title="Empty, loading and failed">
          <TaskDetailTasksPanel subtasks={[]} createdTasks={[]} projects={[]} />
          <TaskDetailTasksPanel subtasks={[]} createdTasks={[]} projects={[]} isLoading />
          <TaskDetailTasksPanel subtasks={[]} createdTasks={[]} projects={[]} hasError onRetry={() => {}} />
        </SubSection>
      </Section>

      <Section title="Execution recovery">
        <p className="text-sm text-muted-foreground">
          Recovery runs in the background. Task lists keep their ordinary status without
          execution badges. Active transcript headers keep saying Working during automatic
          recovery. Recovery decisions and attempts belong in the run log;
          there is no execution status card or reconciliation form.
        </p>
      </Section>

      <Section title="Saved provider API keys">
        <SavedProviderKeySelect options={[{ id: "example", label: "Claude API key (Your key)", binding: { type: "user_secret_ref", key: "ANTHROPIC_API_KEY", version: "latest" } }]} value="example" onChange={() => {}} loading={false} error={false} />
        <SavedProviderKeySelect options={[]} value="" onChange={() => {}} loading error={false} />
        <SavedProviderKeySelect options={[]} value="" onChange={() => {}} loading={false} error />
      </Section>

      <Section title="Connection Intent">
        <p className="text-sm text-muted-foreground">
          The task card is the dialog host for the shared connection setup flow. Provider forms,
          validation, OAuth, access selection, and completion come from the same feature module as
          the full-page Apps setup; this card owns only audience, dialog, and task refresh behavior.
          Pending connections stay in the timeline beside a usable composer. The independently
          addressable Connections/In-task connections stories cover access, OAuth recovery, narrow
          layouts, completion, and historical outcomes.
        </p>
        <div className="grid gap-4 xl:grid-cols-3">
          <IssueThreadInteractionCard
            interaction={pendingConnectionIntentInteraction}
            currentUserId={issueThreadInteractionFixtureMeta.currentUserId}
          />
          <IssueThreadInteractionCard
            interaction={retryConnectionIntentInteraction}
            currentUserId={issueThreadInteractionFixtureMeta.currentUserId}
          />
          <IssueThreadInteractionCard
            interaction={connectedConnectionIntentInteraction}
            currentUserId={issueThreadInteractionFixtureMeta.currentUserId}
          />
        </div>
      </Section>

      <Section title="Resizable Panels">
        <p className="text-sm text-muted-foreground">
          Design-system wrapper over <span className="font-mono">react-resizable-panels</span>{" "}
          (Skill Studio D2). Drag a handle to resize; panels accept percentage or pixel
          (<span className="font-mono">minSize="240px"</span>) constraints and the middle panel is
          collapsible. Use anywhere a split view is needed.
        </p>
        <div className="h-48 max-w-2xl overflow-hidden rounded-md border border-border">
          <ResizablePanelGroup>
            <ResizablePanel id="a" minSize="120px" className="bg-muted/30">
              <div className="flex h-full items-center justify-center text-xs text-muted-foreground">
                Panel A
              </div>
            </ResizablePanel>
            <ResizableHandle />
            <ResizablePanel id="b" minSize="120px" collapsible collapsedSize="40px" className="bg-muted/10">
              <div className="flex h-full items-center justify-center text-xs text-muted-foreground">
                Panel B (collapsible)
              </div>
            </ResizablePanel>
            <ResizableHandle />
            <ResizablePanel id="c" minSize="120px" className="bg-muted/30">
              <div className="flex h-full items-center justify-center text-xs text-muted-foreground">
                Panel C
              </div>
            </ResizablePanel>
          </ResizablePanelGroup>
        </div>
      </Section>

      {/* ============================================================ */}
      {/*  INLINE BANNER + BUILT-IN AGENTS                              */}
      {/* ============================================================ */}
      <Section title="Inline Banner">
        <p className="text-sm text-muted-foreground">
          Token-backed full-width notice (<span className="font-mono">brandBanner</span> tones). Use{" "}
          <span className="font-mono">info</span> for provenance/context and{" "}
          <span className="font-mono">warning</span> for paused/attention. Supports an optional bold
          title and a trailing actions slot. Replaces hand-rolled{" "}
          <span className="font-mono">bg-yellow-*</span>/<span className="font-mono">bg-blue-*</span>{" "}
          banners.
        </p>
        <div className="space-y-3">
          <InlineBanner
            tone="info"
            title="Built-in agent"
            actions={<Button variant="outline" size="sm">Reset to defaults</Button>}
          >
            Ships with Paperclip and powers <strong>Briefs</strong>. It can be paused but not deleted.
          </InlineBanner>
          <InlineBanner
            tone="warning"
            title="Briefs is paused."
            actions={
              <>
                <Button variant="ghost" size="sm">View agent</Button>
                <Button size="sm">Resume agent</Button>
              </>
            }
          >
            Its built-in agent was paused 2 days ago, so new briefs aren't being generated.
          </InlineBanner>
          <InlineBanner
            tone="danger"
            title="Summary generation failed."
            actions={<Button size="sm">Retry</Button>}
          >
            The linked issue reached a terminal state before a summary was written.
          </InlineBanner>
          <InlineBanner tone="info" compact>
            Compact variant for embedding inside dialogs and modals.
          </InlineBanner>
        </div>
      </Section>

      <Section title="File tree selection">
        <p className="text-sm text-muted-foreground">Cached file browsers include folders in selection, including empty folders. Other file trees select files by default.</p>
        <FileTree
          nodes={[{ name: "empty", path: "empty", kind: "dir", children: [] }, { name: "notes.txt", path: "notes.txt", kind: "file", children: [] }]}
          selectedFile={null} expandedDirs={new Set()} checkedFiles={checkedFilePaths}
          onSelectFile={() => {}} onToggleDir={() => {}} includeDirectoriesInSelection
          onToggleCheck={(path) => setCheckedFilePaths((before) => {
            const next = new Set(before);
            if (next.has(path)) next.delete(path); else next.add(path);
            return next;
          })}
        />
      </Section>

      <Section title="AI Connections">
        <AiConnectionDesignExamples />
      </Section>

      <Section title="Built-in Agent Lifecycle Chips">
        <p className="text-sm text-muted-foreground">
          A derived lifecycle chip (amber) for attention states. The lifecycle chip is separate from
          the agent status vocabulary and only shows for{" "}
          <span className="font-mono">needs_setup</span> / <span className="font-mono">pending_approval</span>.
        </p>
        <div className="flex flex-wrap items-center gap-4">
          <BuiltInLifecycleChip status="needs_setup" />
          <BuiltInLifecycleChip status="pending_approval" />
          <BuiltInLifecycleChip status="needs_setup" compact />
        </div>
        <p className="mt-3 text-sm text-muted-foreground">
          <span className="font-mono">&lt;BuiltInAgentGate agentKey&gt;</span> composes{" "}
          <span className="font-mono">PageSkeleton</span> + <span className="font-mono">EmptyState</span>{" "}
          + <span className="font-mono">InlineBanner</span> to render the loading / setup /
          pending-approval / paused / ready states of a feature that depends on a built-in agent.
        </p>
      </Section>
    </div>
  );
}