feat: add current path

This resolves #20

js/src/App.tsx

@@ -9,6 +9,7 @@ import {
   QueryClientProvider,
 } from '@tanstack/react-query'
 import PathResolver from "./pages/path-resolver";
+import { SettingsPage } from "./pages/settings-page";
 
 const queryClient = new QueryClient();
 
@@ -40,7 +41,8 @@ function AuthenticatedApp() {
   return (
     <HashRouter>
       <Routes>
-        <Route path="*" element={<PathResolver />} />
+        <Route path="/settings" element={<SettingsPage />} />
+        <Route path="/*" element={<PathResolver />} />
       </Routes>
     </HashRouter>
   );

js/src/components/ui/breadcrumb.tsx

@@ -0,0 +1,122 @@
+import * as React from "react"
+import { Slot } from "radix-ui"
+
+import { cn } from "@/lib/utils"
+import { ChevronRightIcon, MoreHorizontalIcon } from "lucide-react"
+
+function Breadcrumb({ className, ...props }: React.ComponentProps<"nav">) {
+  return (
+    <nav
+      aria-label="breadcrumb"
+      data-slot="breadcrumb"
+      className={cn(className)}
+      {...props}
+    />
+  )
+}
+
+function BreadcrumbList({ className, ...props }: React.ComponentProps<"ol">) {
+  return (
+    <ol
+      data-slot="breadcrumb-list"
+      className={cn(
+        "flex flex-wrap items-center gap-1.5 text-sm wrap-break-word text-muted-foreground",
+        className
+      )}
+      {...props}
+    />
+  )
+}
+
+function BreadcrumbItem({ className, ...props }: React.ComponentProps<"li">) {
+  return (
+    <li
+      data-slot="breadcrumb-item"
+      className={cn("inline-flex items-center gap-1", className)}
+      {...props}
+    />
+  )
+}
+
+function BreadcrumbLink({
+  asChild,
+  className,
+  ...props
+}: React.ComponentProps<"a"> & {
+  asChild?: boolean
+}) {
+  const Comp = asChild ? Slot.Root : "a"
+
+  return (
+    <Comp
+      data-slot="breadcrumb-link"
+      className={cn("transition-colors hover:text-foreground", className)}
+      {...props}
+    />
+  )
+}
+
+function BreadcrumbPage({ className, ...props }: React.ComponentProps<"span">) {
+  return (
+    <span
+      data-slot="breadcrumb-page"
+      role="link"
+      aria-disabled="true"
+      aria-current="page"
+      className={cn("font-normal text-foreground", className)}
+      {...props}
+    />
+  )
+}
+
+function BreadcrumbSeparator({
+  children,
+  className,
+  ...props
+}: React.ComponentProps<"li">) {
+  return (
+    <li
+      data-slot="breadcrumb-separator"
+      role="presentation"
+      aria-hidden="true"
+      className={cn("[&>svg]:size-3.5", className)}
+      {...props}
+    >
+      {children ?? (
+        <ChevronRightIcon />
+      )}
+    </li>
+  )
+}
+
+function BreadcrumbEllipsis({
+  className,
+  ...props
+}: React.ComponentProps<"span">) {
+  return (
+    <span
+      data-slot="breadcrumb-ellipsis"
+      role="presentation"
+      aria-hidden="true"
+      className={cn(
+        "flex size-5 items-center justify-center [&>svg]:size-4",
+        className
+      )}
+      {...props}
+    >
+      <MoreHorizontalIcon
+      />
+      <span className="sr-only">More</span>
+    </span>
+  )
+}
+
+export {
+  Breadcrumb,
+  BreadcrumbList,
+  BreadcrumbItem,
+  BreadcrumbLink,
+  BreadcrumbPage,
+  BreadcrumbSeparator,
+  BreadcrumbEllipsis,
+}

js/src/features/network-selector.tsx

@@ -1,29 +1,51 @@
 import { useNavigate } from "react-router-dom";
-import { LogOut } from "lucide-react";
-import { Button } from "@/components/ui/button";
-import { Muted } from "@/components/ui/typography";
-import {
-  Select,
-  SelectContent,
-  SelectItem,
-  SelectTrigger,
-  SelectValue,
-} from "@/components/ui/select";
-import { useAuthStore } from "@/stores/auth-store";
-import { WindowControls } from "@/components/window-controls";
-import { useQuery } from "@tanstack/react-query";
-import { apiClient } from "@/api/client";
+import { Users } from "lucide-react";
+import { Small } from "@/components/ui/typography";
+import { Avatar, AvatarFallback } from "@/components/ui/avatar";
+import { ScrollArea } from "@/components/ui/scroll-area";
+import { Separator } from "@/components/ui/separator";
+import { useNetworks } from "@/hooks/use-networks";
 import { Progress } from "@/components/ui/progress";
+import type { Network } from "@/api/types";
+
+function NetworkRow({
+  network,
+  onClick,
+}: {
+  network: Network;
+  onClick: () => void;
+}) {
+  const initials = network.name.slice(0, 2).toUpperCase();
+  const memberCount = network.humans.length;
+
+  return (
+    <button
+      type="button"
+      onClick={onClick}
+      className="flex w-full items-center gap-3 px-4 py-3 text-left transition-colors hover:bg-accent"
+    >
+      <Avatar>
+        <AvatarFallback className="bg-primary/10 text-primary font-medium">
+          {initials}
+        </AvatarFallback>
+      </Avatar>
+      <div className="min-w-0 flex-1">
+        <p className="truncate text-sm font-medium">{network.name}</p>
+        <div className="text-muted-foreground flex items-center gap-1">
+          <Users className="size-3" />
+          <Small className="text-muted-foreground">
+            {memberCount} {memberCount === 1 ? "member" : "members"}
+          </Small>
+        </div>
+      </div>
+    </button>
+  );
+}
 
 export function NetworkSelector() {
   const navigate = useNavigate();
-  const signOut = useAuthStore((s) => s.signOut);
-  const user = useAuthStore((s) => s.user);
 
-  const { data, isPending, error } = useQuery({
-    queryKey: ["networks"],
-    queryFn: () => apiClient.listNetworks(),
-  });
+  const { data, isPending, error } = useNetworks();
 
   if (isPending) {
     return <Progress />;
@@ -31,7 +53,7 @@ export function NetworkSelector() {
 
   if (error) {
     return (
-      <div className="flex min-h-screen items-center justify-center">
+      <div className="flex h-full items-center justify-center">
         <p className="text-destructive text-sm">Failed to load networks</p>
         <p>{error.message}</p>
       </div>
@@ -40,9 +62,10 @@ export function NetworkSelector() {
 
   if (data?.length === 0) {
     return (
-      <div className="flex min-h-screen flex-col items-center justify-center gap-4 px-4 text-center max-w-sm mx-auto">
+      <div className="mx-auto flex h-full max-w-sm flex-col items-center justify-center gap-4 px-4 text-center">
         <p className="text-muted-foreground">
-          You don't have access to any networks yet. Please email us to get started.
+          You don't have access to any networks yet. Please email us to get
+          started.
         </p>
         <a href="mailto:[email protected]" className="text-primary underline">
           team@flowylabs.ai
@@ -52,35 +75,18 @@ export function NetworkSelector() {
   }
 
   return (
-    <div className="flex h-screen flex-col">
-      <div className="drag-region flex items-center gap-3 border-b px-4 py-3">
-        <WindowControls />
-        <div className="flex-1" />
-        {user && <Muted className="text-xs">{user.email_prefix}</Muted>}
-        <Button
-          variant="ghost"
-          size="sm"
-          className="no-drag text-muted-foreground"
-          onClick={signOut}
-        >
-          <LogOut className="h-3.5 w-3.5" />
-        </Button>
+    <ScrollArea className="h-full">
+      <div className="py-1">
+        {data?.map((network, index) => (
+          <div key={network.id}>
+            <NetworkRow
+              network={network}
+              onClick={() => navigate(`/${network.id}`)}
+            />
+            {index < data.length - 1 && <Separator className="mx-4" />}
+          </div>
+        ))}
       </div>
-
-      <div className="flex flex-1 items-center justify-center p-4">
-        <Select onValueChange={(value) => navigate(`/${value}`)}>
-          <SelectTrigger className="no-drag w-64">
-            <SelectValue placeholder="Select a network" />
-          </SelectTrigger>
-          <SelectContent>
-            {data?.map((network) => (
-              <SelectItem key={network.id} value={network.id}>
-                {network.name}
-              </SelectItem>
-            ))}
-          </SelectContent>
-        </Select>
-      </div>
-    </div>
+    </ScrollArea>
   );
 }

js/src/hooks/use-networks.ts

@@ -0,0 +1,9 @@
+import { useQuery } from "@tanstack/react-query";
+import { apiClient } from "@/api/client";
+
+export function useNetworks() {
+  return useQuery({
+    queryKey: ["networks"],
+    queryFn: () => apiClient.listNetworks(),
+  });
+}

js/src/pages/path-resolver.tsx

@@ -1,12 +1,132 @@
-import { useLocation } from "react-router-dom";
+import { useLocation, useNavigate } from "react-router-dom";
+import { Home, Settings } from "lucide-react";
 import { NetworkSelector } from "@/features/network-selector";
 import { ParticleListView } from "@/features/particles/particle-list-view";
 import { ParticleViewResolver } from "@/features/particles/particle-view-resolver";
+import { WindowControls } from "@/components/window-controls";
+import { Button } from "@/components/ui/button";
+import { Muted } from "@/components/ui/typography";
+import {
+  Breadcrumb,
+  BreadcrumbItem,
+  BreadcrumbLink,
+  BreadcrumbList,
+  BreadcrumbPage,
+  BreadcrumbSeparator,
+} from "@/components/ui/breadcrumb";
+import { Avatar, AvatarFallback } from "@/components/ui/avatar";
+import { useAuthStore } from "@/stores/auth-store";
+import { useNetworks } from "@/hooks/use-networks";
 
 function parsePathSegments(path: string): string[] {
   return path.split("/").filter(Boolean);
 }
 
+function NetworkBreadcrumbContent({ networkId }: { networkId: string }) {
+  const { data: networks } = useNetworks();
+  const network = networks?.find((n) => n.id === networkId);
+  const name = network?.name ?? networkId;
+  const initials = name.slice(0, 2).toUpperCase();
+
+  return (
+    <span className="flex items-center gap-1.5">
+      <Avatar size="sm">
+        <AvatarFallback className="bg-primary/10 text-primary text-[10px] font-medium">
+          {initials}
+        </AvatarFallback>
+      </Avatar>
+      {name}
+    </span>
+  );
+}
+
+function TopBar({ segments }: { segments: string[] }) {
+  const navigate = useNavigate();
+  const user = useAuthStore((s) => s.user);
+  const networkId = segments[0] ?? null;
+
+  return (
+    <div className="drag-region flex items-center gap-3 border-b px-4 py-3">
+      <WindowControls />
+
+      <Breadcrumb className="no-drag">
+        <BreadcrumbList>
+          <BreadcrumbItem>
+            {segments.length === 0 ? (
+              <BreadcrumbPage className="flex items-center gap-1">
+                <Home className="size-3.5" />
+                Networks
+              </BreadcrumbPage>
+            ) : (
+              <BreadcrumbLink
+                className="flex cursor-pointer items-center gap-1"
+                onClick={() => navigate("/")}
+              >
+                <Home className="size-3.5" />
+                Networks
+              </BreadcrumbLink>
+            )}
+          </BreadcrumbItem>
+
+          {networkId && (
+            <span className="contents">
+              <BreadcrumbSeparator />
+              <BreadcrumbItem>
+                {segments.length === 1 ? (
+                  <BreadcrumbPage>
+                    <NetworkBreadcrumbContent networkId={networkId} />
+                  </BreadcrumbPage>
+                ) : (
+                  <BreadcrumbLink
+                    className="cursor-pointer"
+                    onClick={() => navigate(`/${networkId}`)}
+                  >
+                    <NetworkBreadcrumbContent networkId={networkId} />
+                  </BreadcrumbLink>
+                )}
+              </BreadcrumbItem>
+            </span>
+          )}
+
+          {segments.slice(1).map((segment, index) => {
+            const isLast = index === segments.length - 2;
+            const path = `/${segments.slice(0, index + 2).join("/")}`;
+
+            return (
+              <span key={path} className="contents">
+                <BreadcrumbSeparator />
+                <BreadcrumbItem>
+                  {isLast ? (
+                    <BreadcrumbPage>{segment}</BreadcrumbPage>
+                  ) : (
+                    <BreadcrumbLink
+                      className="cursor-pointer"
+                      onClick={() => navigate(path)}
+                    >
+                      {segment}
+                    </BreadcrumbLink>
+                  )}
+                </BreadcrumbItem>
+              </span>
+            );
+          })}
+        </BreadcrumbList>
+      </Breadcrumb>
+
+      <div className="flex-1" />
+      {user && <Muted className="text-xs">{user.email_prefix}</Muted>}
+      <Button
+        variant="ghost"
+        size="sm"
+        className="no-drag text-muted-foreground"
+        onClick={() => navigate("/settings")}
+      >
+        <Settings className="size-3.5" />
+      </Button>
+    </div>
+  );
+}
+
 /**
  * URL structure:
  *   /                        → network selector
@@ -16,18 +136,32 @@ function parsePathSegments(path: string): string[] {
 export default function PathResolver() {
   const segments = parsePathSegments(useLocation().pathname);
 
-  // No segments → show network selector
-  if (segments.length === 0) {
-    return <NetworkSelector />;
-  }
+  const content = (() => {
+    // No segments → show network selector
+    if (segments.length === 0) {
+      return <NetworkSelector />;
+    }
 
-  const [networkId, ...particleSegments] = segments;
+    const [networkId, ...particleSegments] = segments;
 
-  // /:networkId with no particle segments → root particle list
-  if (particleSegments.length === 0) {
-    return <ParticleListView networkId={networkId} particleSegments={[]} />;
-  }
+    // /:networkId with no particle segments → root particle list
+    if (particleSegments.length === 0) {
+      return <ParticleListView networkId={networkId} particleSegments={[]} />;
+    }
 
-  // /:networkId/:p1/:p2/... → resolve and render the container particle
-  return <ParticleViewResolver networkId={networkId} particleSegments={particleSegments} />;
+    // /:networkId/:p1/:p2/... → resolve and render the container particle
+    return (
+      <ParticleViewResolver
+        networkId={networkId}
+        particleSegments={particleSegments}
+      />
+    );
+  })();
+
+  return (
+    <div className="flex h-screen flex-col">
+      <TopBar segments={segments} />
+      <div className="flex-1 overflow-hidden">{content}</div>
+    </div>
+  );
 }

js/src/pages/settings-page.tsx

@@ -0,0 +1,139 @@
+import { useNavigate } from "react-router-dom";
+import { ChevronRight, LogOut, User, Info, Shield } from "lucide-react";
+import { Avatar, AvatarFallback } from "@/components/ui/avatar";
+import { Separator } from "@/components/ui/separator";
+import { WindowControls } from "@/components/window-controls";
+import { Button } from "@/components/ui/button";
+import { Muted } from "@/components/ui/typography";
+import { ScrollArea } from "@/components/ui/scroll-area";
+import { useAuthStore } from "@/stores/auth-store";
+import { ArrowLeft } from "lucide-react";
+
+interface SettingsRowProps {
+  icon: React.ReactNode;
+  label: string;
+  detail?: string;
+  onClick?: () => void;
+  destructive?: boolean;
+}
+
+function SettingsRow({
+  icon,
+  label,
+  detail,
+  onClick,
+  destructive,
+}: SettingsRowProps) {
+  return (
+    <button
+      type="button"
+      onClick={onClick}
+      className={`flex w-full items-center gap-3 px-4 py-3 text-left transition-colors hover:bg-accent ${destructive ? "text-destructive" : ""}`}
+    >
+      <span className="text-muted-foreground flex size-5 items-center justify-center">
+        {icon}
+      </span>
+      <span className="min-w-0 flex-1 text-sm font-medium">{label}</span>
+      {detail && <Muted className="text-xs">{detail}</Muted>}
+      {onClick && !destructive && (
+        <ChevronRight className="text-muted-foreground size-4" />
+      )}
+    </button>
+  );
+}
+
+function SettingsGroup({
+  title,
+  children,
+}: {
+  title: string;
+  children: React.ReactNode;
+}) {
+  return (
+    <div>
+      <p className="text-muted-foreground px-4 pb-1 pt-4 text-xs font-medium uppercase tracking-wider">
+        {title}
+      </p>
+      <div>{children}</div>
+    </div>
+  );
+}
+
+export function SettingsPage() {
+  const navigate = useNavigate();
+  const user = useAuthStore((s) => s.user);
+  const signOut = useAuthStore((s) => s.signOut);
+
+  const initials = user?.email_prefix?.slice(0, 2).toUpperCase() ?? "?";
+
+  return (
+    <div className="flex h-screen flex-col">
+      <div className="drag-region flex items-center gap-3 border-b px-4 py-3">
+        <WindowControls />
+        <Button
+          variant="ghost"
+          size="sm"
+          className="no-drag text-muted-foreground"
+          onClick={() => navigate(-1)}
+        >
+          <ArrowLeft className="size-3.5" />
+        </Button>
+        <span className="text-sm font-medium">Settings</span>
+        <div className="flex-1" />
+      </div>
+
+      <ScrollArea className="flex-1">
+        {/* Profile header */}
+        <div className="flex items-center gap-3 px-4 py-5">
+          <Avatar size="lg">
+            <AvatarFallback className="bg-primary/10 text-primary font-medium">
+              {initials}
+            </AvatarFallback>
+          </Avatar>
+          <div className="min-w-0 flex-1">
+            <p className="truncate text-sm font-medium">
+              {user?.email_prefix}
+            </p>
+            <Muted className="text-xs">{user?.email}</Muted>
+          </div>
+        </div>
+
+        <Separator />
+
+        <SettingsGroup title="Account">
+          <SettingsRow
+            icon={<User className="size-4" />}
+            label="Profile"
+            detail={user?.email_prefix}
+          />
+          <Separator className="mx-4" />
+          <SettingsRow
+            icon={<Shield className="size-4" />}
+            label="Privacy"
+          />
+        </SettingsGroup>
+
+        <Separator className="mt-4" />
+
+        <SettingsGroup title="About">
+          <SettingsRow
+            icon={<Info className="size-4" />}
+            label="Version"
+            detail="1.0.0"
+          />
+        </SettingsGroup>
+
+        <Separator className="mt-4" />
+
+        <div className="py-4">
+          <SettingsRow
+            icon={<LogOut className="size-4" />}
+            label="Sign out"
+            onClick={signOut}
+            destructive
+          />
+        </div>
+      </ScrollArea>
+    </div>
+  );
+}