P14:[{"_319":109,"_320":48,"_321":322},"app1","app2","diffPatch","diff --git a/app/components/compare-button.tsx b/app/components/compare-button.tsx\nnew file mode 100644\nindex 0000000..50b06e6\n--- /dev/null\n+++ b/app/components/compare-button.tsx\n@@ -0,0 +1,22 @@\n+import { GitCompare } from 'lucide-react'\n+import { Link } from 'react-router'\n+import { useCompare } from '#app/contexts/compare.tsx'\n+\n+export function CompareButton() {\n+\tconst { count, isHydrated } = useCompare()\n+\tconst displayCount = isHydrated ? count : 0\n+\treturn (\n+\t\t\n+\t\t\t\n+\t\t\t{displayCount > 0 ? (\n+\t\t\t\t\n+\t\t\t\t\t{displayCount > 99 ? '99+' : displayCount}\n+\t\t\t\t\n+\t\t\t) : null}\n+\t\t\n+\t)\n+}\ndiff --git a/app/components/comparison-chat.tsx b/app/components/comparison-chat.tsx\nnew file mode 100644\nindex 0000000..64d935c\n--- /dev/null\n+++ b/app/components/comparison-chat.tsx\n@@ -0,0 +1,147 @@\n+import { useChat, fetchServerSentEvents } from '@tanstack/ai-react'\n+import { AlertCircle, Send } from 'lucide-react'\n+import { useState } from 'react'\n+import { ComparisonTable } from '#app/components/comparison-table.tsx'\n+import {\n+\tComparisonSchema,\n+\ttype PartialComparison,\n+} from '#app/schemas/comparison.ts'\n+\n+type ProductSummary = {\n+\tid: string\n+\tname: string\n+\tbrand: { name: string }\n+\timageUrl: string\n+\tprice: number\n+}\n+\n+export function ComparisonChat({\n+\tproducts,\n+}: {\n+\tproducts: Array\n+}) {\n+\tconst productIds = products.map((p) => p.id)\n+\tconst [draft, setDraft] = useState('')\n+\n+\tconst { sendMessage, isLoading, messages } = useChat({\n+\t\tconnection: fetchServerSentEvents('/api/compare'),\n+\t\tforwardedProps: { productIds },\n+\t\toutputSchema: ComparisonSchema,\n+\t})\n+\n+\treturn (\n+\t\t

\n+\t\t\t{messages.length === 0 ? (\n+\t\t\t\t\n+\t\t\t) : (\n+\t\t\t\t

\n+\t\t\t\t\t{messages.map((m) => {\n+\t\t\t\t\t\tif (m.role === 'user') {\n+\t\t\t\t\t\t\treturn \n+\t\t\t\t\t\t}\n+\n+\t\t\t\t\t\tconst part = m.parts.find((p) => p.type === 'structured-output')\n+\t\t\t\t\t\tif (!part) {\n+\t\t\t\t\t\t\treturn\n+\t\t\t\t\t\t}\n+\n+\t\t\t\t\t\tconst comparison = part.data ?? part.partial\n+\n+\t\t\t\t\t\tif (part.status === 'error') {\n+\t\t\t\t\t\t\treturn \n+\t\t\t\t\t\t}\n+\n+\t\t\t\t\t\treturn \n+\t\t\t\t\t})}\n+\t\t\t\t

\n+\t\t\t)}\n+\n+\t\t\t {\n+\t\t\t\t\tevent.preventDefault()\n+\t\t\t\t\tif (!draft.trim() || isLoading) return\n+\t\t\t\t\tvoid sendMessage(draft)\n+\t\t\t\t\tsetDraft('')\n+\t\t\t\t}}\n+\t\t\t\tclassName=\"sticky bottom-4 flex items-center gap-2 rounded-full border border-stone-200 bg-white p-2 shadow-sm dark:border-gray-700 dark:bg-gray-800\"\n+\t\t\t>\n+\t\t\t\t setDraft(e.target.value)}\n+\t\t\t\t\tplaceholder=\"What matters most to you?\"\n+\t\t\t\t\tdisabled={isLoading}\n+\t\t\t\t\tclassName=\"flex-1 bg-transparent px-3 py-2 text-sm text-gray-700 placeholder-gray-400 focus:outline-none disabled:opacity-60 dark:text-gray-200\"\n+\t\t\t\t/>\n+\t\t\t\t\n+\t\t\t\t\t\n+\t\t\t\t\n+\t\t\t\n+\t\t

\n+\t)\n+}\n+\n+// ─── Pre-built presentation — you don't write any of this ────────────────────\n+\n+function getUserText(\n+\tparts: ReadonlyArray<{ type: string; content?: unknown }>,\n+) {\n+\treturn parts\n+\t\t.filter((p) => p.type === 'text')\n+\t\t.map((p) => (typeof p.content === 'string' ? p.content : ''))\n+\t\t.join('')\n+}\n+\n+function UserBubble({ text }: { text: string }) {\n+\treturn (\n+\t\t

\n+\t\t\t

\n+\t\t\t\t{text}\n+\t\t\t

\n+\t\t

\n+\t)\n+}\n+\n+function ComparisonCard({\n+\tcomparison,\n+\tproducts,\n+}: {\n+\tcomparison: PartialComparison\n+\tproducts: Array\n+}) {\n+\treturn (\n+\t\t

\n+\t\t\t\n+\t\t

\n+\t)\n+}\n+\n+function EmptyState() {\n+\treturn (\n+\t\t

\n+\t\t\tAsk a question below to compare these products.\n+\t\t\t

\n+\t\t\t\tTry \"What's the best value for the money?\" or \"Which is most durable?\"\n+\t\t\t

\n+\t\t

\n+\t)\n+}\n+\n+function ComparisonErrorCard({ message }: { message?: string }) {\n+\treturn (\n+\t\t

\n+\t\t\t\n+\t\t\t

\n+\t\t\t\t

The comparison didn't validate.

\n+\t\t\t\t

\n+\t\t\t\t\t{message ?? 'Try rephrasing your question.'}\n+\t\t\t\t

\n+\t\t\t

\n+\t\t

\n+\t)\n+}\ndiff --git a/app/components/comparison-table.tsx b/app/components/comparison-table.tsx\nnew file mode 100644\nindex 0000000..e632935\n--- /dev/null\n+++ b/app/components/comparison-table.tsx\n@@ -0,0 +1,163 @@\n+import { Award, Trophy } from 'lucide-react'\n+import { Skeleton } from '#app/components/skeleton.tsx'\n+import { type PartialComparison } from '#app/schemas/comparison.ts'\n+\n+type ProductSummary = {\n+\tid: string\n+\tname: string\n+\tbrand: { name: string }\n+\timageUrl: string\n+\tprice: number\n+}\n+\n+export function ComparisonTable({\n+\tcomparison,\n+\tproducts,\n+}: {\n+\tcomparison: PartialComparison\n+\tproducts: Array\n+}) {\n+\tconst productById = new Map(products.map((p) => [p.id, p]))\n+\tconst dimensions = comparison.dimensions ?? []\n+\tconst rankings = [...(comparison.rankings ?? [])].sort(\n+\t\t(a, b) => (a.rank ?? Infinity) - (b.rank ?? Infinity),\n+\t)\n+\n+\treturn (\n+\t\t

\n+\t\t\t

\n+\t\t\t\t

\n+\t\t\t\t\tComparing for: {comparison.criteria ?? }\n+\t\t\t\t

\n+\t\t\t\t

\n+\t\t\t\t\t{comparison.summary ?? (\n+\t\t\t\t\t\t\n+\t\t\t\t\t\t\t\n+\t\t\t\t\t\t\t\n+\t\t\t\t\t\t\n+\t\t\t\t\t)}\n+\t\t\t\t

\n+\t\t\t

\n+\n+\t\t\t

\n+\t\t\t\t

\n+\t\t\t\t\tRankings\n+\t\t\t\t

\n+\t\t\t\t{rankings.length === 0 ? (\n+\t\t\t\t\t

\n+\t\t\t\t\t\t\n+\t\t\t\t\t

\n+\t\t\t\t) : (\n+\t\t\t\t\t

\n+\t\t\t\t\t\t\t\t\t

\n+\t\t\t\t\t\t\t\t\t\t{isWinner ? (\n+\t\t\t\t\t\t\t\t\t\t\t\n+\t\t\t\t\t\t\t\t\t\t) : r.rank !== undefined ? (\n+\t\t\t\t\t\t\t\t\t\t\t`#${r.rank}`\n+\t\t\t\t\t\t\t\t\t\t) : (\n+\t\t\t\t\t\t\t\t\t\t\t'…'\n+\t\t\t\t\t\t\t\t\t\t)}\n+\t\t\t\t\t\t\t\t\t

\n+\t\t\t\t\t\t\t\t\t

\n+\t\t\t\t\t\t\t\t\t\t

\n+\t\t\t\t\t\t\t\t\t\t\t{product?.name ?? r.productId ?? }\n+\t\t\t\t\t\t\t\t\t\t

\n+\t\t\t\t\t\t\t\t\t\t

\n+\t\t\t\t\t\t\t\t\t\t\t{product?.brand.name}\n+\t\t\t\t\t\t\t\t\t\t\t{product ? ` · $${product.price}` : null}\n+\t\t\t\t\t\t\t\t\t\t

\n+\t\t\t\t\t\t\t\t\t\t

\n+\t\t\t\t\t\t\t\t\t\t\t{r.reason ?? }\n+\t\t\t\t\t\t\t\t\t\t

\n+\t\t\t\t\t\t\t\t\t

\n+\t\t\t\t\t\t\t\t\n+\t\t\t\t\t\t\t)\n+\t\t\t\t\t\t})}\n+\t\t\t\t\t

\n+\t\t\t\t)}\n+\t\t\t

\n+\n+\t\t\t

\n+\t\t\t\t

\n+\t\t\t\t\tDimensions\n+\t\t\t\t

\n+\t\t\t\t

\n+\t\t\t\t\t\n+\t\t\t\t\t\t\n+\t\t\t\t\t\t\t\n+\t\t\t\t\t\t\t\t\n+\t\t\t\t\t\t\t\t{products.map((p) => (\n+\t\t\t\t\t\t\t\t\t\n+\t\t\t\t\t\t\t\t\t\t{p.name}\n+\t\t\t\t\t\t\t\t\t\n+\t\t\t\t\t\t\t\t))}\n+\t\t\t\t\t\t\t\n+\t\t\t\t\t\t\n+\t\t\t\t\t\t\n+\t\t\t\t\t\t\t{dimensions.length === 0 ? (\n+\t\t\t\t\t\t\t\t\n+\t\t\t\t\t\t\t\t\t\n+\t\t\t\t\t\t\t\t\t\t\n+\t\t\t\t\t\t\t\t\t\n+\t\t\t\t\t\t\t\t\n+\t\t\t\t\t\t\t) : (\n+\t\t\t\t\t\t\t\tdimensions.map((d, dIdx) => (\n+\t\t\t\t\t\t\t\t\t\n+\t\t\t\t\t\t\t\t\t\t\n+\t\t\t\t\t\t\t\t\t\t{products.map((p) => {\n+\t\t\t\t\t\t\t\t\t\t\tconst cell = d.values?.find((v) => v.productId === p.id)\n+\t\t\t\t\t\t\t\t\t\t\tconst hasEdge = d.edge === p.id\n+\t\t\t\t\t\t\t\t\t\t\tconst cellValue = cell?.value\n+\t\t\t\t\t\t\t\t\t\t\treturn (\n+\t\t\t\t\t\t\t\t\t\t\t\t\n+\t\t\t\t\t\t\t\t\t\t\t\t\t

\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\t{hasEdge ? (\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\t) : null}\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t{cellValue ?? }\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n+\t\t\t\t\t\t\t\t\t\t\t\t\t

\n+\t\t\t\t\t\t\t\t\t\t\t\t\n+\t\t\t\t\t\t\t\t\t\t\t)\n+\t\t\t\t\t\t\t\t\t\t})}\n+\t\t\t\t\t\t\t\t\t\n+\t\t\t\t\t\t\t\t))\n+\t\t\t\t\t\t\t)}\n+\t\t\t\t\t\t\n+\t\t\t\t\t

\n+\t\t\t\t\t\t\t\t\tDimension\n+\t\t\t\t\t\t\t\t
\n+\t\t\t\t\t\t\t\t\t\t\t{d.name ?? }\n+\t\t\t\t\t\t\t\t\t\t

\n+\t\t\t\t

\n+\t\t\t

\n+\t\t

\n+\t)\n+}\ndiff --git a/app/components/header.tsx b/app/components/header.tsx\nindex 639b713..28379b3 100644\n--- a/app/components/header.tsx\n+++ b/app/components/header.tsx\n@@ -2,6 +2,7 @@ import { ShoppingBag, Search, Menu, X } from 'lucide-react'\n import { useState } from 'react'\n import { Link, useLocation, Form, useSearchParams } from 'react-router'\n import { CartButton } from './cart-button'\n+import { CompareButton } from './compare-button'\n \n export const Header = () => {\n \tconst [isMenuOpen, setIsMenuOpen] = useState(false)\n@@ -73,11 +74,13 @@ export const Header = () => {\n \t\t\t\t\t\t\t\t\t{item.name}\n \t\t\t\t\t\t\t\t\n \t\t\t\t\t\t\t))}\n+\t\t\t\t\t\t\t\n \t\t\t\t\t\t\t\n \t\t\t\t\t\t\n \t\t\t\t\t\n \n \t\t\t\t\t

\n+\t\t\t\t\t\t\n \t\t\t\t\t\t\n \t\t\t\t\t\t setIsMenuOpen(!isMenuOpen)}\ndiff --git a/app/components/product-card.tsx b/app/components/product-card.tsx\nindex b43c877..2365810 100644\n--- a/app/components/product-card.tsx\n+++ b/app/components/product-card.tsx\n@@ -1,8 +1,12 @@\n-import { Heart, Star } from 'lucide-react'\n+import { Check, GitCompare, Heart, Star } from 'lucide-react'\n import { Link } from 'react-router'\n+import { useCompare } from '#app/contexts/compare.tsx'\n import { type ProductCardInfo } from '#app/domain/products.server.js'\n \n export function ProductCard({ product }: { product: ProductCardInfo }) {\n+\tconst compare = useCompare()\n+\tconst inCompare = compare.isHydrated && compare.has(product.id)\n+\n \treturn (\n \t\t\n \t\t\t\t\n-\t\t\t\t\n+\t\t\t\t\t compare.toggle(product.id)}\n+\t\t\t\t\t\taria-pressed={inCompare}\n+\t\t\t\t\t\taria-label={inCompare ? 'Remove from comparison' : 'Compare'}\n+\t\t\t\t\t\ttitle={inCompare ? 'In comparison — click to remove' : 'Compare'}\n+\t\t\t\t\t\tclassName={`rounded-full p-2 shadow-lg transition-colors duration-200 ${\n+\t\t\t\t\t\t\tinCompare\n+\t\t\t\t\t\t\t\t? 'bg-amber-600 text-white hover:bg-amber-700'\n+\t\t\t\t\t\t\t\t: 'bg-white text-gray-600 hover:bg-gray-50 dark:bg-gray-900 dark:text-gray-400 dark:hover:bg-gray-800'\n+\t\t\t\t\t\t}`}\n+\t\t\t\t\t>\n+\t\t\t\t\t\t{inCompare ? (\n+\t\t\t\t\t\t\t\n+\t\t\t\t\t\t) : (\n+\t\t\t\t\t\t\t\n+\t\t\t\t\t\t)}\n+\t\t\t\t\t\n+\t\t\t\t

\n \t\t\t\t

\n \t\t\t\t\t

\n \t\t\t\t\t\t\ndiff --git a/app/components/product-chat.tsx b/app/components/product-chat.tsx\nindex be8b4c5..749ed95 100644\n--- a/app/components/product-chat.tsx\n+++ b/app/components/product-chat.tsx\n@@ -1,6 +1,13 @@\n+import { useChat, fetchServerSentEvents } from '@tanstack/ai-react'\n+import { TextPart } from '@tanstack/ai-react/ui'\n import { MessageCircle, Send, X } from 'lucide-react'\n import { useState } from 'react'\n-import { useRouteLoaderData } from 'react-router'\n+import { useNavigate, useRouteLoaderData } from 'react-router'\n+import { ProductCard } from '#app/components/product-card'\n+import { useCart } from '#app/contexts/cart.js'\n+import { addProductToCart } from '#app/lib/cart-actions.ts'\n+import { addToCartDef } from '#app/tools/cart.ts'\n+import { navigateToDef } from '#app/tools/navigation.ts'\n \n export type ProductChatContext = {\n \tproductId: string\n@@ -38,58 +45,30 @@ function useCurrentProduct(): ProductChatContext | undefined {\n \t}\n }\n \n-/**\n- * Floating chat panel pinned to the bottom-right of every customer-facing\n- * page (mounted from `app/routes/_landing/_layout.tsx`).\n- *\n- * The `sendHandRolled` function + the `reply`/`error`/`isLoading` state\n- * below are a deliberately hand-rolled fetch wrapper. The next exercise\n- * replaces this whole block with TanStack AI's `useChat`.\n- */\n export function ProductChat() {\n \tconst product = useCurrentProduct()\n+\tconst navigate = useNavigate()\n+\tconst cart = useCart()\n \tconst [isOpen, setIsOpen] = useState(false)\n \tconst [draft, setDraft] = useState('')\n \n-\t// Hand-rolled chat state — replaced by `useChat` in the next exercise.\n-\tconst [reply, setReply] = useState('')\n-\tconst [error, setError] = useState(null)\n-\tconst [isLoading, setIsLoading] = useState(false)\n+\tconst navigateTo = navigateToDef.client(({ destination }) => {\n+\t\tnavigate(destination)\n+\t\treturn { destination }\n+\t})\n \n-\t// Hand-rolled chat submission — replaced by `useChat`'s\n-\t// `sendMessage` in the next exercise.\n-\tasync function sendHandRolled(event: React.FormEvent) {\n-\t\tevent.preventDefault()\n-\t\tif (!draft.trim() || isLoading) return\n-\t\tsetError(null)\n-\t\tsetReply('')\n-\t\tsetIsLoading(true)\n-\t\ttry {\n-\t\t\tconst res = await fetch('/api/chat', {\n-\t\t\t\tmethod: 'POST',\n-\t\t\t\theaders: { 'Content-Type': 'application/json' },\n-\t\t\t\t// TanStack AI validates this against AG-UI's RunAgentInput, so even\n-\t\t\t\t// a hand-rolled request needs threadId/runId, a per-message id, and\n-\t\t\t\t// (here empty) tools/context arrays.\n-\t\t\t\tbody: JSON.stringify({\n-\t\t\t\t\tthreadId: crypto.randomUUID(),\n-\t\t\t\t\trunId: crypto.randomUUID(),\n-\t\t\t\t\tmessages: [{ id: crypto.randomUUID(), role: 'user', content: draft }],\n-\t\t\t\t\ttools: [],\n-\t\t\t\t\tcontext: [],\n-\t\t\t\t}),\n+\tconst addToCart = addToCartDef.client(\n+\t\tasync ({ productId, size, color, quantity }) => {\n+\t\t\tawait addProductToCart({ productId, size, color, quantity }, cart)\n+\t\t\treturn { added: true }\n+\t\t},\n+\t)\n+\n+\tconst { messages, sendMessage, isLoading, interrupts } = useChat({\n+\t\tconnection: fetchServerSentEvents('/api/chat'),\n+\t\tforwardedProps: product ? { productId: product.productId } : {},\n+\t\ttools: [navigateTo, addToCart],\n \t})\n-\t\t\tif (!res.ok) {\n-\t\t\t\tthrow new Error(`${res.status} ${await res.text()}`)\n-\t\t\t}\n-\t\t\tsetReply(await res.text())\n-\t\t\tsetDraft('')\n-\t\t} catch (err) {\n-\t\t\tsetError(err instanceof Error ? err.message : String(err))\n-\t\t} finally {\n-\t\t\tsetIsLoading(false)\n-\t\t}\n-\t}\n \n \treturn (\n \t\t

\n@@ -115,35 +94,258 @@ export function ProductChat() {\n \n \t\t\t\t\t

\n \t\t\t\t\t\t

\n-\t\t\t\t\t\t\t👋 Hi! Ask me anything about this product.\n+\t\t\t\t\t\t\t👋 Hi! Ask me about products, or tell me where you'd like to go.\n+\t\t\t\t\t\t

\n+\n+\t\t\t\t\t\t{messages.map((m) => (\n+\t\t\t\t\t\t\t\n+\t\t\t\t\t\t\t\t{m.parts.map((part, i) => {\n+\t\t\t\t\t\t\t\t\tif (part.type === 'text') {\n+\t\t\t\t\t\t\t\t\t\treturn \n+\t\t\t\t\t\t\t\t\t}\n+\t\t\t\t\t\t\t\t\tif (part.type === 'thinking') {\n+\t\t\t\t\t\t\t\t\t\treturn (\n+\t\t\t\t\t\t\t\t\t\t\t\n+\t\t\t\t\t\t\t\t\t\t\t\t

\n+\t\t\t\t\t\t\t\t\t\t\t\t\t💭 Thinking…\n+\t\t\t\t\t\t\t\t\t\t\t\t

\n+\t\t\t\t\t\t\t\t\t\t\t\t

\n+\t\t\t\t\t\t\t\t\t\t\t\t\t{part.content}\n+\t\t\t\t\t\t\t\t\t\t\t\t

\n+\t\t\t\t\t\t\t\t\t\t\t\n+\t\t\t\t\t\t\t\t\t\t)\n+\t\t\t\t\t\t\t\t\t}\n+\t\t\t\t\t\t\t\t\tif (part.type === 'tool-call') {\n+\t\t\t\t\t\t\t\t\t\tconst output = part.output as\n+\t\t\t\t\t\t\t\t\t\t\t| {\n+\t\t\t\t\t\t\t\t\t\t\t\t\tproducts?: Array<{ id: string }>\n+\t\t\t\t\t\t\t\t\t\t\t\t\tdestination?: string\n+\t\t\t\t\t\t\t\t\t\t\t\t\tadded?: boolean\n+\t\t\t\t\t\t\t\t\t\t\t\t\tproductName?: string\n+\t\t\t\t\t\t\t\t\t\t\t\t\tvariations?: Array<{\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\tsize: string\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\tcolor: string\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\tquantity: number\n+\t\t\t\t\t\t\t\t\t\t\t\t\t}>\n+\t\t\t\t\t\t\t\t\t\t\t }\n+\t\t\t\t\t\t\t\t\t\t\t| undefined\n+\n+\t\t\t\t\t\t\t\t\t\tconst products = output?.products\n+\t\t\t\t\t\t\t\t\t\tif (Array.isArray(products) && products.length > 0) {\n+\t\t\t\t\t\t\t\t\t\t\treturn (\n+\t\t\t\t\t\t\t\t\t\t\t\t

\n+\t\t\t\t\t\t\t\t\t\t\t\t\t{products.map((p) => (\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\t[0]['product']}\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\t/>\n+\t\t\t\t\t\t\t\t\t\t\t\t\t))}\n \t\t\t\t\t\t\t\t\t\t\t\t

\n+\t\t\t\t\t\t\t\t\t\t\t)\n+\t\t\t\t\t\t\t\t\t\t}\n \n-\t\t\t\t\t\t{/* The reply preview + error bubble below belong to the\n-\t\t\t\t\t\t hand-rolled fetch. They'll be replaced by `useChat`'s\n-\t\t\t\t\t\t message list in the next exercise. */}\n-\t\t\t\t\t\t{reply ? (\n-\t\t\t\t\t\t\t

\n-\t\t\t\t\t\t\t\t{reply}\n-\t\t\t\t\t\t\t

\n-\t\t\t\t\t\t) : null}\n-\t\t\t\t\t\t{error ? (\n-\t\t\t\t\t\t\t

\n-\t\t\t\t\t\t\t\t⚠️ {error}\n+\t\t\t\t\t\t\t\t\t\tif (Array.isArray(output?.variations)) {\n+\t\t\t\t\t\t\t\t\t\t\tconst variations = output.variations\n+\t\t\t\t\t\t\t\t\t\t\tconst sizes = Array.from(\n+\t\t\t\t\t\t\t\t\t\t\t\tnew Set(variations.map((v) => v.size)),\n+\t\t\t\t\t\t\t\t\t\t\t)\n+\t\t\t\t\t\t\t\t\t\t\tconst colors = Array.from(\n+\t\t\t\t\t\t\t\t\t\t\t\tnew Set(variations.map((v) => v.color)),\n+\t\t\t\t\t\t\t\t\t\t\t)\n+\t\t\t\t\t\t\t\t\t\t\tconst find = (size: string, color: string) =>\n+\t\t\t\t\t\t\t\t\t\t\t\tvariations.find(\n+\t\t\t\t\t\t\t\t\t\t\t\t\t(v) => v.size === size && v.color === color,\n+\t\t\t\t\t\t\t\t\t\t\t\t)?.quantity\n+\t\t\t\t\t\t\t\t\t\t\treturn (\n+\t\t\t\t\t\t\t\t\t\t\t\t

\n+\t\t\t\t\t\t\t\t\t\t\t\t\t

\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\t{output.productName\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t? `Variations for ${output.productName}`\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t: 'Available variations'}\n \t\t\t\t\t\t\t\t\t\t\t\t\t

\n-\t\t\t\t\t\t) : null}\n+\t\t\t\t\t\t\t\t\t\t\t\t\t

\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t{colors.map((c) => (\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t{c}\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t))}\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t{sizes.map((s) => (\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t{colors.map((c) => {\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\tconst qty = find(s, c)\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\tif (qty === undefined) {\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\treturn (\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t—\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t)\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t}\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\tif (qty === 0) {\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\treturn (\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t0\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t)\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t}\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\treturn (\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t{qty}\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t)\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t})}\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t))}\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\t

\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\tSize\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t
\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t{s}\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t

\n+\t\t\t\t\t\t\t\t\t\t\t\t\t

\n+\t\t\t\t\t\t\t\t\t\t\t\t

\n+\t\t\t\t\t\t\t\t\t\t\t)\n+\t\t\t\t\t\t\t\t\t\t}\n+\n+\t\t\t\t\t\t\t\t\t\tif (output?.destination) {\n+\t\t\t\t\t\t\t\t\t\t\treturn (\n+\t\t\t\t\t\t\t\t\t\t\t\t\n+\t\t\t\t\t\t\t\t\t\t\t\t\t📍 Took you to the {output.destination} page.\n+\t\t\t\t\t\t\t\t\t\t\t\t

\n+\t\t\t\t\t\t\t\t\t\t\t)\n+\t\t\t\t\t\t\t\t\t\t}\n+\n+\t\t\t\t\t\t\t\t\t\tif (output?.added) {\n+\t\t\t\t\t\t\t\t\t\t\treturn (\n+\t\t\t\t\t\t\t\t\t\t\t\t\n+\t\t\t\t\t\t\t\t\t\t\t\t\t✅ Added to your cart.\n+\t\t\t\t\t\t\t\t\t\t\t\t

\n+\t\t\t\t\t\t\t\t\t\t\t)\n+\t\t\t\t\t\t\t\t\t\t}\n+\n+\t\t\t\t\t\t\t\t\t\tif (part.name === 'addToCart') {\n+\t\t\t\t\t\t\t\t\t\t\tconst approval = interrupts.find(\n+\t\t\t\t\t\t\t\t\t\t\t\t(interrupt) =>\n+\t\t\t\t\t\t\t\t\t\t\t\t\tinterrupt.kind === 'tool-approval' &&\n+\t\t\t\t\t\t\t\t\t\t\t\t\tinterrupt.toolCallId === part.id &&\n+\t\t\t\t\t\t\t\t\t\t\t\t\tinterrupt.status === 'pending',\n+\t\t\t\t\t\t\t\t\t\t\t)\n+\t\t\t\t\t\t\t\t\t\t\tif (approval?.kind === 'tool-approval') {\n+\t\t\t\t\t\t\t\t\t\t\t\tconst { productName, size, color, quantity } =\n+\t\t\t\t\t\t\t\t\t\t\t\t\tapproval.originalArgs\n+\t\t\t\t\t\t\t\t\t\t\t\treturn (\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\t

\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t🛒 Add to cart?\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\t

\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\t

\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t

{productName}

\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t

\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\tsize {size} · color {color} · qty {quantity}\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t

\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\t

\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t approval.resolveInterrupt(true)}\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\tclassName=\"rounded bg-emerald-600 px-3 py-1 text-xs font-medium text-white hover:bg-emerald-700\"\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t>\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\tYes, add it\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t approval.resolveInterrupt(false)}\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\tclassName=\"rounded bg-gray-300 px-3 py-1 text-xs font-medium text-gray-800 hover:bg-gray-400 dark:bg-gray-700 dark:text-gray-100 dark:hover:bg-gray-600\"\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t>\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\tNo, cancel\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\t

\n+\t\t\t\t\t\t\t\t\t\t\t\t\t

\n+\t\t\t\t\t\t\t\t\t\t\t\t)\n+\t\t\t\t\t\t\t\t\t\t\t}\n+\n+\t\t\t\t\t\t\t\t\t\t\tif (part.approval?.approved === false) {\n+\t\t\t\t\t\t\t\t\t\t\t\treturn (\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\n+\t\t\t\t\t\t\t\t\t\t\t\t\t\t❌ Cancelled — not added.\n+\t\t\t\t\t\t\t\t\t\t\t\t\t

\n+\t\t\t\t\t\t\t\t\t\t\t\t)\n+\t\t\t\t\t\t\t\t\t\t\t}\n+\t\t\t\t\t\t\t\t\t\t}\n+\n+\t\t\t\t\t\t\t\t\t\treturn (\n+\t\t\t\t\t\t\t\t\t\t\t\n+\t\t\t\t\t\t\t\t\t\t\t\t🔧 Calling {(part as { name?: string }).name ?? 'tool'}…\n+\t\t\t\t\t\t\t\t\t\t\t

\n+\t\t\t\t\t\t\t\t\t\t)\n+\t\t\t\t\t\t\t\t\t}\n+\t\t\t\t\t\t\t\t\treturn null\n+\t\t\t\t\t\t\t\t})}\n+\t\t\t\t\t\t\t\n+\t\t\t\t\t\t))}\n \t\t\t\t\t\n \n-\t\t\t\t\t{/* The form's `onSubmit` calls the hand-rolled fetch. The next\n-\t\t\t\t\t exercise points it at `useChat`'s `sendMessage` instead. */}\n \t\t\t\t\t {\n+\t\t\t\t\t\t\tevent.preventDefault()\n+\t\t\t\t\t\t\tif (!draft.trim() || isLoading) return\n+\t\t\t\t\t\t\tvoid sendMessage(draft)\n+\t\t\t\t\t\t\tsetDraft('')\n+\t\t\t\t\t\t}}\n \t\t\t\t\t\tclassName=\"flex items-center gap-2 border-t border-stone-200 p-3 dark:border-gray-700\"\n \t\t\t\t\t>\n \t\t\t\t\t\t setDraft(e.target.value)}\n-\t\t\t\t\t\t\tplaceholder=\"Ask about this product...\"\n+\t\t\t\t\t\t\tplaceholder=\"Ask about products or where to go...\"\n \t\t\t\t\t\t\tdisabled={isLoading}\n \t\t\t\t\t\t\tclassName=\"flex-1 rounded-full border border-stone-200 bg-stone-50 px-4 py-2 text-sm text-gray-700 placeholder-gray-400 focus:border-amber-500 focus:ring-2 focus:ring-amber-500 focus:outline-none disabled:opacity-60 dark:border-gray-700 dark:bg-gray-800 dark:text-gray-200\"\n \t\t\t\t\t\t/>\ndiff --git a/app/components/skeleton.tsx b/app/components/skeleton.tsx\nnew file mode 100644\nindex 0000000..58e20db\n--- /dev/null\n+++ b/app/components/skeleton.tsx\n@@ -0,0 +1,12 @@\n+/**\n+ * Thin grey bar used wherever a piece of data hasn't streamed in yet.\n+ * Render it anywhere the value will be filled in by a partial-streaming\n+ * field. Pass a tailwind width to control the bar's size.\n+ */\n+export function Skeleton({ className = '' }: { className?: string }) {\n+\treturn (\n+\t\t\n+\t)\n+}\ndiff --git a/app/contexts/compare.tsx b/app/contexts/compare.tsx\nnew file mode 100644\nindex 0000000..ab5f5d0\n--- /dev/null\n+++ b/app/contexts/compare.tsx\n@@ -0,0 +1,102 @@\n+import {\n+\tcreateContext,\n+\tuseCallback,\n+\tuseContext,\n+\tuseEffect,\n+\tuseMemo,\n+\tuseState,\n+\ttype ReactNode,\n+} from 'react'\n+\n+type CompareContextValue = {\n+\t/** The current set of product IDs the customer is comparing, in insertion order. */\n+\tids: Array\n+\t/** Toggle a product's membership in the compare list. */\n+\ttoggle: (id: string) => void\n+\t/** Add a product to the compare list (no-op if already present). */\n+\tadd: (id: string) => void\n+\t/** Remove a product from the compare list (no-op if not present). */\n+\tremove: (id: string) => void\n+\t/** Whether a product is in the compare list. */\n+\thas: (id: string) => boolean\n+\t/** Empty the compare list. */\n+\tclear: () => void\n+\t/** Convenience accessor for `ids.length`. */\n+\tcount: number\n+\t/**\n+\t * Whether the provider has finished reading localStorage. Use this to\n+\t * avoid SSR/CSR mismatches — render a neutral state while `false`.\n+\t */\n+\tisHydrated: boolean\n+}\n+\n+const CompareContext = createContext(null)\n+\n+const STORAGE_KEY = 'epicstore.compare.v1'\n+\n+export function CompareProvider({ children }: { children: ReactNode }) {\n+\tconst [ids, setIds] = useState>([])\n+\tconst [isHydrated, setIsHydrated] = useState(false)\n+\n+\tuseEffect(() => {\n+\t\ttry {\n+\t\t\tconst raw = window.localStorage.getItem(STORAGE_KEY)\n+\t\t\tif (raw) {\n+\t\t\t\tconst parsed: unknown = JSON.parse(raw)\n+\t\t\t\tif (Array.isArray(parsed)) {\n+\t\t\t\t\tsetIds(parsed.filter((x): x is string => typeof x === 'string'))\n+\t\t\t\t}\n+\t\t\t}\n+\t\t} catch {\n+\t\t\t// ignore — fall back to empty list\n+\t\t}\n+\t\tsetIsHydrated(true)\n+\t}, [])\n+\n+\tuseEffect(() => {\n+\t\tif (!isHydrated) return\n+\t\ttry {\n+\t\t\twindow.localStorage.setItem(STORAGE_KEY, JSON.stringify(ids))\n+\t\t} catch {\n+\t\t\t// ignore — storage may be unavailable\n+\t\t}\n+\t}, [ids, isHydrated])\n+\n+\tconst add = useCallback((id: string) => {\n+\t\tsetIds((prev) => (prev.includes(id) ? prev : [...prev, id]))\n+\t}, [])\n+\n+\tconst remove = useCallback((id: string) => {\n+\t\tsetIds((prev) => prev.filter((existing) => existing !== id))\n+\t}, [])\n+\n+\tconst toggle = useCallback((id: string) => {\n+\t\tsetIds((prev) =>\n+\t\t\tprev.includes(id) ? prev.filter((existing) => existing !== id) : [...prev, id],\n+\t\t)\n+\t}, [])\n+\n+\tconst clear = useCallback(() => setIds([]), [])\n+\n+\tconst value = useMemo(\n+\t\t() => ({\n+\t\t\tids,\n+\t\t\ttoggle,\n+\t\t\tadd,\n+\t\t\tremove,\n+\t\t\thas: (id) => ids.includes(id),\n+\t\t\tclear,\n+\t\t\tcount: ids.length,\n+\t\t\tisHydrated,\n+\t\t}),\n+\t\t[ids, toggle, add, remove, clear, isHydrated],\n+\t)\n+\n+\treturn {children}\n+}\n+\n+export function useCompare() {\n+\tconst ctx = useContext(CompareContext)\n+\tif (!ctx) throw new Error('useCompare must be used inside ')\n+\treturn ctx\n+}\ndiff --git a/app/lib/cart-actions.ts b/app/lib/cart-actions.ts\nnew file mode 100644\nindex 0000000..78e2df7\n--- /dev/null\n+++ b/app/lib/cart-actions.ts\n@@ -0,0 +1,51 @@\n+type CartLike = {\n+\taddItem: (item: {\n+\t\tproductId: string\n+\t\tname: string\n+\t\tbrand: string\n+\t\tprice: number\n+\t\timageUrl: string\n+\t\tsize: string\n+\t\tcolor: string\n+\t\tquantity: number\n+\t}) => void\n+}\n+\n+type AddProductArgs = {\n+\tproductId: string\n+\tsize: string\n+\tcolor: string\n+\tquantity: number\n+}\n+\n+/**\n+ * Pre-built helper used by the `addToCart` client tool.\n+ *\n+ * Fetches the product details we need to render the cart item, then calls\n+ * the cart context's `addItem`. Pulling this out keeps the cart-state\n+ * plumbing out of the tool callback so the lesson stays focused on tool\n+ * approvals.\n+ */\n+export async function addProductToCart(args: AddProductArgs, cart: CartLike) {\n+\tconst res = await fetch(`/api/product-mini/${args.productId}`)\n+\tif (!res.ok) {\n+\t\tthrow new Error(`Could not fetch product ${args.productId}`)\n+\t}\n+\tconst product = (await res.json()) as {\n+\t\tid: string\n+\t\tname: string\n+\t\tbrand: string\n+\t\tprice: number\n+\t\timageUrl: string\n+\t}\n+\tcart.addItem({\n+\t\tproductId: product.id,\n+\t\tname: product.name,\n+\t\tbrand: product.brand,\n+\t\tprice: product.price,\n+\t\timageUrl: product.imageUrl,\n+\t\tsize: args.size,\n+\t\tcolor: args.color,\n+\t\tquantity: args.quantity,\n+\t})\n+}\ndiff --git a/app/prompts/comparison.ts b/app/prompts/comparison.ts\nnew file mode 100644\nindex 0000000..7b481ec\n--- /dev/null\n+++ b/app/prompts/comparison.ts\n@@ -0,0 +1,26 @@\n+import { type Product } from '#app/prompts/system.ts'\n+\n+export const COMPARISON_SYSTEM_PROMPT = `You are EpicStore's product comparison specialist. You help customers decide between products by returning a structured, side-by-side comparison.\n+\n+Rules:\n+- You will be given the products the customer is currently comparing. Use those productIds in your output — include every product you were given in your \\`rankings\\`.\n+- The customer may steer the comparison (\"rank by price-to-quality ratio\", \"I care most about durability\"). Reflect what they asked for in the \\`criteria\\` field, in their own words.\n+- If the customer has not stated a preference yet, set \\`criteria\\` to \"Overall comparison\".\n+- Only compare on dimensions that actually matter for the stated criteria. Do not enumerate every spec.\n+- Never invent products, attributes, prices, or stock. If you do not know an attribute, use a tool to look it up or omit the dimension.\n+- The customer manages which products are in the comparison from the UI — do not invent new ones in your output. If they ask about a product that is not on the list, tell them to add it from the page and then re-run the comparison.\n+- The \\`summary\\` is a verdict, not a recap of the table. One or two sentences, plain language.`\n+\n+export function buildComparisonPrompt(products: Array): string {\n+\tconst productLines = products\n+\t\t.map(\n+\t\t\t(p) =>\n+\t\t\t\t`- ${p.name} (id: ${p.id}, brand: ${p.brand.name}, $${p.price}, rated ${p.reviewScore}/5)\\n ${p.description}`,\n+\t\t)\n+\t\t.join('\\n')\n+\n+\treturn `The customer is comparing these products:\n+${productLines}\n+\n+Use \\`searchProducts\\` or \\`findSimilarProducts\\` if you need attributes that are not listed above. Stick to the productIds shown when filling out \\`rankings\\` and \\`dimensions[].values[].productId\\`.`\n+}\ndiff --git a/app/prompts/system.ts b/app/prompts/system.ts\nnew file mode 100644\nindex 0000000..2d5d7b0\n--- /dev/null\n+++ b/app/prompts/system.ts\n@@ -0,0 +1,33 @@\n+import { type getProductById } from '#app/domain/products.server.ts'\n+\n+export type Product = NonNullable>>\n+\n+export const GLOBAL_SYSTEM_PROMPT = `You are EpicStore's shopping assistant. EpicStore is an online store that sells shoes and clothing.\n+\n+Rules:\n+- Only answer questions about EpicStore products, sizing, brands, shipping, and shopping in general.\n+- If the user asks about anything else, politely tell them you can only help with shopping.\n+- Never invent products, prices, stock, or sizes. If you do not know the answer, say so.\n+- Before calling any tool that takes action on the customer's behalf, make sure you have every required field. If something is missing, ask the customer — do not guess.`\n+\n+export function buildProductPrompt(product: Product): string {\n+\tconst variationLines = product.variations\n+\t\t.map((v) => {\n+\t\t\tconst stock = v.quantity > 0 ? `${v.quantity} in stock` : 'out of stock'\n+\t\t\treturn ` - size ${v.size}, color ${v.color} (${stock})`\n+\t\t})\n+\t\t.join('\\n')\n+\n+\treturn `The customer is currently looking at this product:\n+- Product ID: ${product.id}\n+- Name: ${product.name}\n+- Brand: ${product.brand.name}\n+- Category: ${product.category.name}\n+- Price: $${product.price}\n+- Rating: ${product.reviewScore}/5\n+- Description: ${product.description}\n+- Available variations:\n+${variationLines}\n+\n+Use this information to answer questions about this product. When a tool needs a productId, this is the product the customer is looking at — use the Product ID listed above. If the customer wants to add this product to their cart but has not picked a specific size or color, call \\`showVariations\\` first so the customer can see the table and pick — do not list variations as text in your reply. If the customer asks something that the information above does not cover, say you are not sure rather than guessing.`\n+}\ndiff --git a/app/root.tsx b/app/root.tsx\nindex 957c221..ff0af68 100644\n--- a/app/root.tsx\n+++ b/app/root.tsx\n@@ -7,6 +7,7 @@ import {\n \tScrollRestoration,\n } from 'react-router'\n import { CartProvider } from '#app/contexts/cart.js'\n+import { CompareProvider } from '#app/contexts/compare.tsx'\n import { type Route } from './+types/root'\n import tailwindStylesheet from './app.css?url'\n import { EpicShop } from './epicshop'\n@@ -56,7 +57,9 @@ export function Layout({ children }: { children: React.ReactNode }) {\n export default function App() {\n \treturn (\n \t\t\n+\t\t\t\n \t\t\t\t\n+\t\t\t\n \t\t\n \t)\n }\ndiff --git a/app/routes/_landing/compare.tsx b/app/routes/_landing/compare.tsx\nnew file mode 100644\nindex 0000000..4ca1724\n--- /dev/null\n+++ b/app/routes/_landing/compare.tsx\n@@ -0,0 +1,152 @@\n+import { Loader2, X } from 'lucide-react'\n+import { useEffect, useState } from 'react'\n+import { Link } from 'react-router'\n+import { ComparisonChat } from '#app/components/comparison-chat.tsx'\n+import { ProductCard } from '#app/components/product-card.tsx'\n+import { useCompare } from '#app/contexts/compare.tsx'\n+import { type ProductCardInfo } from '#app/domain/products.server.js'\n+import {\n+\tconstructPrefixedTitle,\n+\tgetMetaFromMatches,\n+\tgetMetaTitle,\n+} from '#app/utils/metadata.js'\n+import { type Route } from './+types/compare'\n+\n+type CompareData = {\n+\tproducts: Array\n+\tsuggestions: Array\n+}\n+\n+export const meta: Route.MetaFunction = ({ matches }) => {\n+\tconst rootMeta = getMetaFromMatches(matches, 'root')\n+\tconst prefix = getMetaTitle(rootMeta)\n+\treturn [\n+\t\t{\n+\t\t\ttitle: constructPrefixedTitle('Compare products', prefix),\n+\t\t},\n+\t]\n+}\n+\n+export default function ComparePage() {\n+\tconst compare = useCompare()\n+\tconst [data, setData] = useState(null)\n+\tconst [fetching, setFetching] = useState(false)\n+\n+\tuseEffect(() => {\n+\t\tif (!compare.isHydrated) return\n+\t\tconst controller = new AbortController()\n+\t\tsetFetching(true)\n+\t\tfetch(`/api/compare-data?ids=${compare.ids.join(',')}`, {\n+\t\t\tsignal: controller.signal,\n+\t\t})\n+\t\t\t.then((r) => r.json() as Promise)\n+\t\t\t.then(setData)\n+\t\t\t.catch((error) => {\n+\t\t\t\tif (error.name !== 'AbortError') throw error\n+\t\t\t})\n+\t\t\t.finally(() => setFetching(false))\n+\t\treturn () => controller.abort()\n+\t}, [compare.isHydrated, compare.ids])\n+\n+\tif (!compare.isHydrated || (data === null && fetching)) {\n+\t\treturn (\n+\t\t\t

\n+\t\t\t\t\n+\t\t\t

\n+\t\t)\n+\t}\n+\n+\tconst products = data?.products ?? []\n+\tconst suggestions = data?.suggestions ?? []\n+\tconst hasEnoughToCompare = products.length >= 2\n+\n+\treturn (\n+\t\t

\n+\t\t\t

\n+\t\t\t\t

\n+\t\t\t\t\t

\n+\t\t\t\t\t\tCompare products\n+\t\t\t\t\t

\n+\t\t\t\t\t

\n+\t\t\t\t\t\t\n+\t\t\t\t\t\t\t{products.length} in comparison\n+\t\t\t\t\t\t\n+\t\t\t\t\t\t{products.length > 0 ? (\n+\t\t\t\t\t\t\t compare.clear()}\n+\t\t\t\t\t\t\t\tclassName=\"text-xs text-gray-500 underline hover:text-amber-600 dark:text-gray-400\"\n+\t\t\t\t\t\t\t>\n+\t\t\t\t\t\t\t\tClear all\n+\t\t\t\t\t\t\t\n+\t\t\t\t\t\t) : null}\n+\t\t\t\t\t

\n+\t\t\t\t

\n+\n+\t\t\t\t{products.length === 0 ? (\n+\t\t\t\t\t

\n+\t\t\t\t\t\t

\n+\t\t\t\t\t\t\tYour comparison is empty.\n+\t\t\t\t\t\t

\n+\t\t\t\t\t\t

\n+\t\t\t\t\t\t\tClick Add to compare on any product to start.\n+\t\t\t\t\t\t

\n+\t\t\t\t\t\t\n+\t\t\t\t\t\t\tBrowse products\n+\t\t\t\t\t\t\n+\t\t\t\t\t

\n+\t\t\t\t) : (\n+\t\t\t\t\t<>\n+\t\t\t\t\t\t

\n+\t\t\t\t\t\t\t

\n+\t\t\t\t\t\t\t\tIn your comparison\n+\t\t\t\t\t\t\t

\n+\t\t\t\t\t\t\t

\n+\t\t\t\t\t\t\t\t{products.map((p) => (\n+\t\t\t\t\t\t\t\t\t

\n+\t\t\t\t\t\t\t\t\t\t compare.remove(p.id)}\n+\t\t\t\t\t\t\t\t\t\t\taria-label={`Remove ${p.name} from comparison`}\n+\t\t\t\t\t\t\t\t\t\t\tclassName=\"absolute top-2 right-2 z-10 flex h-7 w-7 items-center justify-center rounded-full bg-white/95 text-gray-500 shadow-sm transition-colors hover:bg-red-50 hover:text-red-600 dark:bg-gray-800 dark:text-gray-300\"\n+\t\t\t\t\t\t\t\t\t\t>\n+\t\t\t\t\t\t\t\t\t\t\t\n+\t\t\t\t\t\t\t\t\t\t\n+\t\t\t\t\t\t\t\t\t\t\n+\t\t\t\t\t\t\t\t\t

\n+\t\t\t\t\t\t\t\t))}\n+\t\t\t\t\t\t\t

\n+\t\t\t\t\t\t

\n+\n+\t\t\t\t\t\t{hasEnoughToCompare ? (\n+\t\t\t\t\t\t\t

\n+\t\t\t\t\t\t\t\t

\n+\t\t\t\t\t\t\t\t\tSide-by-side\n+\t\t\t\t\t\t\t\t

\n+\t\t\t\t\t\t\t\t\n+\t\t\t\t\t\t\t

\n+\t\t\t\t\t\t) : (\n+\t\t\t\t\t\t\t

\n+\t\t\t\t\t\t\t\tAdd at least one more product to start comparing.\n+\t\t\t\t\t\t\t

\n+\t\t\t\t\t\t)}\n+\t\t\t\t\t\n+\t\t\t\t)}\n+\n+\t\t\t\t{suggestions.length > 0 ? (\n+\t\t\t\t\t

\n+\t\t\t\t\t\t

\n+\t\t\t\t\t\t\tSimilar products to compare against\n+\t\t\t\t\t\t

\n+\t\t\t\t\t\t

\n+\t\t\t\t\t\t\t{suggestions.map((p) => (\n+\t\t\t\t\t\t\t\t\n+\t\t\t\t\t\t\t))}\n+\t\t\t\t\t\t

\n+\t\t\t\t\t

\n+\t\t\t\t) : null}\n+\t\t\t

\n+\t\t

\n+\t)\n+}\ndiff --git a/app/routes/_landing/products/$productId.tsx b/app/routes/_landing/products/$productId.tsx\nindex c25c69e..405f3ec 100644\n--- a/app/routes/_landing/products/$productId.tsx\n+++ b/app/routes/_landing/products/$productId.tsx\n@@ -7,11 +7,14 @@ import {\n \tRefreshCw,\r\n \tPlus,\r\n \tMinus,\r\n+\tCheck,\r\n+\tGitCompare,\r\n } from 'lucide-react'\r\n import { useState } from 'react'\r\n import { Link } from 'react-router'\r\n import { ProductCard } from '#app/components/product-card.js'\r\n import { useCart } from '#app/contexts/cart.js'\r\n+import { useCompare } from '#app/contexts/compare.tsx'\r\n import {\r\n \tgetProductById,\r\n \tgetRelatedProducts,\r\n@@ -57,6 +60,9 @@ export default function ProductDetailPage({\n \tconst [quantity, setQuantity] = useState(1)\r\n \tconst [activeImage, setActiveImage] = useState(0)\r\n \tconst cart = useCart()\r\n+\tconst compare = useCompare()\r\n+\tconst inCompare =\r\n+\t\tcompare.isHydrated && product ? compare.has(product.id) : false\r\n \r\n \tif (!product) {\r\n \t\treturn (\r\n@@ -263,9 +269,32 @@ export default function ProductDetailPage({\n \t\t\t\t\t\t\t>\r\n \t\t\t\t\t\t\t\tAdd to Cart\r\n \t\t\t\t\t\t\t\r\n-\t\t\t\t\t\t\t\r\n+\t\t\t\t\t\t\t compare.toggle(product.id)}\r\n+\t\t\t\t\t\t\t\taria-pressed={inCompare}\r\n+\t\t\t\t\t\t\t\taria-label={inCompare ? 'Remove from comparison' : 'Compare'}\r\n+\t\t\t\t\t\t\t\ttitle={inCompare ? 'In comparison — click to remove' : 'Compare'}\r\n+\t\t\t\t\t\t\t\tclassName={`rounded-lg border p-4 transition-colors duration-200 ${\r\n+\t\t\t\t\t\t\t\t\tinCompare\r\n+\t\t\t\t\t\t\t\t\t\t? 'border-amber-500 bg-amber-100 text-amber-700 hover:bg-amber-200 dark:border-amber-600 dark:bg-amber-900 dark:text-amber-200'\r\n+\t\t\t\t\t\t\t\t\t\t: 'border-gray-300 text-gray-600 hover:bg-gray-50 dark:border-gray-600 dark:text-gray-400 dark:hover:bg-gray-800'\r\n+\t\t\t\t\t\t\t\t}`}\r\n+\t\t\t\t\t\t\t>\r\n+\t\t\t\t\t\t\t\t{inCompare ? (\r\n+\t\t\t\t\t\t\t\t\t\r\n+\t\t\t\t\t\t\t\t) : (\r\n+\t\t\t\t\t\t\t\t\t\r\n+\t\t\t\t\t\t\t\t)}\r\n+\t\t\t\t\t\t\t\r\n \t\t\t\t\t\t\r\n \r\n \t\t\t\t\t\t{/* Features */}\r\ndiff --git a/app/routes/api.chat.tsx b/app/routes/api.chat.tsx\nindex f62c7c9..79c7d47 100644\n--- a/app/routes/api.chat.tsx\n+++ b/app/routes/api.chat.tsx\n@@ -4,31 +4,69 @@ import {\n \ttoServerSentEventsResponse,\n } from '@tanstack/ai'\n import { openRouterText } from '@tanstack/ai-openrouter'\n+import { getProductById } from '#app/domain/products.server.ts'\n+import {\n+\tGLOBAL_SYSTEM_PROMPT,\n+\tbuildProductPrompt,\n+} from '#app/prompts/system.ts'\n+import { PageForwardedProps } from '#app/schemas/chat.js'\n+import { addToCartDef } from '#app/tools/cart.ts'\n+import { navigateToDef } from '#app/tools/navigation.ts'\n+import {\n+\tfindSimilarProducts,\n+\trecommendProducts,\n+\tsearchProducts,\n+} from '#app/tools/products.ts'\n+import { getCareInstructions } from '#app/tools/care-instructions.ts'\n+import { getReturnPolicy } from '#app/tools/return-policy.ts'\n+import { subscribeToRestock } from '#app/tools/restock.ts'\n+import { getShippingEstimate } from '#app/tools/shipping.ts'\n+import { getSizeGuide } from '#app/tools/size-guide.ts'\n+import { showVariations } from '#app/tools/variations.ts'\n import { type Route } from './+types/api.chat'\n \n-/**\n- * Resource route for the product chat backend.\n- *\n- * 🐨 Build an OpenRouter text adapter by calling\n- * `openRouterText('nvidia/nemotron-3-super-120b-a12b:free')`. The adapter reads\n- * `OPENROUTER_API_KEY` from your environment automatically.\n- * 🐨 In the action below:\n- * - Call `await chatParamsFromRequest(request)` to parse and validate\n- * the AG-UI request body. On a malformed body it throws a `Response`\n- * with status 400 — React Router 7 surfaces that to the client\n- * automatically, so you don't need a try/catch.\n- * - Destructure `messages` and `threadId` from the returned params.\n- * - Call `chat({ adapter, messages, threadId })` (the model is baked into the\n- * adapter — no separate `model:` field needed) and return\n- * `toServerSentEventsResponse(stream)`.\n- * 💣 Delete the `void` references and the 501 `Response` once your real\n- * implementation is in place.\n- */\n+const adapter = openRouterText('nvidia/nemotron-3-super-120b-a12b:free')\n+\n export const action = async ({ request }: Route.ActionArgs) => {\n-\tvoid request\n-\tvoid chat\n-\tvoid chatParamsFromRequest\n-\tvoid toServerSentEventsResponse\n-\tvoid openRouterText\n-\treturn new Response('TODO: implement chat endpoint', { status: 501 })\n+\tconst { messages, forwardedProps, threadId, runId, parentRunId, resume } =\n+\t\tawait chatParamsFromRequest(request)\n+\tconst props = PageForwardedProps.safeParse(forwardedProps)\n+\tif (!props.success) {\n+\t\treturn new Response(props.error.message, { status: 400 })\n+\t}\n+\tconst product = props.data.productId\n+\t\t? await getProductById(props.data.productId)\n+\t\t: null\n+\n+\tconst systemPrompts = product\n+\t\t? [GLOBAL_SYSTEM_PROMPT, buildProductPrompt(product)]\n+\t\t: [GLOBAL_SYSTEM_PROMPT]\n+\n+\tconst stream = chat({\n+\t\tadapter,\n+\t\tsystemPrompts,\n+\t\tmessages,\n+\t\tthreadId,\n+\t\trunId,\n+\t\tparentRunId,\n+\t\tresume,\n+\t\ttools: [\n+\t\t\t// Eager tools — described to the model on every message.\n+\t\t\tsearchProducts,\n+\t\t\tfindSimilarProducts,\n+\t\t\trecommendProducts,\n+\t\t\tshowVariations,\n+\t\t\tnavigateToDef,\n+\t\t\taddToCartDef,\n+\t\t\t// Lazy tools — name-only in the discovery tool's enum until the\n+\t\t\t// model asks for one. Same registration shape as the eager tools;\n+\t\t\t// the `lazy: true` flag on each definition is what does the work.\n+\t\t\tgetReturnPolicy,\n+\t\t\tgetSizeGuide,\n+\t\t\tgetCareInstructions,\n+\t\t\tsubscribeToRestock,\n+\t\t\tgetShippingEstimate,\n+\t\t],\n+\t})\n+\treturn toServerSentEventsResponse(stream)\n }\ndiff --git a/app/routes/api.compare-data.tsx b/app/routes/api.compare-data.tsx\nnew file mode 100644\nindex 0000000..af21ea9\n--- /dev/null\n+++ b/app/routes/api.compare-data.tsx\n@@ -0,0 +1,59 @@\n+import {\n+\tgetProductById,\n+\tgetProducts,\n+\tgetRelatedProducts,\n+} from '#app/domain/products.server.ts'\n+import { type Route } from './+types/api.compare-data'\n+\n+/**\n+ * Server-side data for the compare page. Takes a comma-separated `ids`\n+ * query string and returns:\n+ *\n+ * - `products`: the products being compared, in the order requested\n+ * (with unknown ids filtered out)\n+ * - `suggestions`: related products the customer might also want to\n+ * compare, anchored on the first product in the list. Falls back to\n+ * top-rated products from the catalog if no `ids` are provided.\n+ *\n+ * The compare page reads its product IDs from `useCompare()` (localStorage),\n+ * so it can't be server-loaded by the route — it fetches this endpoint\n+ * on the client whenever the compare list changes.\n+ */\n+export const loader = async ({ request }: Route.LoaderArgs) => {\n+\tconst url = new URL(request.url)\n+\tconst ids = (url.searchParams.get('ids') ?? '')\n+\t\t.split(',')\n+\t\t.map((id) => id.trim())\n+\t\t.filter(Boolean)\n+\n+\tconst loadedRaw = await Promise.all(ids.map((id) => getProductById(id)))\n+\tconst loaded = loadedRaw.filter((p): p is NonNullable => p !== null)\n+\tconst products = loaded.map((p) => ({\n+\t\tid: p.id,\n+\t\tname: p.name,\n+\t\tdescription: p.description,\n+\t\timageUrl: p.imageUrl,\n+\t\tprice: p.price,\n+\t\treviewScore: p.reviewScore,\n+\t\tbrand: { id: p.brand.id, name: p.brand.name },\n+\t\t_count: { reviews: p.reviews.length },\n+\t}))\n+\n+\tconst selectedIds = new Set(products.map((p) => p.id))\n+\n+\tlet suggestions: Array = []\n+\tconst anchor = loaded[0]\n+\tif (anchor) {\n+\t\tconst related = await getRelatedProducts(\n+\t\t\tanchor.id,\n+\t\t\tanchor.category.id,\n+\t\t\tanchor.brand.id,\n+\t\t)\n+\t\tsuggestions = related.filter((p) => !selectedIds.has(p.id))\n+\t} else {\n+\t\tconst { products: top } = await getProducts({ sortBy: 'rating', limit: 8 })\n+\t\tsuggestions = top.filter((p) => !selectedIds.has(p.id))\n+\t}\n+\n+\treturn Response.json({ products, suggestions })\n+}\ndiff --git a/app/routes/api.compare.tsx b/app/routes/api.compare.tsx\nnew file mode 100644\nindex 0000000..1b83ea5\n--- /dev/null\n+++ b/app/routes/api.compare.tsx\n@@ -0,0 +1,47 @@\n+import { chat, chatParamsFromRequest, toServerSentEventsResponse } from '@tanstack/ai'\n+import { openRouterText } from '@tanstack/ai-openrouter'\n+import { getProductById } from '#app/domain/products.server.ts'\n+import {\n+\tCOMPARISON_SYSTEM_PROMPT,\n+\tbuildComparisonPrompt,\n+} from '#app/prompts/comparison.ts'\n+import { CompareForwardedProps } from '#app/schemas/chat.js'\n+import { ComparisonSchema } from '#app/schemas/comparison.ts'\n+import {\n+\tfindSimilarProducts,\n+\tsearchProducts,\n+} from '#app/tools/products.ts'\n+import { type Route } from './+types/api.compare'\n+\n+const adapter = openRouterText('nvidia/nemotron-3-super-120b-a12b:free')\n+\n+export const action = async ({ request }: Route.ActionArgs) => {\n+\tconst { messages, forwardedProps } = await chatParamsFromRequest(request)\n+\tconst props = CompareForwardedProps.safeParse(forwardedProps)\n+\tif (!props.success) {\n+\t\treturn new Response(props.error.message, { status: 400 })\n+\t}\n+\n+\tconst products = (\n+\t\tawait Promise.all(props.data.productIds.map((id) => getProductById(id)))\n+\t).filter((p): p is NonNullable => p !== null)\n+\n+\tif (products.length === 0) {\n+\t\treturn new Response('No valid products to compare.', { status: 400 })\n+\t}\n+\n+\tconst systemPrompts = [\n+\t\tCOMPARISON_SYSTEM_PROMPT,\n+\t\tbuildComparisonPrompt(products),\n+\t]\n+\n+\tconst stream = chat({\n+\t\tadapter,\n+\t\tsystemPrompts,\n+\t\tmessages,\n+\t\ttools: [searchProducts, findSimilarProducts],\n+\t\toutputSchema: ComparisonSchema,\n+\t\tstream: true,\n+\t})\n+\treturn toServerSentEventsResponse(stream)\n+}\ndiff --git a/app/routes/api.product-mini.$productId.tsx b/app/routes/api.product-mini.$productId.tsx\nnew file mode 100644\nindex 0000000..c6cd49c\n--- /dev/null\n+++ b/app/routes/api.product-mini.$productId.tsx\n@@ -0,0 +1,24 @@\n+import { getProductById } from '#app/domain/products.server.ts'\n+import { type Route } from './+types/api.product-mini.$productId'\n+\n+/**\n+ * Lightweight product info endpoint used by the `addToCart` client tool.\n+ *\n+ * The cart needs name, brand, price, and image to render an item — but\n+ * having the model pass all of those as tool arguments would be brittle.\n+ * Instead the tool passes just `{ productId, size, color, quantity }` and\n+ * the browser fetches the rest from this route before calling `addItem`.\n+ */\n+export const loader = async ({ params }: Route.LoaderArgs) => {\n+\tconst product = await getProductById(params.productId)\n+\tif (!product) {\n+\t\treturn Response.json({ error: 'Not found' }, { status: 404 })\n+\t}\n+\treturn Response.json({\n+\t\tid: product.id,\n+\t\tname: product.name,\n+\t\tbrand: product.brand.name,\n+\t\tprice: product.price,\n+\t\timageUrl: product.imageUrl,\n+\t})\n+}\ndiff --git a/app/schemas/chat.ts b/app/schemas/chat.ts\nnew file mode 100644\nindex 0000000..4ea365a\n--- /dev/null\n+++ b/app/schemas/chat.ts\n@@ -0,0 +1,29 @@\n+import { z } from 'zod'\n+\n+/**\n+ * Validates the `forwardedProps` portion of the AG-UI request body that\n+ * `useChat` POSTs. The AG-UI envelope itself (`threadId`, `runId`, `tools`,\n+ * `messages`, `context`, ...) is validated by TanStack AI's\n+ * `chatParamsFromRequest(request)` — we only need to validate the extra\n+ * fields the page sends through `forwardedProps`.\n+ *\n+ * `productId` is optional because the chat panel also lives on the products\n+ * listing page, where the customer is not looking at a specific product. In\n+ * that case the server falls back to the global system prompt only.\n+ *\n+ * Pre-built — you'll use it but won't author it.\n+ */\n+export const PageForwardedProps = z.object({\n+\tproductId: z.string().min(1).optional(),\n+})\n+\n+/**\n+ * Validates `forwardedProps` for the `/compare` page. The customer drives\n+ * the list size from there; we require at least one product so the server\n+ * can always build the system prompt.\n+ *\n+ * Also pre-built.\n+ */\n+export const CompareForwardedProps = z.object({\n+\tproductIds: z.array(z.string().min(1)).min(1),\n+})\n\\ No newline at end of file\ndiff --git a/app/schemas/comparison.ts b/app/schemas/comparison.ts\nnew file mode 100644\nindex 0000000..c69d7b9\n--- /dev/null\n+++ b/app/schemas/comparison.ts\n@@ -0,0 +1,112 @@\n+import { z } from 'zod'\n+\n+/**\n+ * The shape the model writes into on every comparison turn.\n+ *\n+ * Every `.describe(...)` call below ends up inside the JSON Schema the\n+ * model sees. The model reads those descriptions to decide what each field\n+ * should contain — so treat them as prompt engineering, not documentation.\n+ * Be specific about format (\"$129\", not \"the price\"), about who decides\n+ * (the customer's stated criteria, not yours), and about what counts as\n+ * \"good enough\" (one or two sentences, at least 2 dimensions, etc.).\n+ *\n+ * Constraints (`.min`, `.int`, `.nullable`) are how you tell the model\n+ * \"this field is required to make sense\" — an empty array of dimensions\n+ * is technically valid JSON but useless for a comparison, so we require\n+ * at least two.\n+ */\n+export const ComparisonSchema = z.object({\n+\tcriteria: z\n+\t\t.string()\n+\t\t.describe(\n+\t\t\t'The lens the customer wants this comparison through, in their own words. Examples: \"Best price-to-quality ratio\", \"Most durable for hiking\", \"Best for everyday use\". Use \"Overall comparison\" if the customer has not stated a preference yet.',\n+\t\t),\n+\tdimensions: z\n+\t\t.array(\n+\t\t\tz.object({\n+\t\t\t\tname: z\n+\t\t\t\t\t.string()\n+\t\t\t\t\t.describe(\n+\t\t\t\t\t\t'A short label for this attribute. Examples: \"Price\", \"Materials\", \"Weight\", \"Warranty\".',\n+\t\t\t\t\t),\n+\t\t\t\tvalues: z\n+\t\t\t\t\t.array(\n+\t\t\t\t\t\tz.object({\n+\t\t\t\t\t\t\tproductId: z.string().describe('The product this value belongs to.'),\n+\t\t\t\t\t\t\tvalue: z\n+\t\t\t\t\t\t\t\t.string()\n+\t\t\t\t\t\t\t\t.describe(\n+\t\t\t\t\t\t\t\t\t'A short, human-readable description of this product on this dimension. Format numbers the way a customer would expect: \"$129\", \"3 days\", \"Leather + waxed cotton\". Keep it under 10 words.',\n+\t\t\t\t\t\t\t\t),\n+\t\t\t\t\t\t}),\n+\t\t\t\t\t)\n+\t\t\t\t\t.min(1)\n+\t\t\t\t\t.describe('One entry per product being compared on this dimension.'),\n+\t\t\t\tedge: z\n+\t\t\t\t\t.string()\n+\t\t\t\t\t.nullable()\n+\t\t\t\t\t.describe(\n+\t\t\t\t\t\t'The productId that has the edge on this dimension. Set to null if the dimension is too close to call or does not have a clear winner.',\n+\t\t\t\t\t),\n+\t\t\t}),\n+\t\t)\n+\t\t.min(2)\n+\t\t.describe(\n+\t\t\t'The attributes that actually differentiate these products for the stated `criteria`. Pick the dimensions a real customer would weigh — do not enumerate every spec on the box.',\n+\t\t),\n+\trankings: z\n+\t\t.array(\n+\t\t\tz.object({\n+\t\t\t\tproductId: z.string(),\n+\t\t\t\trank: z\n+\t\t\t\t\t.number()\n+\t\t\t\t\t.int()\n+\t\t\t\t\t.min(1)\n+\t\t\t\t\t.describe('1 is the best fit for `criteria`. Each product gets a unique rank.'),\n+\t\t\t\treason: z\n+\t\t\t\t\t.string()\n+\t\t\t\t\t.describe(\n+\t\t\t\t\t\t'A short justification for this rank. Reference the dimensions that drove it. One or two sentences.',\n+\t\t\t\t\t),\n+\t\t\t}),\n+\t\t)\n+\t\t.min(1)\n+\t\t.describe(\n+\t\t\t'One entry per product being compared. Sort the array ascending by `rank` so the best fit appears first.',\n+\t\t),\n+\tsummary: z\n+\t\t.string()\n+\t\t.describe(\n+\t\t\t'A one or two sentence verdict in plain language. Imagine you are telling a friend \"here is what I would pick and why\". Do not enumerate the dimensions — the table already shows them.',\n+\t\t),\n+})\n+\n+export type Comparison = z.infer\n+\n+/**\n+ * A `DeepPartial` — every field (and every field of every\n+ * nested object/array element) is optional. This is the shape `useChat`\n+ * exposes as `partial` while the model is still writing: fields land one\n+ * at a time as their JSON tokens are parsed.\n+ *\n+ * The `` accepts this shape so it can render skeleton\n+ * placeholders for fields that haven't streamed in yet, then fill them\n+ * in as tokens arrive.\n+ */\n+export type PartialComparison = {\n+\tcriteria?: string\n+\tdimensions?: Array<{\n+\t\tname?: string\n+\t\tvalues?: Array<{\n+\t\t\tproductId?: string\n+\t\t\tvalue?: string\n+\t\t}>\n+\t\tedge?: string | null\n+\t}>\n+\trankings?: Array<{\n+\t\tproductId?: string\n+\t\trank?: number\n+\t\treason?: string\n+\t}>\n+\tsummary?: string\n+}\ndiff --git a/app/tools/care-instructions.ts b/app/tools/care-instructions.ts\nnew file mode 100644\nindex 0000000..1d440fa\n--- /dev/null\n+++ b/app/tools/care-instructions.ts\n@@ -0,0 +1,58 @@\n+import { toolDefinition } from '@tanstack/ai'\n+import { z } from 'zod'\n+import { getProductById } from '#app/domain/products.server.ts'\n+\n+const CareInstructionsInput = z.object({\n+\tproductId: z\n+\t\t.string()\n+\t\t.describe('The product to fetch care instructions for.'),\n+})\n+\n+const CareInstructionsOutput = z.object({\n+\tproductName: z.string(),\n+\tcategory: z.string(),\n+\tinstructions: z.string(),\n+})\n+\n+// Hardcoded per-category care notes.\n+const CARE_BY_CATEGORY: Record = {\n+\tAthletic:\n+\t\t'Wipe down the outer with a damp cloth after each wear. Air dry only — never tumble dry. If the laces need washing, remove them and hand-wash with mild soap.',\n+\tCasual:\n+\t\t'Spot-clean with a soft brush and mild detergent. Stuff with newspaper while drying to keep shape. Avoid direct sunlight.',\n+\tFormal:\n+\t\t'Use a leather conditioner every 2–3 months. Buff with a soft cloth. Store with shoe trees inside to retain shape.',\n+\tBoots:\n+\t\t'Apply waterproofing spray before first wear. Clean salt stains immediately with a damp cloth and white vinegar.',\n+}\n+\n+const DEFAULT_CARE =\n+\t'Wipe clean with a damp cloth as needed. Avoid the washing machine and tumble dryer — air-dry away from direct heat.'\n+\n+const getCareInstructionsDef = toolDefinition({\n+\tname: 'getCareInstructions',\n+\tdescription:\n+\t\t'Get care and cleaning instructions for a specific product. Use this when the customer asks how to wash, clean, or care for their item, or \"are these machine washable?\".',\n+\tinputSchema: CareInstructionsInput,\n+\toutputSchema: CareInstructionsOutput,\n+\tlazy: true,\n+})\n+\n+export const getCareInstructions = getCareInstructionsDef.server(\n+\tasync ({ productId }) => {\n+\t\tconst product = await getProductById(productId)\n+\t\tif (!product) {\n+\t\t\treturn {\n+\t\t\t\tproductName: 'unknown',\n+\t\t\t\tcategory: 'unknown',\n+\t\t\t\tinstructions: DEFAULT_CARE,\n+\t\t\t}\n+\t\t}\n+\t\tconst category = product.category.name\n+\t\treturn {\n+\t\t\tproductName: product.name,\n+\t\t\tcategory,\n+\t\t\tinstructions: CARE_BY_CATEGORY[category] ?? DEFAULT_CARE,\n+\t\t}\n+\t},\n+)\ndiff --git a/app/tools/cart.ts b/app/tools/cart.ts\nnew file mode 100644\nindex 0000000..178bc90\n--- /dev/null\n+++ b/app/tools/cart.ts\n@@ -0,0 +1,44 @@\n+import { toolDefinition } from '@tanstack/ai'\n+import { z } from 'zod'\n+\n+const AddToCartInput = z.object({\n+\tproductId: z\n+\t\t.string()\n+\t\t.describe(\n+\t\t\t'The id of the product to add. Comes from a product card the customer just saw, or the currently viewed product.',\n+\t\t),\n+\tproductName: z\n+\t\t.string()\n+\t\t.describe(\n+\t\t\t\"Display name of the product. Shown to the customer in the approval prompt so they can see what's about to be added before they confirm.\",\n+\t\t),\n+\tsize: z\n+\t\t.string()\n+\t\t.describe(\n+\t\t\t'Size variation (e.g. \"9\", \"10\", \"M\", \"L\"). Must be one of the in-stock variations listed in the product context. Do not call this tool without a size — if the customer did not pick one, ask them first.',\n+\t\t),\n+\tcolor: z\n+\t\t.string()\n+\t\t.describe(\n+\t\t\t'Color variation (e.g. \"Black\", \"Red\"). Must be one of the in-stock variations listed in the product context. Do not call this tool without a color — if the customer did not pick one, ask them first.',\n+\t\t),\n+\tquantity: z\n+\t\t.number()\n+\t\t.int()\n+\t\t.min(1)\n+\t\t.max(10)\n+\t\t.describe('How many to add. Default to 1 if not specified.'),\n+})\n+\n+const AddToCartOutput = z.object({\n+\tadded: z.boolean(),\n+})\n+\n+export const addToCartDef = toolDefinition({\n+\tname: 'addToCart',\n+\tdescription:\n+\t\t\"Add a product to the customer's shopping cart. Use this only when (a) the customer explicitly asks to add something AND (b) you know both the size and color from the customer. If size or color is missing, call `showVariations` first so the customer can see the table and pick — do not call addToCart with guessed values. The customer will see what is about to be added and click Yes or No before this tool actually runs.\",\n+\tinputSchema: AddToCartInput,\n+\toutputSchema: AddToCartOutput,\n+\tneedsApproval: true,\n+})\ndiff --git a/app/tools/navigation.ts b/app/tools/navigation.ts\nnew file mode 100644\nindex 0000000..d3f5d57\n--- /dev/null\n+++ b/app/tools/navigation.ts\n@@ -0,0 +1,37 @@\n+import { toolDefinition } from '@tanstack/ai'\n+import { z } from 'zod'\n+\n+const NAVIGABLE_PAGES = {\n+\t'/': 'The home page (hero, featured products, categories).',\n+\t'/cart': \"The customer's shopping cart.\",\n+\t'/products':\n+\t\t'The full product catalog. Use this for general browse requests when no specific filter applies (for filtered search, use `searchProducts` instead).',\n+\t'/about': 'The \"about EpicStore\" page.',\n+\t'/contact': 'The contact form.',\n+} as const\n+\n+type Destination = keyof typeof NAVIGABLE_PAGES\n+\n+const destinationDoc = Object.entries(NAVIGABLE_PAGES)\n+\t.map(([path, desc]) => `- ${path} — ${desc}`)\n+\t.join('\\n')\n+\n+const NavigateToInput = z.object({\n+\tdestination: z\n+\t\t.enum(\n+\t\t\tObject.keys(NAVIGABLE_PAGES) as [Destination, ...Array],\n+\t\t)\n+\t\t.describe(`Which page to take the customer to. Pick one of:\\n${destinationDoc}`),\n+})\n+\n+const NavigateToOutput = z.object({\n+\tdestination: z.string(),\n+})\n+\n+export const navigateToDef = toolDefinition({\n+\tname: 'navigateTo',\n+\tdescription:\n+\t\t'Take the customer to a page in the EpicStore site. Use this when they ask to go somewhere — for example \"take me to the cart\", \"show me all products\", \"go back home\", \"open the about page\".',\n+\tinputSchema: NavigateToInput,\n+\toutputSchema: NavigateToOutput,\n+})\ndiff --git a/app/tools/products.ts b/app/tools/products.ts\nnew file mode 100644\nindex 0000000..d1b0ea3\n--- /dev/null\n+++ b/app/tools/products.ts\n@@ -0,0 +1,118 @@\n+import { toolDefinition } from '@tanstack/ai'\n+import { z } from 'zod'\n+import {\n+\tgetProductById,\n+\tgetProducts,\n+\tgetRelatedProducts,\n+} from '#app/domain/products.server.ts'\n+\n+const ProductInfo = z.object({\n+\tid: z.string(),\n+\tname: z.string(),\n+\tdescription: z.string(),\n+\timageUrl: z.string(),\n+\tprice: z.number(),\n+\treviewScore: z.number(),\n+\tbrand: z.object({ id: z.string(), name: z.string() }),\n+\t_count: z.object({ reviews: z.number() }),\n+})\n+\n+const ProductList = z.object({\n+\tproducts: z.array(ProductInfo),\n+})\n+\n+const SearchProductsInput = z.object({\n+\tquery: z\n+\t\t.string()\n+\t\t.describe('Free-text search across product names and descriptions.'),\n+\tbrand: z\n+\t\t.string()\n+\t\t.optional()\n+\t\t.describe('Optional brand name to filter by, e.g. \"Nike\".'),\n+\tcategory: z\n+\t\t.string()\n+\t\t.optional()\n+\t\t.describe('Optional category to filter by, e.g. \"Athletic\".'),\n+\tpriceMax: z\n+\t\t.number()\n+\t\t.optional()\n+\t\t.describe(\n+\t\t\t'Optional maximum price. Returns only products at or below this price.',\n+\t\t),\n+\tlimit: z\n+\t\t.number()\n+\t\t.int()\n+\t\t.min(1)\n+\t\t.max(10)\n+\t\t.optional()\n+\t\t.describe('How many products to return. Defaults to 5.'),\n+})\n+\n+const findSimilarProductsDef = toolDefinition({\n+\tname: 'findSimilarProducts',\n+\tdescription:\n+\t\t'Find products similar to a given product (same category and brand). Use this when the customer wants alternatives — for example when their preferred size is out of stock, or when they want to compare a few options.',\n+\tinputSchema: z.object({\n+\t\tproductId: z\n+\t\t\t.string()\n+\t\t\t.describe('The id of the product to find similar items for.'),\n+\t}),\n+\toutputSchema: ProductList,\n+})\n+\n+export const findSimilarProducts = findSimilarProductsDef.server(\n+\tasync ({ productId }) => {\n+\t\tconst product = await getProductById(productId)\n+\t\tif (!product) return { products: [] }\n+\t\tconst products = await getRelatedProducts(\n+\t\t\tproductId,\n+\t\t\tproduct.category.id,\n+\t\t\tproduct.brand.id,\n+\t\t)\n+\t\treturn { products }\n+\t},\n+)\n+\n+const recommendProductsDef = toolDefinition({\n+\tname: 'recommendProducts',\n+\tdescription:\n+\t\t'Recommend top-rated products from the catalog. Use this when the customer is browsing and asks for suggestions or popular picks.',\n+\tinputSchema: z.object({\n+\t\tlimit: z\n+\t\t\t.number()\n+\t\t\t.int()\n+\t\t\t.min(1)\n+\t\t\t.max(10)\n+\t\t\t.optional()\n+\t\t\t.describe('How many products to recommend. Defaults to 5.'),\n+\t}),\n+\toutputSchema: ProductList,\n+})\n+\n+export const recommendProducts = recommendProductsDef.server(\n+\tasync ({ limit = 5 }) => {\n+\t\tconst { products } = await getProducts({ sortBy: 'rating', limit })\n+\t\treturn { products }\n+\t},\n+)\n+\n+const searchProductsDef = toolDefinition({\n+\tname: 'searchProducts',\n+\tdescription:\n+\t\t'Search the EpicStore catalog by free-text query and optional filters. Use this whenever the customer asks about products that are not the one they are currently looking at.',\n+\tinputSchema: SearchProductsInput,\n+\toutputSchema: ProductList,\n+})\n+\n+export const searchProducts = searchProductsDef.server(\n+\tasync ({ query, brand, category, priceMax, limit = 5 }) => {\n+\t\tconst { products } = await getProducts({\n+\t\t\tsearch: query,\n+\t\t\tbrand: brand ? [brand] : undefined,\n+\t\t\tcategory: category ? [category] : undefined,\n+\t\t\tpriceMax,\n+\t\t\tlimit,\n+\t\t})\n+\t\treturn { products }\n+\t},\n+)\ndiff --git a/app/tools/restock.ts b/app/tools/restock.ts\nnew file mode 100644\nindex 0000000..6a46581\n--- /dev/null\n+++ b/app/tools/restock.ts\n@@ -0,0 +1,40 @@\n+import { toolDefinition } from '@tanstack/ai'\n+import { z } from 'zod'\n+\n+const SubscribeToRestockInput = z.object({\n+\tproductId: z.string().describe('The product to watch for restock.'),\n+\tsize: z.string().describe('Which size variation to watch.'),\n+\tcolor: z.string().describe('Which color variation to watch.'),\n+\temail: z\n+\t\t.string()\n+\t\t.email()\n+\t\t.describe(\n+\t\t\t\"The customer's email address. Ask them for it if you do not have it.\",\n+\t\t),\n+})\n+\n+const SubscribeToRestockOutput = z.object({\n+\tsubscribed: z.boolean(),\n+\tmessage: z.string(),\n+})\n+\n+const subscribeToRestockDef = toolDefinition({\n+\tname: 'subscribeToRestock',\n+\tdescription:\n+\t\t'Sign the customer up for an email alert when a specific size + color combination is back in stock. Use this when the customer wants to be notified about a variation that is currently out of stock.',\n+\tinputSchema: SubscribeToRestockInput,\n+\toutputSchema: SubscribeToRestockOutput,\n+\tlazy: true,\n+})\n+\n+export const subscribeToRestock = subscribeToRestockDef.server(\n+\tasync ({ size, color, email }) => {\n+\t\t// In a real store this would write to a `restock_alerts` table and\n+\t\t// fire a notification when stock changes. For the workshop we just\n+\t\t// confirm the subscription.\n+\t\treturn {\n+\t\t\tsubscribed: true,\n+\t\t\tmessage: `Got it — we'll email ${email} when size ${size} in ${color} is back in stock.`,\n+\t\t}\n+\t},\n+)\ndiff --git a/app/tools/return-policy.ts b/app/tools/return-policy.ts\nnew file mode 100644\nindex 0000000..4c9c404\n--- /dev/null\n+++ b/app/tools/return-policy.ts\n@@ -0,0 +1,22 @@\n+import { toolDefinition } from '@tanstack/ai'\n+import { z } from 'zod'\n+\n+const ReturnPolicyOutput = z.object({\n+\tpolicy: z.string(),\n+})\n+\n+const RETURN_POLICY =\n+\t'EpicStore accepts returns within 30 days of delivery for a full refund, provided items are unworn, unwashed, and in their original packaging with tags attached. Return shipping is free for US orders — print a prepaid label from your account. Sale items marked \"final sale\" are not eligible. Refunds typically post to your original payment method within 5–7 business days of receiving the return.'\n+\n+const getReturnPolicyDef = toolDefinition({\n+\tname: 'getReturnPolicy',\n+\tdescription:\n+\t\t\"Get EpicStore's return and refund policy. Use this when the customer asks about returns, refunds, exchanges, or how long they have to send something back.\",\n+\tinputSchema: z.object({}),\n+\toutputSchema: ReturnPolicyOutput,\n+\tlazy: true,\n+})\n+\n+export const getReturnPolicy = getReturnPolicyDef.server(() => ({\n+\tpolicy: RETURN_POLICY,\n+}))\ndiff --git a/app/tools/shipping.ts b/app/tools/shipping.ts\nnew file mode 100644\nindex 0000000..74cf814\n--- /dev/null\n+++ b/app/tools/shipping.ts\n@@ -0,0 +1,36 @@\n+import { toolDefinition } from '@tanstack/ai'\n+import { z } from 'zod'\n+\n+const ShippingEstimateInput = z.object({\n+\tzipCode: z\n+\t\t.string()\n+\t\t.regex(/^\\d{5}(-\\d{4})?$/, 'US ZIP code (5 digits or ZIP+4).')\n+\t\t.describe('US ZIP code where the order would be shipped.'),\n+})\n+\n+const ShippingEstimateOutput = z.object({\n+\tcost: z.number(),\n+\tdays: z.number(),\n+\tregion: z.string(),\n+})\n+\n+function estimate(zipCode: string) {\n+\tconst prefix = zipCode[0]\n+\tif (prefix === '9') return { cost: 5, days: 2, region: 'West Coast' }\n+\tif (prefix === '0' || prefix === '1')\n+\t\treturn { cost: 5, days: 3, region: 'East Coast' }\n+\treturn { cost: 8, days: 5, region: 'Other US' }\n+}\n+\n+const getShippingEstimateDef = toolDefinition({\n+\tname: 'getShippingEstimate',\n+\tdescription:\n+\t\t'Estimate shipping cost and delivery time for an order to a given US ZIP code. Use this when the customer asks \"how long does shipping take?\", \"how much for shipping to X?\", or similar.',\n+\tinputSchema: ShippingEstimateInput,\n+\toutputSchema: ShippingEstimateOutput,\n+\tlazy: true,\n+})\n+\n+export const getShippingEstimate = getShippingEstimateDef.server(\n+\t({ zipCode }) => estimate(zipCode),\n+)\ndiff --git a/app/tools/size-guide.ts b/app/tools/size-guide.ts\nnew file mode 100644\nindex 0000000..1490365\n--- /dev/null\n+++ b/app/tools/size-guide.ts\n@@ -0,0 +1,51 @@\n+import { toolDefinition } from '@tanstack/ai'\n+import { z } from 'zod'\n+import { getProductById } from '#app/domain/products.server.ts'\n+\n+const SizeGuideInput = z.object({\n+\tproductId: z\n+\t\t.string()\n+\t\t.describe('The product to fetch the size guide for.'),\n+})\n+\n+const SizeGuideOutput = z.object({\n+\tbrand: z.string(),\n+\tproductName: z.string(),\n+\tguide: z.string(),\n+})\n+\n+// Hardcoded per-brand sizing notes. In a real store these would come from a\n+// brands table or CMS — for the workshop we keep them inline.\n+const SIZE_GUIDES: Record = {\n+\tNike: 'Nike footwear generally runs about half a size small. If you usually wear a 10, consider a 10.5. Their size 10 is approximately 28cm / 11 in.',\n+\tAdidas:\n+\t\t'Adidas runs true to size. Their size 10 is approximately 28.5cm / 11.2 in.',\n+\tPuma: 'Puma footwear runs slightly large. Order a half size down if you have a narrow foot.',\n+\t'New Balance':\n+\t\t'New Balance offers wide and extra-wide variants. Their standard size 10 is 28cm / 11 in.',\n+}\n+\n+const DEFAULT_GUIDE =\n+\t'No specific size guide on file for this brand. As a general rule, our size 10 is approximately 28cm / 11 in. If you are between sizes, we recommend sizing up.'\n+\n+const getSizeGuideDef = toolDefinition({\n+\tname: 'getSizeGuide',\n+\tdescription:\n+\t\t'Get the size guide for a specific product. Use this when the customer asks about sizing, fit, \"what size should I get?\", \"does this run small?\", or similar fit-related questions.',\n+\tinputSchema: SizeGuideInput,\n+\toutputSchema: SizeGuideOutput,\n+\tlazy: true,\n+})\n+\n+export const getSizeGuide = getSizeGuideDef.server(async ({ productId }) => {\n+\tconst product = await getProductById(productId)\n+\tif (!product) {\n+\t\treturn { brand: 'unknown', productName: 'unknown', guide: DEFAULT_GUIDE }\n+\t}\n+\tconst brand = product.brand.name\n+\treturn {\n+\t\tbrand,\n+\t\tproductName: product.name,\n+\t\tguide: SIZE_GUIDES[brand] ?? DEFAULT_GUIDE,\n+\t}\n+})\ndiff --git a/app/tools/variations.ts b/app/tools/variations.ts\nnew file mode 100644\nindex 0000000..95f127b\n--- /dev/null\n+++ b/app/tools/variations.ts\n@@ -0,0 +1,43 @@\n+import { toolDefinition } from '@tanstack/ai'\n+import { z } from 'zod'\n+import { getProductById } from '#app/domain/products.server.ts'\n+\n+const ShowVariationsInput = z.object({\n+\tproductId: z\n+\t\t.string()\n+\t\t.describe('The id of the product whose variations should be shown.'),\n+})\n+\n+const ShowVariationsOutput = z.object({\n+\tproductName: z.string(),\n+\tvariations: z.array(\n+\t\tz.object({\n+\t\t\tsize: z.string(),\n+\t\t\tcolor: z.string(),\n+\t\t\tquantity: z.number(),\n+\t\t}),\n+\t),\n+})\n+\n+const showVariationsDef = toolDefinition({\n+\tname: 'showVariations',\n+\tdescription:\n+\t\t'Show the customer a table of all size × color variations for a product, with stock counts per cell. Use this when the customer wants to add a product to their cart but has not picked a size or color yet, or when they ask \"what sizes are available?\" / \"what colors do you have?\". Calling this tool renders an interactive table in the chat — the customer reads it and then tells you what they want.',\n+\tinputSchema: ShowVariationsInput,\n+\toutputSchema: ShowVariationsOutput,\n+})\n+\n+export const showVariations = showVariationsDef.server(async ({ productId }) => {\n+\tconst product = await getProductById(productId)\n+\tif (!product) {\n+\t\treturn { productName: 'unknown product', variations: [] }\n+\t}\n+\treturn {\n+\t\tproductName: product.name,\n+\t\tvariations: product.variations.map((v) => ({\n+\t\t\tsize: v.size,\n+\t\t\tcolor: v.color,\n+\t\t\tquantity: v.quantity,\n+\t\t})),\n+\t}\n+})"]

app/components/compare-button.tsx-0+22App 1Copy app 2 file to app 1 (Option+Command to sync without opening)Copy app 1 file to app 2 (Option+Command to sync without opening)App 2

app/components/comparison-chat.tsx-0+147App 1Copy app 2 file to app 1 (Option+Command to sync without opening)Copy app 1 file to app 2 (Option+Command to sync without opening)App 2

app/components/comparison-table.tsx-0+163App 1Copy app 2 file to app 1 (Option+Command to sync without opening)Copy app 1 file to app 2 (Option+Command to sync without opening)App 2

app/components/header.tsx-17+20App 1Copy app 2 file to app 1 (Option+Command to sync without opening)Copy app 1 file to app 2 (Option+Command to sync without opening)App 2

app/components/product-card.tsx-17+46App 1Copy app 2 file to app 1 (Option+Command to sync without opening)Copy app 1 file to app 2 (Option+Command to sync without opening)App 2

app/components/product-chat.tsx-99+301App 1Copy app 2 file to app 1 (Option+Command to sync without opening)Copy app 1 file to app 2 (Option+Command to sync without opening)App 2

app/components/skeleton.tsx-0+12App 1Copy app 2 file to app 1 (Option+Command to sync without opening)Copy app 1 file to app 2 (Option+Command to sync without opening)App 2

app/contexts/compare.tsx-0+102App 1Copy app 2 file to app 1 (Option+Command to sync without opening)Copy app 1 file to app 2 (Option+Command to sync without opening)App 2

app/lib/cart-actions.ts-0+51App 1Copy app 2 file to app 1 (Option+Command to sync without opening)Copy app 1 file to app 2 (Option+Command to sync without opening)App 2

app/prompts/comparison.ts-0+26App 1Copy app 2 file to app 1 (Option+Command to sync without opening)Copy app 1 file to app 2 (Option+Command to sync without opening)App 2

app/prompts/system.ts-0+33App 1Copy app 2 file to app 1 (Option+Command to sync without opening)Copy app 1 file to app 2 (Option+Command to sync without opening)App 2

app/root.tsx-13+16App 1Copy app 2 file to app 1 (Option+Command to sync without opening)Copy app 1 file to app 2 (Option+Command to sync without opening)App 2

app/routes/_landing/compare.tsx-0+152App 1Copy app 2 file to app 1 (Option+Command to sync without opening)Copy app 1 file to app 2 (Option+Command to sync without opening)App 2

app/routes/_landing/products/$productId.tsx-26+55App 1Copy app 2 file to app 1 (Option+Command to sync without opening)Copy app 1 file to app 2 (Option+Command to sync without opening)App 2

app/routes/api.chat.tsx-31+69App 1Copy app 2 file to app 1 (Option+Command to sync without opening)Copy app 1 file to app 2 (Option+Command to sync without opening)App 2

app/routes/api.compare-data.tsx-0+59App 1Copy app 2 file to app 1 (Option+Command to sync without opening)Copy app 1 file to app 2 (Option+Command to sync without opening)App 2

app/routes/api.compare.tsx-0+47App 1Copy app 2 file to app 1 (Option+Command to sync without opening)Copy app 1 file to app 2 (Option+Command to sync without opening)App 2

app/routes/api.product-mini.$productId.tsx-0+24App 1Copy app 2 file to app 1 (Option+Command to sync without opening)Copy app 1 file to app 2 (Option+Command to sync without opening)App 2

app/schemas/chat.ts-0+29App 1Copy app 2 file to app 1 (Option+Command to sync without opening)Copy app 1 file to app 2 (Option+Command to sync without opening)App 2

app/schemas/comparison.ts-0+112App 1Copy app 2 file to app 1 (Option+Command to sync without opening)Copy app 1 file to app 2 (Option+Command to sync without opening)App 2

app/tools/care-instructions.ts-0+58App 1Copy app 2 file to app 1 (Option+Command to sync without opening)Copy app 1 file to app 2 (Option+Command to sync without opening)App 2

app/tools/cart.ts-0+44App 1Copy app 2 file to app 1 (Option+Command to sync without opening)Copy app 1 file to app 2 (Option+Command to sync without opening)App 2

app/tools/navigation.ts-0+37App 1Copy app 2 file to app 1 (Option+Command to sync without opening)Copy app 1 file to app 2 (Option+Command to sync without opening)App 2

app/tools/products.ts-0+118App 1Copy app 2 file to app 1 (Option+Command to sync without opening)Copy app 1 file to app 2 (Option+Command to sync without opening)App 2

app/tools/restock.ts-0+40App 1Copy app 2 file to app 1 (Option+Command to sync without opening)Copy app 1 file to app 2 (Option+Command to sync without opening)App 2

app/tools/return-policy.ts-0+22App 1Copy app 2 file to app 1 (Option+Command to sync without opening)Copy app 1 file to app 2 (Option+Command to sync without opening)App 2

app/tools/shipping.ts-0+36App 1Copy app 2 file to app 1 (Option+Command to sync without opening)Copy app 1 file to app 2 (Option+Command to sync without opening)App 2

app/tools/size-guide.ts-0+51App 1Copy app 2 file to app 1 (Option+Command to sync without opening)Copy app 1 file to app 2 (Option+Command to sync without opening)App 2

app/tools/variations.ts-0+43App 1Copy app 2 file to app 1 (Option+Command to sync without opening)Copy app 1 file to app 2 (Option+Command to sync without opening)App 2

app/components/compare-button.tsx-0+22App 1Copy app 2 file to app 1 (Option+Command to sync without opening)Copy app 1 file to app 2 (Option+Command to sync without opening)App 2

app/components/comparison-chat.tsx-0+147App 1Copy app 2 file to app 1 (Option+Command to sync without opening)Copy app 1 file to app 2 (Option+Command to sync without opening)App 2

app/components/comparison-table.tsx-0+163App 1Copy app 2 file to app 1 (Option+Command to sync without opening)Copy app 1 file to app 2 (Option+Command to sync without opening)App 2

app/components/header.tsx-17+20App 1Copy app 2 file to app 1 (Option+Command to sync without opening)Copy app 1 file to app 2 (Option+Command to sync without opening)App 2

app/components/product-card.tsx-17+46App 1Copy app 2 file to app 1 (Option+Command to sync without opening)Copy app 1 file to app 2 (Option+Command to sync without opening)App 2

app/components/product-chat.tsx-99+301App 1Copy app 2 file to app 1 (Option+Command to sync without opening)Copy app 1 file to app 2 (Option+Command to sync without opening)App 2

app/components/skeleton.tsx-0+12App 1Copy app 2 file to app 1 (Option+Command to sync without opening)Copy app 1 file to app 2 (Option+Command to sync without opening)App 2

app/contexts/compare.tsx-0+102App 1Copy app 2 file to app 1 (Option+Command to sync without opening)Copy app 1 file to app 2 (Option+Command to sync without opening)App 2

app/lib/cart-actions.ts-0+51App 1Copy app 2 file to app 1 (Option+Command to sync without opening)Copy app 1 file to app 2 (Option+Command to sync without opening)App 2

app/prompts/comparison.ts-0+26App 1Copy app 2 file to app 1 (Option+Command to sync without opening)Copy app 1 file to app 2 (Option+Command to sync without opening)App 2

app/prompts/system.ts-0+33App 1Copy app 2 file to app 1 (Option+Command to sync without opening)Copy app 1 file to app 2 (Option+Command to sync without opening)App 2

app/root.tsx-13+16App 1Copy app 2 file to app 1 (Option+Command to sync without opening)Copy app 1 file to app 2 (Option+Command to sync without opening)App 2

app/routes/_landing/compare.tsx-0+152App 1Copy app 2 file to app 1 (Option+Command to sync without opening)Copy app 1 file to app 2 (Option+Command to sync without opening)App 2

app/routes/_landing/products/$productId.tsx-26+55App 1Copy app 2 file to app 1 (Option+Command to sync without opening)Copy app 1 file to app 2 (Option+Command to sync without opening)App 2

app/routes/api.chat.tsx-31+69App 1Copy app 2 file to app 1 (Option+Command to sync without opening)Copy app 1 file to app 2 (Option+Command to sync without opening)App 2

app/routes/api.compare-data.tsx-0+59App 1Copy app 2 file to app 1 (Option+Command to sync without opening)Copy app 1 file to app 2 (Option+Command to sync without opening)App 2

app/routes/api.compare.tsx-0+47App 1Copy app 2 file to app 1 (Option+Command to sync without opening)Copy app 1 file to app 2 (Option+Command to sync without opening)App 2

app/routes/api.product-mini.$productId.tsx-0+24App 1Copy app 2 file to app 1 (Option+Command to sync without opening)Copy app 1 file to app 2 (Option+Command to sync without opening)App 2

app/schemas/chat.ts-0+29App 1Copy app 2 file to app 1 (Option+Command to sync without opening)Copy app 1 file to app 2 (Option+Command to sync without opening)App 2

app/schemas/comparison.ts-0+112App 1Copy app 2 file to app 1 (Option+Command to sync without opening)Copy app 1 file to app 2 (Option+Command to sync without opening)App 2

app/tools/care-instructions.ts-0+58App 1Copy app 2 file to app 1 (Option+Command to sync without opening)Copy app 1 file to app 2 (Option+Command to sync without opening)App 2

app/tools/cart.ts-0+44App 1Copy app 2 file to app 1 (Option+Command to sync without opening)Copy app 1 file to app 2 (Option+Command to sync without opening)App 2

app/tools/navigation.ts-0+37App 1Copy app 2 file to app 1 (Option+Command to sync without opening)Copy app 1 file to app 2 (Option+Command to sync without opening)App 2

app/tools/products.ts-0+118App 1Copy app 2 file to app 1 (Option+Command to sync without opening)Copy app 1 file to app 2 (Option+Command to sync without opening)App 2

app/tools/restock.ts-0+40App 1Copy app 2 file to app 1 (Option+Command to sync without opening)Copy app 1 file to app 2 (Option+Command to sync without opening)App 2

app/tools/return-policy.ts-0+22App 1Copy app 2 file to app 1 (Option+Command to sync without opening)Copy app 1 file to app 2 (Option+Command to sync without opening)App 2

app/tools/shipping.ts-0+36App 1Copy app 2 file to app 1 (Option+Command to sync without opening)Copy app 1 file to app 2 (Option+Command to sync without opening)App 2

app/tools/size-guide.ts-0+51App 1Copy app 2 file to app 1 (Option+Command to sync without opening)Copy app 1 file to app 2 (Option+Command to sync without opening)App 2

app/tools/variations.ts-0+43App 1Copy app 2 file to app 1 (Option+Command to sync without opening)Copy app 1 file to app 2 (Option+Command to sync without opening)App 2

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