MVPHEADmaster

23 files changed, 570 insertions, 114 deletions

diff --git a/.gitignore b/.gitignore
index c907762..42e5ded 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,5 @@
 .DS_Store
 **/dist
 node_modules
+.vercel
+.env.local
diff --git a/api/.env b/api/.env
new file mode 100644
index 0000000..6a558ef
--- /dev/null
+++ b/api/.env
@@ -0,0 +1 @@
+OPENAI_API="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"
\ No newline at end of file
diff --git a/api/ai.ts b/api/ai.ts
new file mode 100644
index 0000000..b2a3ee7
--- /dev/null
+++ b/api/ai.ts
@@ -0,0 +1,93 @@
+import { OpenAI } from "openai";
+
+const basePrompt = `
+You are the backend logic for a game like the New York Times’ *Connections*.
+
+A player gives you four words. Your job is to return the **most clever, satisfying category** that all four words fit into — as if you were designing a high-quality puzzle.
+
+🎯 Output must be JSON:
+{"categoryName": "Short Title (≤5 words)", "reason": "Brief, clear explanation why each word fits"}
+
+🧠 Your answer should feel:
+- **Clever and insightful** (not generic)
+- **Tight and specific** (all 4 words must fit cleanly)
+- **Surprising but satisfying** (think lateral thinking, not just surface meaning)
+
+🧩 Great connections are often based on:
+1. **Grammar or structure** (e.g., homonyms, stress-shifting words)
+2. **Wordplay** (prefixes, rhymes, common idioms)
+3. **Cultural patterns** (slang, media, jokes, Jeopardy-style trivia)
+4. **Domain-specific themes** (tech terms, sports slang, myth references)
+
+💡 Think like a puzzle maker. Test your idea:
+- Would a smart, skeptical puzzle fan say “Ohhh, nice”?
+- Does **each word** clearly belong?
+- If not, scrap it and try another approach.
+
+Avoid weak categories like:
+- “Verbs” ❌ (too broad)
+- “Things you can flip” ❌ (tenuous logic)
+- “Nice things” ❌ (vague)
+
+✔ Examples of great answers:
+[record, permit, insult, reject] → "Stress-Shifting Words"  
+[day, head, toe, man] → "___ to ___"  
+[brew, java, mud, rocketfuel] → "Slang for Coffee"  
+[duck, bank, mail, plant] → "Nouns That Are Verbs"  
+[transexual, muslims, media, taxes] → "Fox News Scapegoats"  
+
+⚠️ Don’t overreach. Do not invent connections — if it’s not clean, try a new angle.
+
+Mandatory check before submitting:
+- Word 1: does it clearly fit?
+- Word 2: does it clearly fit?
+- Word 3: does it clearly fit?
+- Word 4: does it clearly fit?
+
+If even one doesn’t, the category is wrong. Start over.
+
+Keep it **fun**, **tight**, and **clever**. Never lazy. Never vague.
+
+🎯 Output must be JSON:
+{"categoryName": "Short Title (≤5 words)", "reason": "Brief, clear explanation why each word fits"}
+`;
+
+let client: OpenAI;
+
+const getCompletion = async ({
+  messages,
+}: {
+  messages: string[];
+}): Promise<string> => {
+  if (!client) {
+    client = new OpenAI({ apiKey: process.env.OPENAI_API! });
+  }
+  const completion = await client.chat.completions.create({
+    model: "gpt-4.1",
+    messages: messages.map((message) => ({
+      role: "developer",
+      content: message,
+    })),
+  });
+  return completion.choices[0].message.content!;
+};
+
+export const getGroupName = async (
+  words: string[]
+): Promise<{
+  categoryName: string;
+  reason: string;
+}> => {
+  let candidate: { categoryName: string; reason: string };
+  const messages = [
+    basePrompt,
+    `Now, given these four words: ${[words.join(", ")]}`,
+  ];
+  candidate = JSON.parse(await getCompletion({ messages }));
+  if (!candidate.categoryName || !candidate.reason) {
+    throw new Error(`Got invalid response!`);
+  }
+  console.log(`Got candidate: ${JSON.stringify(candidate)}`);
+
+  return candidate!;
+};
diff --git a/api/index.ts b/api/index.ts
new file mode 100644
index 0000000..59c4920
--- /dev/null
+++ b/api/index.ts
@@ -0,0 +1,52 @@
+import dotenv from "dotenv";
+import express, {
+  type Request,
+  type Response,
+  type NextFunction,
+} from "express";
+import cors from "cors";
+import { WORDLIST } from "./wordlist";
+import { getGroupName as getCategoryName } from "./ai";
+import { rateLimit } from "express-rate-limit";
+
+dotenv.config();
+
+const PORT = 4000;
+
+const limiter = rateLimit({
+  windowMs: 1 * 60 * 1000, //5 minute
+  limit: 20, // 20 requests per minute
+});
+
+const app = express();
+app.use(cors());
+app.use(express.json());
+app.use(limiter);
+
+app.set("trust proxy", "loopback"); // specify a single subnet
+
+app.get("/api/", (req, res) => {
+  res.send("HEALTHY");
+});
+
+app.get("/api/random-words", (req, res) => {
+  let words: string[] = [];
+  while (words.length < 16) {
+    const candidateWord = WORDLIST[Math.round(Math.random() * WORDLIST.length)];
+    if (candidateWord.length < 4) {
+      continue;
+    }
+    words.push(candidateWord);
+  }
+  res.send(words);
+});
+
+app.post("/api/group-words", async (req, res) => {
+  res.send(await getCategoryName(req.body.words));
+});
+
+app.listen(PORT, () => {
+  console.log("Initialized");
+});
+
+export default app;
diff --git a/backend/package.json b/api/package.json
index e92b78d..cafccef 100644
--- a/backend/package.json
+++ b/api/package.json
@@ -7,7 +7,10 @@
   },
   "dependencies": {
     "cors": "^2.8.5",
-    "express": "^5.1.0"
+    "dotenv": "^16.5.0",
+    "express": "^5.1.0",
+    "express-rate-limit": "^7.5.0",
+    "openai": "^5.3.0"
   },
   "devDependencies": {
     "@types/cors": "^2.8.19",
diff --git a/api/tsconfig.json b/api/tsconfig.json
new file mode 100644
index 0000000..c11147e
--- /dev/null
+++ b/api/tsconfig.json
@@ -0,0 +1,10 @@
+{
+  "compilerOptions": {
+    "lib": ["ES2022", "DOM"],
+    "module": "nodenext",
+    "moduleResolution": "nodenext",
+    "allowSyntheticDefaultImports": true,
+    "strict": true
+  },
+  "include": ["**/*.ts"]
+}
diff --git a/backend/tsup.config.ts b/api/tsup.config.ts
index 0300243..e8085ad 100644
--- a/backend/tsup.config.ts
+++ b/api/tsup.config.ts
@@ -1,7 +1,7 @@
 import { defineConfig } from "tsup";
 
 export default defineConfig({
-  entry: ["src/index.ts"],
+  entry: ["index.ts"],
   splitting: false,
   sourcemap: true,
   clean: true,
diff --git a/backend/src/wordlist.ts b/api/wordlist.ts
index f71e8f3..f71e8f3 100644
--- a/backend/src/wordlist.ts
+++ b/api/wordlist.ts
diff --git a/backend/src/index.ts b/backend/src/index.ts
deleted file mode 100644
index 58c5080..0000000
--- a/backend/src/index.ts
+++ /dev/null
@@ -1,23 +0,0 @@
-import express from "express";
-import cors from "cors";
-import { WORDLIST } from "./wordlist";
-
-const PORT = 4000;
-const app = express();
-app.use(cors());
-
-app.get("/healthcheck", (req, res) => {
-  res.send("HEALTHY");
-});
-
-app.get("/random-words", (req, res) => {
-  res.send(
-    new Array(16)
-      .fill(0)
-      .map(() => WORDLIST[Math.round(Math.random() * WORDLIST.length)])
-  );
-});
-
-app.listen(PORT, () => {
-  console.log("Initialized");
-});
diff --git a/backend/tsconfig.json b/backend/tsconfig.json
deleted file mode 100644
index 2e42f37..0000000
--- a/backend/tsconfig.json
+++ /dev/null
@@ -1,8 +0,0 @@
-{
-  "compilerOptions": {
-    "lib": ["ES2022"],
-    "module": "es2022",
-    "allowSyntheticDefaultImports": true
-  },
-  "include": ["src/**/*"]
-}
diff --git a/frontend/package.json b/frontend/package.json
index bc61e8c..7feb939 100644
--- a/frontend/package.json
+++ b/frontend/package.json
@@ -16,6 +16,7 @@
     "react-dom": "^19.1.0",
     "react-scripts": "5.0.1",
     "typescript": "^4.9.5",
+    "typewriter-effect": "^2.22.0",
     "web-vitals": "^2.1.4"
   },
   "scripts": {
diff --git a/frontend/src/App.css b/frontend/src/App.css
index 6566fca..4046cce 100644
--- a/frontend/src/App.css
+++ b/frontend/src/App.css
@@ -43,10 +43,31 @@
   justify-content: center;
 }
 
-.App-main {
+.Game-main {
   min-height: 100vh;
   display: flex;
-  flex-direction: column;
+  flex-direction: row;
+  gap: 5vmin;
+  align-items: center;
+  justify-content: center;
+  font-size: calc(10px + 2vmin);
+}
+
+.Game-controls {
+  height: 80vh;
+  width: 10vw;
+  background-color: var(--bg-secondary);
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  font-size: calc(10px + 2vmin);
+}
+
+.Game-reasons {
+  height: 80vh;
+  width: 10vw;
+  background-color: var(--bg-secondary);
+  display: flex;
   align-items: center;
   justify-content: center;
   font-size: calc(10px + 2vmin);
@@ -74,12 +95,12 @@
   text-overflow: clip;
 }
 .Grid-square .Fit-text {
-  font-size: calc(10px + 1vmin);
+  font-size: calc(10px + 0.8vmin);
   overflow: hidden;
   text-overflow: clip;
 }
 .Completed-group .Fit-text {
-  font-size: calc(10px + 2vmin);
+  font-size: calc(10px + 1.5vmin);
   font-style: bold;
   overflow: hidden;
   text-overflow: clip;
@@ -110,6 +131,13 @@
   display: flex;
   align-items: center;
   justify-content: center;
+  cursor: pointer;
+}
+
+.Group-reason {
+  white-space: normal;
+  word-wrap: break-word; /* Or word-break: break-word; */
+  overflow-wrap: break-word;
 }
 
 .Selected {
diff --git a/frontend/src/App.tsx b/frontend/src/App.tsx
index 4eb26bd..b3203bc 100644
--- a/frontend/src/App.tsx
+++ b/frontend/src/App.tsx
@@ -1,13 +1,27 @@
 import React, { useEffect, useState } from "react";
-import logo from "./kaistevenson.svg";
+import logo from "./kaistevenson_white.svg";
 import "./App.css";
 
 import { Grid } from "./Grid";
-import { getWords } from "./serverHelper";
+import { getCategory, getWords } from "./serverHelper";
 
 export type GameState = {
   words: { word: string; selected: boolean; used: boolean }[];
-  groups: { title: string; words: string[] }[];
+  groups: {
+    title: string;
+    reason: string;
+    words: string[];
+    flipped: boolean;
+  }[];
+};
+
+const loadingGameState: GameState = {
+  words: new Array(16).fill({
+    word: "Loading...",
+    selected: false,
+    used: false,
+  }),
+  groups: [],
 };
 
 const initializeGameState = async (): Promise<GameState> => ({
@@ -46,6 +60,12 @@ const Game = () => {
     candidateState.words[idx].selected = !candidateState.words[idx].selected;
     setGameState(candidateState);
   };
+  const flipGroupHandler = (idx: number) => {
+    const candidateState = { ...gameState! };
+    //FIXME don't mutate state
+    candidateState.groups[idx].flipped = !candidateState.groups[idx].flipped;
+    setGameState(candidateState);
+  };
   const submitSelectionHandler = () => {
     const candidateState = { ...gameState! };
 
@@ -65,26 +85,40 @@ const Game = () => {
       })
     );
 
-    //mock the server response for this selection
-    const response = "Four letter verbs";
-    const newGroup: GameState["groups"][number] = {
-      title: response,
+    const loadingGroup: GameState["groups"][number] = {
+      title: "LOADING",
       words: selectedWords,
+      reason: "LOADING",
+      flipped: false,
     };
-    candidateState.groups = [...candidateState.groups, newGroup];
 
-    setGameState(candidateState);
+    setGameState((prevState) => ({
+      ...candidateState!,
+      groups: [...prevState!.groups, loadingGroup],
+    }));
+
+    getCategory(selectedWords).then(({ categoryName, reason }) => {
+      setGameState((prevState) => {
+        const updatedGroups = prevState!.groups.map((group) =>
+          group === loadingGroup
+            ? { ...group, title: categoryName, reason }
+            : group
+        );
+        return { ...candidateState!, groups: updatedGroups };
+      });
+    });
   };
 
   //display logic
-  return gameState ? (
-    <Grid
-      selectWordHandler={selectWordHandler}
-      submitSelectionHandler={submitSelectionHandler}
-      gameState={gameState!}
-    />
-  ) : (
-    <h1>Loading...</h1>
+  return (
+    <div className="Game-main">
+      <Grid
+        selectWordHandler={selectWordHandler}
+        flipGroupHandler={flipGroupHandler}
+        submitSelectionHandler={submitSelectionHandler}
+        gameState={gameState ?? loadingGameState}
+      />
+    </div>
   );
 };
 
diff --git a/frontend/src/Grid.tsx b/frontend/src/Grid.tsx
index f6df3a8..8d822f3 100644
--- a/frontend/src/Grid.tsx
+++ b/frontend/src/Grid.tsx
@@ -1,5 +1,6 @@
 import React from "react";
 import { GameState } from "./App";
+import Typewriter from "typewriter-effect";
 
 const Tile = ({
   word,
@@ -23,20 +24,71 @@ const Tile = ({
 export const Grid = ({
   selectWordHandler,
   submitSelectionHandler,
+  flipGroupHandler,
   gameState,
 }: {
   selectWordHandler: (idx: number) => void;
+  flipGroupHandler: (idx: number) => void;
   submitSelectionHandler: () => void;
   gameState: GameState;
 }) => {
-  const groups = gameState.groups.map(({ title, words }) => (
-    <div className="Completed-group">
-      <pre>
-        <h1 className="Fit-text">{title.toUpperCase()}</h1>
-        <h2 className="Fit-text">{words.join(", ")}</h2>
-      </pre>
-    </div>
-  ));
+  const groups = gameState.groups.map(
+    ({ words, title, reason, flipped }, idx) => (
+      <button onClick={() => flipGroupHandler(idx)} className="Completed-group">
+        {
+          <pre>
+            {flipped ? (
+              <Typewriter
+                key={"reason-tw"}
+                options={{
+                  delay: 1,
+                  wrapperClassName: "Group-reason",
+                  cursor: "",
+                }}
+                onInit={(tw) => tw.typeString(reason).start()}
+                component={"p"}
+              ></Typewriter>
+            ) : (
+              <div>
+                {title !== "LOADING" ? (
+                  <Typewriter
+                    key={"header-tw"}
+                    options={{
+                      delay: 30,
+                      wrapperClassName: "Group-header",
+                      cursor: "",
+                    }}
+                    onInit={(tw) => tw.typeString(title).start()}
+                    component={"h1"}
+                  ></Typewriter>
+                ) : (
+                  <Typewriter
+                    key={"loading-tw"}
+                    options={{
+                      delay: 150,
+                      wrapperClassName: "Group-header",
+                      cursor: "",
+                    }}
+                    onInit={(tw) => tw.typeString("Loading...").start()}
+                    component={"h1"}
+                  ></Typewriter>
+                )}
+                <Typewriter
+                  options={{
+                    delay: 15,
+                    wrapperClassName: "Group-content",
+                    cursor: "",
+                  }}
+                  onInit={(tw) => tw.typeString(words.join(", ")).start()}
+                  component={"h2"}
+                ></Typewriter>
+              </div>
+            )}
+          </pre>
+        }
+      </button>
+    )
+  );
   const tiles = gameState.words.map((word, i) =>
     !word.used ? (
       <Tile
diff --git a/frontend/src/index.tsx b/frontend/src/index.tsx
index 079f7c6..e728e31 100644
--- a/frontend/src/index.tsx
+++ b/frontend/src/index.tsx
@@ -2,7 +2,6 @@ import React from "react";
 import ReactDOM from "react-dom/client";
 import "./index.css";
 import { App } from "./App";
-import reportWebVitals from "./reportWebVitals";
 
 const root = ReactDOM.createRoot(
   document.getElementById("root") as HTMLElement
@@ -12,8 +11,3 @@ root.render(
     <App />
   </React.StrictMode>
 );
-
-// If you want to start measuring performance in your app, pass a function
-// to log results (for example: reportWebVitals(console.log))
-// or send to an analytics endpoint. Learn more: https://bit.ly/CRA-vitals
-reportWebVitals();
diff --git a/frontend/src/kaistevenson_white.svg b/frontend/src/kaistevenson_white.svg
new file mode 100644
index 0000000..8f80726
--- /dev/null
+++ b/frontend/src/kaistevenson_white.svg
@@ -0,0 +1,35 @@
+<svg width="100%" height="100%" viewBox="0 0 2000 2000" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" xml:space="preserve" style="fill-rule:evenodd;clip-rule:evenodd;stroke-linejoin:round;">
+    <g id="Layer-2">
+        <g transform="matrix(-0.707107,0.707107,0.707107,0.707107,355.962,1644.04)">
+            <rect x="-1554.85" y="-644.038" width="1288.08" height="1288.08" style="fill:none;stroke:white;stroke-width:39px;"/>
+        </g>
+        <g transform="matrix(-0.573577,0.819152,0.819152,0.573577,692.108,1660.28)">
+            <rect x="-1232.62" y="-641.66" width="1030.3" height="1030.3" style="fill:none;stroke:white;stroke-width:39px;"/>
+        </g>
+        <g transform="matrix(-0.422618,0.906308,0.906308,0.422618,949.175,1580.94)">
+            <rect x="-960.341" y="-611.806" width="824.707" height="824.708" style="fill:none;stroke:white;stroke-width:39px;"/>
+        </g>
+        <g transform="matrix(-0.258818,0.965926,0.965926,0.258818,1120.74,1450.62)">
+            <rect x="-733.886" y="-563.131" width="659.748" height="659.748" style="fill:none;stroke:white;stroke-width:39px;"/>
+        </g>
+        <g transform="matrix(-0.0871564,0.996195,0.996195,0.0871564,1214.03,1305.67)">
+            <rect x="-549.711" y="-503.717" width="527.718" height="527.718" style="fill:none;stroke:white;stroke-width:39px;"/>
+        </g>
+        <g transform="matrix(0.0871565,0.996195,0.996195,-0.0871565,1244.67,1171.32)">
+            <rect x="-403.201" y="-440.018" width="422.412" height="422.413" style="fill:none;stroke:white;stroke-width:39px;"/>
+        </g>
+        <g transform="matrix(0.25882,0.965926,0.965926,-0.25882,1229.97,1061.62)">
+            <rect x="-287.396" y="-374.542" width="336.705" height="336.705" style="fill:none;stroke:white;stroke-width:39px;"/>
+        </g>
+        <g transform="matrix(0.42262,0.906307,0.906307,-0.42262,1189.72,983.401)">
+            <rect x="-199.795" y="-313.617" width="269.322" height="269.324" style="fill:none;stroke:white;stroke-width:39px;"/>
+        </g>
+        <g transform="matrix(0.573574,0.819154,0.819154,-0.573574,1138.16,935.578)">
+            <rect x="-134.261" y="-257.911" width="215.58" height="215.579" style="fill:none;stroke:white;stroke-width:39px;"/>
+        </g>
+        <g transform="matrix(0.707107,0.707107,0.707107,-0.707107,1086.23,913.769)">
+            <rect x="-86.231" y="-208.18" width="172.462" height="172.462" style="fill:none;stroke:white;stroke-width:39px;"/>
+        </g>
+    </g>
+</svg>
+
diff --git a/frontend/src/logo.svg b/frontend/src/logo.svg
deleted file mode 100644
index 9dfc1c0..0000000
--- a/frontend/src/logo.svg
+++ /dev/null
@@ -1 +0,0 @@
-<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 841.9 595.3"><g fill="#61DAFB"><path d="M666.3 296.5c0-32.5-40.7-63.3-103.1-82.4 14.4-63.6 8-114.2-20.2-130.4-6.5-3.8-14.1-5.6-22.4-5.6v22.3c4.6 0 8.3.9 11.4 2.6 13.6 7.8 19.5 37.5 14.9 75.7-1.1 9.4-2.9 19.3-5.1 29.4-19.6-4.8-41-8.5-63.5-10.9-13.5-18.5-27.5-35.3-41.6-50 32.6-30.3 63.2-46.9 84-46.9V78c-27.5 0-63.5 19.6-99.9 53.6-36.4-33.8-72.4-53.2-99.9-53.2v22.3c20.7 0 51.4 16.5 84 46.6-14 14.7-28 31.4-41.3 49.9-22.6 2.4-44 6.1-63.6 11-2.3-10-4-19.7-5.2-29-4.7-38.2 1.1-67.9 14.6-75.8 3-1.8 6.9-2.6 11.5-2.6V78.5c-8.4 0-16 1.8-22.6 5.6-28.1 16.2-34.4 66.7-19.9 130.1-62.2 19.2-102.7 49.9-102.7 82.3 0 32.5 40.7 63.3 103.1 82.4-14.4 63.6-8 114.2 20.2 130.4 6.5 3.8 14.1 5.6 22.5 5.6 27.5 0 63.5-19.6 99.9-53.6 36.4 33.8 72.4 53.2 99.9 53.2 8.4 0 16-1.8 22.6-5.6 28.1-16.2 34.4-66.7 19.9-130.1 62-19.1 102.5-49.9 102.5-82.3zm-130.2-66.7c-3.7 12.9-8.3 26.2-13.5 39.5-4.1-8-8.4-16-13.1-24-4.6-8-9.5-15.8-14.4-23.4 14.2 2.1 27.9 4.7 41 7.9zm-45.8 106.5c-7.8 13.5-15.8 26.3-24.1 38.2-14.9 1.3-30 2-45.2 2-15.1 0-30.2-.7-45-1.9-8.3-11.9-16.4-24.6-24.2-38-7.6-13.1-14.5-26.4-20.8-39.8 6.2-13.4 13.2-26.8 20.7-39.9 7.8-13.5 15.8-26.3 24.1-38.2 14.9-1.3 30-2 45.2-2 15.1 0 30.2.7 45 1.9 8.3 11.9 16.4 24.6 24.2 38 7.6 13.1 14.5 26.4 20.8 39.8-6.3 13.4-13.2 26.8-20.7 39.9zm32.3-13c5.4 13.4 10 26.8 13.8 39.8-13.1 3.2-26.9 5.9-41.2 8 4.9-7.7 9.8-15.6 14.4-23.7 4.6-8 8.9-16.1 13-24.1zM421.2 430c-9.3-9.6-18.6-20.3-27.8-32 9 .4 18.2.7 27.5.7 9.4 0 18.7-.2 27.8-.7-9 11.7-18.3 22.4-27.5 32zm-74.4-58.9c-14.2-2.1-27.9-4.7-41-7.9 3.7-12.9 8.3-26.2 13.5-39.5 4.1 8 8.4 16 13.1 24 4.7 8 9.5 15.8 14.4 23.4zM420.7 163c9.3 9.6 18.6 20.3 27.8 32-9-.4-18.2-.7-27.5-.7-9.4 0-18.7.2-27.8.7 9-11.7 18.3-22.4 27.5-32zm-74 58.9c-4.9 7.7-9.8 15.6-14.4 23.7-4.6 8-8.9 16-13 24-5.4-13.4-10-26.8-13.8-39.8 13.1-3.1 26.9-5.8 41.2-7.9zm-90.5 125.2c-35.4-15.1-58.3-34.9-58.3-50.6 0-15.7 22.9-35.6 58.3-50.6 8.6-3.7 18-7 27.7-10.1 5.7 19.6 13.2 40 22.5 60.9-9.2 20.8-16.6 41.1-22.2 60.6-9.9-3.1-19.3-6.5-28-10.2zM310 490c-13.6-7.8-19.5-37.5-14.9-75.7 1.1-9.4 2.9-19.3 5.1-29.4 19.6 4.8 41 8.5 63.5 10.9 13.5 18.5 27.5 35.3 41.6 50-32.6 30.3-63.2 46.9-84 46.9-4.5-.1-8.3-1-11.3-2.7zm237.2-76.2c4.7 38.2-1.1 67.9-14.6 75.8-3 1.8-6.9 2.6-11.5 2.6-20.7 0-51.4-16.5-84-46.6 14-14.7 28-31.4 41.3-49.9 22.6-2.4 44-6.1 63.6-11 2.3 10.1 4.1 19.8 5.2 29.1zm38.5-66.7c-8.6 3.7-18 7-27.7 10.1-5.7-19.6-13.2-40-22.5-60.9 9.2-20.8 16.6-41.1 22.2-60.6 9.9 3.1 19.3 6.5 28.1 10.2 35.4 15.1 58.3 34.9 58.3 50.6-.1 15.7-23 35.6-58.4 50.6zM320.8 78.4z"/><circle cx="420.9" cy="296.5" r="45.7"/><path d="M520.5 78.1z"/></g></svg>
\ No newline at end of file
diff --git a/frontend/src/reportWebVitals.ts b/frontend/src/reportWebVitals.ts
deleted file mode 100644
index 49a2a16..0000000
--- a/frontend/src/reportWebVitals.ts
+++ /dev/null
@@ -1,15 +0,0 @@
-import { ReportHandler } from 'web-vitals';
-
-const reportWebVitals = (onPerfEntry?: ReportHandler) => {
-  if (onPerfEntry && onPerfEntry instanceof Function) {
-    import('web-vitals').then(({ getCLS, getFID, getFCP, getLCP, getTTFB }) => {
-      getCLS(onPerfEntry);
-      getFID(onPerfEntry);
-      getFCP(onPerfEntry);
-      getLCP(onPerfEntry);
-      getTTFB(onPerfEntry);
-    });
-  }
-};
-
-export default reportWebVitals;
diff --git a/frontend/src/serverHelper.ts b/frontend/src/serverHelper.ts
index 8565fd6..3181093 100644
--- a/frontend/src/serverHelper.ts
+++ b/frontend/src/serverHelper.ts
@@ -1,12 +1,24 @@
 import axios from "axios";
 
-const SERVER_URL = "http://localhost:4000";
+const SERVER_URL = "";
 
 export const getWords = async (): Promise<[...(string[] & { length: 9 })]> => {
-  const words = (await axios.get(`${SERVER_URL}/random-words`))
+  const words = (await axios.get(`${SERVER_URL}/api/random-words`))
     .data as string[];
   if (words.length !== 16) {
     throw new Error(`Got invalid words ${words} from server`);
   }
   return words;
 };
+
+export const getCategory = async (
+  words: string[]
+): Promise<{ categoryName: string; reason: string }> => {
+  const response = (
+    await axios.post(`${SERVER_URL}/api/group-words`, {
+      words,
+    })
+  ).data;
+
+  return response;
+};
diff --git a/package.json b/package.json
index 648fc65..7340fe7 100644
--- a/package.json
+++ b/package.json
@@ -3,7 +3,7 @@
   "version": "0.0.0",
   "scripts": {
     "build": "pnpm -F disconnected-frontend build && pnpm -F disconnected-backend build",
-    "clean": "rm -rf backend/node_modules && rm -rf frontend/node_modules"
+    "clean": "rm -rf api/node_modules && rm -rf frontend/node_modules"
   },
   "devDependencies": {
     "tsup": "^8.5.0"
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 3d63ed7..97c5aa3 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -16,14 +16,23 @@ importers:
         specifier: ^8.5.0
         version: 8.5.0(jiti@1.21.7)(postcss@8.5.4)(typescript@5.8.3)(yaml@2.8.0)
 
-  backend:
+  api:
     dependencies:
       cors:
         specifier: ^2.8.5
         version: 2.8.5
+      dotenv:
+        specifier: ^16.5.0
+        version: 16.5.0
       express:
         specifier: ^5.1.0
         version: 5.1.0
+      express-rate-limit:
+        specifier: ^7.5.0
+        version: 7.5.0(express@5.1.0)
+      openai:
+        specifier: ^5.3.0
+        version: 5.3.0(ws@8.18.2)
     devDependencies:
       '@types/cors':
         specifier: ^2.8.19
@@ -69,10 +78,13 @@ importers:
         version: 19.1.0(react@19.1.0)
       react-scripts:
         specifier: 5.0.1
-        version: 5.0.1(@babel/plugin-syntax-flow@7.27.1(@babel/core@7.27.4))(@babel/plugin-transform-react-jsx@7.27.1(@babel/core@7.27.4))(@types/babel__core@7.20.5)(esbuild@0.25.5)(eslint@8.57.1)(react@19.1.0)(type-fest@0.21.3)(typescript@4.9.5)
+        version: 5.0.1(@babel/plugin-syntax-flow@7.27.1(@babel/core@7.27.4))(@babel/plugin-transform-react-jsx@7.27.1(@babel/core@7.27.4))(@types/babel__core@7.20.5)(esbuild@0.25.5)(eslint@8.57.1)(react@19.1.0)(ts-node@10.9.1(@types/node@16.18.126)(typescript@4.9.5))(type-fest@0.21.3)(typescript@4.9.5)
       typescript:
         specifier: ^4.9.5
         version: 4.9.5
+      typewriter-effect:
+        specifier: ^2.22.0
+        version: 2.22.0(react-dom@19.1.0(react@19.1.0))(react@19.1.0)
       web-vitals:
         specifier: ^2.1.4
         version: 2.1.4
@@ -796,6 +808,10 @@ packages:
   '@bcoe/v8-coverage@0.2.3':
     resolution: {integrity: sha512-0hYQ8SB4Db5zvZB4axdMHGwEaQjkZzFjQiN9LVYvIFB2nSUHW9tYpxWriPrWDASIxiaXax83REcLxuSdnGPZtw==}
 
+  '@cspotcode/source-map-support@0.8.1':
+    resolution: {integrity: sha512-IchNf6dN4tHoMFIn/7OE8LWZ19Y6q/67Bmf6vnGREv8RSbBVb9LPJxEcnwrcwX6ixSvaiGoomAUvu4YSxXrVgw==}
+    engines: {node: '>=12'}
+
   '@csstools/normalize.css@12.1.1':
     resolution: {integrity: sha512-YAYeJ+Xqh7fUou1d1j9XHl44BmsuThiTr4iNrgCQ3J27IbhXsxXDGZ1cXv8Qvs99d4rBbLiSKy3+WZiet32PcQ==}
 
@@ -1173,6 +1189,9 @@ packages:
   '@jridgewell/trace-mapping@0.3.25':
     resolution: {integrity: sha512-vNk6aEwybGtawWmy/PzwnGDOjCkLWSD2wqvjGGAgOAwCGWySYXfYoxt00IJkTF+8Lb57DwOb3Aa0o9CApepiYQ==}
 
+  '@jridgewell/trace-mapping@0.3.9':
+    resolution: {integrity: sha512-3Belt6tdc8bPgAtbcmdtNJlirVoTmEb5e2gC94PnkwEW9jI6CAHUeoG85tjWP5WquqfavoMtMwiG4P926ZKKuQ==}
+
   '@leichtgewicht/ip-codec@2.0.5':
     resolution: {integrity: sha512-Vo+PSpZG2/fmgmiNzYK9qWRh8h/CHrwD0mo1h1DzL4yzHNSfWYujGTYsWGreD000gcgmZ7K4Ys6Tx9TxtsKdDw==}
 
@@ -1460,6 +1479,18 @@ packages:
     resolution: {integrity: sha512-L7z9BgrNEcYyUYtF+HaEfiS5ebkh9jXqbszz7pC0hRBPaatV0XjSD3+eHrpqFemQfgwiFF0QPIarnIihIDn7OA==}
     engines: {node: '>=10.13.0'}
 
+  '@tsconfig/node10@1.0.11':
+    resolution: {integrity: sha512-DcRjDCujK/kCk/cUe8Xz8ZSpm8mS3mNNpta+jGCA6USEDfktlNvm1+IuZ9eTcDbNk41BHwpHHeW+N1lKCz4zOw==}
+
+  '@tsconfig/node12@1.0.11':
+    resolution: {integrity: sha512-cqefuRsh12pWyGsIoBKJA9luFu3mRxCA+ORZvA4ktLSzIuCUtWVxGIuXigEwO5/ywWFMZ2QEGKWvkZG1zDMTag==}
+
+  '@tsconfig/node14@1.0.3':
+    resolution: {integrity: sha512-ysT8mhdixWK6Hw3i1V2AeRqZ5WfXg1G43mqoYlM2nc6388Fq5jcXyr5mRsqViLx/GJYdoL0bfXD8nmF+Zn/Iow==}
+
+  '@tsconfig/node16@1.0.4':
+    resolution: {integrity: sha512-vxhUy4J8lyeyinH7Azl1pdd43GJhZH/tP2weN8TntQblOY+A0XbT8DJk1/oCPuOOyg/Ja757rG0CgHcWC8OfMA==}
+
   '@types/aria-query@5.0.4':
     resolution: {integrity: sha512-rfT93uj5s0PRL7EzccGMs3brplhcrghnDoV26NqKhCAS1hVo+WdNsPvE/yb6ilfr5hi2MEk6d5EWJTKdxg8jVw==}
 
@@ -1760,6 +1791,10 @@ packages:
     resolution: {integrity: sha512-OPdCF6GsMIP+Az+aWfAAOEt2/+iVDKE7oy6lJ098aoe59oAmK76qV6Gw60SbZ8jHuG2wH058GF4pLFbYamYrVA==}
     engines: {node: '>=0.4.0'}
 
+  acorn-walk@8.3.4:
+    resolution: {integrity: sha512-ueEepnujpqee2o5aIYnvHU6C0A42MNdsIDeqy5BydrkuC5R1ZuUFnm27EeFJGoEHJQgn3uleRvmTXaJgfXbt4g==}
+    engines: {node: '>=0.4.0'}
+
   acorn@7.4.1:
     resolution: {integrity: sha512-nQyp0o1/mNdbTO1PO6kHkwSrmgZ0MT/jCCpNiwbUjGoRN4dlBhqJtoQuCnEOKzgTVwg0ZWiCoQy6SxMebQVh8A==}
     engines: {node: '>=0.4.0'}
@@ -1851,6 +1886,9 @@ packages:
     resolution: {integrity: sha512-KMReFUr0B4t+D+OBkjR3KYqvocp2XaSzO55UcB6mgQMd3KbcE+mWTyvVV7D/zsdEbNnV6acZUutkiHQXvTr1Rw==}
     engines: {node: '>= 8'}
 
+  arg@4.1.3:
+    resolution: {integrity: sha512-58S9QDqG0Xx27YwPSt9fJxivjYl432YCwfDMfZ+71RAqUrZef7LrKQZ3LHLOwCS4FLNBplP533Zx895SeOCHvA==}
+
   arg@5.0.2:
     resolution: {integrity: sha512-PYjyFOLKQ9y57JvQ6QLo8dAgNqswh8M1RMJYdQduT6xbWSgK36P/Z/v+p888pM69jMMfS8Xd8F6I1kQ/I9HUGg==}
 
@@ -2314,6 +2352,9 @@ packages:
     resolution: {integrity: sha512-AdmX6xUzdNASswsFtmwSt7Vj8po9IuqXm0UXz7QKPuEUmPB4XyjGfaAr2PSuELMwkRMVH1EpIkX5bTZGRB3eCA==}
     engines: {node: '>=10'}
 
+  create-require@1.1.1:
+    resolution: {integrity: sha512-dcKFX3jn0MpIaXjisoRvexIJVEKzaq7z2rZKxf+MSr9TkdmHmsU4m2lcLojrj/FHl8mk5VxMmYA+ftRkP/3oKQ==}
+
   cross-spawn@7.0.6:
     resolution: {integrity: sha512-uV2QOWP2nWzsy2aMp8aRibhi9dlzF5Hgh5SHaB9OiTGEyDTiJJyx0uy51QXdyWbtAHNua4XJzUKca3OzKUd3vA==}
     engines: {node: '>= 8'}
@@ -2563,6 +2604,10 @@ packages:
     resolution: {integrity: sha512-k1gCAXAsNgLwEL+Y8Wvl+M6oEFj5bgazfZULpS5CneoPPXRaCCW7dm+q21Ky2VEE5X+VeRDBVg1Pcvvsr4TtNQ==}
     engines: {node: ^10.13.0 || ^12.13.0 || ^14.15.0 || >=15.0.0}
 
+  diff@4.0.2:
+    resolution: {integrity: sha512-58lmxKSA4BNyLz+HHMUzlOEpg09FV+ev6ZMe3vJihgdxzgcwZ8VoEEPmALCZG9LmqfVoNMMKpttIYTVG6uDY7A==}
+    engines: {node: '>=0.3.1'}
+
   dir-glob@3.0.1:
     resolution: {integrity: sha512-WkrWp9GR4KXfKGYzOLmTuGVi1UWFfws377n9cc55/tb6DuqyF6pcQ5AbiHEshaDpY9v6oaSr2XCDidGmMwdzIA==}
     engines: {node: '>=8'}
@@ -2628,6 +2673,10 @@ packages:
     resolution: {integrity: sha512-rlBi9d8jpv9Sf1klPjNfFAuWDjKLwTIJJ/VxtoTwIR6hnZxcEOQCZg2oIL3MWBYw5GpUDKOEnND7LXTbIpQ03Q==}
     engines: {node: '>=10'}
 
+  dotenv@16.5.0:
+    resolution: {integrity: sha512-m/C+AwOAr9/W1UOIZUo232ejMNnJAJtYQjUbHoNTBNTJSvqzzDh7vnrei3o3r3m9blf6ZoDkvcw0VmozNRFJxg==}
+    engines: {node: '>=12'}
+
   dunder-proto@1.0.1:
     resolution: {integrity: sha512-KIN/nDJBQRcXw0MLVhZE9iQHmG68qAVIBg9CqmUYjmQIhgij9U5MFvrqkUL5FbtyyzZuOeOt0zdeRe4UY7ct+A==}
     engines: {node: '>= 0.4'}
@@ -2938,6 +2987,12 @@ packages:
     resolution: {integrity: sha512-E1q5hSUG2AmYQwQJ041nvgpkODHQvB+RKlB4IYdru6uJsyFTRyZAP463M+1lINorwbqAmUggi6+WwkD8lCS/Dw==}
     engines: {node: ^10.13.0 || ^12.13.0 || ^14.15.0 || >=15.0.0}
 
+  express-rate-limit@7.5.0:
+    resolution: {integrity: sha512-eB5zbQh5h+VenMPM3fh+nw1YExi5nMr6HUCR62ELSP11huvxm/Uir1H1QEyTkk5QX6A58pX6NmaTMceKZ0Eodg==}
+    engines: {node: '>= 16'}
+    peerDependencies:
+      express: ^4.11 || 5 || ^5.0.0-beta.1
+
   express@4.21.2:
     resolution: {integrity: sha512-28HqgMZAmih1Czt9ny7qr6ek2qddF4FclbMzwhCREB6OFfH+rXAnuNCwo1/wFvrtbgsQDb4kSbX9de9lFbrXnA==}
     engines: {node: '>= 0.10.0'}
@@ -3966,6 +4021,9 @@ packages:
     resolution: {integrity: sha512-hXdUTZYIVOt1Ex//jAQi+wTZZpUpwBj/0QsOzqegb3rGMMeJiSEu5xLHnYfBrRV4RH2+OCSOO95Is/7x1WJ4bw==}
     engines: {node: '>=10'}
 
+  make-error@1.3.6:
+    resolution: {integrity: sha512-s8UhlNe7vPKomQhC1qFelMokr/Sc3AgNbso3n74mVPA5LTZwkB9NlXf4XPamLxJE8h0gh73rM94xvwRT2CVInw==}
+
   makeerror@1.0.12:
     resolution: {integrity: sha512-JmqCvUhmt43madlpFzG4BQzG2Z3m6tvQDNKdClZnO3VbIudJYmxsT0FNJMeiB2+JTSlTQTSbU8QdesVmwJcmLg==}
 
@@ -4215,6 +4273,18 @@ packages:
     resolution: {integrity: sha512-7x81NCL719oNbsq/3mh+hVrAWmFuEYUqrq/Iw3kUzH8ReypT9QQ0BLoJS7/G9k6N81XjW4qHWtjWwe/9eLy1EQ==}
     engines: {node: '>=12'}
 
+  openai@5.3.0:
+    resolution: {integrity: sha512-VIKmoF7y4oJCDOwP/oHXGzM69+x0dpGFmN9QmYO+uPbLFOmmnwO+x1GbsgUtI+6oraxomGZ566Y421oYVu191w==}
+    hasBin: true
+    peerDependencies:
+      ws: ^8.18.0
+      zod: ^3.23.8
+    peerDependenciesMeta:
+      ws:
+        optional: true
+      zod:
+        optional: true
+
   optionator@0.8.3:
     resolution: {integrity: sha512-+IW9pACdk3XWmmTXG8m3upGUJst5XRGzxMRjXzAuJ1XnIFNvfhjjIuYkDvysnPQ7qzqVzLt78BCruntqRhWQbA==}
     engines: {node: '>= 0.8.0'}
@@ -5583,6 +5653,20 @@ packages:
   ts-interface-checker@0.1.13:
     resolution: {integrity: sha512-Y/arvbn+rrz3JCKl9C4kVNfTfSm2/mEp5FSz5EsZSANGPSlQrpRI5M4PKF+mJnE52jOO90PnPSc3Ur3bTQw0gA==}
 
+  ts-node@10.9.1:
+    resolution: {integrity: sha512-NtVysVPkxxrwFGUUxGYhfux8k78pQB3JqYBXlLRZgdGUqTO5wU/UyHop5p70iEbGhB7q5KmiZiU0Y3KlJrScEw==}
+    hasBin: true
+    peerDependencies:
+      '@swc/core': '>=1.2.50'
+      '@swc/wasm': '>=1.2.50'
+      '@types/node': '*'
+      typescript: '>=2.7'
+    peerDependenciesMeta:
+      '@swc/core':
+        optional: true
+      '@swc/wasm':
+        optional: true
+
   tsconfig-paths@3.15.0:
     resolution: {integrity: sha512-2Ac2RgzDe/cn48GvOe3M+o82pEFewD3UPbyoUHHdKasHwJKjds4fLXWf/Ux5kATBKN20oaFGu+jbElp1pos0mg==}
 
@@ -5678,6 +5762,12 @@ packages:
     engines: {node: '>=14.17'}
     hasBin: true
 
+  typewriter-effect@2.22.0:
+    resolution: {integrity: sha512-01HCRYY462wT8Fxps/epwGCioZd/GMXY0aLKhFKrfJ5Xhgf54/SiDx7Oq7PoES5kGqOEAdW8FS8HYVM2WSvfhQ==}
+    peerDependencies:
+      react: '>=17.0.0'
+      react-dom: '>=17.0.0'
+
   ufo@1.6.1:
     resolution: {integrity: sha512-9a4/uxlTWJ4+a5i0ooc1rU7C7YOw3wT+UGqdeNNHWnOF9qcMBgLRS+4IYUqbczewFx4mLEig6gawh7X6mFlEkA==}
 
@@ -5756,6 +5846,9 @@ packages:
     resolution: {integrity: sha512-+NYs2QeMWy+GWFOEm9xnn6HCDp0l7QBD7ml8zLUmJ+93Q5NF0NocErnwkTkXVFNiX3/fpC6afS8Dhb/gz7R7eg==}
     hasBin: true
 
+  v8-compile-cache-lib@3.0.1:
+    resolution: {integrity: sha512-wa7YjyUGfNZngI/vtK0UHAN+lgDCxBPCylVXGp0zu59Fz5aiGtNXaq3DhIov063MorB+VfufLh3JlF2KdTK3xg==}
+
   v8-to-istanbul@8.1.1:
     resolution: {integrity: sha512-FGtKtv3xIpR6BYhvgH8MI/y78oT7d8Au3ww4QIxymrCtZEh5b8gCw2siywE+puhEmuWKDtmfrvF5UlB298ut3w==}
     engines: {node: '>=10.12.0'}
@@ -6020,6 +6113,10 @@ packages:
     resolution: {integrity: sha512-D1mvvtDG0L5ft/jGWkLpG1+m0eQxOfaBvTNELraWj22wSVUMWxZUvYgJYcKh6jGGIkJFhH4IZPQhR4TKpc8mBw==}
     engines: {node: '>=10'}
 
+  yn@3.1.1:
+    resolution: {integrity: sha512-Ux4ygGWsu2c7isFWe8Yu1YluJmqVhxqK2cLXNQA5AcC3QfbGNpM7fu0Y8b/z16pXLnFxZYvWhd3fhBY9DLmC6Q==}
+    engines: {node: '>=6'}
+
   yocto-queue@0.1.0:
     resolution: {integrity: sha512-rVksvsnNCdJ/ohGc6xgPwyN8eheCxsiLM8mxuE/t/mOVqJewPuO1miLpTHQiRgTKCLexL4MeAFVagts7HmNZ2Q==}
     engines: {node: '>=10'}
@@ -6921,6 +7018,11 @@ snapshots:
 
   '@bcoe/v8-coverage@0.2.3': {}
 
+  '@cspotcode/source-map-support@0.8.1':
+    dependencies:
+      '@jridgewell/trace-mapping': 0.3.9
+    optional: true
+
   '@csstools/normalize.css@12.1.1': {}
 
   '@csstools/postcss-cascade-layers@1.1.1(postcss@8.5.4)':
@@ -7148,7 +7250,7 @@ snapshots:
       jest-util: 28.1.3
       slash: 3.0.0
 
-  '@jest/core@27.5.1':
+  '@jest/core@27.5.1(ts-node@10.9.1(@types/node@16.18.126)(typescript@4.9.5))':
     dependencies:
       '@jest/console': 27.5.1
       '@jest/reporters': 27.5.1
@@ -7162,7 +7264,7 @@ snapshots:
       exit: 0.1.2
       graceful-fs: 4.2.11
       jest-changed-files: 27.5.1
-      jest-config: 27.5.1
+      jest-config: 27.5.1(ts-node@10.9.1(@types/node@16.18.126)(typescript@4.9.5))
       jest-haste-map: 27.5.1
       jest-message-util: 27.5.1
       jest-regex-util: 27.5.1
@@ -7329,6 +7431,12 @@ snapshots:
       '@jridgewell/resolve-uri': 3.1.2
       '@jridgewell/sourcemap-codec': 1.5.0
 
+  '@jridgewell/trace-mapping@0.3.9':
+    dependencies:
+      '@jridgewell/resolve-uri': 3.1.2
+      '@jridgewell/sourcemap-codec': 1.5.0
+    optional: true
+
   '@leichtgewicht/ip-codec@2.0.5': {}
 
   '@nicolo-ribaudo/eslint-scope-5-internals@5.1.1-v1':
@@ -7587,6 +7695,18 @@ snapshots:
 
   '@trysound/sax@0.2.0': {}
 
+  '@tsconfig/node10@1.0.11':
+    optional: true
+
+  '@tsconfig/node12@1.0.11':
+    optional: true
+
+  '@tsconfig/node14@1.0.3':
+    optional: true
+
+  '@tsconfig/node16@1.0.4':
+    optional: true
+
   '@types/aria-query@5.0.4': {}
 
   '@types/babel__core@7.20.5':
@@ -7750,7 +7870,7 @@ snapshots:
 
   '@types/serve-index@1.9.4':
     dependencies:
-      '@types/express': 4.17.23
+      '@types/express': 5.0.3
 
   '@types/serve-static@1.15.8':
     dependencies:
@@ -7977,6 +8097,11 @@ snapshots:
 
   acorn-walk@7.2.0: {}
 
+  acorn-walk@8.3.4:
+    dependencies:
+      acorn: 8.15.0
+    optional: true
+
   acorn@7.4.1: {}
 
   acorn@8.15.0: {}
@@ -8052,6 +8177,9 @@ snapshots:
       normalize-path: 3.0.0
       picomatch: 2.3.1
 
+  arg@4.1.3:
+    optional: true
+
   arg@5.0.2: {}
 
   argparse@1.0.10:
@@ -8618,6 +8746,9 @@ snapshots:
       path-type: 4.0.0
       yaml: 1.10.2
 
+  create-require@1.1.1:
+    optional: true
+
   cross-spawn@7.0.6:
     dependencies:
       path-key: 3.1.1
@@ -8853,6 +8984,9 @@ snapshots:
 
   diff-sequences@27.5.1: {}
 
+  diff@4.0.2:
+    optional: true
+
   dir-glob@3.0.1:
     dependencies:
       path-type: 4.0.0
@@ -8922,6 +9056,8 @@ snapshots:
 
   dotenv@10.0.0: {}
 
+  dotenv@16.5.0: {}
+
   dunder-proto@1.0.1:
     dependencies:
       call-bind-apply-helpers: 1.0.2
@@ -9129,7 +9265,7 @@ snapshots:
     optionalDependencies:
       source-map: 0.6.1
 
-  eslint-config-react-app@7.0.1(@babel/plugin-syntax-flow@7.27.1(@babel/core@7.27.4))(@babel/plugin-transform-react-jsx@7.27.1(@babel/core@7.27.4))(eslint@8.57.1)(jest@27.5.1)(typescript@4.9.5):
+  eslint-config-react-app@7.0.1(@babel/plugin-syntax-flow@7.27.1(@babel/core@7.27.4))(@babel/plugin-transform-react-jsx@7.27.1(@babel/core@7.27.4))(eslint@8.57.1)(jest@27.5.1(ts-node@10.9.1(@types/node@16.18.126)(typescript@4.9.5)))(typescript@4.9.5):
     dependencies:
       '@babel/core': 7.27.4
       '@babel/eslint-parser': 7.27.5(@babel/core@7.27.4)(eslint@8.57.1)
@@ -9141,7 +9277,7 @@ snapshots:
       eslint: 8.57.1
       eslint-plugin-flowtype: 8.0.3(@babel/plugin-syntax-flow@7.27.1(@babel/core@7.27.4))(@babel/plugin-transform-react-jsx@7.27.1(@babel/core@7.27.4))(eslint@8.57.1)
       eslint-plugin-import: 2.31.0(@typescript-eslint/parser@5.62.0(eslint@8.57.1)(typescript@4.9.5))(eslint@8.57.1)
-      eslint-plugin-jest: 25.7.0(@typescript-eslint/eslint-plugin@5.62.0(@typescript-eslint/parser@5.62.0(eslint@8.57.1)(typescript@4.9.5))(eslint@8.57.1)(typescript@4.9.5))(eslint@8.57.1)(jest@27.5.1)(typescript@4.9.5)
+      eslint-plugin-jest: 25.7.0(@typescript-eslint/eslint-plugin@5.62.0(@typescript-eslint/parser@5.62.0(eslint@8.57.1)(typescript@4.9.5))(eslint@8.57.1)(typescript@4.9.5))(eslint@8.57.1)(jest@27.5.1(ts-node@10.9.1(@types/node@16.18.126)(typescript@4.9.5)))(typescript@4.9.5)
       eslint-plugin-jsx-a11y: 6.10.2(eslint@8.57.1)
       eslint-plugin-react: 7.37.5(eslint@8.57.1)
       eslint-plugin-react-hooks: 4.6.2(eslint@8.57.1)
@@ -9211,13 +9347,13 @@ snapshots:
       - eslint-import-resolver-webpack
       - supports-color
 
-  eslint-plugin-jest@25.7.0(@typescript-eslint/eslint-plugin@5.62.0(@typescript-eslint/parser@5.62.0(eslint@8.57.1)(typescript@4.9.5))(eslint@8.57.1)(typescript@4.9.5))(eslint@8.57.1)(jest@27.5.1)(typescript@4.9.5):
+  eslint-plugin-jest@25.7.0(@typescript-eslint/eslint-plugin@5.62.0(@typescript-eslint/parser@5.62.0(eslint@8.57.1)(typescript@4.9.5))(eslint@8.57.1)(typescript@4.9.5))(eslint@8.57.1)(jest@27.5.1(ts-node@10.9.1(@types/node@16.18.126)(typescript@4.9.5)))(typescript@4.9.5):
     dependencies:
       '@typescript-eslint/experimental-utils': 5.62.0(eslint@8.57.1)(typescript@4.9.5)
       eslint: 8.57.1
     optionalDependencies:
       '@typescript-eslint/eslint-plugin': 5.62.0(@typescript-eslint/parser@5.62.0(eslint@8.57.1)(typescript@4.9.5))(eslint@8.57.1)(typescript@4.9.5)
-      jest: 27.5.1
+      jest: 27.5.1(ts-node@10.9.1(@types/node@16.18.126)(typescript@4.9.5))
     transitivePeerDependencies:
       - supports-color
       - typescript
@@ -9395,6 +9531,10 @@ snapshots:
       jest-matcher-utils: 27.5.1
       jest-message-util: 27.5.1
 
+  express-rate-limit@7.5.0(express@5.1.0):
+    dependencies:
+      express: 5.1.0
+
   express@4.21.2:
     dependencies:
       accepts: 1.3.8
@@ -10180,16 +10320,16 @@ snapshots:
     transitivePeerDependencies:
       - supports-color
 
-  jest-cli@27.5.1:
+  jest-cli@27.5.1(ts-node@10.9.1(@types/node@16.18.126)(typescript@4.9.5)):
     dependencies:
-      '@jest/core': 27.5.1
+      '@jest/core': 27.5.1(ts-node@10.9.1(@types/node@16.18.126)(typescript@4.9.5))
       '@jest/test-result': 27.5.1
       '@jest/types': 27.5.1
       chalk: 4.1.2
       exit: 0.1.2
       graceful-fs: 4.2.11
       import-local: 3.2.0
-      jest-config: 27.5.1
+      jest-config: 27.5.1(ts-node@10.9.1(@types/node@16.18.126)(typescript@4.9.5))
       jest-util: 27.5.1
       jest-validate: 27.5.1
       prompts: 2.4.2
@@ -10201,7 +10341,7 @@ snapshots:
       - ts-node
       - utf-8-validate
 
-  jest-config@27.5.1:
+  jest-config@27.5.1(ts-node@10.9.1(@types/node@16.18.126)(typescript@4.9.5)):
     dependencies:
       '@babel/core': 7.27.4
       '@jest/test-sequencer': 27.5.1
@@ -10227,6 +10367,8 @@ snapshots:
       pretty-format: 27.5.1
       slash: 3.0.0
       strip-json-comments: 3.1.1
+    optionalDependencies:
+      ts-node: 10.9.1(@types/node@16.18.126)(typescript@4.9.5)
     transitivePeerDependencies:
       - bufferutil
       - canvas
@@ -10502,11 +10644,11 @@ snapshots:
       leven: 3.1.0
       pretty-format: 27.5.1
 
-  jest-watch-typeahead@1.1.0(jest@27.5.1):
+  jest-watch-typeahead@1.1.0(jest@27.5.1(ts-node@10.9.1(@types/node@16.18.126)(typescript@4.9.5))):
     dependencies:
       ansi-escapes: 4.3.2
       chalk: 4.1.2
-      jest: 27.5.1
+      jest: 27.5.1(ts-node@10.9.1(@types/node@16.18.126)(typescript@4.9.5))
       jest-regex-util: 28.0.2
       jest-watcher: 28.1.3
       slash: 4.0.0
@@ -10552,11 +10694,11 @@ snapshots:
       merge-stream: 2.0.0
       supports-color: 8.1.1
 
-  jest@27.5.1:
+  jest@27.5.1(ts-node@10.9.1(@types/node@16.18.126)(typescript@4.9.5)):
     dependencies:
-      '@jest/core': 27.5.1
+      '@jest/core': 27.5.1(ts-node@10.9.1(@types/node@16.18.126)(typescript@4.9.5))
       import-local: 3.2.0
-      jest-cli: 27.5.1
+      jest-cli: 27.5.1(ts-node@10.9.1(@types/node@16.18.126)(typescript@4.9.5))
     transitivePeerDependencies:
       - bufferutil
       - canvas
@@ -10764,6 +10906,9 @@ snapshots:
     dependencies:
       semver: 7.7.2
 
+  make-error@1.3.6:
+    optional: true
+
   makeerror@1.0.12:
     dependencies:
       tmpl: 1.0.5
@@ -10986,6 +11131,10 @@ snapshots:
       is-docker: 2.2.1
       is-wsl: 2.2.0
 
+  openai@5.3.0(ws@8.18.2):
+    optionalDependencies:
+      ws: 8.18.2
+
   optionator@0.8.3:
     dependencies:
       deep-is: 0.1.4
@@ -11263,12 +11412,13 @@ snapshots:
       postcss: 8.5.4
       postcss-value-parser: 4.2.0
 
-  postcss-load-config@4.0.2(postcss@8.5.4):
+  postcss-load-config@4.0.2(postcss@8.5.4)(ts-node@10.9.1(@types/node@16.18.126)(typescript@4.9.5)):
     dependencies:
       lilconfig: 3.1.3
       yaml: 2.8.0
     optionalDependencies:
       postcss: 8.5.4
+      ts-node: 10.9.1(@types/node@16.18.126)(typescript@4.9.5)
 
   postcss-load-config@6.0.1(jiti@1.21.7)(postcss@8.5.4)(yaml@2.8.0):
     dependencies:
@@ -11704,7 +11854,7 @@ snapshots:
 
   react-refresh@0.11.0: {}
 
-  react-scripts@5.0.1(@babel/plugin-syntax-flow@7.27.1(@babel/core@7.27.4))(@babel/plugin-transform-react-jsx@7.27.1(@babel/core@7.27.4))(@types/babel__core@7.20.5)(esbuild@0.25.5)(eslint@8.57.1)(react@19.1.0)(type-fest@0.21.3)(typescript@4.9.5):
+  react-scripts@5.0.1(@babel/plugin-syntax-flow@7.27.1(@babel/core@7.27.4))(@babel/plugin-transform-react-jsx@7.27.1(@babel/core@7.27.4))(@types/babel__core@7.20.5)(esbuild@0.25.5)(eslint@8.57.1)(react@19.1.0)(ts-node@10.9.1(@types/node@16.18.126)(typescript@4.9.5))(type-fest@0.21.3)(typescript@4.9.5):
     dependencies:
       '@babel/core': 7.27.4
       '@pmmmwh/react-refresh-webpack-plugin': 0.5.16(react-refresh@0.11.0)(type-fest@0.21.3)(webpack-dev-server@4.15.2(webpack@5.99.9(esbuild@0.25.5)))(webpack@5.99.9(esbuild@0.25.5))
@@ -11722,15 +11872,15 @@ snapshots:
       dotenv: 10.0.0
       dotenv-expand: 5.1.0
       eslint: 8.57.1
-      eslint-config-react-app: 7.0.1(@babel/plugin-syntax-flow@7.27.1(@babel/core@7.27.4))(@babel/plugin-transform-react-jsx@7.27.1(@babel/core@7.27.4))(eslint@8.57.1)(jest@27.5.1)(typescript@4.9.5)
+      eslint-config-react-app: 7.0.1(@babel/plugin-syntax-flow@7.27.1(@babel/core@7.27.4))(@babel/plugin-transform-react-jsx@7.27.1(@babel/core@7.27.4))(eslint@8.57.1)(jest@27.5.1(ts-node@10.9.1(@types/node@16.18.126)(typescript@4.9.5)))(typescript@4.9.5)
       eslint-webpack-plugin: 3.2.0(eslint@8.57.1)(webpack@5.99.9(esbuild@0.25.5))
       file-loader: 6.2.0(webpack@5.99.9(esbuild@0.25.5))
       fs-extra: 10.1.0
       html-webpack-plugin: 5.6.3(webpack@5.99.9(esbuild@0.25.5))
       identity-obj-proxy: 3.0.0
-      jest: 27.5.1
+      jest: 27.5.1(ts-node@10.9.1(@types/node@16.18.126)(typescript@4.9.5))
       jest-resolve: 27.5.1
-      jest-watch-typeahead: 1.1.0(jest@27.5.1)
+      jest-watch-typeahead: 1.1.0(jest@27.5.1(ts-node@10.9.1(@types/node@16.18.126)(typescript@4.9.5)))
       mini-css-extract-plugin: 2.9.2(webpack@5.99.9(esbuild@0.25.5))
       postcss: 8.5.4
       postcss-flexbugs-fixes: 5.0.2(postcss@8.5.4)
@@ -11748,7 +11898,7 @@ snapshots:
       semver: 7.7.2
       source-map-loader: 3.0.2(webpack@5.99.9(esbuild@0.25.5))
       style-loader: 3.3.4(webpack@5.99.9(esbuild@0.25.5))
-      tailwindcss: 3.4.17
+      tailwindcss: 3.4.17(ts-node@10.9.1(@types/node@16.18.126)(typescript@4.9.5))
       terser-webpack-plugin: 5.3.14(esbuild@0.25.5)(webpack@5.99.9(esbuild@0.25.5))
       webpack: 5.99.9(esbuild@0.25.5)
       webpack-dev-server: 4.15.2(webpack@5.99.9(esbuild@0.25.5))
@@ -12455,7 +12605,7 @@ snapshots:
 
   symbol-tree@3.2.4: {}
 
-  tailwindcss@3.4.17:
+  tailwindcss@3.4.17(ts-node@10.9.1(@types/node@16.18.126)(typescript@4.9.5)):
     dependencies:
       '@alloc/quick-lru': 5.2.0
       arg: 5.0.2
@@ -12474,7 +12624,7 @@ snapshots:
       postcss: 8.5.4
       postcss-import: 15.1.0(postcss@8.5.4)
       postcss-js: 4.0.1(postcss@8.5.4)
-      postcss-load-config: 4.0.2(postcss@8.5.4)
+      postcss-load-config: 4.0.2(postcss@8.5.4)(ts-node@10.9.1(@types/node@16.18.126)(typescript@4.9.5))
       postcss-nested: 6.2.0(postcss@8.5.4)
       postcss-selector-parser: 6.1.2
       resolve: 1.22.10
@@ -12574,6 +12724,25 @@ snapshots:
 
   ts-interface-checker@0.1.13: {}
 
+  ts-node@10.9.1(@types/node@16.18.126)(typescript@4.9.5):
+    dependencies:
+      '@cspotcode/source-map-support': 0.8.1
+      '@tsconfig/node10': 1.0.11
+      '@tsconfig/node12': 1.0.11
+      '@tsconfig/node14': 1.0.3
+      '@tsconfig/node16': 1.0.4
+      '@types/node': 16.18.126
+      acorn: 8.15.0
+      acorn-walk: 8.3.4
+      arg: 4.1.3
+      create-require: 1.1.1
+      diff: 4.0.2
+      make-error: 1.3.6
+      typescript: 4.9.5
+      v8-compile-cache-lib: 3.0.1
+      yn: 3.1.1
+    optional: true
+
   tsconfig-paths@3.15.0:
     dependencies:
       '@types/json5': 0.0.29
@@ -12686,6 +12855,13 @@ snapshots:
 
   typescript@5.8.3: {}
 
+  typewriter-effect@2.22.0(react-dom@19.1.0(react@19.1.0))(react@19.1.0):
+    dependencies:
+      prop-types: 15.8.1
+      raf: 3.4.1
+      react: 19.1.0
+      react-dom: 19.1.0(react@19.1.0)
+
   ufo@1.6.1: {}
 
   unbox-primitive@1.1.0:
@@ -12752,6 +12928,9 @@ snapshots:
 
   uuid@8.3.2: {}
 
+  v8-compile-cache-lib@3.0.1:
+    optional: true
+
   v8-to-istanbul@8.1.1:
     dependencies:
       '@types/istanbul-lib-coverage': 2.0.6
@@ -13140,4 +13319,7 @@ snapshots:
       y18n: 5.0.8
       yargs-parser: 20.2.9
 
+  yn@3.1.1:
+    optional: true
+
   yocto-queue@0.1.0: {}
diff --git a/pnpm-workspace.yaml b/pnpm-workspace.yaml
index a5afcf7..a35699a 100644
--- a/pnpm-workspace.yaml
+++ b/pnpm-workspace.yaml
@@ -1,5 +1,5 @@
 packages:
-  - backend
+  - api
   - frontend
 
 onlyBuiltDependencies:
diff --git a/vercel.json b/vercel.json
new file mode 100644
index 0000000..6b26f75
--- /dev/null
+++ b/vercel.json
@@ -0,0 +1,4 @@
+{
+  "version": 2,
+  "routes": [{ "src": "/api/(.*)", "dest": "/api/index.ts" }]
+}