chore: update frontend node_modules and add favicon asset

.github/workflows/deploy.yml

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+name: Deploy to GitHub Pages
+
+on:
+  push:
+    branches:
+      - main
+      - feature/markitdowm-ui
+  workflow_dispatch:
+
+permissions:
+  contents: read
+  pages: write
+  id-token: write
+
+concurrency:
+  group: "pages"
+  cancel-in-progress: true
+
+jobs:
+  deploy:
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Set up Node
+        uses: actions/setup-node@v4
+        with:
+          node-version: 24
+          cache: 'npm'
+          cache-dependency-path: frontend/package-lock.json
+
+      - name: Install dependencies
+        run: npm install
+        working-directory: frontend
+
+      - name: Build
+        run: npm run build
+        working-directory: frontend
+
+      - name: Setup Pages
+        uses: actions/configure-pages@v4
+
+      - name: Upload artifact
+        uses: actions/upload-pages-artifact@v3
+        with:
+          path: './frontend/dist'
+
+      - name: Deploy to GitHub Pages
+        id: deployment
+        uses: actions/deploy-pages@v4

backend/app.py

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+# pyrefly: ignore [missing-import]
+from fastapi import FastAPI, UploadFile, File, HTTPException
+# pyrefly: ignore [missing-import]
+from fastapi.middleware.cors import CORSMiddleware
+from markitdown import MarkItDown
+import tempfile
+import os
+import shutil
+
+app = FastAPI(title="MarkItDown API")
+
+# Allow CORS for GitHub Pages frontend
+app.add_middleware(
+    CORSMiddleware,
+    allow_origins=["*"],  # In production, restrict this to your GitHub Pages URL
+    allow_credentials=True,
+    allow_methods=["*"],
+    allow_headers=["*"],
+)
+
+markitdown = MarkItDown()
+
+@app.post("/api/convert")
+async def convert_file(file: UploadFile = File(...)):
+    if not file.filename:
+        raise HTTPException(status_code=400, detail="No file provided")
+
+    # Create a temporary file to save the uploaded file
+    # We use a named temporary file so markitdown can read it
+    temp_file = tempfile.NamedTemporaryFile(delete=False, suffix=os.path.splitext(file.filename)[1])
+    try:
+        # Copy the uploaded file contents to the temporary file
+        shutil.copyfileobj(file.file, temp_file)
+        temp_file.close()
+
+        # Convert using MarkItDown
+        result = markitdown.convert(temp_file.name)
+
+        return {
+            "filename": file.filename,
+            "markdown": result.text_content
+        }
+    except Exception as e:
+        raise HTTPException(status_code=500, detail=f"Conversion failed: {str(e)}")
+    finally:
+        file.file.close()
+        # Clean up the temporary file
+        if os.path.exists(temp_file.name):
+            os.unlink(temp_file.name)
+
+@app.get("/api/health")
+async def health_check():
+    return {"status": "ok"}

backend/requirements.txt

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+fastapi==0.110.1
+uvicorn==0.29.0
+python-multipart==0.0.9
+markitdown==0.0.1a2

frontend/.gitignore

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+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+pnpm-debug.log*
+lerna-debug.log*
+
+node_modules
+dist
+dist-ssr
+*.local
+
+# Editor directories and files
+.vscode/*
+!.vscode/extensions.json
+.idea
+.DS_Store
+*.suo
+*.ntvs*
+*.njsproj
+*.sln
+*.sw?

frontend/.oxlintrc.json

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+{
+  "$schema": "./node_modules/oxlint/configuration_schema.json",
+  "plugins": ["react", "oxc"],
+  "rules": {
+    "react/rules-of-hooks": "error",
+    "react/only-export-components": ["warn", { "allowConstantExport": true }]
+  }
+}

frontend/README.md

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+# React + Vite
+
+This template provides a minimal setup to get React working in Vite with HMR and some Oxlint rules.
+
+Currently, two official plugins are available:
+
+- [@vitejs/plugin-react](https://github.com/vitejs/vite-plugin-react/blob/main/packages/plugin-react) uses [Oxc](https://oxc.rs)
+- [@vitejs/plugin-react-swc](https://github.com/vitejs/vite-plugin-react/blob/main/packages/plugin-react-swc) uses [SWC](https://swc.rs/)
+
+## React Compiler
+
+The React Compiler is not enabled on this template because of its impact on dev & build performances. To add it, see [this documentation](https://react.dev/learn/react-compiler/installation).
+
+## Expanding the Oxlint configuration
+
+If you are developing a production application, we recommend using TypeScript with type-aware lint rules enabled. Check out the [TS template](https://github.com/vitejs/vite/tree/main/packages/create-vite/template-react-ts) for information on how to integrate TypeScript and Oxlint's TypeScript related rules in your project.

frontend/index.html

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+<!doctype html>
+<html lang="en">
+  <head>
+    <meta charset="UTF-8" />
+    <link rel="icon" type="image/svg+xml" href="/vite.svg" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <title>MarkItDown Web UI</title>
+  </head>
+  <body>
+    <div id="root"></div>
+    <script type="module" src="/src/main.jsx"></script>
+  </body>
+</html>