Fix parsing of numbers with plus sign

.github/workflows/deploy.yml

@@ -0,0 +1,41 @@
+name: Deploy Vite app to GitHub Pages
+
+on:
+  push:
+    branches:
+      - main
+
+permissions:
+  contents: read
+  pages: write
+  id-token: write
+
+jobs:
+  build-and-deploy:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup Node
+        uses: actions/setup-node@v4
+        with:
+          node-version: 24
+          cache: 'npm'
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Build
+        run: npm run build
+
+      - name: Setup Pages
+        uses: actions/configure-pages@v4
+
+      - name: Upload artifact
+        uses: actions/upload-pages-artifact@v3
+        with:
+          path: './dist'
+
+      - name: Deploy to GitHub Pages
+        uses: actions/deploy-pages@v4

src/components/HarmonicaTabGenerator.jsx

@@ -32,7 +32,7 @@ const SVG_CONFIG = {
 
 /**
  * Parse input text and identify tab lines vs annotation lines
- * Adds + signs to positive numbers in tab lines
+ * Adds + signs to positive numbers in tab lines (if not already present)
  * Preserves empty lines for spacing
  */
 const parseInput = (text) => {
@@ -42,13 +42,13 @@ const parseInput = (text) => {
     // Check if line is empty
     const isEmpty = line.trim().length === 0;
 
-    // Tab lines contain only numbers, spaces, minus signs, and bend markers
+    // Tab lines contain only numbers, spaces, +/- signs, and bend markers
     const isTabLine =
-      /^[\s\d\-'"`'']+$/.test(line.trim()) && line.trim().length > 0;
+      /^[\s\d\+\-'"`'']+$/.test(line.trim()) && line.trim().length > 0;
 
     let processedContent = line;
 
-    // Add + signs to positive numbers in tab lines
+    // Add + signs to positive numbers in tab lines (only if not already present)
     if (isTabLine) {
       processedContent = line.replace(
         /(\s|^)(\d+)(['"`'']?)/g,

vite.config.js

@@ -4,4 +4,5 @@ import react from '@vitejs/plugin-react'
 // https://vite.dev/config/
 export default defineConfig({
   plugins: [react()],
+  base: '/harmonica-tabs-image-app/',
 })