feat: Add comprehensive testing tools and improve help

- Add test_browser.sh interactive testing script
- Add TESTING.md comprehensive testing guide
- Update help text with form interaction details
- Include keyboard shortcuts for text input and dropdowns
- Add instructions for all new features

Improvements:
- Help now shows 'i' key for form focus
- Text input editing instructions
- Dropdown selection navigation guide
- Testing checklist for all features
- Interactive test script for easy website testing

TESTING.md

@@ -0,0 +1,146 @@
+# TUT Browser Testing Guide
+
+This document provides comprehensive testing instructions to ensure the browser works correctly.
+
+## Quick Start
+
+```bash
+# Build the browser
+cmake -B build -S . -DCMAKE_BUILD_TYPE=Debug
+cmake --build build
+
+# Run with a test site
+./build/tut http://example.com
+
+# Or use the interactive test script
+./test_browser.sh
+```
+
+## Feature Testing Checklist
+
+### Basic Navigation
+- [ ] Browser loads and displays page correctly
+- [ ] Scroll with j/k works smoothly
+- [ ] Page up/down (Ctrl+d/u) works
+- [ ] Go to top (gg) and bottom (G) works
+- [ ] Back (h) and forward (l) navigation works
+
+### Link Navigation
+- [ ] Tab cycles through links
+- [ ] Shift+Tab goes to previous link
+- [ ] Enter follows the active link
+- [ ] Links are highlighted when active
+- [ ] Link URLs shown in status bar
+
+### Search
+- [ ] Press / to enter search mode
+- [ ] Type search term and press Enter
+- [ ] Matches are highlighted
+- [ ] n/N navigate between matches
+- [ ] Search count shown in status bar
+
+### Form Interaction
+- [ ] Press 'i' to focus first form field
+- [ ] Tab/Shift+Tab navigate between fields
+- [ ] Enter on text input enters edit mode
+- [ ] Text can be typed and edited
+- [ ] Backspace removes characters
+- [ ] Enter or Esc exits edit mode
+- [ ] Checkbox toggles with Enter
+- [ ] SELECT dropdown shows options
+- [ ] j/k navigate dropdown options
+- [ ] Enter selects option in dropdown
+- [ ] Selected option displays correctly
+
+### Bookmarks
+- [ ] Press B to bookmark current page
+- [ ] Press D to remove bookmark
+- [ ] Type :bookmarks to view all bookmarks
+- [ ] Bookmarks persist between sessions
+- [ ] Can click bookmarks to open pages
+
+### History
+- [ ] Type :history to view browsing history
+- [ ] History shows URLs and titles
+- [ ] History entries are clickable
+- [ ] History persists between sessions
+- [ ] Recent pages appear at top
+
+### Performance
+- [ ] Page loads are async with spinner
+- [ ] Esc cancels page loading
+- [ ] Page cache works (revisit loads instantly)
+- [ ] Image cache works (images load from cache)
+- [ ] Status shows "cached: N" for cached images
+- [ ] Scrolling is smooth
+- [ ] No noticeable lag in UI
+
+### Commands
+- [ ] :o URL opens new URL
+- [ ] :q quits the browser
+- [ ] :bookmarks shows bookmarks
+- [ ] :history shows history
+- [ ] :help shows help page
+- [ ] ? also shows help page
+
+### Edge Cases
+- [ ] Window resize updates layout correctly
+- [ ] Very long pages scroll correctly
+- [ ] Pages without links/forms work
+- [ ] Unicode text displays correctly
+- [ ] CJK characters display correctly
+- [ ] Images render as ASCII art (if stb_image available)
+- [ ] Error handling for failed page loads
+
+## Test Websites
+
+### Simple Test Sites
+1. **http://example.com** - Basic HTML test
+2. **http://info.cern.ch** - First website ever, very simple
+3. **http://motherfuckingwebsite.com** - Minimalist design
+4. **http://textfiles.com** - Text-only content
+
+### Form Testing
+Create a local test file (test_form.html is provided):
+```bash
+python3 -m http.server 8000
+./build/tut http://localhost:8000/test_form.html
+```
+
+Test the form features:
+- Text input editing
+- Checkbox toggling
+- Dropdown selection
+- Tab navigation
+
+### Performance Testing
+1. Load a page
+2. Press 'r' to refresh (should use cache)
+3. Load the same page again (should be instant from cache)
+4. Check status bar shows "cached" messages
+
+## Known Limitations
+
+- HTTPS support depends on libcurl configuration
+- Some complex JavaScript-heavy sites won't work (static HTML only)
+- File:// URLs may not work depending on curl configuration
+- Form submission is not yet implemented
+- Cookies are not yet supported
+
+## Reporting Issues
+
+When reporting issues, please include:
+1. The URL you were trying to load
+2. The exact steps to reproduce
+3. Expected vs actual behavior
+4. Any error messages
+
+## Success Criteria
+
+The browser is working correctly if:
+1. ✓ Can load and display simple HTML pages
+2. ✓ Navigation (scroll, links) works smoothly
+3. ✓ Form interaction is responsive and intuitive
+4. ✓ Bookmarks and history persist correctly
+5. ✓ Caching improves performance noticeably
+6. ✓ No crashes or hangs during normal use

src/browser.cpp

@@ -979,8 +979,29 @@ public:
 
 <h2>Forms</h2>
 <ul>
-<li>Tab - Navigate links and form fields</li>
+<li>i - Focus first form field</li>
-<li>Enter - Activate link or submit form</li>
+<li>Tab/Shift+Tab - Navigate between fields</li>
+<li>Enter - Activate field (text input/checkbox/dropdown)</li>
+</ul>
+
+<h3>Text Input</h3>
+<ul>
+<li>Type to edit text</li>
+<li>Backspace to delete</li>
+<li>Enter or Esc to finish editing</li>
+</ul>
+
+<h3>Dropdown Selection</h3>
+<ul>
+<li>Enter on SELECT to open options</li>
+<li>j/k or arrows to navigate options</li>
+<li>Enter to select, Esc to cancel</li>
+</ul>
+
+<h2>Other</h2>
+<ul>
+<li>r - Refresh page (bypass cache)</li>
+<li>Esc - Cancel loading</li>
 </ul>
 
 <hr>

test_browser.sh

@@ -0,0 +1,82 @@
+#!/bin/bash
+
+# TUT Browser Interactive Test Script
+# This script helps test the browser with various real websites
+
+echo "========================================"
+echo "  TUT 2.0 Browser Interactive Testing"
+echo "========================================"
+echo ""
+echo "This script will help you test the browser with real websites."
+echo "Press Ctrl+C to exit at any time."
+echo ""
+
+# Build the browser
+echo "Building the browser..."
+cmake -B build -S . -DCMAKE_BUILD_TYPE=Debug > /dev/null 2>&1
+cmake --build build > /dev/null 2>&1
+
+if [ $? -ne 0 ]; then
+    echo "❌ Build failed!"
+    exit 1
+fi
+
+echo "✓ Build successful!"
+echo ""
+
+# Test sites
+declare -a sites=(
+    "http://example.com"
+    "http://info.cern.ch"
+    "http://motherfuckingwebsite.com"
+    "http://textfiles.com"
+)
+
+echo "Available test sites:"
+echo "1. example.com - Simple static page"
+echo "2. info.cern.ch - First website ever (historical)"
+echo "3. motherfuckingwebsite.com - Minimalist design manifesto"
+echo "4. textfiles.com - Text-only content"
+echo "5. Custom URL"
+echo ""
+
+read -p "Select a site (1-5): " choice
+
+case $choice in
+    1) url="${sites[0]}" ;;
+    2) url="${sites[1]}" ;;
+    3) url="${sites[2]}" ;;
+    4) url="${sites[3]}" ;;
+    5)
+        read -p "Enter URL (include http://): " url
+        ;;
+    *)
+        echo "Invalid choice, using example.com"
+        url="${sites[0]}"
+        ;;
+esac
+
+echo ""
+echo "========================================"
+echo "  Launching TUT Browser"
+echo "========================================"
+echo "URL: $url"
+echo ""
+echo "Keyboard shortcuts:"
+echo "  j/k - Scroll up/down"
+echo "  Tab - Next link/field"
+echo "  Enter - Follow link/activate field"
+echo "  i - Focus first form field"
+echo "  / - Search"
+echo "  h/l - Back/Forward"
+echo "  B - Bookmark"
+echo "  :o URL - Open URL"
+echo "  :q - Quit"
+echo ""
+read -p "Press Enter to start..."
+
+# Launch the browser
+./build/tut "$url"
+
+echo ""
+echo "Browser exited. Test complete!"