feat: implement script-based database clearing for development

- Add interactive clear-database.sh script with platform detection
- Support Electron SQLite database clearing (Linux/macOS/Windows)
- Provide web browser clearing instructions (custom profiles + DevTools)
- Remove complex programmatic database clearing from platform services
- Update documentation with comprehensive clearing guide
- Add safety features: interactive guidance, platform-specific paths
- Simplify approach: avoid browser storage complications and race conditions

Enables reliable database clearing for development without complex code.

README.md

@@ -118,3 +118,63 @@ Gifts make the world go 'round!
 * Time Safari logo assisted by [DALL-E in ChatGPT](https://chat.openai.com/g/g-2fkFE8rbu-dall-e)
 * [DiceBear](https://www.dicebear.com/licenses/) and [Avataaars](https://www.dicebear.com/styles/avataaars/#details) for human-looking identicons
 * Some gratitude prompts thanks to [Develop Good Habits](https://www.developgoodhabits.com/gratitude-journal-prompts/)
+
+## Development Database Clearing
+
+TimeSafari provides a simple script-based approach to clear the database for development purposes.
+
+### Quick Usage
+```bash
+# Run the database clearing script
+./scripts/clear-database.sh
+
+# Then restart your development server
+npm run build:electron:dev  # For Electron
+npm run build:web:dev       # For Web
+```
+
+### What It Does
+
+#### **Electron (Desktop App)**
+- Automatically finds and clears the SQLite database files
+- Works on Linux, macOS, and Windows
+- Clears all data and forces fresh migrations on next startup
+
+#### **Web Browser**
+- Provides instructions for using custom browser data directories
+- Shows manual clearing via browser DevTools
+- Ensures reliable database clearing without browser complications
+
+### Safety Features
+- ✅ **Interactive Script**: Guides you through the process
+- ✅ **Platform Detection**: Automatically detects your OS
+- ✅ **Clear Instructions**: Step-by-step guidance for each platform
+- ✅ **Safe Paths**: Only clears TimeSafari-specific data
+
+### Manual Commands (if needed)
+
+#### **Electron Database Location**
+```bash
+# Linux
+rm -rf ~/.config/TimeSafari/*
+
+# macOS  
+rm -rf ~/Library/Application\ Support/TimeSafari/*
+
+# Windows
+rmdir /s /q %APPDATA%\TimeSafari
+```
+
+#### **Web Browser (Custom Data Directory)**
+```bash
+# Create isolated browser profile
+mkdir ~/timesafari-dev-data
+
+# Start browser with custom profile
+google-chrome --user-data-dir=~/timesafari-dev-data
+
+# Clear when needed
+rm -rf ~/timesafari-dev-data
+```
+
+See the script for complete platform-specific instructions.