chore: 🔧 clean up code structure and remove unused files

* Refactored several modules for better readability
* Removed deprecated functions and variables
* Improved overall project organization

pkg/handlers/static/README.md

@@ -0,0 +1,82 @@
+# Static Files
+
+This directory contains the embedded static files for the WhatsHooked landing page.
+
+## Files
+
+- `index.html` - Landing page with API documentation
+- `logo.png` - WhatsHooked logo (from `assets/image/whatshooked_tp.png`)
+
+## How It Works
+
+These files are embedded into the Go binary using `go:embed` directive in `static.go`.
+
+When you build the server:
+```bash
+go build ./cmd/server/
+```
+
+The files in this directory are compiled directly into the binary, so the server can run without any external files.
+
+## Updating the Landing Page
+
+1. **Edit the HTML:**
+   ```bash
+   vim pkg/handlers/static/index.html
+   ```
+
+2. **Rebuild the server:**
+   ```bash
+   go build ./cmd/server/
+   ```
+
+3. **Restart the server:**
+   ```bash
+   ./server -config bin/config.json
+   ```
+
+The changes will be embedded in the new binary.
+
+## Updating the Logo
+
+1. **Replace the logo:**
+   ```bash
+   cp path/to/new-logo.png pkg/handlers/static/logo.png
+   ```
+
+2. **Rebuild:**
+   ```bash
+   go build ./cmd/server/
+   ```
+
+## Routes
+
+- `GET /` - Serves `index.html`
+- `GET /static/logo.png` - Serves `logo.png`
+- `GET /static/*` - Serves any file in this directory
+
+## Development Tips
+
+- Files are cached with `Cache-Control: public, max-age=3600` (1 hour)
+- Force refresh in browser: `Ctrl+Shift+R` or `Cmd+Shift+R`
+- Changes require rebuild - no hot reload
+- Keep files small - they're embedded in the binary
+
+## File Structure
+
+```
+pkg/handlers/
+├── static.go         # Handler with go:embed directive
+├── static/
+│   ├── index.html    # Landing page
+│   ├── logo.png      # Logo image
+│   └── README.md     # This file
+```
+
+## Benefits of Embedded Files
+
+✅ **Single binary deployment** - No external dependencies
+✅ **Fast serving** - Files loaded from memory
+✅ **No file system access** - Works in restricted environments
+✅ **Portable** - Binary includes everything
+✅ **Version controlled** - Static assets tracked with code