refactor: move loose test files out of project root

- tests/test_threshold.py: has proper pytest test functions
- scripts/test_*.py: manual run scripts with no test functions

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

scripts/test_plugins.py

@@ -0,0 +1,119 @@
+#!/usr/bin/env python3
+"""
+Test script for plugin system.
+"""
+
+import asyncio
+import logging
+from pathlib import Path
+
+# Setup path
+import sys
+sys.path.insert(0, str(Path(__file__).parent))
+
+from hbd.plugin import PluginRegistry, PluginLoader
+
+logging.basicConfig(
+    level=logging.DEBUG,
+    format="%(asctime)s %(name)s %(levelname)s: %(message)s"
+)
+
+async def test_plugins():
+    """Test plugin loading and collection."""
+    print("=" * 60)
+    print("Testing Plugin System")
+    print("=" * 60)
+    
+    # Create registry and loader
+    registry = PluginRegistry()
+    loader = PluginLoader(registry)
+    
+    # Load plugins
+    plugin_dir = Path(__file__).parent / "hbd" / "plugins"
+    print(f"\n1. Loading plugins from: {plugin_dir}")
+    
+    if not plugin_dir.exists():
+        print(f"   ERROR: Plugin directory does not exist!")
+        return
+    
+    count = await loader.load_from_directory(plugin_dir)
+    print(f"   Loaded {count} plugins")
+    
+    # List loaded plugins
+    print(f"\n2. Loaded plugins:")
+    for plugin in registry.get_all():
+        print(f"   - {plugin.name} v{plugin.version} ({plugin.__class__.__name__})")
+        print(f"     Description: {plugin.description}")
+        print(f"     Interval: {plugin.interval}s")
+    
+    # Test InfoPlugins
+    print(f"\n3. Testing InfoPlugins (collect once):")
+    from hbd.plugin import InfoPlugin
+    for plugin in registry.get_by_type(InfoPlugin):
+        print(f"\n   Collecting {plugin.name}...")
+        try:
+            data = await plugin.collect()
+            print(f"   ✓ Success! Got {len(data)} fields")
+            for key, value in list(data.items())[:5]:  # Show first 5 fields
+                print(f"     {key}: {value}")
+            if len(data) > 5:
+                print(f"     ... and {len(data) - 5} more fields")
+        except Exception as e:
+            print(f"   ✗ Error: {e}")
+    
+    # Test MonitorPlugins
+    print(f"\n4. Testing MonitorPlugins (periodic collection):")
+    from hbd.plugin import MonitorPlugin
+    for plugin in registry.get_by_type(MonitorPlugin):
+        print(f"\n   Collecting {plugin.name}...")
+        try:
+            data = await plugin.collect()
+            print(f"   ✓ Success! Got {len(data)} fields")
+            for key, value in list(data.items())[:8]:  # Show first 8 fields
+                print(f"     {key}: {value}")
+            if len(data) > 8:
+                print(f"     ... and {len(data) - 8} more fields")
+        except Exception as e:
+            print(f"   ✗ Error: {e}")
+    
+    # Test protocol encoding
+    print(f"\n5. Testing protocol encoding:")
+    from hbd.proto import dicttos, stodict
+    
+    # Create sample plugin data
+    test_data = {
+        "plugin": "test_plugin",
+        "cpu_percent": 42.5,
+        "memory_mb": 1024,
+        "processes": 156,
+        "load_avg": [1.2, 0.8, 0.5],
+        "disk_info": {"sda": {"used": 50, "total": 100}}
+    }
+    
+    print(f"   Original data: {test_data}")
+    
+    # Encode
+    encoded = dicttos("PLG", test_data)
+    print(f"   Encoded ({len(encoded)} bytes): {encoded[:50]}...")
+    
+    # Decode
+    decoded = stodict(encoded)
+    print(f"   Decoded: {decoded}")
+    
+    # Verify
+    if decoded.get("ID") == "PLG" and decoded.get("plugin") == "test_plugin":
+        print(f"   ✓ Protocol encoding/decoding works!")
+    else:
+        print(f"   ✗ Protocol encoding/decoding failed!")
+    
+    # Cleanup
+    print(f"\n6. Cleaning up...")
+    await loader.unload_all()
+    print(f"   ✓ Cleanup complete")
+    
+    print(f"\n" + "=" * 60)
+    print("Test complete!")
+    print("=" * 60)
+
+if __name__ == "__main__":
+    asyncio.run(test_plugins())