refactor(nodes): standardize node class names with LM suffix

Rename all node classes to use consistent 'LM' suffix pattern:
- LoraCyclerNode → LoraCyclerLM
- LoraManagerLoader → LoraLoaderLM
- LoraManagerTextLoader → LoraTextLoaderLM
- LoraStacker → LoraStackerLM
- LoraRandomizerNode → LoraRandomizerLM
- LoraPoolNode → LoraPoolLM
- WanVideoLoraSelectFromText → WanVideoLoraTextSelectLM
- DebugMetadata → DebugMetadataLM
- TriggerWordToggle → TriggerWordToggleLM
- PromptLoraManager → PromptLM

Updated:
- Core node class definitions (9 files)
- NODE_CLASS_MAPPINGS in __init__.py
- Node type mappings in node_extractors.py
- All related test imports and references
- Logger prefixes for consistency

Frontend extension names remain unchanged (LoraManager.LoraStacker, etc.)

tests/nodes/test_lora_randomizer.py

@@ -1,17 +1,17 @@
-"""Tests for LoraRandomizerNode roll_mode functionality"""
+"""Tests for LoraRandomizerLM roll_mode functionality"""
 
 from unittest.mock import AsyncMock
 
 import pytest
 
-from py.nodes.lora_randomizer import LoraRandomizerNode
+from py.nodes.lora_randomizer import LoraRandomizerLM
 from py.services import service_registry
 
 
 @pytest.fixture
 def randomizer_node():
-    """Create a LoraRandomizerNode instance for testing"""
-    return LoraRandomizerNode()
+    """Create a LoraRandomizerLM instance for testing"""
+    return LoraRandomizerLM()
 
 
 @pytest.fixture