fix: update DiffRhythm workflows with correct node names and parameters

Updated all 4 DiffRhythm workflow JSON files to use actual node class names from ComfyUI_DiffRhythm:

**Node Name Changes:**
- DiffRhythmTextToMusic → DiffRhythmRun
- DiffRhythmRandomGeneration → DiffRhythmRun (with empty style_prompt)
- DiffRhythmReferenceBasedGeneration → DiffRhythmRun (with audio input)

**Corrected Parameter Structure:**
All workflows now use proper widgets_values array matching DiffRhythmRun INPUT_TYPES:
1. model (string: "cfm_model_v1_2.pt", "cfm_model.pt", or "cfm_full_model.pt")
2. style_prompt (string: multiline text or empty for random)
3. unload_model (boolean: default true)
4. odeint_method (string: "euler", "midpoint", "rk4", "implicit_adams")
5. steps (int: 1-100, default 30)
6. cfg (int: 1-10, default 4)
7. quality_or_speed (string: "quality" or "speed")
8. seed (int: -1 for random, or specific number)
9. edit (boolean: default false)
10. edit_segments (string: "[-1, 20], [60, -1]")

**Workflow-Specific Updates:**

**diffrhythm-simple-t2m-v1.json:**
- Text-to-music workflow for 95s generation
- Uses cfm_model_v1_2.pt with text prompt guidance
- Default settings: steps=30, cfg=4, speed mode, seed=42

**diffrhythm-full-length-t2m-v1.json:**
- Full-length 4m45s (285s) generation
- Uses cfm_full_model.pt for extended compositions
- Quality mode enabled for better results
- Default seed=123

**diffrhythm-reference-based-v1.json:**
- Reference audio + text prompt workflow
- Uses LoadAudio node connected to style_audio_or_edit_song input
- Higher cfg=5 for stronger prompt adherence
- Demonstrates optional audio input connection

**diffrhythm-random-generation-v1.json:**
- Pure random generation (no prompt/guidance)
- Empty style_prompt string
- Minimal cfg=1 for maximum randomness
- Random seed=-1 for unique output each time

**Documentation Updates:**
- Removed PLACEHOLDER notes
- Updated usage sections with correct parameter descriptions
- Added notes about optional MultiLineLyricsDR node for lyrics
- Clarified parameter behavior and recommendations

These workflows are now ready to use in ComfyUI with the installed DiffRhythm extension.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

comfyui/workflows/text-to-music/diffrhythm-simple-t2m-v1.json

@@ -4,9 +4,9 @@
   "nodes": [
     {
       "id": 1,
-      "type": "DiffRhythmTextToMusic",
+      "type": "DiffRhythmRun",
       "pos": [100, 100],
-      "size": [400, 300],
+      "size": [400, 400],
       "flags": {},
       "order": 0,
       "mode": 0,
@@ -14,17 +14,23 @@
         {
           "name": "AUDIO",
           "type": "AUDIO",
-          "links": [1]
+          "links": [1, 2]
         }
       ],
-      "properties": {},
+      "properties": {
+        "Node name for S&R": "DiffRhythmRun"
+      },
       "widgets_values": [
+        "cfm_model_v1_2.pt",
         "Upbeat electronic dance music with energetic beats and synthesizer melodies",
-        95.0,
-        4.0,
+        true,
+        "euler",
+        30,
+        4,
+        "speed",
         42,
-        "cfm_model_v1_2",
-        "auto"
+        false,
+        "[-1, 20], [60, -1]"
       ],
       "title": "DiffRhythm Text-to-Music (95s)"
     },
@@ -43,7 +49,9 @@
           "link": 1
         }
       ],
-      "properties": {},
+      "properties": {
+        "Node name for S&R": "PreviewAudio"
+      },
       "title": "Preview Audio"
     },
     {
@@ -61,7 +69,9 @@
           "link": 2
         }
       ],
-      "properties": {},
+      "properties": {
+        "Node name for S&R": "SaveAudio"
+      },
       "widgets_values": [
         "diffrhythm_output"
       ],
@@ -90,19 +100,23 @@
         "system_deps": ["espeak-ng"]
       },
       "usage": {
-        "prompt": "Text description of the desired music style, mood, and instruments",
-        "duration": "Fixed at 95 seconds for DiffRhythm 1.2 model",
-        "guidance_scale": "Controls how closely the output follows the prompt (1.0-10.0, default: 4.0)",
+        "model": "cfm_model_v1_2.pt (DiffRhythm 1.2 - 95s generation)",
+        "style_prompt": "Text description of the desired music style, mood, and instruments",
+        "unload_model": "Boolean to unload model after generation (default: true)",
+        "odeint_method": "ODE solver: euler, midpoint, rk4, implicit_adams (default: euler)",
+        "steps": "Number of diffusion steps: 1-100 (default: 30)",
+        "cfg": "Classifier-free guidance scale: 1-10 (default: 4)",
+        "quality_or_speed": "Generation mode: quality or speed (default: speed)",
         "seed": "Random seed for reproducibility (default: 42)",
-        "model": "cfm_model_v1_2 (DiffRhythm 1.2 - 95s generation)",
-        "device": "auto (automatic GPU selection)"
+        "edit": "Enable segment editing mode (default: false)",
+        "edit_segments": "Segments to edit when edit=true (default: [-1, 20], [60, -1])"
       },
       "notes": [
         "This workflow uses DiffRhythm 1.2 for 95-second music generation",
-        "All parameters are optional - can generate music randomly without inputs",
+        "All parameters except model and style_prompt are optional",
         "Supports English and Chinese text prompts",
         "Generation time: ~30-60 seconds on RTX 4090",
-        "PLACEHOLDER: Actual node names and parameters need to be updated after ComfyUI_DiffRhythm installation"
+        "Can optionally connect MultiLineLyricsDR node for lyrics input"
       ]
     }
   },