docs: add exact Qwen3-TTS download commands and model sizes

README.md

@@ -30,13 +30,32 @@ SaveAudioMP3 → final podcast audio
 - `vibevoice-1.5B` ⚠️ — Partially downloaded (incomplete files)
 
 ### Qwen3-TTS
-- `Qwen3-TTS-12Hz-1.7B-Base` ❌ — Needs download (voice cloning)
-- `Qwen3-TTS-12Hz-1.7B-CustomVoice` ❌ — Needs download (preset voices)
-- `Qwen3-TTS-12Hz-1.7B-VoiceDesign` ❌ — Needs download (voice design via description)
+- `Qwen3-TTS-12Hz-1.7B-Base` ❌ — Needs download (3.9GB, voice cloning)
+- `Qwen3-TTS-12Hz-1.7B-CustomVoice` ❌ — Needs download (3.8GB, preset voices)
+- `Qwen3-TTS-12Hz-1.7B-VoiceDesign` ❌ — **CRITICAL** — Needs download (3.8GB, voice design via description)
+
+**To download on the ComfyUI server:**
+```bash
+# SSH into ComfyUI server or run via ComfyUI Manager
+# Models go in: models/TTS/Qwen3-TTS/
+
+# VoiceDesign model (for generating character voices from descriptions)
+huggingface-cli download Qwen/Qwen3-TTS-12Hz-1.7B-VoiceDesign \
+  --local-dir /path/to/ComfyUI/models/TTS/Qwen3-TTS/Qwen3-TTS-12Hz-1.7B-VoiceDesign
+
+# Base model (for voice cloning from reference audio)
+huggingface-cli download Qwen/Qwen3-TTS-12Hz-1.7B-Base \
+  --local-dir /path/to/ComfyUI/models/TTS/Qwen3-TTS/Qwen3-TTS-12Hz-1.7B-Base
+
+# CustomVoice model (for preset voices with instruction control)
+huggingface-cli download Qwen/Qwen3-TTS-12Hz-1.7B-CustomVoice \
+  --local-dir /path/to/ComfyUI/models/TTS/Qwen3-TTS/Qwen3-TTS-12Hz-1.7B-CustomVoice
+```
 
-To download, put models in: `ComfyUI/models/TTS/Qwen3-TTS/`
 Source: https://huggingface.co/collections/Qwen/qwen3-tts
 
+**Note:** The ComfyUI-Qwen3-TTS node (by DarioFT) expects models in the TTS folder. The VoiceDesign model is essential for our pipeline — it converts natural language voice descriptions into reference audio.
+
 ## Available TTS Engines (TTS Audio Suite)
 
 | Engine | Multi-Speaker | VRAM | Use Case |