Restore install.py for omnivoice --no-deps only

requirements.txt cannot install omnivoice (it would pull in torch==2.8.*
and break ComfyUI). install.py now does exactly one thing: install
omnivoice --no-deps, skipped if already present. All other deps remain
in requirements.txt for ComfyUI Manager to handle normally.

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

README.md

@@ -18,13 +18,16 @@ A ComfyUI custom node for [OmniVoice](https://github.com/k2-fsa/OmniVoice) — a
    git clone https://github.com/ethanfel/ComfyUI-Omnivoice.git
    ```
 
-2. Install `omnivoice` **without its pinned torch** (one-time manual step):
+2. Install via **ComfyUI Manager** (recommended) — it runs `install.py` and `requirements.txt` automatically.
+
+   Or manually:
    ```bash
    pip install omnivoice --no-deps
+   pip install -r requirements.txt
    ```
-   > **Why `--no-deps`?** omnivoice pins `torch==2.8.*` from a CUDA 12.8 index. Installing it normally would overwrite ComfyUI's torch build. The `--no-deps` flag skips that pin; ComfyUI's existing torch works fine at runtime.
+   > **Why `--no-deps` for omnivoice?** It pins `torch==2.8.*` from a CUDA 12.8 index. Installing it normally would overwrite ComfyUI's torch build. `install.py` handles this automatically; `requirements.txt` covers the remaining deps safely.
 
-3. Restart ComfyUI. ComfyUI Manager will install the remaining dependencies from `requirements.txt` automatically. The nodes will appear under the **OmniVoice** category.
+3. Restart ComfyUI. The nodes will appear under the **OmniVoice** category.
 
 ## Nodes
 

install.py

@@ -0,0 +1,21 @@
+"""
+ComfyUI Manager calls this file before installing requirements.txt.
+
+omnivoice cannot be listed in requirements.txt because its default install
+pins torch==2.8.* from a CUDA 12.8 index, which would overwrite ComfyUI's
+torch build. We install it here with --no-deps to skip that pin.
+All other dependencies are declared normally in requirements.txt.
+"""
+import subprocess
+import sys
+
+
+def _installed(package):
+    import importlib.util
+    return importlib.util.find_spec(package) is not None
+
+
+if not _installed("omnivoice"):
+    subprocess.check_call([
+        sys.executable, "-m", "pip", "install", "omnivoice", "--no-deps"
+    ])