docs: document non-commercial optional backends for commercial users

NON-COMMERCIAL-MODELS.md

@@ -0,0 +1,19 @@
+# Non-Commercial Optional Backends
+
+This project's own code is licensed under **AGPL-3.0** (see `LICENSE`) and is free
+for commercial use under that license. However, some **optional** model backends it
+can integrate are released by their authors under **non-commercial** licenses. If you
+use this software commercially, **do not enable these backends** (or substitute a
+permissively-licensed alternative):
+
+| Optional backend | Upstream license | Commercial use |
+|---|---|---|
+| CodeFormer (face restoration) | S-Lab License 1.0 | ❌ non-commercial |
+| MusicGen / AudioGen / MAGNeT / JASCO (AudioCraft) | CC-BY-NC 4.0 (weights) | ❌ non-commercial |
+| InsightFace / inswapper (face swap) | research/non-commercial | ❌ non-commercial |
+| SadTalker (talking-head) | check upstream terms | ⚠️ verify |
+
+These models and their weights are **not bundled or auto-downloaded** by this
+repository; they are fetched on demand only if you explicitly enable the
+corresponding feature. Permissively-licensed defaults (e.g. MuseTalk MIT + FAN
+landmarks for lip-sync) should be preferred for commercial deployments.

README.md

@@ -657,6 +657,9 @@ make test
 
 ## License
 
+> **Commercial use:** the code is AGPL-3.0 (commercial-OK), but some *optional* model backends are non-commercial. See [NON-COMMERCIAL-MODELS.md](NON-COMMERCIAL-MODELS.md) before commercial deployment.
+
+
 [GNU AGPLv3](LICENSE)
 
 ---