feat(backend): CivitAI download support for other model types with subtype routing

py/utils/constants.py

@@ -126,6 +126,20 @@ CIVITAI_TYPE_TO_OTHER_SUB_TYPE = {
     "controlnet": "controlnet",
 }
 
+# CivitAI ModelFile.type values -> internal sub_type for the "other" model
+# page. Used for download routing only, and strictly as an explicit user file
+# pick or a fallback when model.type maps to nothing — checkpoint models
+# routinely bundle VAE/Text Encoder component files, so file types must never
+# override a mapped model.type.
+CIVITAI_FILE_TYPE_TO_OTHER_SUB_TYPE = {
+    "VAE": "vae",
+    "Upscaler": "upscaler",
+    "Text Encoder": "text_encoder",
+    "Vision Encoder": "clip_vision",
+    "CLIPVision": "clip_vision",
+    "ControlNet": "controlnet",
+}
+
 # Backward compatibility alias
 VALID_LORA_TYPES = VALID_LORA_SUB_TYPES
 
@@ -134,6 +148,7 @@ CIVITAI_USER_MODEL_TYPES = [
     *VALID_LORA_TYPES,
     "textualinversion",
     "checkpoint",
+    *sorted(VALID_OTHER_CIVITAI_TYPES),
 ]
 
 # Default chunk size in megabytes used for hashing large files.

py/utils/example_images_download_manager.py

@@ -420,6 +420,10 @@ class DownloadManager:
                 embedding_scanner = await ServiceRegistry.get_embedding_scanner()
                 scanners.append(("embedding", embedding_scanner))
 
+            if "other" in model_types:
+                other_scanner = await ServiceRegistry.get_other_scanner()
+                scanners.append(("other", other_scanner))
+
             # Load progress file to check processed models (async to avoid blocking)
             settings_manager = get_settings_manager()
             active_library = settings_manager.get_active_library_name()
@@ -600,6 +604,10 @@ class DownloadManager:
                 embedding_scanner = await ServiceRegistry.get_embedding_scanner()
                 scanners.append(("embedding", embedding_scanner))
 
+            if "other" in model_types:
+                other_scanner = await ServiceRegistry.get_other_scanner()
+                scanners.append(("other", other_scanner))
+
             # Get all models
             all_models = []
             for scanner_type, scanner in scanners:
@@ -1098,6 +1106,10 @@ class DownloadManager:
                 embedding_scanner = await ServiceRegistry.get_embedding_scanner()
                 scanners.append(("embedding", embedding_scanner))
 
+            if "other" in model_types:
+                other_scanner = await ServiceRegistry.get_other_scanner()
+                scanners.append(("other", other_scanner))
+
             # Find the specified models
             models_to_process = []
             for scanner_type, scanner in scanners:

py/utils/models.py

@@ -340,7 +340,8 @@ class OtherModelMetadata(BaseModelMetadata):
         sha256_value = (file_info.get("hashes") or {}).get("SHA256", "").lower()
         # Map the CivitAI model type onto our sub_types; unknown types keep the
         # placeholder until the scanner re-derives sub_type from the location.
-        civitai_type = str(version_info.get("type", "") or "").lower()
+        # The type lives at version["model"]["type"], not version["type"].
+        civitai_type = str((version_info.get("model") or {}).get("type", "") or "").lower()
         sub_type = CIVITAI_TYPE_TO_OTHER_SUB_TYPE.get(civitai_type, "vae")
 
         # Extract tags and description if available