feat(download): add configurable base model download exclusions

locales/en.json

@@ -323,6 +323,24 @@
                 "saveFailed": "Unable to save skip paths: {message}"
             }
         },
+        "downloadSkipBaseModels": {
+            "label": "Skip downloads for base models",
+            "help": "When a model version uses one of these base models, LoRA Manager will skip the download before any file transfer starts. Applies to all download flows. Only supported base models can be selected here.",
+            "searchPlaceholder": "Filter base models...",
+            "empty": "No base models match the current search.",
+            "summary": {
+                "none": "None selected",
+                "count": "{count} selected"
+            },
+            "actions": {
+                "edit": "Edit",
+                "collapse": "Collapse",
+                "clear": "Clear"
+            },
+            "validation": {
+                "saveFailed": "Unable to save excluded base models: {message}"
+            }
+        },
         "layoutSettings": {
             "displayDensity": "Display Density",
             "displayDensityOptions": {
@@ -1467,6 +1485,7 @@
             "pleaseSelectVersion": "Please select a version",
             "versionExists": "This version already exists in your library",
             "downloadCompleted": "Download completed successfully",
+            "downloadSkippedByBaseModel": "Skipped download because base model {baseModel} is excluded",
             "autoOrganizeSuccess": "Auto-organize completed successfully for {count} {type}",
             "autoOrganizePartialSuccess": "Auto-organize completed with {success} moved, {failures} failed out of {total} models",
             "autoOrganizeFailed": "Auto-organize failed: {error}",