Add mflux to model-libraries for download tracking

Registers mflux (line-by-line MLX port of FLUX/Z-Image image generation
models for Apple Silicon, github.com/filipstrand/mflux) in
model-libraries.ts so that repos tagged with library_name: mflux get
download counts.

Most mflux repos do not ship a config.json (they only contain
safetensors weights + tokenizer files), so the default config.json
fallback returns 0 downloads even though the repos are actively used.
mflux loads weights via huggingface_hub.snapshot_download with
allow_patterns including *.safetensors, so countDownloads matches on
safetensors path extension.

Refs #2091

Author: Sanjays2402

packages/tasks/src/model-libraries.ts

@@ -925,6 +925,13 @@ export const MODEL_LIBRARIES_UI_ELEMENTS = {
 		filter: false,
 		countDownloads: `path:"model.safetensors"`,
 	},
+	mflux: {
+		prettyLabel: "mflux",
+		repoName: "mflux",
+		repoUrl: "https://github.com/filipstrand/mflux",
+		filter: false,
+		countDownloads: `path_extension:"safetensors"`,
+	},
 	"mlc-llm": {
 		prettyLabel: "MLC-LLM",
 		repoName: "MLC-LLM",