Bump sdk_version to 5.50.0; drop gradio pin from requirements.txt

HF injects gradio[oauth]==<sdk_version> into the pip install line, which
conflicts with an independent gradio pin in requirements.txt. The previous
push failed the build with that conflict. Fix by bumping sdk_version in
README frontmatter and removing the redundant requirements.txt line.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

CLAUDE.md

@@ -195,13 +195,18 @@ curl -s "https://huggingface.co/api/spaces/olfronar/megastyle-comparison" | \
   crashes at import. Vision-only inference has no use for the tokenizer. Load
   `SiglipImageProcessor.from_pretrained(SIGLIP_ID)` directly — the `pixel_values` output is
   identical.
-- **Pin `gradio>=5.25.0`, and launch with `show_api=False`.** HF's base image preinstalls
-  `gradio==5.9.1`, which has a `gradio_client.utils.get_type` that can't handle boolean JSON
-  schemas (valid JSON-Schema shorthand for accept-anything). `gr.Dataframe` triggers this path in
-  `/api/info`, producing a flood of `TypeError: argument of type 'bool' is not iterable` in the
-  run logs every time anything hits the API endpoint. Fixed in later 5.x. `show_api=False` on
-  `launch()` is an additional guard that prevents the endpoint from being exposed at all — we
-  don't need programmatic API access for a visual-only demo.
+- **Control the gradio version via `sdk_version` in README frontmatter, not `requirements.txt`.**
+  HF's Dockerfile injects `gradio[oauth]==<sdk_version>` into the pip install line alongside our
+  `requirements.txt`. Putting a conflicting `gradio` pin in `requirements.txt` (e.g.
+  `gradio>=5.25.0`) crashes the build with `Cannot install gradio==<sdk_version> and gradio>=...
+  because these package versions have conflicting dependencies`. Bump `sdk_version` instead;
+  `requirements.txt` should not name gradio at all.
+- **`sdk_version: 5.50.0` or newer is required.** Gradio 5.9.1 (the version HF defaults to at
+  Space creation) ships a `gradio_client.utils.get_type` that crashes on boolean JSON schemas
+  (valid JSON-Schema shorthand for accept-anything). `gr.Dataframe` triggers this in `/api/info`,
+  flooding run logs with `TypeError: argument of type 'bool' is not iterable`. Fixed in later
+  5.x. Also launch with `show_api=False` as a belt-and-suspenders so the endpoint isn't exposed
+  at all — we don't need programmatic API access for a visual-only demo.
 - **Match upstream preprocessing exactly.** If you find yourself tempted to resize, center-crop, or
   change color-space conversion manually instead of going through the SigLIP image processor, stop
   — the metric will silently degrade.

README.md

@@ -4,7 +4,7 @@ emoji: 🎨
 colorFrom: purple
 colorTo: pink
 sdk: gradio
-sdk_version: 5.9.1
+sdk_version: 5.50.0
 python_version: "3.10"
 app_file: app.py
 pinned: false

requirements.txt

@@ -1,4 +1,6 @@
-gradio>=5.25.0
+# gradio is pinned by the Space's `sdk_version` frontmatter (see README.md).
+# Adding a gradio line here conflicts with HF's hardcoded `gradio==<sdk_version>`
+# install. Bump the frontmatter instead.
 torch>=2.1.0
 transformers>=4.45.0
 Pillow>=10.0.0