Add Codex run config and sample button styling

.codex/config.toml

@@ -0,0 +1 @@
+sandbox_mode = "workspace-write"

.codex/environments/environment.toml

@@ -0,0 +1,11 @@
+# THIS IS AUTOGENERATED. DO NOT EDIT MANUALLY
+version = 1
+name = "STLtoGCode"
+
+[setup]
+script = ""
+
+[[actions]]
+name = "Run"
+icon = "run"
+command = "uv run gradio app.py"

README.md

@@ -19,6 +19,14 @@ uv sync --all-groups
 uv run python app.py
 ```
 
+For reload mode during development, run:
+
+```powershell
+uv run gradio app.py
+```
+
+When `app.py` changes, Gradio will automatically rerun the file and refresh the demo.
+
 Then open the local Gradio URL in your browser, upload an STL file, and generate the TIFF stack.
 
 ## What the app does

app.py

@@ -63,6 +63,24 @@ APP_CSS = """
     cursor: pointer !important;
     opacity: 1 !important;
 }
+
+#load-sample-stls-button,
+#load-sample-stls-button button {
+    background: #f97316 !important;
+    border-color: #ea580c !important;
+    color: #ffffff !important;
+}
+
+#load-sample-stls-button:hover,
+#load-sample-stls-button button:hover {
+    background: #ea580c !important;
+    border-color: #c2410c !important;
+}
+
+#load-sample-stls-button:focus-visible,
+#load-sample-stls-button button:focus-visible {
+    box-shadow: 0 0 0 2px rgba(249, 115, 22, 0.35) !important;
+}
 """
 
 # Gradio 6.10's gr.Model3D leaves the Undo (reset view) button permanently
@@ -868,6 +886,7 @@ def build_demo() -> gr.Blocks:
                     size="sm",
                     min_width=140,
                     scale=0,
+                    elem_id="load-sample-stls-button",
                 )
                 with gr.Column(scale=0, min_width=240):
                     model_opacity = gr.Checkbox(