Fix Reset App button

app.py

@@ -79,6 +79,10 @@ pipeline.to(device)
 
 init_session_state()
 
+# Uploader key is rotated on reset to force the widget to clear
+if "uploader_key" not in st.session_state:
+    st.session_state.uploader_key = 0
+
 st.markdown(
     "<style>"
     "details > summary { font-size: 1rem; font-weight: 500; }"
@@ -104,7 +108,7 @@ st.markdown(
     "<p style='margin-bottom:4px;'>Keep in mind that this is a very early draft of the tool. "
     "Please be patient with any bugs/errors, and email Connor Young at "
     "<a href='mailto:czyoung@ualr.edu'>czyoung@ualr.edu</a> if you need help using the tool!</p>"
-    "<hr style='margin-top:16px; margin-bottom:24px;'>",
+    "<hr style='margin-top:16px; margin-bottom:16px;'>",
     unsafe_allow_html=True,
 )
 
@@ -123,6 +127,7 @@ with st.expander("Instructions and additional details"):
 uploaded_file_paths = st.file_uploader(
     "Upload an audio of classroom activity to analyze",
     accept_multiple_files=True,
+    key=f"uploader_{st.session_state.uploader_key}",
 )
 
 temp_dir = tempfile.mkdtemp()
@@ -171,8 +176,10 @@ else:
             st.session_state.analyzeAllToggle = True
     with col_reset:
         if st.button("🗑️ Reset App", key="button_reset", type="secondary", use_container_width=True):
+            next_key = st.session_state.uploader_key + 1
             for key in list(st.session_state.keys()):
                 del st.session_state[key]
+            st.session_state.uploader_key = next_key
             st.rerun()
 
 # ---------------------------------------------------------------------------
@@ -352,4 +359,4 @@ with st.expander("(Potentially) FAQ"):
 
 st.divider()
 st.write("Would you like additional data, charts, or features? [Tell us about our project!](https://forms.gle/A32CdfGYSZoMPyyX9)")
-st.write("If you would like to learn more or work with us, contact Dr. Mark Baillie at mtbaillie@ualr.edu")
+st.write("If you would like to learn more or work with us, contact Dr. Mark Baillie at mtbaillie@ualr.edu")